author | ahrens |
Mon, 22 Jan 2007 13:21:07 -0800 | |
changeset 3461 | c19b22f347d6 |
parent 3063 | b252896b372b |
child 3638 | 6b28ebc717aa |
permissions | -rw-r--r-- |
789 | 1 |
/* |
2 |
* CDDL HEADER START |
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* |
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* The contents of this file are subject to the terms of the |
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1669 | 5 |
* Common Development and Distribution License (the "License"). |
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* You may not use this file except in compliance with the License. |
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789 | 7 |
* |
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
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* or http://www.opensolaris.org/os/licensing. |
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* See the License for the specific language governing permissions |
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* and limitations under the License. |
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* |
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* When distributing Covered Code, include this CDDL HEADER in each |
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
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* If applicable, add the following below this CDDL HEADER, with the |
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* fields enclosed by brackets "[]" replaced with your own identifying |
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* information: Portions Copyright [yyyy] [name of copyright owner] |
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* |
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* CDDL HEADER END |
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*/ |
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/* |
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3461 | 22 |
* Copyright 2007 Sun Microsystems, Inc. All rights reserved. |
789 | 23 |
* Use is subject to license terms. |
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*/ |
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||
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#pragma ident "%Z%%M% %I% %E% SMI" |
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27 |
||
28 |
#include <sys/types.h> |
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29 |
#include <sys/param.h> |
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30 |
#include <sys/systm.h> |
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31 |
#include <sys/sysmacros.h> |
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32 |
#include <sys/cmn_err.h> |
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33 |
#include <sys/kmem.h> |
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34 |
#include <sys/thread.h> |
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35 |
#include <sys/file.h> |
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36 |
#include <sys/vfs.h> |
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37 |
#include <sys/zfs_znode.h> |
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38 |
#include <sys/zfs_dir.h> |
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39 |
#include <sys/zil.h> |
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40 |
#include <sys/byteorder.h> |
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41 |
#include <sys/policy.h> |
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42 |
#include <sys/stat.h> |
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43 |
#include <sys/mode.h> |
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44 |
#include <sys/acl.h> |
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45 |
#include <sys/dmu.h> |
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46 |
#include <sys/spa.h> |
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47 |
#include <sys/ddi.h> |
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48 |
||
49 |
/* |
|
50 |
* All the functions in this file are used to construct the log entries |
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51 |
* to record transactions. They allocate * a intent log transaction |
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52 |
* structure (itx_t) and save within it all the information necessary to |
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53 |
* possibly replay the transaction. The itx is then assigned a sequence |
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54 |
* number and inserted in the in-memory list anchored in the zilog. |
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55 |
*/ |
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56 |
||
57 |
/* |
|
58 |
* zfs_log_create() is used to handle TX_CREATE, TX_MKDIR and TX_MKXATTR |
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59 |
* transactions. |
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60 |
*/ |
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void |
789 | 62 |
zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, int txtype, |
63 |
znode_t *dzp, znode_t *zp, char *name) |
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64 |
{ |
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65 |
itx_t *itx; |
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66 |
uint64_t seq; |
|
67 |
lr_create_t *lr; |
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68 |
size_t namesize = strlen(name) + 1; |
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69 |
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70 |
if (zilog == NULL) |
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return; |
789 | 72 |
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73 |
itx = zil_itx_create(txtype, sizeof (*lr) + namesize); |
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74 |
lr = (lr_create_t *)&itx->itx_lr; |
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75 |
lr->lr_doid = dzp->z_id; |
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76 |
lr->lr_foid = zp->z_id; |
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77 |
lr->lr_mode = zp->z_phys->zp_mode; |
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78 |
lr->lr_uid = zp->z_phys->zp_uid; |
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79 |
lr->lr_gid = zp->z_phys->zp_gid; |
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80 |
lr->lr_gen = zp->z_phys->zp_gen; |
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81 |
lr->lr_crtime[0] = zp->z_phys->zp_crtime[0]; |
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82 |
lr->lr_crtime[1] = zp->z_phys->zp_crtime[1]; |
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83 |
lr->lr_rdev = zp->z_phys->zp_rdev; |
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84 |
bcopy(name, (char *)(lr + 1), namesize); |
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85 |
||
86 |
seq = zil_itx_assign(zilog, itx, tx); |
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87 |
dzp->z_last_itx = seq; |
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88 |
zp->z_last_itx = seq; |
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89 |
} |
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90 |
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91 |
/* |
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92 |
* zfs_log_remove() handles both TX_REMOVE and TX_RMDIR transactions. |
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93 |
*/ |
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94 |
void |
789 | 95 |
zfs_log_remove(zilog_t *zilog, dmu_tx_t *tx, int txtype, |
96 |
znode_t *dzp, char *name) |
|
97 |
{ |
|
98 |
itx_t *itx; |
|
99 |
uint64_t seq; |
|
100 |
lr_remove_t *lr; |
|
101 |
size_t namesize = strlen(name) + 1; |
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102 |
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103 |
if (zilog == NULL) |
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104 |
return; |
789 | 105 |
|
106 |
itx = zil_itx_create(txtype, sizeof (*lr) + namesize); |
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107 |
lr = (lr_remove_t *)&itx->itx_lr; |
|
108 |
lr->lr_doid = dzp->z_id; |
|
109 |
bcopy(name, (char *)(lr + 1), namesize); |
|
110 |
||
111 |
seq = zil_itx_assign(zilog, itx, tx); |
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112 |
dzp->z_last_itx = seq; |
|
113 |
} |
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114 |
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115 |
/* |
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116 |
* zfs_log_link() handles TX_LINK transactions. |
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117 |
*/ |
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118 |
void |
789 | 119 |
zfs_log_link(zilog_t *zilog, dmu_tx_t *tx, int txtype, |
120 |
znode_t *dzp, znode_t *zp, char *name) |
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121 |
{ |
|
122 |
itx_t *itx; |
|
123 |
uint64_t seq; |
|
124 |
lr_link_t *lr; |
|
125 |
size_t namesize = strlen(name) + 1; |
|
126 |
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127 |
if (zilog == NULL) |
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128 |
return; |
789 | 129 |
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130 |
itx = zil_itx_create(txtype, sizeof (*lr) + namesize); |
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131 |
lr = (lr_link_t *)&itx->itx_lr; |
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132 |
lr->lr_doid = dzp->z_id; |
|
133 |
lr->lr_link_obj = zp->z_id; |
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134 |
bcopy(name, (char *)(lr + 1), namesize); |
|
135 |
||
136 |
seq = zil_itx_assign(zilog, itx, tx); |
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137 |
dzp->z_last_itx = seq; |
|
138 |
zp->z_last_itx = seq; |
|
139 |
} |
|
140 |
||
141 |
/* |
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142 |
* zfs_log_symlink() handles TX_SYMLINK transactions. |
|
143 |
*/ |
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144 |
void |
789 | 145 |
zfs_log_symlink(zilog_t *zilog, dmu_tx_t *tx, int txtype, |
146 |
