]>
Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
a844f451 | 19 | #include "xfs_fs.h" |
a4fbe6ab | 20 | #include "xfs_format.h" |
239880ef DC |
21 | #include "xfs_log_format.h" |
22 | #include "xfs_trans_resv.h" | |
1da177e4 | 23 | #include "xfs_sb.h" |
a844f451 | 24 | #include "xfs_ag.h" |
1da177e4 | 25 | #include "xfs_mount.h" |
1da177e4 | 26 | #include "xfs_inode.h" |
239880ef | 27 | #include "xfs_trans.h" |
a844f451 | 28 | #include "xfs_inode_item.h" |
db7a19f2 | 29 | #include "xfs_error.h" |
0b1b213f | 30 | #include "xfs_trace.h" |
239880ef | 31 | #include "xfs_trans_priv.h" |
a4fbe6ab | 32 | #include "xfs_dinode.h" |
1234351c | 33 | #include "xfs_log.h" |
1da177e4 LT |
34 | |
35 | ||
36 | kmem_zone_t *xfs_ili_zone; /* inode log item zone */ | |
37 | ||
7bfa31d8 CH |
38 | static inline struct xfs_inode_log_item *INODE_ITEM(struct xfs_log_item *lip) |
39 | { | |
40 | return container_of(lip, struct xfs_inode_log_item, ili_item); | |
41 | } | |
42 | ||
166d1368 | 43 | STATIC void |
ce9641d6 CH |
44 | xfs_inode_item_data_fork_size( |
45 | struct xfs_inode_log_item *iip, | |
166d1368 DC |
46 | int *nvecs, |
47 | int *nbytes) | |
1da177e4 | 48 | { |
7bfa31d8 | 49 | struct xfs_inode *ip = iip->ili_inode; |
166d1368 | 50 | |
1da177e4 LT |
51 | switch (ip->i_d.di_format) { |
52 | case XFS_DINODE_FMT_EXTENTS: | |
f5d8d5c4 | 53 | if ((iip->ili_fields & XFS_ILOG_DEXT) && |
339a5f5d | 54 | ip->i_d.di_nextents > 0 && |
166d1368 DC |
55 | ip->i_df.if_bytes > 0) { |
56 | /* worst case, doesn't subtract delalloc extents */ | |
57 | *nbytes += XFS_IFORK_DSIZE(ip); | |
58 | *nvecs += 1; | |
59 | } | |
1da177e4 | 60 | break; |
1da177e4 | 61 | case XFS_DINODE_FMT_BTREE: |
f5d8d5c4 | 62 | if ((iip->ili_fields & XFS_ILOG_DBROOT) && |
166d1368 DC |
63 | ip->i_df.if_broot_bytes > 0) { |
64 | *nbytes += ip->i_df.if_broot_bytes; | |
65 | *nvecs += 1; | |
66 | } | |
1da177e4 | 67 | break; |
1da177e4 | 68 | case XFS_DINODE_FMT_LOCAL: |
f5d8d5c4 | 69 | if ((iip->ili_fields & XFS_ILOG_DDATA) && |
166d1368 DC |
70 | ip->i_df.if_bytes > 0) { |
71 | *nbytes += roundup(ip->i_df.if_bytes, 4); | |
72 | *nvecs += 1; | |
73 | } | |
1da177e4 LT |
74 | break; |
75 | ||
76 | case XFS_DINODE_FMT_DEV: | |
1da177e4 | 77 | case XFS_DINODE_FMT_UUID: |
1da177e4 | 78 | break; |
1da177e4 LT |
79 | default: |
80 | ASSERT(0); | |
81 | break; | |
82 | } | |
ce9641d6 | 83 | } |
1da177e4 | 84 | |
ce9641d6 CH |
85 | STATIC void |
86 | xfs_inode_item_attr_fork_size( | |
87 | struct xfs_inode_log_item *iip, | |
88 | int *nvecs, | |
89 | int *nbytes) | |
90 | { | |
91 | struct xfs_inode *ip = iip->ili_inode; | |
1da177e4 | 92 | |
1da177e4 LT |
93 | switch (ip->i_d.di_aformat) { |
94 | case XFS_DINODE_FMT_EXTENTS: | |
f5d8d5c4 | 95 | if ((iip->ili_fields & XFS_ILOG_AEXT) && |
339a5f5d | 96 | ip->i_d.di_anextents > 0 && |
166d1368 DC |
97 | ip->i_afp->if_bytes > 0) { |
98 | /* worst case, doesn't subtract unused space */ | |
99 | *nbytes += XFS_IFORK_ASIZE(ip); | |
100 | *nvecs += 1; | |
101 | } | |
1da177e4 | 102 | break; |
1da177e4 | 103 | case XFS_DINODE_FMT_BTREE: |
f5d8d5c4 | 104 | if ((iip->ili_fields & XFS_ILOG_ABROOT) && |
166d1368 DC |
105 | ip->i_afp->if_broot_bytes > 0) { |
106 | *nbytes += ip->i_afp->if_broot_bytes; | |
107 | *nvecs += 1; | |
108 | } | |
1da177e4 | 109 | break; |
1da177e4 | 110 | case XFS_DINODE_FMT_LOCAL: |
f5d8d5c4 | 111 | if ((iip->ili_fields & XFS_ILOG_ADATA) && |
166d1368 DC |
112 | ip->i_afp->if_bytes > 0) { |
113 | *nbytes += roundup(ip->i_afp->if_bytes, 4); | |
114 | *nvecs += 1; | |
115 | } | |
1da177e4 | 116 | break; |
1da177e4 LT |
117 | default: |
118 | ASSERT(0); | |
119 | break; | |
120 | } | |
1da177e4 LT |
121 | } |
122 | ||
ce9641d6 CH |
123 | /* |
124 | * This returns the number of iovecs needed to log the given inode item. | |
125 | * | |
126 | * We need one iovec for the inode log format structure, one for the | |
127 | * inode core, and possibly one for the inode data/extents/b-tree root | |
