FreeCalypso > hg > tcs211-l1-reconst
annotate chipsetsw/drivers/drv_app/ffs/board/reclaim.c @ 300:b9d1ec19876c
l1p_cmpl.c: l1ddsp_read_iq_dump() calls eliminated
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 02 Oct 2017 06:52:47 +0000 |
parents | 509db1a7b7b8 |
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rev | line source |
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0
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1 /****************************************************************************** |
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2 * Flash File System (ffs) |
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3 * Idea, design and coding by Mads Meisner-Jensen, mmj@ti.com |
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4 * |
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5 * FFS core reclaim functionality |
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6 * |
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7 * $Id: reclaim.c 1.4.1.28 Thu, 08 Jan 2004 15:05:23 +0100 tsj $ |
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8 * |
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9 ******************************************************************************/ |
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10 |
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11 #ifndef TARGET |
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12 #include "ffs.cfg" |
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13 #endif |
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14 |
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15 #include "ffs/ffs.h" |
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16 #include "ffs/board/core.h" |
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17 #include "ffs/board/drv.h" |
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18 #include "ffs/board/ffstrace.h" |
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19 |
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20 #include <stdlib.h> // rand() |
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21 |
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22 /****************************************************************************** |
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23 * Inodes Reclaim |
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24 ******************************************************************************/ |
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25 |
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26 void inodes_recurse(iref_t i) |
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27 { |
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28 iref_t pi; |
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29 struct inode_s *ip, *newip; |
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30 |
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31 tw(tr(TR_BEGIN, TrReclaimLow, "inodes_recurse(%d) {\n", i)); |
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32 |
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33 ip = inode_addr(i); |
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34 newip = (struct inode_s *) offset2addr(dev.binfo[fs.newinodes].offset) + i; |
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35 |
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36 // copy inode dir to new block, except child, sibling and copied |
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37 ffsdrv.write((uint32*) &newip->location, (uint32*) &ip->location, sizeof(location_t)); |
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38 ffsdrv.write_halfword((uint16*) &newip->size, ip->size); |
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39 ffsdrv_write_byte (&newip->flags, ip->flags); |
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40 ffsdrv.write_halfword((uint16*) &newip->sequence, ip->sequence); |
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41 ffsdrv.write_halfword((uint16*) &newip->updates, ip->updates); |
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42 bstat[fs.newinodes].used++; |
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43 |
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44 // if no children of this dir, we have no more work to do |
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45 if (ip->child == (iref_t) IREF_NULL) { |
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46 tw(tr(TR_END, TrReclaimLow, "}\n")); |
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47 return; |
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48 } |
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49 |
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50 pi = -i; |
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51 i = ip->child; |
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52 ip = inode_addr(i); |
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53 |
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54 do { |
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55 tw(tr(TR_FUNC, TrReclaimLow, "pi = %d, i = %d", pi, i)); |
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56 |
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57 tw(tr(TR_NULL, TrReclaimLow, ", size = %d, location = 0x%x", ip->size, |
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58 ip->location)); |
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59 |
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60 tw(tr(TR_NULL, TrReclaimLow, ", name_addr = 0x%x", |
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61 addr2name(offset2addr(location2offset(ip->location))))); |
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62 |
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63 if (is_object(ip, OT_SEGMENT)) |
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64 tw(tr(TR_NULL, TrReclaimLow, ", (segment)\n")); |
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65 |
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66 else |
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67 tw(tr(TR_NULL, TrReclaimLow, ", '%s'\n", |
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68 (ip->size ? addr2name(offset2addr(location2offset(ip->location))) |
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69 : "(cleaned)"))); |
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70 |
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71 if (is_object_valid(ip)) |
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72 { |
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73 if (is_object(ip, OT_DIR)) { |
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74 tw(tr(TR_NULL, TrReclaimLow, "recursing...\n", i)); |
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75 inodes_recurse(i); |
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76 } |
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77 else { |
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78 tw(tr(TR_NULL, TrReclaimLow, "copying...\n")); |
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79 // copy inode to new block, except child, sibling and copied |
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80 newip = (struct inode_s *) |
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81 offset2addr(dev.binfo[fs.newinodes].offset) + i; |
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82 ffsdrv.write((uint32*) &newip->location, (uint32*) &ip->location, sizeof(location_t)); |
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83 ffsdrv.write_halfword((uint16*) &newip->size, ip->size); |
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84 ffsdrv_write_byte (&newip->flags, ip->flags); |
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85 ffsdrv.write_halfword((uint16*) &newip->sequence, ip->sequence); |
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86 ffsdrv.write_halfword((uint16*) &newip->updates, ip->updates); |
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87 bstat[fs.newinodes].used++; |
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88 } |
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89 |
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90 tw(tr(TR_FUNC, TrReclaimLow, "Linking: %d->%d\n",pi, i)); |
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91 // now write the child or sibling link of previous inode |
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92 newip = (struct inode_s *) |
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93 offset2addr(dev.binfo[fs.newinodes].offset); |
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94 if (pi > 0) |
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95 ffsdrv.write_halfword((uint16*) &(newip + pi)->sibling, i); |
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96 else |
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97 ffsdrv.write_halfword((uint16*) &(newip + (-pi))->child, i); |
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98 |
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99 pi = i; // save index of previous inode |
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100 |
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101 if (ip->child != (iref_t) IREF_NULL && is_object(ip, OT_FILE)) { |
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102 iref_t pis, is; |
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103 struct inode_s *ips; |
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104 pis = i; |
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105 ips = ip; |
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106 |
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107 tw(tr(TR_FUNC, TrReclaimLow, "Follow segment head\n")); |
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108 // While child is valid |
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109 while ((is = ips->child) != (iref_t) IREF_NULL) { |