znode_t *dzp, znode_t *zp, char *name, char *link) |
|
147 |
{ |
|
148 |
itx_t *itx; |
|
149 |
uint64_t seq; |
|
150 |
lr_create_t *lr; |
|
151 |
size_t namesize = strlen(name) + 1; |
|
152 |
size_t linksize = strlen(link) + 1; |
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153 |
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154 |
if (zilog == NULL) |
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155 |
return; |
789 | 156 |
|
157 |
itx = zil_itx_create(txtype, sizeof (*lr) + namesize + linksize); |
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158 |
lr = (lr_create_t *)&itx->itx_lr; |
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159 |
lr->lr_doid = dzp->z_id; |
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160 |
lr->lr_foid = zp->z_id; |
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161 |
lr->lr_mode = zp->z_phys->zp_mode; |
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162 |
lr->lr_uid = zp->z_phys->zp_uid; |
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163 |
lr->lr_gid = zp->z_phys->zp_gid; |
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164 |
lr->lr_gen = zp->z_phys->zp_gen; |
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165 |
lr->lr_crtime[0] = zp->z_phys->zp_crtime[0]; |
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166 |
lr->lr_crtime[1] = zp->z_phys->zp_crtime[1]; |
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167 |
bcopy(name, (char *)(lr + 1), namesize); |
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168 |
bcopy(link, (char *)(lr + 1) + namesize, linksize); |
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169 |
||
170 |
seq = zil_itx_assign(zilog, itx, tx); |
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171 |
dzp->z_last_itx = seq; |
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172 |
zp->z_last_itx = seq; |
|
173 |
} |
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174 |
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175 |
/* |
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176 |
* zfs_log_rename() handles TX_RENAME transactions. |
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177 |
*/ |
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178 |
void |
789 | 179 |
zfs_log_rename(zilog_t *zilog, dmu_tx_t *tx, int txtype, |
180 |
znode_t *sdzp, char *sname, znode_t *tdzp, char *dname, znode_t *szp) |
|
181 |
{ |
|
182 |
itx_t *itx; |
|
183 |
uint64_t seq; |
|
184 |
lr_rename_t *lr; |
|
185 |
size_t snamesize = strlen(sname) + 1; |
|
186 |
size_t dnamesize = strlen(dname) + 1; |
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187 |
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188 |
if (zilog == NULL) |
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189 |
return; |
789 | 190 |
|
191 |
itx = zil_itx_create(txtype, sizeof (*lr) + snamesize + dnamesize); |
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192 |
lr = (lr_rename_t *)&itx->itx_lr; |
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193 |
lr->lr_sdoid = sdzp->z_id; |
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194 |
lr->lr_tdoid = tdzp->z_id; |
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195 |
bcopy(sname, (char *)(lr + 1), snamesize); |
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196 |
bcopy(dname, (char *)(lr + 1) + snamesize, dnamesize); |
|
197 |
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198 |
seq = zil_itx_assign(zilog, itx, tx); |
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199 |
sdzp->z_last_itx = seq; |
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200 |
tdzp->z_last_itx = seq; |
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201 |
szp->z_last_itx = seq; |
|
202 |
} |
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203 |
||
204 |
/* |
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205 |
* zfs_log_write() handles TX_WRITE transactions. |
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206 |
*/ |
|
2237 | 207 |
ssize_t zfs_immediate_write_sz = 32768; |
789 | 208 |
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209 |
void |
789 | 210 |
zfs_log_write(zilog_t *zilog, dmu_tx_t *tx, int txtype, |
211 |
znode_t *zp, offset_t off, ssize_t len, int ioflag, uio_t *uio) |
|
212 |
{ |
|
213 |
itx_t *itx; |
|
214 |
uint64_t seq; |
|
215 |
lr_write_t *lr; |
|
1669 | 216 |
itx_wr_state_t write_state; |
217 |
size_t dlen; |
|
218 |
int err; |
|
789 | 219 |
|
3461 | 220 |
if (zilog == NULL || zp->z_unlinked) |
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221 |
return; |
789 | 222 |
|
1669 | 223 |
/* |
224 |
* Writes are handled in three different ways: |
|
225 |
* |
|
226 |
* WR_INDIRECT: |
|
227 |
* If the write is greater than zfs_immediate_write_sz then |
|
228 |
* later *if* we need to log the write then dmu_sync() is used |
|
229 |
* to immediately write the block and it's block pointer is put |
|
230 |
* in the log record. |
|
231 |
* WR_COPIED: |
|
232 |
* If we know we'll immediately be committing the |
|
233 |
* transaction (FDSYNC (O_DSYNC)), the we allocate a larger |