128 | * and one for the inode attribute data/extents/b-tree root. | |
129 | */ | |
130 | STATIC void | |
131 | xfs_inode_item_size( | |
132 | struct xfs_log_item *lip, | |
133 | int *nvecs, | |
134 | int *nbytes) | |
135 | { | |
136 | struct xfs_inode_log_item *iip = INODE_ITEM(lip); | |
137 | struct xfs_inode *ip = iip->ili_inode; | |
138 | ||
139 | *nvecs += 2; | |
140 | *nbytes += sizeof(struct xfs_inode_log_format) + | |
141 | xfs_icdinode_size(ip->i_d.di_version); | |
142 | ||
143 | xfs_inode_item_data_fork_size(iip, nvecs, nbytes); | |
144 | if (XFS_IFORK_Q(ip)) | |
145 | xfs_inode_item_attr_fork_size(iip, nvecs, nbytes); | |
146 | } | |
147 | ||
1da177e4 | 148 | /* |
3de559fb CH |
149 | * If this is a v1 format inode, then we need to log it as such. This means |
150 | * that we have to copy the link count from the new field to the old. We | |
151 | * don't have to worry about the new fields, because nothing trusts them as | |
152 | * long as the old inode version number is there. | |
1da177e4 LT |
153 | */ |
154 | STATIC void | |
3de559fb CH |
155 | xfs_inode_item_format_v1_inode( |
156 | struct xfs_inode *ip) | |
157 | { | |
158 | if (!xfs_sb_version_hasnlink(&ip->i_mount->m_sb)) { | |
159 | /* | |
160 | * Convert it back. | |
161 | */ | |
162 | ASSERT(ip->i_d.di_nlink <= XFS_MAXLINK_1); | |
163 | ip->i_d.di_onlink = ip->i_d.di_nlink; | |
164 | } else { | |
165 | /* | |
166 | * The superblock version has already been bumped, | |
167 | * so just make the conversion to the new inode | |
168 | * format permanent. | |
169 | */ | |
170 | ip->i_d.di_version = 2; | |
171 | ip->i_d.di_onlink = 0; | |
172 | memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad)); | |
173 | } | |
174 | } | |
175 | ||
1234351c | 176 | STATIC void |
3de559fb CH |
177 | xfs_inode_item_format_data_fork( |
178 | struct xfs_inode_log_item *iip, | |
bde7cff6 CH |
179 | struct xfs_inode_log_format *ilf, |
180 | struct xfs_log_vec *lv, | |
181 | struct xfs_log_iovec **vecp) | |
1da177e4 | 182 | { |
7bfa31d8 | 183 | struct xfs_inode *ip = iip->ili_inode; |
1da177e4 | 184 | size_t data_bytes; |
1da177e4 LT |
185 | |
186 | switch (ip->i_d.di_format) { | |
187 | case XFS_DINODE_FMT_EXTENTS: | |
f5d8d5c4 | 188 | iip->ili_fields &= |
339a5f5d CH |
189 | ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT | |
190 | XFS_ILOG_DEV | XFS_ILOG_UUID); | |
191 | ||
f5d8d5c4 | 192 | if ((iip->ili_fields & XFS_ILOG_DEXT) && |
339a5f5d CH |
193 | ip->i_d.di_nextents > 0 && |
194 | ip->i_df.if_bytes > 0) { | |
da776503 CH |
195 | struct xfs_bmbt_rec *p; |
196 | ||
1da177e4 | 197 | ASSERT(ip->i_df.if_u1.if_extents != NULL); |
339a5f5d | 198 | ASSERT(ip->i_df.if_bytes / sizeof(xfs_bmbt_rec_t) > 0); |
da776503 CH |
199 | |
200 | p = xlog_prepare_iovec(lv, vecp, XLOG_REG_TYPE_IEXT); | |
201 | data_bytes = xfs_iextents_copy(ip, p, XFS_DATA_FORK); | |
202 | xlog_finish_iovec(lv, *vecp, data_bytes); | |
203 | ||
204 | ASSERT(data_bytes <= ip->i_df.if_bytes); | |
205 | ||
206 | ilf->ilf_dsize = data_bytes; | |
bde7cff6 | 207 | ilf->ilf_size++; |
339a5f5d | 208 | } else { |
f5d8d5c4 | 209 | iip->ili_fields &= ~XFS_ILOG_DEXT; |
1da177e4 LT |
210 | } |
211 | break; | |
1da177e4 | 212 | case XFS_DINODE_FMT_BTREE: |
f5d8d5c4 | 213 | iip->ili_fields &= |
339a5f5d CH |
214 | ~(XFS_ILOG_DDATA | XFS_ILOG_DEXT | |
215 | XFS_ILOG_DEV | XFS_ILOG_UUID); | |
216 | ||
f5d8d5c4 | 217 | if ((iip->ili_fields & XFS_ILOG_DBROOT) && |
339a5f5d | 218 | ip->i_df.if_broot_bytes > 0) { |
1da177e4 | 219 | ASSERT(ip->i_df.if_broot != NULL); |
bde7cff6 | 220 | xlog_copy_iovec(lv, vecp, XLOG_REG_TYPE_IBROOT, |
1234351c CH |
221 | ip->i_df.if_broot, |
222 | ip->i_df.if_broot_bytes); | |
bde7cff6 CH |
223 | ilf->ilf_dsize = ip->i_df.if_broot_bytes; |
224 | ilf->ilf_size++; | |
339a5f5d | 225 | } else { |
f5d8d5c4 | 226 | ASSERT(!(iip->ili_fields & |
339a5f5d | 227 | XFS_ILOG_DBROOT)); |