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110 |
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111 // Get child |
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112 is = ips->child; |
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113 ips = inode_addr(is); |
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114 tw(tr(TR_FUNC, TrReclaimLow, "Child ok, got new child i = %d\n", is)); |
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115 // While object not is valid |
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116 while (!is_object_valid(ips)) { |
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117 tw(tr(TR_FUNC, TrReclaimLow, "pi = %d, i = %d c(cleaned)\n", pis, is)); |
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initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
118 // If sibling are valid |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
119 if (ips->sibling != (iref_t) IREF_NULL) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
120 // Get sibling |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
121 is = ips->sibling; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
122 ips = inode_addr(is); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
123 tw(tr(TR_FUNC, TrReclaimLow, "Sibling ok, got new sibling i = %d\n", is)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
124 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
125 else { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
126 tw(tr(TR_FUNC, TrReclaimLow, "Sibling = FF (%d)\n", ips->sibling)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
127 break; // Nothing more todo, child and sibling = FF |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
128 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
129 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
130 // If object is valid |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
131 if (is_object_valid(ips)) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
132 tw(tr(TR_NULL, TrReclaimLow, "copying...\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
133 // copy inode to new block, except child, sibling and copied |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
134 newip = (struct inode_s *) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
135 offset2addr(dev.binfo[fs.newinodes].offset) + is; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
136 ffsdrv.write((uint32*) &newip->location, (uint32*) &ips->location, sizeof(location_t)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
137 ffsdrv.write_halfword((uint16*) &newip->size, ips->size); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
138 ffsdrv_write_byte (&newip->flags, ips->flags); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
139 ffsdrv.write_halfword((uint16*) &newip->sequence, ips->sequence); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
140 ffsdrv.write_halfword((uint16*) &newip->updates, ips->updates); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
141 bstat[fs.newinodes].used++; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
142 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
143 tw(tr(TR_FUNC, TrReclaimLow, "Linking child: %d->%d\n",pis, is)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
144 // now write the child link of previous inode |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
145 newip = (struct inode_s *) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
146 offset2addr(dev.binfo[fs.newinodes].offset); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
147 ffsdrv.write_halfword((uint16*) &(newip + (pis))->child, is); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
148 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
149 pis = is; // save index of previous inode |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
150 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
151 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
152 else { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
153 tw(tr(TR_FUNC, TrReclaimLow, "Sibling = FF (%d, %d)\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
154 ips->sibling, ips->child)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
155 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
156 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
157 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
158 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
159 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
160 else { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
161 tw(tr(TR_NULL, TrReclaimLow, "(ignoring)\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
162 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
163 i = ip->sibling; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
164 ip = inode_addr(i); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
165 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
166 } while (i != (iref_t) IREF_NULL); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
167 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
168 tw(tr(TR_END, TrReclaimLow, "}\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
169 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
170 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
171 // Reclaim inodes, eg. move inodes to another block and erase old one. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
172 effs_t inodes_reclaim(void) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
173 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
174 tw(tr(TR_BEGIN, TrIReclaim, "inodes_reclaim() {\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
175 ttw(str(TTrRec, "irec{")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
176 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
177 if (fs.initerror != EFFS_OK) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
178 tw(tr(TR_END, TrIReclaim, "} %d\n", fs.initerror)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
179 ttw(ttr(TTrRec, "} %d" NL, fs.initerror)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
180 return fs.initerror; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
181 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
182 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
183 if ((fs.newinodes = block_alloc(1, BF_COPYING)) < 0) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
184 tw(tr(TR_END, TrIReclaim, "} %d\n", EFFS_NOBLOCKS)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
185 ttw(ttr(TTrRec, "} %d" NL, EFFS_NOBLOCKS)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
186 return EFFS_NOBLOCKS; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
187 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
188 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
189 statistics_update_irec(bstat[fs.inodes].used - bstat[fs.inodes].lost, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
190 bstat[fs.inodes].lost); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
191 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
192 // copy all inodes... |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
193 bstat[fs.newinodes].used = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
194 inodes_recurse(fs.root); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
195 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
196 block_commit(); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
197 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
198 tw(tr(TR_END, TrIReclaim, "} 0\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
199 ttw(str(TTrRec, "} 0" NL)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
200 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
201 return EFFS_OK; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
202 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
203 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
204 #if (FFS_TEST == 0) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
205 #define BLOCK_COMMIT_TEST(testcase, text) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
206 #else |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
207 #if (TARGET == 0) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
208 // NOTEME: We have compressed the macro code because it will NOT compile on |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
209 // Unix otherwise. So until we find out why, we use this as a work-around. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
210 #define BLOCK_COMMIT_TEST(testcase, text) if (fs.testflags == testcase) { tw(tr(TR_FUNC, TrData, "} (" text ")\n")); return; } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
211 #else |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
212 #define BLOCK_COMMIT_TEST(testcase, text) if (fs.testflags == testcase) { ttw(ttr(TTrData, "} (" text ")\n")); return; } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
213 #endif |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
214 #endif |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
215 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
216 // Inode -> Lost, Copying -> Inode, Lost -> Free |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
217 void block_commit(void) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
218 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
219 int oldinodes = fs.inodes; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
220 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
221 tw(tr(TR_BEGIN, TrIReclaim, "block_commit(%d -> %d) {\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
222 oldinodes, fs.newinodes)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
223 ttw(ttr(TTrRec, "block_commit(%d -> %d) {\n" NL, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
224 oldinodes, fs.newinodes)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
225 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