|
234 |
* log record here for the data and copy the data in. |
|
235 |
* WR_NEED_COPY: |
|
236 |
* Otherwise we don't allocate a buffer, and *if* we need to |
|
237 |
* flush the write later then a buffer is allocated and |
|
238 |
* we retrieve the data using the dmu. |
|
239 |
*/ |
|
240 |
if (len > zfs_immediate_write_sz) { |
|
241 |
dlen = 0; |
|
242 |
write_state = WR_INDIRECT; |
|
243 |
} else if (ioflag & FDSYNC) { |
|
244 |
dlen = len; |
|
245 |
write_state = WR_COPIED; |
|
246 |
} else { |
|
247 |
dlen = 0; |
|
248 |
write_state = WR_NEED_COPY; |
|
249 |
} |
|
789 | 250 |
itx = zil_itx_create(txtype, sizeof (*lr) + dlen); |
1669 | 251 |
if (write_state == WR_COPIED) { |
789 | 252 |
err = xcopyin(uio->uio_iov->iov_base - len, |
1669 | 253 |
(char *)itx + offsetof(itx_t, itx_lr) + sizeof (*lr), len); |
789 | 254 |
/* |
1669 | 255 |
* xcopyin shouldn't error as we've already successfully |
789 | 256 |
* copied it to a dmu buffer. However if it does we'll get |
257 |
* the data from the dmu later. |
|
258 |
*/ |
|
1669 | 259 |
if (err) { |
260 |
kmem_free(itx, offsetof(itx_t, itx_lr) |
|
261 |
+ itx->itx_lr.lrc_reclen); |
|
262 |
itx = zil_itx_create(txtype, sizeof (*lr)); |
|
263 |
write_state = WR_NEED_COPY; |
|
264 |
} |
|
789 | 265 |
} |
1669 | 266 |
itx->itx_wr_state = write_state; |
789 | 267 |
lr = (lr_write_t *)&itx->itx_lr; |
268 |
lr->lr_foid = zp->z_id; |
|
269 |
lr->lr_offset = off; |
|
270 |
lr->lr_length = len; |
|
271 |
lr->lr_blkoff = 0; |
|
272 |
BP_ZERO(&lr->lr_blkptr); |
|
273 |
||
274 |
itx->itx_private = zp->z_zfsvfs; |
|
275 |
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276 |
itx->itx_sync = (zp->z_sync_cnt != 0); |
789 | 277 |
seq = zil_itx_assign(zilog, itx, tx); |
278 |
zp->z_last_itx = seq; |
|
279 |
} |
|
280 |
||
281 |
/* |
|
282 |
* zfs_log_truncate() handles TX_TRUNCATE transactions. |
|
283 |
*/ |
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284 |
void |
789 | 285 |
zfs_log_truncate(zilog_t *zilog, dmu_tx_t *tx, int txtype, |
286 |
znode_t *zp, uint64_t off, uint64_t len) |
|
287 |
{ |
|
288 |
itx_t *itx; |
|
289 |
uint64_t seq; |
|
290 |
lr_truncate_t *lr; |
|
291 |
||
3461 | 292 |
if (zilog == NULL || zp->z_unlinked) |
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293 |
return; |
789 | 294 |
|
295 |
itx = zil_itx_create(txtype, sizeof (*lr)); |
|
296 |
lr = (lr_truncate_t *)&itx->itx_lr; |
|
297 |
lr->lr_foid = zp->z_id; |
|
298 |
lr->lr_offset = off; |
|
299 |
lr->lr_length = len; |
|
300 |
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|
301 |
itx->itx_sync = (zp->z_sync_cnt != 0); |
789 | 302 |
seq = zil_itx_assign(zilog, itx, tx); |
303 |
zp->z_last_itx = seq; |
|
304 |
} |
|
305 |
||
306 |
/* |
|
307 |
* zfs_log_setattr() handles TX_SETATTR transactions. |
|
308 |
*/ |
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309 |
void |
789 | 310 |
zfs_log_setattr(zilog_t *zilog, dmu_tx_t *tx, int txtype, |
311 |
znode_t *zp, vattr_t *vap, uint_t mask_applied) |
|
312 |
{ |
|
313 |
itx_t *itx; |
|
314 |
uint64_t seq; |
|
315 |
lr_setattr_t *lr; |
|
316 |
||
3461 | 317 |
if (zilog == NULL || zp->z_unlinked) |
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318 |
return; |
789 | 319 |
|
320 |
itx = zil_itx_create(txtype, sizeof (*lr)); |
|
321 |
lr = (lr_setattr_t *)&itx->itx_lr; |
|
322 |
lr->lr_foid = zp->z_id; |
|
323 |
lr->lr_mask = (uint64_t)mask_applied; |
|
324 |
lr->lr_mode = (uint64_t)vap->va_mode; |
|
325 |
lr->lr_uid = (uint64_t)vap->va_uid; |
|
326 |
lr->lr_gid = (uint64_t)vap->va_gid; |
|
327 |
lr->lr_size = (uint64_t)vap->va_size; |
|
328 |
ZFS_TIME_ENCODE(&vap->va_atime, lr->lr_atime); |
|
329 |
ZFS_TIME_ENCODE(&vap->va_mtime, lr->lr_mtime); |
|
330 |
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|
331 |
itx->itx_sync = (zp->z_sync_cnt != 0); |
789 | 332 |
seq = zil_itx_assign(zilog, itx, tx); |
333 |
zp->z_last_itx = seq; |
|
334 |
} |
|
335 |
||
336 |
/* |
|
337 |
* zfs_log_acl() handles TX_ACL transactions. |
|
338 |
*/ |
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|
339 |
void |
789 | 340 |
zfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, int txtype, |
341 |
znode_t *zp, int aclcnt, ace_t *z_ace) |
|
342 |
{ |
|
343 |
itx_t *itx; |
|
344 |
uint64_t seq; |
|
345 |
lr_acl_t *lr; |
|
346 |
||
3461 | 347 |
if (zilog == NULL || zp->z_unlinked) |
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4f583dfeae92
6413510 zfs: writing to ZFS filesystem slows down fsync() on other files in the same FS
perrin
parents:
2237
diff
changeset
|
348 |
return; |
789 | 349 |
|
350 |
itx = zil_itx_create(txtype, sizeof (*lr) + aclcnt * sizeof (ace_t)); |
|
351 |
lr = (lr_acl_t *)&itx->itx_lr; |
|
352 |
lr->lr_foid = zp->z_id; |
|
353 |
lr->lr_aclcnt = (uint64_t)aclcnt; |
|
354 |
bcopy(z_ace, (ace_t *)(lr + 1), aclcnt * sizeof (ace_t)); |
|
355 |
||
3063
b252896b372b
6341569 zio_alloc_blk() vdev distribution performs badly
perrin
parents:
2638
diff
changeset
|
356 |
itx->itx_sync = (zp->z_sync_cnt != 0); |
789 | 357 |
seq = zil_itx_assign(zilog, itx, tx); |
358 |
zp->z_last_itx = seq; |
|
359 |
} |