f5d8d5c4 | 228 | iip->ili_fields &= ~XFS_ILOG_DBROOT; |
1da177e4 LT |
229 | } |
230 | break; | |
1da177e4 | 231 | case XFS_DINODE_FMT_LOCAL: |
f5d8d5c4 | 232 | iip->ili_fields &= |
339a5f5d CH |
233 | ~(XFS_ILOG_DEXT | XFS_ILOG_DBROOT | |
234 | XFS_ILOG_DEV | XFS_ILOG_UUID); | |
f5d8d5c4 | 235 | if ((iip->ili_fields & XFS_ILOG_DDATA) && |
339a5f5d | 236 | ip->i_df.if_bytes > 0) { |
1da177e4 LT |
237 | /* |
238 | * Round i_bytes up to a word boundary. | |
239 | * The underlying memory is guaranteed to | |
240 | * to be there by xfs_idata_realloc(). | |
241 | */ | |
242 | data_bytes = roundup(ip->i_df.if_bytes, 4); | |
1234351c CH |
243 | ASSERT(ip->i_df.if_real_bytes == 0 || |
244 | ip->i_df.if_real_bytes == data_bytes); | |
245 | ASSERT(ip->i_df.if_u1.if_data != NULL); | |
246 | ASSERT(ip->i_d.di_size > 0); | |
bde7cff6 | 247 | xlog_copy_iovec(lv, vecp, XLOG_REG_TYPE_ILOCAL, |
1234351c | 248 | ip->i_df.if_u1.if_data, data_bytes); |
bde7cff6 CH |
249 | ilf->ilf_dsize = (unsigned)data_bytes; |
250 | ilf->ilf_size++; | |
339a5f5d | 251 | } else { |
f5d8d5c4 | 252 | iip->ili_fields &= ~XFS_ILOG_DDATA; |
1da177e4 LT |
253 | } |
254 | break; | |
1da177e4 | 255 | case XFS_DINODE_FMT_DEV: |
f5d8d5c4 | 256 | iip->ili_fields &= |
339a5f5d CH |
257 | ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT | |
258 | XFS_ILOG_DEXT | XFS_ILOG_UUID); | |
bde7cff6 CH |
259 | if (iip->ili_fields & XFS_ILOG_DEV) |
260 | ilf->ilf_u.ilfu_rdev = ip->i_df.if_u2.if_rdev; | |
1da177e4 | 261 | break; |
1da177e4 | 262 | case XFS_DINODE_FMT_UUID: |
f5d8d5c4 | 263 | iip->ili_fields &= |
339a5f5d CH |
264 | ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT | |
265 | XFS_ILOG_DEXT | XFS_ILOG_DEV); | |
bde7cff6 CH |
266 | if (iip->ili_fields & XFS_ILOG_UUID) |
267 | ilf->ilf_u.ilfu_uuid = ip->i_df.if_u2.if_uuid; | |
1da177e4 | 268 | break; |
1da177e4 LT |
269 | default: |
270 | ASSERT(0); | |
271 | break; | |
272 | } | |
3de559fb CH |
273 | } |
274 | ||
1234351c | 275 | STATIC void |
3de559fb CH |
276 | xfs_inode_item_format_attr_fork( |
277 | struct xfs_inode_log_item *iip, | |
bde7cff6 CH |
278 | struct xfs_inode_log_format *ilf, |
279 | struct xfs_log_vec *lv, | |
280 | struct xfs_log_iovec **vecp) | |
3de559fb CH |
281 | { |
282 | struct xfs_inode *ip = iip->ili_inode; | |
283 | size_t data_bytes; | |
1da177e4 LT |
284 | |
285 | switch (ip->i_d.di_aformat) { | |
286 | case XFS_DINODE_FMT_EXTENTS: | |
f5d8d5c4 | 287 | iip->ili_fields &= |
339a5f5d CH |
288 | ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT); |
289 | ||
f5d8d5c4 | 290 | if ((iip->ili_fields & XFS_ILOG_AEXT) && |
339a5f5d CH |
291 | ip->i_d.di_anextents > 0 && |
292 | ip->i_afp->if_bytes > 0) { | |
da776503 CH |
293 | struct xfs_bmbt_rec *p; |
294 | ||
339a5f5d CH |
295 | ASSERT(ip->i_afp->if_bytes / sizeof(xfs_bmbt_rec_t) == |
296 | ip->i_d.di_anextents); | |
73523a2e | 297 | ASSERT(ip->i_afp->if_u1.if_extents != NULL); |
da776503 CH |
298 | |
299 | p = xlog_prepare_iovec(lv, vecp, XLOG_REG_TYPE_IATTR_EXT); | |
300 | data_bytes = xfs_iextents_copy(ip, p, XFS_ATTR_FORK); | |
301 | xlog_finish_iovec(lv, *vecp, data_bytes); | |
302 | ||
303 | ilf->ilf_asize = data_bytes; | |
bde7cff6 | 304 | ilf->ilf_size++; |
339a5f5d | 305 | } else { |
f5d8d5c4 | 306 | iip->ili_fields &= ~XFS_ILOG_AEXT; |
1da177e4 LT |
307 | } |
308 | break; | |
1da177e4 | 309 | case XFS_DINODE_FMT_BTREE: |
f5d8d5c4 | 310 | iip->ili_fields &= |
339a5f5d CH |
311 | ~(XFS_ILOG_ADATA | XFS_ILOG_AEXT); |
312 | ||
f5d8d5c4 | 313 | if ((iip->ili_fields & XFS_ILOG_ABROOT) && |
339a5f5d | 314 | ip->i_afp->if_broot_bytes > 0) { |
1da177e4 | 315 | ASSERT(ip->i_afp->if_broot != NULL); |
339a5f5d | 316 | |
bde7cff6 | 317 | xlog_copy_iovec(lv, vecp, XLOG_REG_TYPE_IATTR_BROOT, |
1234351c CH |
318 | ip->i_afp->if_broot, |
319 | ip->i_afp->if_broot_bytes); | |
bde7cff6 CH |
320 | ilf->ilf_asize = ip->i_afp->if_broot_bytes; |
321 | ilf->ilf_size++; | |
339a5f5d | 322 | } else { |