226 BLOCK_COMMIT_TEST(BLOCK_COMMIT_BEFORE, "Oops before commit"); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
227 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
228 block_flags_write(oldinodes, BF_LOST); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
229 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
230 BLOCK_COMMIT_TEST(BLOCK_COMMIT_NO_VALID, "Oops no valid inode block"); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
231 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
232 // Validate new block as an inodes block |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
233 block_flags_write(fs.newinodes, BF_INODES); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
234 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
235 bstat[fs.newinodes].lost = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
236 bstat[fs.newinodes].objects = 1; |
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Space Falcon <falcon@ivan.Harhan.ORG>
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diff
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237 inodes_set(fs.newinodes); |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
238 |
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239 // Free old inodes block |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
240 block_free(oldinodes); |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
241 |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
242 BLOCK_COMMIT_TEST(BLOCK_COMMIT_OLD_FREE, "Oops after freeing old block"); |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
243 |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
244 BLOCK_COMMIT_TEST(BLOCK_COMMIT_AFTER, "Oops after commit"); |
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Space Falcon <falcon@ivan.Harhan.ORG>
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diff
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|
245 |
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Space Falcon <falcon@ivan.Harhan.ORG>
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246 ttw(str(TTrRec, "} 0" NL)); |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
247 tw(tr(TR_END, TrIReclaim, "}\n")); |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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|
248 } |
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Space Falcon <falcon@ivan.Harhan.ORG>
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249 |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
250 |
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initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
251 /****************************************************************************** |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
252 * Data Reclaim |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
253 ******************************************************************************/ |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
254 |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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255 // Important note: We must NOT perform a data reclaim when we are in the |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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256 // process of creating the journal file! |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
257 |
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Space Falcon <falcon@ivan.Harhan.ORG>
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258 // Reclaim a data block, eg. move files to other blocks and erase old one. |
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Space Falcon <falcon@ivan.Harhan.ORG>
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259 // When the reclaim is done, we must completely delete the old inodes which |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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260 // are pointing into the old data sector which is going to be erased now. |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
261 iref_t data_reclaim(int space) |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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|
262 { |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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|
263 iref_t error; |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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|
264 |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
265 tw(tr(TR_BEGIN, TrDReclaim, "data_reclaim(%d) {\n", space)); |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
266 |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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|
267 if (fs.initerror != EFFS_OK) { |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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|
268 tw(tr(TR_END, TrDReclaim, "} %d\n", fs.initerror)); |
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Space Falcon <falcon@ivan.Harhan.ORG>
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269 return fs.initerror; |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
270 } |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
271 |
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Space Falcon <falcon@ivan.Harhan.ORG>
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272 error = data_reclaim_try(space); |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
273 |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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|
274 tw(tr(TR_END, TrDReclaim, "} (data_reclaim) %d\n", error)); |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
275 |
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Space Falcon <falcon@ivan.Harhan.ORG>
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276 return error; |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
277 } |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
278 |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
279 int dage_max_reached(int dage_blk, int agegain) |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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|
280 { |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
281 int reclaim, early, log2, mask; |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
282 |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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283 tw(tr(TR_BEGIN, TrDReclaim, "young(%d, %d) {\n", dage_blk, agegain)); |
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Space Falcon <falcon@ivan.Harhan.ORG>
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diff
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|
284 |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
285 // Simple algorithm |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
286 reclaim = (dage_blk + agegain - 2 * FFS_DAGE_MAX >= 0); |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
287 |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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|
288 // Early exponential probability based reclaim |
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Space Falcon <falcon@ivan.Harhan.ORG>
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|
289 early = FFS_DAGE_MAX - dage_blk; |
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Space Falcon <falcon@ivan.Harhan.ORG>
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290 if (agegain > dage_blk - 4 && 0 < early && early <= FFS_DAGE_EARLY_WIDTH) { |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
291 if (early < 4) |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
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|
292 early = 2; |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
293 if (early < FFS_DAGE_EARLY_WIDTH) { |
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Space Falcon <falcon@ivan.Harhan.ORG>
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294 // Now make an exponential probability distributon by |
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Space Falcon <falcon@ivan.Harhan.ORG>
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diff
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|
295 // generating a bitmask of a size relative to (dage_blk |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
296 // - DAGE_EARLY_WIDTH) |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
297 log2 = -1; |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
298 while (early > 0) { |
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Space Falcon <falcon@ivan.Harhan.ORG>
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diff
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|
299 early >>= 1; |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
300 log2++; |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
301 } |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
302 reclaim = log2; |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
303 |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
304 mask = (1 << (log2 + 1)) - 1; |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
305 reclaim = ((rand() & mask) == 0); |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
306 } |
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initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
307 } |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
308 |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
309 // Do not perform a reclaim unless we gain a certain minimum |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
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|
310 if (agegain < FFS_DAGE_GAIN_MIN) |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
311 reclaim = 0; |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
312 |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