f5d8d5c4 | 323 | iip->ili_fields &= ~XFS_ILOG_ABROOT; |
1da177e4 LT |
324 | } |
325 | break; | |
1da177e4 | 326 | case XFS_DINODE_FMT_LOCAL: |
f5d8d5c4 | 327 | iip->ili_fields &= |
339a5f5d CH |
328 | ~(XFS_ILOG_AEXT | XFS_ILOG_ABROOT); |
329 | ||
f5d8d5c4 | 330 | if ((iip->ili_fields & XFS_ILOG_ADATA) && |
339a5f5d | 331 | ip->i_afp->if_bytes > 0) { |
1da177e4 LT |
332 | /* |
333 | * Round i_bytes up to a word boundary. | |
334 | * The underlying memory is guaranteed to | |
335 | * to be there by xfs_idata_realloc(). | |
336 | */ | |
337 | data_bytes = roundup(ip->i_afp->if_bytes, 4); | |
1234351c CH |
338 | ASSERT(ip->i_afp->if_real_bytes == 0 || |
339 | ip->i_afp->if_real_bytes == data_bytes); | |
340 | ASSERT(ip->i_afp->if_u1.if_data != NULL); | |
bde7cff6 | 341 | xlog_copy_iovec(lv, vecp, XLOG_REG_TYPE_IATTR_LOCAL, |
1234351c CH |
342 | ip->i_afp->if_u1.if_data, |
343 | data_bytes); | |
bde7cff6 CH |
344 | ilf->ilf_asize = (unsigned)data_bytes; |
345 | ilf->ilf_size++; | |
339a5f5d | 346 | } else { |
f5d8d5c4 | 347 | iip->ili_fields &= ~XFS_ILOG_ADATA; |
1da177e4 LT |
348 | } |
349 | break; | |
1da177e4 LT |
350 | default: |
351 | ASSERT(0); | |
352 | break; | |
353 | } | |
3de559fb CH |
354 | } |
355 | ||
356 | /* | |
357 | * This is called to fill in the vector of log iovecs for the given inode | |
358 | * log item. It fills the first item with an inode log format structure, | |
359 | * the second with the on-disk inode structure, and a possible third and/or | |
360 | * fourth with the inode data/extents/b-tree root and inode attributes | |
361 | * data/extents/b-tree root. | |
362 | */ | |
363 | STATIC void | |
364 | xfs_inode_item_format( | |
365 | struct xfs_log_item *lip, | |
bde7cff6 | 366 | struct xfs_log_vec *lv) |
3de559fb CH |
367 | { |
368 | struct xfs_inode_log_item *iip = INODE_ITEM(lip); | |
369 | struct xfs_inode *ip = iip->ili_inode; | |
bde7cff6 CH |
370 | struct xfs_inode_log_format *ilf; |
371 | struct xfs_log_iovec *vecp = NULL; | |
3de559fb | 372 | |
2f251293 CH |
373 | ilf = xlog_prepare_iovec(lv, &vecp, XLOG_REG_TYPE_IFORMAT); |
374 | ilf->ilf_type = XFS_LI_INODE; | |
375 | ilf->ilf_ino = ip->i_ino; | |
376 | ilf->ilf_blkno = ip->i_imap.im_blkno; | |
377 | ilf->ilf_len = ip->i_imap.im_len; | |
378 | ilf->ilf_boffset = ip->i_imap.im_boffset; | |
379 | ilf->ilf_fields = XFS_ILOG_CORE; | |
380 | ilf->ilf_size = 2; /* format + core */ | |
381 | xlog_finish_iovec(lv, vecp, sizeof(struct xfs_inode_log_format)); | |
3de559fb CH |
382 | |
383 | if (ip->i_d.di_version == 1) | |
384 | xfs_inode_item_format_v1_inode(ip); | |
bde7cff6 CH |
385 | xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICORE, |
386 | &ip->i_d, | |
387 | xfs_icdinode_size(ip->i_d.di_version)); | |
3de559fb | 388 | |
bde7cff6 | 389 | xfs_inode_item_format_data_fork(iip, ilf, lv, &vecp); |
3de559fb | 390 | if (XFS_IFORK_Q(ip)) { |
bde7cff6 | 391 | xfs_inode_item_format_attr_fork(iip, ilf, lv, &vecp); |
3de559fb CH |
392 | } else { |
393 | iip->ili_fields &= | |
394 | ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT); | |
395 | } | |
396 | ||
2f251293 CH |
397 | /* update the format with the exact fields we actually logged */ |
398 | ilf->ilf_fields |= (iip->ili_fields & ~XFS_ILOG_TIMESTAMP); | |
1da177e4 LT |
399 | } |
400 | ||
1da177e4 LT |
401 | /* |
402 | * This is called to pin the inode associated with the inode log | |
a14a5ab5 | 403 | * item in memory so it cannot be written out. |
1da177e4 LT |
404 | */ |
405 | STATIC void | |
406 | xfs_inode_item_pin( | |
7bfa31d8 | 407 | struct xfs_log_item *lip) |
1da177e4 | 408 | { |
7bfa31d8 | 409 | struct xfs_inode *ip = INODE_ITEM(lip)->ili_inode; |
a14a5ab5 | 410 | |
7bfa31d8 CH |
411 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
412 | ||
413 | trace_xfs_inode_pin(ip, _RET_IP_); | |
414 | atomic_inc(&ip->i_pincount); | |
1da177e4 LT |
415 | } |
416 | ||
417 | ||
418 | /* | |
419 | * This is called to unpin the inode associated with the inode log | |