313 tw(tr(TR_END, TrDReclaim, "} (%d)\n", reclaim)); |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
314 return reclaim; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
315 } |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
316 |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
317 |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
318 // Try to reclaim at least <space> bytes of data space. On success, return |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
319 // the number of bytes actually reclaimed. Otherwise, on failure, return a |
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initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
320 // (negative) error. |
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initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
321 int data_reclaim_try(int space) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
322 { |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
323 // 1. Find a suitable block to reclaim. |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
324 // |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
325 // 2. Relocate each valid object from old block (to another block). An |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
326 // object relocation is similar to a normal file update, e.g. similar to |
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initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
327 // fupdate(). |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
328 // |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
329 // 3. If there is not enough space to relocate a file, we must alloc a |
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initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
330 // new block then data_format() it. |
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initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
331 // |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
332 // 4. set BF_CLEANING flag of old block. |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
333 // |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
334 // 5. ALL inodes (also invalid an erased ones) referring into reclaimed |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
335 // block must now be totally wiped out. |
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
336 // |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
337 // 6. Free (invalidate) old block. |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
338 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
339 int result = 0, reserved_ok = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
340 bref_t b, blocks_free; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
341 bref_t brc_young_b, brc_lost_b, brc_unused_b; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
342 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
343 blocksize_t brc_lost_lost, brc_lost_unused; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
344 blocksize_t brc_unused_unused; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
345 blocksize_t unused, unused_total, lost, lost_total, free; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
346 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
347 age_t brc_young_dage, free_dage, dage; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
348 struct block_header_s *bhp; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
349 // Note gain can be negative if the free block is younger than the youngest data block |
509db1a7b7b8
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Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
350 int age_gain; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
351 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
352 tw(tr(TR_BEGIN, TrDReclaim, "data_reclaim_try(%d) {\n", space)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
353 ttw(str(TTrRec, "drec{" NL)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
354 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
355 // While searching for a block to reclaim, we maintain three block |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
356 // reclaim candidates (brc): One with the maximum number of lost bytes, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
357 // one with the maximum number of unused bytes and another for the |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
358 // youngest block, e.g. the one with the largest age distance to |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
359 // fs.age_max. The candidates are tried in the order mentioned. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
360 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
361 // This counts free blocks, so we initialize to number of blocks minus |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
362 // one for inodes. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
363 blocks_free = dev.numblocks - 1; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
364 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
365 // Initialize Block Reclaim Candidate (brc) variables |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
366 brc_lost_b = -1; brc_lost_unused = 0; brc_lost_lost = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
367 brc_unused_b = -1; brc_unused_unused = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
368 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
369 brc_young_b = -1; brc_young_dage = 0; free_dage = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
370 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
371 lost_total = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
372 unused_total = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
373 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
374 tw(tr(TR_FUNC, TrDReclaim, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
375 "blk unused lost w/age age dist objs\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
376 for (b = 0; b < dev.numblocks; b++) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
377 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
378 bhp = (struct block_header_s *) offset2addr(dev.binfo[b].offset); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
379 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
380 if (is_block(b, BF_IS_DATA)) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
381 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
382 // Record number of lost bytes and number of unused bytes, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
383 // eg. total space that would be freed if this block was |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
384 // reclaimed |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
385 lost = bstat[b].lost; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
386 unused = dev.blocksize - (bstat[b].used - bstat[b].lost); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
387 free = dev.blocksize - bstat[b].used; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
388 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
389 lost_total += lost; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
390 unused_total += unused; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
391 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
392 if (free >= RESERVED_LOW) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
393 reserved_ok = 1; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
394 if (lost > brc_lost_lost) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
395 brc_lost_b = b; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
396 brc_lost_lost = lost; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
397 brc_lost_unused = unused; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
398 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
399 if (unused > brc_unused_unused) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
400 brc_unused_b = b; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
401 brc_unused_unused = unused; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
402 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
403 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
404 tw(tr(TR_FUNC, TrDReclaim, "%3d %7d %7d ", b, unused, lost)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
405 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
406 dage = saturate_dage(fs.age_max - bhp->age); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
407 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
408 tw(tr(TR_NULL, TrDReclaim, "%6d %5d %4d %3d\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
409 lost, bhp->age, dage, bstat[b].objects)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
410 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
411 if (dage >= brc_young_dage) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
412 brc_young_b = b; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
413 brc_young_dage = dage; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
414 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
415 blocks_free--; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
416 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
417 else if (is_block(b, BF_IS_FREE)) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
418 unused_total += dev.blocksize; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
419 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
420 // Find youngest free block (in must cases we will only have one free b) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
421 dage = saturate_dage(fs.age_max - bhp->age); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
422 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
423 if (dage >= free_dage) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
424 free_dage = dage; // Delta age of youngest free block |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