420 | * item which was previously pinned with a call to xfs_inode_item_pin(). | |
a14a5ab5 CH |
421 | * |
422 | * Also wake up anyone in xfs_iunpin_wait() if the count goes to 0. | |
1da177e4 | 423 | */ |
1da177e4 LT |
424 | STATIC void |
425 | xfs_inode_item_unpin( | |
7bfa31d8 | 426 | struct xfs_log_item *lip, |
9412e318 | 427 | int remove) |
1da177e4 | 428 | { |
7bfa31d8 | 429 | struct xfs_inode *ip = INODE_ITEM(lip)->ili_inode; |
a14a5ab5 | 430 | |
4aaf15d1 | 431 | trace_xfs_inode_unpin(ip, _RET_IP_); |
a14a5ab5 CH |
432 | ASSERT(atomic_read(&ip->i_pincount) > 0); |
433 | if (atomic_dec_and_test(&ip->i_pincount)) | |
f392e631 | 434 | wake_up_bit(&ip->i_flags, __XFS_IPINNED_BIT); |
1da177e4 LT |
435 | } |
436 | ||
1da177e4 | 437 | STATIC uint |
43ff2122 CH |
438 | xfs_inode_item_push( |
439 | struct xfs_log_item *lip, | |
440 | struct list_head *buffer_list) | |
1da177e4 | 441 | { |
7bfa31d8 CH |
442 | struct xfs_inode_log_item *iip = INODE_ITEM(lip); |
443 | struct xfs_inode *ip = iip->ili_inode; | |
43ff2122 CH |
444 | struct xfs_buf *bp = NULL; |
445 | uint rval = XFS_ITEM_SUCCESS; | |
446 | int error; | |
1da177e4 | 447 | |
7bfa31d8 | 448 | if (xfs_ipincount(ip) > 0) |
1da177e4 | 449 | return XFS_ITEM_PINNED; |
1da177e4 | 450 | |
7bfa31d8 | 451 | if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) |
1da177e4 | 452 | return XFS_ITEM_LOCKED; |
1da177e4 | 453 | |
4c46819a CH |
454 | /* |
455 | * Re-check the pincount now that we stabilized the value by | |
456 | * taking the ilock. | |
457 | */ | |
458 | if (xfs_ipincount(ip) > 0) { | |
43ff2122 CH |
459 | rval = XFS_ITEM_PINNED; |
460 | goto out_unlock; | |
4c46819a CH |
461 | } |
462 | ||
9a3a5dab BF |
463 | /* |
464 | * Stale inode items should force out the iclog. | |
465 | */ | |
466 | if (ip->i_flags & XFS_ISTALE) { | |
467 | rval = XFS_ITEM_PINNED; | |
468 | goto out_unlock; | |
469 | } | |
470 | ||
43ff2122 CH |
471 | /* |
472 | * Someone else is already flushing the inode. Nothing we can do | |
473 | * here but wait for the flush to finish and remove the item from | |
474 | * the AIL. | |
475 | */ | |
1da177e4 | 476 | if (!xfs_iflock_nowait(ip)) { |
43ff2122 CH |
477 | rval = XFS_ITEM_FLUSHING; |
478 | goto out_unlock; | |
1da177e4 LT |
479 | } |
480 | ||
43ff2122 CH |
481 | ASSERT(iip->ili_fields != 0 || XFS_FORCED_SHUTDOWN(ip->i_mount)); |
482 | ASSERT(iip->ili_logged == 0 || XFS_FORCED_SHUTDOWN(ip->i_mount)); | |
483 | ||
484 | spin_unlock(&lip->li_ailp->xa_lock); | |
485 | ||
486 | error = xfs_iflush(ip, &bp); | |
487 | if (!error) { | |
488 | if (!xfs_buf_delwri_queue(bp, buffer_list)) | |
489 | rval = XFS_ITEM_FLUSHING; | |
490 | xfs_buf_relse(bp); | |
1da177e4 | 491 | } |
43ff2122 CH |
492 | |
493 | spin_lock(&lip->li_ailp->xa_lock); | |
494 | out_unlock: | |
495 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
496 | return rval; | |
1da177e4 LT |
497 | } |
498 | ||
499 | /* | |
500 | * Unlock the inode associated with the inode log item. | |
501 | * Clear the fields of the inode and inode log item that | |
502 | * are specific to the current transaction. If the | |
503 | * hold flags is set, do not unlock the inode. | |
504 | */ | |
505 | STATIC void | |
506 | xfs_inode_item_unlock( | |
7bfa31d8 | 507 | struct xfs_log_item *lip) |
1da177e4 | 508 | { |
7bfa31d8 CH |
509 | struct xfs_inode_log_item *iip = INODE_ITEM(lip); |
510 | struct xfs_inode *ip = iip->ili_inode; | |
898621d5 | 511 | unsigned short lock_flags; |
1da177e4 | 512 | |
f3ca8738 CH |
513 | ASSERT(ip->i_itemp != NULL); |
514 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
1da177e4 | 515 | |
898621d5 CH |
516 | lock_flags = iip->ili_lock_flags; |
517 | iip->ili_lock_flags = 0; | |
ddc3415a | 518 | if (lock_flags) |
f3ca8738 | 519 | xfs_iunlock(ip, lock_flags); |
1da177e4 LT |
520 | } |
521 | ||
522 | /* | |
de25c181 DC |
523 | * This is called to find out where the oldest active copy of the inode log |
524 | * item in the on disk log resides now that the last log write of it completed | |
525 | * at the given lsn. Since we always re-log all dirty data in an inode, the | |
526 | * latest copy in the on disk log is the only one that matters. Therefore, | |
527 | * simply return the given lsn. | |
528 | * | |
529 | * If the inode has been marked stale because the cluster is being freed, we | |
530 | * don't want to (re-)insert this inode into the AIL. There is a race condition | |
531 | * where the cluster buffer may be unpinned before the inode is inserted into | |
532 | * the AIL during transaction committed processing. If the buffer is unpinned | |
533 | * before the inode item has been committed and inserted, then it is possible | |
1316d4da | 534 | * for the buffer to be written and IO completes before the inode is inserted |
de25c181 DC |
535 | * into the AIL. In that case, we'd be inserting a clean, stale inode into the |
536 | * AIL which will never get removed. It will, however, get reclaimed which | |
537 | * triggers an assert in xfs_inode_free() complaining about freein an inode | |
538 | * still in the AIL. | |
539 | * | |
1316d4da DC |
540 | * To avoid this, just unpin the inode directly and return a LSN of -1 so the |
541 | * transaction committed code knows that it does not need to do any further | |
542 | * processing on the item. | |
1da177e4 | 543 | */ |
1da177e4 LT |
544 | STATIC xfs_lsn_t |
545 | xfs_inode_item_committed( | |
7bfa31d8 | 546 | struct xfs_log_item *lip, |
1da177e4 LT |
547 | xfs_lsn_t lsn) |
548 | { | |
de25c181 DC |
549 | struct xfs_inode_log_item *iip = INODE_ITEM(lip); |
550 | struct xfs_inode *ip = iip->ili_inode; | |
551 | ||
1316d4da DC |
552 | if (xfs_iflags_test(ip, XFS_ISTALE)) { |
553 | xfs_inode_item_unpin(lip, 0); | |
554 | return -1; | |
555 | } | |
7bfa31d8 | 556 | return lsn; |
1da177e4 LT |
557 | } |
558 | ||
1da177e4 LT |
559 | /* |
560 | * XXX rcc - this one really has to do something. Probably needs | |
561 | * to stamp in a new field in the incore inode. | |
562 | */ | |
1da177e4 LT |
563 | STATIC void |
564 | xfs_inode_item_committing( | |
7bfa31d8 | 565 | struct xfs_log_item *lip, |
1da177e4 LT |
566 | xfs_lsn_t lsn) |
567 | { | |
7bfa31d8 | 568 | INODE_ITEM(lip)->ili_last_lsn = lsn; |
1da177e4 LT |
569 | } |
570 | ||
571 | /* | |
572 | * This is the ops vector shared by all buf log items. | |
573 | */ | |
272e42b2 | 574 | static const struct xfs_item_ops xfs_inode_item_ops = { |
7bfa31d8 CH |
575 | .iop_size = xfs_inode_item_size, |
576 | .iop_format = xfs_inode_item_format, | |
577 | .iop_pin = xfs_inode_item_pin, | |
578 | .iop_unpin = xfs_inode_item_unpin, | |
7bfa31d8 CH |
579 | .iop_unlock = xfs_inode_item_unlock, |
580 | .iop_committed = xfs_inode_item_committed, | |
581 | .iop_push = xfs_inode_item_push, | |
7bfa31d8 | 582 | .iop_committing = xfs_inode_item_committing |
1da177e4 LT |
583 | }; |
584 | ||
585 | ||
586 | /* | |
587 | * Initialize the inode log item for a newly allocated (in-core) inode. | |
588 | */ | |
589 | void | |
590 | xfs_inode_item_init( | |
7bfa31d8 CH |
591 | struct xfs_inode *ip, |
592 | struct xfs_mount *mp) | |
1da177e4 | 593 | { |
7bfa31d8 | 594 | struct xfs_inode_log_item *iip; |
1da177e4 LT |
595 | |
596 | ASSERT(ip->i_itemp == NULL); | |
597 | iip = ip->i_itemp = kmem_zone_zalloc(xfs_ili_zone, KM_SLEEP); | |
598 | ||
1da177e4 | 599 | iip->ili_inode = ip; |
43f5efc5 DC |
600 | xfs_log_item_init(mp, &iip->ili_item, XFS_LI_INODE, |
601 | &xfs_inode_item_ops); | |
1da177e4 LT |
602 | } |
603 | ||
604 | /* | |
605 | * Free the inode log item and any memory hanging off of it. | |
606 | */ | |
607 | void | |
608 | xfs_inode_item_destroy( | |
609 | xfs_inode_t *ip) | |
610 | { | |
1da177e4 LT |
611 | kmem_zone_free(xfs_ili_zone, ip->i_itemp); |
612 | } | |
613 | ||
614 | ||
615 | /* | |
616 | * This is the inode flushing I/O completion routine. It is called | |