425 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
426 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
427 tw(tr(TR_FUNC, TrDReclaim, "sum %7d %7d\n", unused_total, lost_total)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
428 tw(tr(TR_FUNC, TrDReclaim, "blocks_free = %d, fs.age_max = %d\n", blocks_free, fs.age_max)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
429 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
430 age_gain = brc_young_dage - free_dage; // Same as free - block age |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
431 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
432 if (space > unused_total) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
433 // We will never be able to reclaim this amount... |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
434 result = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
435 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
436 else { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
437 // No additional blocks (apart from spare block) are free... |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
438 tw(tr(TR_FUNC, TrDReclaim, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
439 "brc_young_dage = %d, brc_lost_unused = %d, brc_unused_unused = %d\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
440 brc_young_dage, brc_lost_unused, brc_unused_unused)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
441 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
442 if (reserved_ok == 0) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
443 tw(tr(TR_FUNC, TrDReclaim, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
444 "No reserved, reclaim most-lost block (%d)\n", brc_unused_b)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
445 result = data_block_reclaim(brc_lost_b, MOST_LOST); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
446 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
447 else if (dage_max_reached(brc_young_dage, age_gain) > 0 ) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
448 tw(tr(TR_FUNC, TrDReclaim, "Reclaiming youngest block (%d)\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
449 brc_young_b)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
450 result = data_block_reclaim(brc_young_b, YOUNGEST); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
451 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
452 else if (brc_lost_unused >= space) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
453 tw(tr(TR_FUNC, TrDReclaim, "Reclaiming most-lost block (%d)\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
454 brc_lost_b)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
455 result = data_block_reclaim(brc_lost_b, MOST_LOST); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
456 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
457 else if (brc_unused_unused >= space) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
458 tw(tr(TR_FUNC, TrDReclaim, "Reclaiming most-unused block (%d)\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
459 brc_unused_b)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
460 result = data_block_reclaim(brc_unused_b, MOST_UNUSED); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
461 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
462 else { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
463 tw(tr(TR_FUNC, TrDReclaim, "Reclaiming most-lost blockx (%d)\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
464 brc_lost_b)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
465 result = data_block_reclaim(brc_lost_b, MOST_LOST); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
466 if (result >= 0) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
467 result = 0; // We reclaimed a block but we still need more space |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
468 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
469 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
470 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
471 tw(tr(TR_END, TrDReclaim, "} (data_reclaim_try) %d\n", result)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
472 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
473 return result; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
474 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
475 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
476 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
477 #if (FFS_TEST == 0) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
478 #define BLOCK_RECLAIM_TEST(testcase, text) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
479 #else |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
480 #if (TARGET == 0) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
481 // NOTEME: We have compressed the macro code because it will NOT compile on |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
482 // Unix otherwise. So until we find out why, we use this as a work-around. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
483 #define BLOCK_RECLAIM_TEST(testcase, text) if (fs.testflags == testcase) { tw(tr(TR_FUNC, TrTestHigh, "(" text ")\n")); tw(tr(TR_END, TrDReclaim, "} (Test) -100\n", result));return -100; } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
484 #else |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
485 #define BLOCK_RECLAIM_TEST(testcase, text) if (fs.testflags == testcase) { ttw(ttr(TTrData, "} (" text ")"NL)); ttw(ttr(TTrRec, "} (Test) -100" NL));return -100; } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
486 #endif |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
487 #endif |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
488 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
489 #if (FFS_TEST == 0) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
490 #define BLOCK_RECOVER_TEST_INIT(testcase, text) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
491 #define BLOCK_RECOVER_TEST(testcase, text) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
492 #else |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
493 #if (TARGET == 0) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
494 #define BLOCK_RECOVER_TEST_INIT(testcase, text) int rand_object; if (fs.testflags == testcase) { rand_object = rand() % bstat[b].objects; tw(tr(TR_FUNC, TrTestHigh, "Fail when object nr %d is relocated\n", rand_object)); } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
495 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
496 #define BLOCK_RECOVER_TEST(testcase, text) if (fs.testflags == testcase) {if (rand_object == n) { tw(tr(TR_FUNC, TrTestHigh, "(" text ")\n")); tw(tr(TR_END, TrDReclaim, "} (Test) -101\n", result)); return -101; } } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
497 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
498 #else |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
499 #define BLOCK_RECOVER_TEST_INIT(testcase, text) int rand_object; if (fs.testflags == testcase) { rand_object = rand() % bstat[b].objects; ttw(ttr(TTrData, "Fail when object nr %d is relocated" NL, rand_object)); } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
500 #define BLOCK_RECOVER_TEST(testcase, text) if (fs.testflags == testcase) {if (rand_object == n) { ttw(ttr(TTrData, "(" text ")" NL)); ttw(ttr(TTrRec, "} (Test) -101" NL, result)); return -101; } } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
501 #endif |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
502 #endif |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
503 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
504 iref_t data_block_reclaim(bref_t b, int candidate) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
505 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
506 iref_t i, n, j; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
507 blocksize_t used_old, lost_old; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
508 int org_res_space, result = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
509 iref_t org_block_files_reserved; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
510 offset_t lower, upper; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
511 struct inode_s *ip; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
512 static int is_reclaim_running = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
513 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
514 tw(tr(TR_BEGIN, TrDReclaim, "data_block_reclaim(%d) {\n", b)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
515 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
516 // In case of no free blocks (after sudden power off) or if the file |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
517 // system is near full we risk to be reentered (infinity recursively |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
518 // loop) and we can not allow that, so just return. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
519 if (is_reclaim_running == 1) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
520 tw(tr(TR_END, TrDReclaim, "} (reenteret skip reclaim) 0\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
521 return EFFS_RECLAIMLOOP; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
522 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
523 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
524 is_reclaim_running = 1; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
525 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
526 // If there are more objects in this block than there are remaining |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
527 // free inodes, we have to make an inodes_reclaim() first. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
528 tw(tr(TR_FUNC, TrDReclaim, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
529 "block_objects, fs.inodes_max, inodes: used, free\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