617 | * from interrupt level when the buffer containing the inode is | |
618 | * flushed to disk. It is responsible for removing the inode item | |
619 | * from the AIL if it has not been re-logged, and unlocking the inode's | |
620 | * flush lock. | |
30136832 DC |
621 | * |
622 | * To reduce AIL lock traffic as much as possible, we scan the buffer log item | |
623 | * list for other inodes that will run this function. We remove them from the | |
624 | * buffer list so we can process all the inode IO completions in one AIL lock | |
625 | * traversal. | |
1da177e4 | 626 | */ |
1da177e4 LT |
627 | void |
628 | xfs_iflush_done( | |
ca30b2a7 CH |
629 | struct xfs_buf *bp, |
630 | struct xfs_log_item *lip) | |
1da177e4 | 631 | { |
30136832 DC |
632 | struct xfs_inode_log_item *iip; |
633 | struct xfs_log_item *blip; | |
634 | struct xfs_log_item *next; | |
635 | struct xfs_log_item *prev; | |
ca30b2a7 | 636 | struct xfs_ail *ailp = lip->li_ailp; |
30136832 DC |
637 | int need_ail = 0; |
638 | ||
639 | /* | |
640 | * Scan the buffer IO completions for other inodes being completed and | |
641 | * attach them to the current inode log item. | |
642 | */ | |
adadbeef | 643 | blip = bp->b_fspriv; |
30136832 DC |
644 | prev = NULL; |
645 | while (blip != NULL) { | |
646 | if (lip->li_cb != xfs_iflush_done) { | |
647 | prev = blip; | |
648 | blip = blip->li_bio_list; | |
649 | continue; | |
650 | } | |
651 | ||
652 | /* remove from list */ | |
653 | next = blip->li_bio_list; | |
654 | if (!prev) { | |
adadbeef | 655 | bp->b_fspriv = next; |
30136832 DC |
656 | } else { |
657 | prev->li_bio_list = next; | |
658 | } | |
659 | ||
660 | /* add to current list */ | |
661 | blip->li_bio_list = lip->li_bio_list; | |
662 | lip->li_bio_list = blip; | |
663 | ||
664 | /* | |
665 | * while we have the item, do the unlocked check for needing | |
666 | * the AIL lock. | |
667 | */ | |
668 | iip = INODE_ITEM(blip); | |
669 | if (iip->ili_logged && blip->li_lsn == iip->ili_flush_lsn) | |
670 | need_ail++; | |
671 | ||
672 | blip = next; | |
673 | } | |
674 | ||
675 | /* make sure we capture the state of the initial inode. */ | |
676 | iip = INODE_ITEM(lip); | |
677 | if (iip->ili_logged && lip->li_lsn == iip->ili_flush_lsn) | |
678 | need_ail++; | |
1da177e4 LT |
679 | |
680 | /* | |
681 | * We only want to pull the item from the AIL if it is | |
682 | * actually there and its location in the log has not | |
683 | * changed since we started the flush. Thus, we only bother | |
684 | * if the ili_logged flag is set and the inode's lsn has not | |
685 | * changed. First we check the lsn outside | |
686 | * the lock since it's cheaper, and then we recheck while | |
687 | * holding the lock before removing the inode from the AIL. | |
688 | */ | |
30136832 DC |
689 | if (need_ail) { |
690 | struct xfs_log_item *log_items[need_ail]; | |
691 | int i = 0; | |
783a2f65 | 692 | spin_lock(&ailp->xa_lock); |
30136832 DC |
693 | for (blip = lip; blip; blip = blip->li_bio_list) { |
694 | iip = INODE_ITEM(blip); | |
695 | if (iip->ili_logged && | |
696 | blip->li_lsn == iip->ili_flush_lsn) { | |
697 | log_items[i++] = blip; | |
698 | } | |
699 | ASSERT(i <= need_ail); | |
1da177e4 | 700 | } |
30136832 | 701 | /* xfs_trans_ail_delete_bulk() drops the AIL lock. */ |
04913fdd DC |
702 | xfs_trans_ail_delete_bulk(ailp, log_items, i, |
703 | SHUTDOWN_CORRUPT_INCORE); | |
1da177e4 LT |
704 | } |
705 | ||
1da177e4 LT |
706 | |
707 | /* | |
30136832 DC |
708 | * clean up and unlock the flush lock now we are done. We can clear the |
709 | * ili_last_fields bits now that we know that the data corresponding to | |
710 | * them is safely on disk. | |
1da177e4 | 711 | */ |
30136832 DC |
712 | for (blip = lip; blip; blip = next) { |
713 | next = blip->li_bio_list; | |
714 | blip->li_bio_list = NULL; | |
715 | ||
716 | iip = INODE_ITEM(blip); | |
717 | iip->ili_logged = 0; | |
718 | iip->ili_last_fields = 0; | |
719 | xfs_ifunlock(iip->ili_inode); | |
720 | } | |
1da177e4 LT |
721 | } |
722 | ||
723 | /* | |
04913fdd DC |
724 | * This is the inode flushing abort routine. It is called from xfs_iflush when |
725 | * the filesystem is shutting down to clean up the inode state. It is | |
726 | * responsible for removing the inode item from the AIL if it has not been | |
727 | * re-logged, and unlocking the inode's flush lock. | |
1da177e4 LT |
728 | */ |
729 | void | |
730 | xfs_iflush_abort( | |
04913fdd DC |
731 | xfs_inode_t *ip, |
732 | bool stale) | |
1da177e4 | 733 | { |
783a2f65 | 734 | xfs_inode_log_item_t *iip = ip->i_itemp; |
1da177e4 | 735 | |
1da177e4 | 736 | if (iip) { |
783a2f65 | 737 | struct xfs_ail *ailp = iip->ili_item.li_ailp; |
1da177e4 | 738 | if (iip->ili_item.li_flags & XFS_LI_IN_AIL) { |
783a2f65 | 739 | spin_lock(&ailp->xa_lock); |
1da177e4 | 740 | if (iip->ili_item.li_flags & XFS_LI_IN_AIL) { |
783a2f65 | 741 | /* xfs_trans_ail_delete() drops the AIL lock. */ |
04913fdd DC |
742 | xfs_trans_ail_delete(ailp, &iip->ili_item, |
743 | stale ? | |
744 | SHUTDOWN_LOG_IO_ERROR : | |
745 | SHUTDOWN_CORRUPT_INCORE); | |
1da177e4 | 746 | } else |
783a2f65 | 747 | spin_unlock(&ailp->xa_lock); |
1da177e4 LT |
748 | } |
749 | iip->ili_logged = 0; | |
750 | /* | |
751 | * Clear the ili_last_fields bits now that we know that the | |
752 | * data corresponding to them is safely on disk. | |
753 | */ | |
754 | iip->ili_last_fields = 0; | |
755 | /* | |
756 | * Clear the inode logging fields so no more flushes are | |
757 | * attempted. | |
758 | */ | |
f5d8d5c4 | 759 | iip->ili_fields = 0; |
1da177e4 LT |
760 | } |
761 | /* | |
762 | * Release the inode's flush lock since we're done with it. | |
763 | */ | |
764 | xfs_ifunlock(ip); | |
765 | } | |
766 | ||
767 | void | |
768 | xfs_istale_done( | |
ca30b2a7 CH |
769 | struct xfs_buf *bp, |
770 | struct xfs_log_item *lip) | |
1da177e4 | 771 | { |
04913fdd | 772 | xfs_iflush_abort(INODE_ITEM(lip)->ili_inode, true); |
1da177e4 | 773 | } |
6d192a9b TS |
774 | |
775 | /* | |
776 | * convert an xfs_inode_log_format struct from either 32 or 64 bit versions | |
777 | * (which can have different field alignments) to the native version | |
778 | */ | |
779 | int | |
780 | xfs_inode_item_format_convert( | |
781 | xfs_log_iovec_t *buf, | |
782 | xfs_inode_log_format_t *in_f) | |
783 | { | |
784 | if (buf->i_len == sizeof(xfs_inode_log_format_32_t)) { | |
4e0d5f92 | 785 | xfs_inode_log_format_32_t *in_f32 = buf->i_addr; |
6d192a9b | 786 | |
6d192a9b TS |
787 | in_f->ilf_type = in_f32->ilf_type; |
788 | in_f->ilf_size = in_f32->ilf_size; | |
789 | in_f->ilf_fields = in_f32->ilf_fields; | |
790 | in_f->ilf_asize = in_f32->ilf_asize; | |
791 | in_f->ilf_dsize = in_f32->ilf_dsize; | |
792 | in_f->ilf_ino = in_f32->ilf_ino; | |
793 | /* copy biggest field of ilf_u */ | |
794 | memcpy(in_f->ilf_u.ilfu_uuid.__u_bits, | |
795 | in_f32->ilf_u.ilfu_uuid.__u_bits, | |
796 | sizeof(uuid_t)); | |
797 | in_f->ilf_blkno = in_f32->ilf_blkno; | |
798 | in_f->ilf_len = in_f32->ilf_len; | |
799 | in_f->ilf_boffset = in_f32->ilf_boffset; | |
800 | return 0; | |
801 | } else if (buf->i_len == sizeof(xfs_inode_log_format_64_t)){ | |
4e0d5f92 | 802 | xfs_inode_log_format_64_t *in_f64 = buf->i_addr; |
6d192a9b | 803 | |
6d192a9b TS |
804 | in_f->ilf_type = in_f64->ilf_type; |
805 | in_f->ilf_size = in_f64->ilf_size; | |
806 | in_f->ilf_fields = in_f64->ilf_fields; | |
807 | in_f->ilf_asize = in_f64->ilf_asize; | |
808 | in_f->ilf_dsize = in_f64->ilf_dsize; | |
809 | in_f->ilf_ino = in_f64->ilf_ino; | |
810 | /* copy biggest field of ilf_u */ | |
811 | memcpy(in_f->ilf_u.ilfu_uuid.__u_bits, | |
812 | in_f64->ilf_u.ilfu_uuid.__u_bits, | |
813 | sizeof(uuid_t)); | |
814 | in_f->ilf_blkno = in_f64->ilf_blkno; | |
815 | in_f->ilf_len = in_f64->ilf_len; | |
816 | in_f->ilf_boffset = in_f64->ilf_boffset; | |
817 | return 0; | |
818 | } | |
819 | return EFSCORRUPTED; | |
820 | } |