530 tw(tr(TR_FUNC, TrDReclaim, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
531 "%10d, %13d, %15d, %4d\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
532 bstat[b].objects, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
533 fs.inodes_max, bstat[fs.inodes].used, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
534 fs.inodes_max - (bstat[fs.inodes].used + bstat[fs.inodes].lost))); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
535 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
536 if (bstat[b].objects >= (fs.inodes_max - (bstat[fs.inodes].used + |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
537 bstat[fs.inodes].lost + |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
538 FFS_INODES_MARGIN))) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
539 tw(tr(TR_FUNC, TrInode, "NOTE: Will run out of free inodes...\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
540 inodes_reclaim(); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
541 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
542 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
543 // Allocate a new block. NOTE: we don't return an error because if we |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
544 // get in the situation where we don't have any free blocks this is the |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
545 // only way to recover. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
546 if ((result = block_alloc(1, BF_DATA)) < 0) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
547 tw(tr(TR_FUNC, TrAll, "WARNING: block_alloc failed\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
548 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
549 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
550 BLOCK_RECLAIM_TEST(BLOCK_RECLAIM_ALLOC, "Oops after ffs_block_alloc()"); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
551 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
552 // If there are any objects at all to reclaim... |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
553 if (bstat[b].objects > 0) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
554 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
555 BLOCK_RECOVER_TEST_INIT(BLOCK_RECOVER_OBJECTS, "Dummy") |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
556 // Save the current journal state |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
557 if (journal_push() != EFFS_OK) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
558 is_reclaim_running = 0; // NOTEME: change to goto? |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
559 return EFFS_CORRUPTED; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
560 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
561 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
562 // We simulate that this block is completely full, such that we |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
563 // don't relocate files to the end of the block |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
564 used_old = bstat[b].used; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
565 lost_old = bstat[b].lost; // For statistics |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
566 bstat[b].used = dev.blocksize - 1; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
567 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
568 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
569 // Compute lower (inclusive) and upper (exclusive) bounds of the |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
570 // location of files in this block |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
571 lower = offset2location(dev.binfo[b].offset); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
572 upper = offset2location(dev.binfo[b].offset + dev.blocksize); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
573 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
574 tw(tr(TR_FUNC, TrDReclaim, "Block addr range = 0x%X..0x%X\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
575 location2offset(lower), location2offset(upper))); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
576 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
577 // This is the only time we are allowed to use the reserved |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
578 org_block_files_reserved= fs.block_files_reserved; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
579 fs.block_files_reserved = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
580 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
581 org_res_space = fs.reserved_space; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
582 fs.reserved_space = RESERVED_NONE; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
583 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
584 ip = inode_addr(1); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
585 for (i = 1, n = 0; i < fs.inodes_max; i++, ip++) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
586 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
587 BLOCK_RECOVER_TEST(BLOCK_RECOVER_OBJECTS, "Oops before relocate all objects"); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
588 // Ensure object is valid and within the block to be reclaimed |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
589 if (is_object_valid(ip) && |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
590 lower <= ip->location && ip->location < upper) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
591 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
592 if ((result = object_relocate(i)) < 0) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
593 tw(tr(TR_FUNC, TrAll, "FATAL object_relocate failed\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
594 break; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
595 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
596 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
597 // If we reclaim a segment head or wch that is in use we must |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
598 // update the file descriptor as well |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
599 for (j = 0; j < fs.fd_max; j++) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
600 if (i == fs.fd[j].seghead) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
601 tw(tr(TR_FUNC, TrDReclaim, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
602 "Updated seghead %d -> %d \n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
603 fs.fd[j].seghead, result)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
604 fs.fd[j].seghead = result; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
605 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
606 if (i == fs.fd[j].wch) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
607 tw(tr(TR_FUNC, TrDReclaim, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
608 "Updated wch %d -> %d \n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
609 fs.fd[j].wch, result)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
610 fs.fd[j].wch = result; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
611 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
612 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
613 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
614 // If we have just reclaimed an object which we started on |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
615 // updating we must also update ojournal |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
616 if (i == fs.ojournal.oldi) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
617 struct inode_s *ip = inode_addr(result); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
618 tw(tr(TR_FUNC, TrDReclaim, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
619 "Updated ojournal oldi %d -> %d \n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
620 fs.ojournal.oldi, result)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
621 fs.ojournal.oldi = result; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
622 fs.ojournal.location = ip->location; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
623 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
624 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
625 if (i == fs.ojournal.diri || i == -fs.ojournal.diri) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
626 fs.ojournal.diri = (fs.ojournal.diri < 0 ? -result : result); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
627 tw(tr(TR_FUNC, TrDReclaim, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
628 "Updated ojournal: diri %d -> %d \n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
629 i, fs.ojournal.diri)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
630 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
631 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
632 if (i == fs.ojournal.repli || i == -fs.ojournal.repli) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
633 fs.ojournal.repli = (fs.ojournal.repli < 0 ? -result : result); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
634 tw(tr(TR_FUNC, TrDReclaim, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
635 "Updated ojournal: repli %d -> %d \n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
636 i, fs.ojournal.repli)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
637 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
638 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
639 if (i == fs.i_backup || i == -fs.i_backup) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
640 fs.i_backup = (fs.i_backup < 0 ? -result : result); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
641 tw(tr(TR_FUNC, TrDReclaim, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
642 "Updated i_backup: %d -> %d \n", i, fs.i_backup)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
643 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
644 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
645 n++; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
646 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
647 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
648 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
649 fs.block_files_reserved = org_block_files_reserved; // Restore |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
650 fs.reserved_space = org_res_space; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
651 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
652 tw(tr(TR_FUNC, TrDReclaim, "Reclaimed %d objects\n", n)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
653 if (result >= 0) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
654 result = n; // We return number of objects relocated |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
655 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
656 if (i < fs.inodes_max) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
657 // We did not finish, so restore the old bstat[].used of the block. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
658 bstat[b].used = used_old; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
659 tw(tr(TR_FUNC, TrAll, |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
660 "WARNING: data_block_reclaim() not completed\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
661 result = EFFS_DBR; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
662 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
663 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
664 // Restore the saved journal state |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
665 if (journal_pop() != EFFS_OK) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
666 is_reclaim_running = 0; // NOTEME: change to goto? |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
667 return EFFS_CORRUPTED; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
668 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
669 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
670 BLOCK_RECLAIM_TEST(BLOCK_RECLAIM_NO_CLEAN, "Oops before clean old data block"); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
671 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
672 if (result >= 0) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
673 // Clean the block (remove all inodes that refer to this block) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
674 block_flags_write(b, BF_CLEANING); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
675 block_clean(b); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
676 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
677 statistics_update_drec(used_old - lost_old, lost_old, candidate); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
678 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
679 BLOCK_RECLAIM_TEST(BLOCK_RECLAIM_CLEANING, "Oops before free old data block"); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
680 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
681 // Free the old block |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
682 block_free(b); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
683 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
684 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
685 is_reclaim_running = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
686 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
687 tw(tr(TR_END, TrDReclaim, "} (data_block_reclaim) %d\n", result)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
688 ttw(ttr(TTrRec, "} %d" NL, result)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
689 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
690 return result; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
691 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
692 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
693 // Relocate object represented by inode reference <i>. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
694 iref_t object_relocate(iref_t oldi) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
695 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
696 iref_t newi; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
697 struct inode_s *oldip; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
698 char *olddata, *oldname; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
699 int oldsize; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
700 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
701 tw(tr(TR_BEGIN, TrReclaimLow, "object_relocate(%d) {\n", oldi)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
702 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
703 journal_begin(oldi); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
704 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
705 oldip = inode_addr(oldi); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
706 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
707 oldsize = segment_datasize(oldip); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
708 olddata = offset2addr(location2offset(oldip->location)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
709 oldname = addr2name(olddata); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
710 olddata = addr2data(olddata, oldip); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
711 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
712 if (is_object(oldip, OT_SEGMENT)) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
713 newi = segment_create(olddata, oldsize, -oldi); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
714 else { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
715 // root inode is a special case |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
716 if (*oldname == '/') |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
717 newi = object_create(oldname, olddata, oldsize, 0); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
718 else |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
719 newi = object_create(oldname, olddata, oldsize, oldi); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
720 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
721 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
722 if (newi < 0) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
723 tw(tr(TR_END, TrReclaimLow, "} %d\n", newi)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
724 return newi; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
725 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
726 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
727 // root inode is a special case |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
728 if ((*oldname == '/') && !is_object(oldip, OT_SEGMENT)) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
729 tw(tr(TR_FUNC, TrDReclaim, "Relocating fs.root: %d->%d\n", oldi, newi)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
730 fs.root = newi; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
731 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
732 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
733 journal_end(0); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
734 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
735 tw(tr(TR_END, TrReclaimLow, "} %d\n", newi)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
736 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
737 return newi; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
738 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
739 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
740 // Clean a block, eg. erase all inodes that refer to this block. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
741 iref_t block_clean(bref_t b) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
742 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
743 iref_t i, n; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
744 struct inode_s *ip; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
745 offset_t lower, upper; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
746 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
747 tw(tr(TR_FUNC, TrDReclaim, "block_clean(%d) { ", b)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
748 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
749 // Compute lower (inclusive) and upper (exclusive) bounds of the |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
750 // location of files in this block |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
751 lower = offset2location(dev.binfo[b].offset); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
752 upper = offset2location(dev.binfo[b].offset + dev.blocksize); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
753 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
754 tw(tr(TR_FUNC, TrDReclaim, "offset range = 0x%X..0x%X: ", lower, upper)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
755 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
756 ip = inode_addr(1); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
757 for (i = 1, n = 0; i < fs.inodes_max; i++, ip++) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
758 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
759 // Ensure object is within the block to be reclaimed. Note: if ffs |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
760 // is conf. with 1MB or above will all not used inodes default have |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
761 // the location to FFFF which will trigger a clean and make a error! |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
762 if (lower <= ip->location && upper > ip->location) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
763 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
764 tw(tr(TR_NULL, TrReclaimLow, "%d ", i)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
765 // Set the size to zero so it won't be counted in ffs_initialize() |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
766 ffsdrv.write_halfword((uint16 *) &ip->size, 0); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
767 n++; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
768 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
769 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
770 tw(tr(TR_NULL, TrDReclaim, "} %d\n", n)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
771 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
772 return n; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
773 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
774 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
775 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
776 /****************************************************************************** |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
777 * Main and block reclaim |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
778 ******************************************************************************/ |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
779 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
780 // Reclaim (erase) all blocks that are marked as invalid/reclaimable. Each |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
781 // time a block is erased, its age is incremented so as to support wear |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
782 // levelling. Also, the global age limits are updated. FIXME: Should we |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
783 // avoid having ffs_initialize() do a block_reclaim() because it delays reboot?. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
784 int blocks_reclaim(void) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
785 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
786 bref_t b, n, b_lost_space; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
787 int blocks_free = 0, lost_space; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
788 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
789 int free_space, b_free_space; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
790 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
791 tw(tr(TR_BEGIN, TrBlock, "blocks_reclaim() {\n")); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
792 ttw(str(TTrRec, "blocks_reclaim() {" NL)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
793 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
794 // Testing of fs.testflags is for the sake of testing block_commit() |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
795 if ((fs.testflags & BLOCK_COMMIT_BASE) != 0) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
796 tw(tr(TR_FUNC, TrBlock, "Bailing out because fs.testflags = 0x%X\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
797 fs.testflags)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
798 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
799 else { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
800 for (b = 0, n = 0; b < dev.numblocks; b++) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
801 if (is_block_flag(b, BF_LOST)) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
802 block_reclaim(b); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
803 n++; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
804 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
805 if (is_block(b, BF_IS_FREE)) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
806 blocks_free++; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
807 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
808 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
809 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
810 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
811 // If the number of free blocks is less than fs.blocks_free_min we |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
812 // call data_block_reclaim(). We will reclaim the block with most lost |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
813 // space. This should only happend if we got a sudden power off/reset |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
814 // while we reclaimed a block. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
815 if (blocks_free < fs.blocks_free_min) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
816 lost_space = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
817 free_space = 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
818 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
819 // We most never reclaim the block with most free space because this |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
820 // is the only block we can relocate the objects to. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
821 for (b = 0; b < dev.numblocks; b++) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
822 if (is_block_flag(b, BF_DATA)) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
823 if ((dev.blocksize - bstat[b].used) > free_space) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
824 free_space = dev.blocksize - bstat[b].used; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
825 b_free_space = b; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
826 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
827 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
828 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
829 tw(tr(TR_FUNC, TrBlock, "most free space: %d in block: %d \n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
830 free_space, b_free_space)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
831 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
832 for (b = 0; b < dev.numblocks; b++) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
833 if (is_block_flag(b, BF_DATA) && b != b_free_space) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
834 if (bstat[b].lost > lost_space) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
835 lost_space = bstat[b].lost; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
836 b_lost_space = b; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
837 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
838 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
839 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
840 tw(tr(TR_FUNC, TrBlock, "most lost space: %d in block: %d \n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
841 lost_space, b_lost_space)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
842 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
843 data_block_reclaim(b_lost_space, MOST_LOST); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
844 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
845 tw(tr(TR_END, TrBlock, "} %d\n", n)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
846 ttw(ttr(TTrRec, "} %d" NL, n)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
847 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
848 return n; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
849 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
850 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
851 int block_reclaim(bref_t b) |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
852 { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
853 age_t age; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
854 struct block_header_s *bhp; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
855 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
856 tw(tr(TR_BEGIN, TrBlock, "block_reclaim(%d) {\n", b)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
857 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
858 // In ffs_initialize() we set fs.initerror = EFFS_INVALID while we call |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
859 // blocks_fsck(). We test for that condition now, in order to avoid |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
860 // doing sector erases that will delay the whole target boot process. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
861 if (fs.initerror == EFFS_INVALID) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
862 tw(tr(TR_END, TrBlock, "} %d\n", fs.initerror)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
863 return fs.initerror; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
864 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
865 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
866 // Testing of fs.testflags is for the sake of testing block_commit() |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
867 if ((fs.testflags & BLOCK_COMMIT_BASE) != 0 && |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
868 fs.testflags != BLOCK_COMMIT_OLD_FREE) { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
869 tw(tr(TR_FUNC, TrBlock, "Bailing out because fs.testflags = 0x%X\n", |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
870 fs.testflags)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
871 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
872 else { |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
873 // We must read block's age before we erase it. |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
874 bhp = (struct block_header_s *) offset2addr(dev.binfo[b].offset); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
875 age = bhp->age; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
876 ffsdrv.erase(b); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
877 block_preformat(b, age); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
878 } |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
879 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
880 tw(tr(TR_END, TrBlock, "} %d\n", 0)); |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
881 |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
882 return 0; |
509db1a7b7b8
initial import: leo2moko-r1
Space Falcon <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
883 } |