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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include "xfs.h"
Nathan Scotta844f452005-11-02 14:38:42 +110019#include "xfs_fs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include "xfs_types.h"
Nathan Scotta844f452005-11-02 14:38:42 +110021#include "xfs_bit.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include "xfs_log.h"
Nathan Scotta844f452005-11-02 14:38:42 +110023#include "xfs_inum.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include "xfs_trans.h"
25#include "xfs_buf_item.h"
26#include "xfs_sb.h"
Nathan Scotta844f452005-11-02 14:38:42 +110027#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include "xfs_dir2.h"
29#include "xfs_dmapi.h"
30#include "xfs_mount.h"
31#include "xfs_trans_priv.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include "xfs_bmap_btree.h"
Nathan Scotta844f452005-11-02 14:38:42 +110033#include "xfs_alloc_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070034#include "xfs_ialloc_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include "xfs_dir2_sf.h"
Nathan Scotta844f452005-11-02 14:38:42 +110036#include "xfs_attr_sf.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070037#include "xfs_dinode.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#include "xfs_inode.h"
Nathan Scotta844f452005-11-02 14:38:42 +110039#include "xfs_inode_item.h"
40#include "xfs_btree.h"
41#include "xfs_ialloc.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include "xfs_rw.h"
David Chinnerdb7a19f2008-04-10 12:22:24 +100043#include "xfs_error.h"
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000044#include "xfs_trace.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070045
46
47kmem_zone_t *xfs_ili_zone; /* inode log item zone */
48
49/*
50 * This returns the number of iovecs needed to log the given inode item.
51 *
52 * We need one iovec for the inode log format structure, one for the
53 * inode core, and possibly one for the inode data/extents/b-tree root
54 * and one for the inode attribute data/extents/b-tree root.
55 */
56STATIC uint
57xfs_inode_item_size(
58 xfs_inode_log_item_t *iip)
59{
60 uint nvecs;
61 xfs_inode_t *ip;
62
63 ip = iip->ili_inode;
64 nvecs = 2;
65
66 /*
67 * Only log the data/extents/b-tree root if there is something
68 * left to log.
69 */
70 iip->ili_format.ilf_fields |= XFS_ILOG_CORE;
71
72 switch (ip->i_d.di_format) {
73 case XFS_DINODE_FMT_EXTENTS:
74 iip->ili_format.ilf_fields &=
75 ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
76 XFS_ILOG_DEV | XFS_ILOG_UUID);
77 if ((iip->ili_format.ilf_fields & XFS_ILOG_DEXT) &&
78 (ip->i_d.di_nextents > 0) &&
79 (ip->i_df.if_bytes > 0)) {
80 ASSERT(ip->i_df.if_u1.if_extents != NULL);
81 nvecs++;
82 } else {
83 iip->ili_format.ilf_fields &= ~XFS_ILOG_DEXT;
84 }
85 break;
86
87 case XFS_DINODE_FMT_BTREE:
88 ASSERT(ip->i_df.if_ext_max ==
89 XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
90 iip->ili_format.ilf_fields &=
91 ~(XFS_ILOG_DDATA | XFS_ILOG_DEXT |
92 XFS_ILOG_DEV | XFS_ILOG_UUID);
93 if ((iip->ili_format.ilf_fields & XFS_ILOG_DBROOT) &&
94 (ip->i_df.if_broot_bytes > 0)) {
95 ASSERT(ip->i_df.if_broot != NULL);
96 nvecs++;
97 } else {
98 ASSERT(!(iip->ili_format.ilf_fields &
99 XFS_ILOG_DBROOT));
100#ifdef XFS_TRANS_DEBUG
101 if (iip->ili_root_size > 0) {
102 ASSERT(iip->ili_root_size ==
103 ip->i_df.if_broot_bytes);
104 ASSERT(memcmp(iip->ili_orig_root,
105 ip->i_df.if_broot,
106 iip->ili_root_size) == 0);
107 } else {
108 ASSERT(ip->i_df.if_broot_bytes == 0);
109 }
110#endif
111 iip->ili_format.ilf_fields &= ~XFS_ILOG_DBROOT;
112 }
113 break;
114
115 case XFS_DINODE_FMT_LOCAL:
116 iip->ili_format.ilf_fields &=
117 ~(XFS_ILOG_DEXT | XFS_ILOG_DBROOT |
118 XFS_ILOG_DEV | XFS_ILOG_UUID);
119 if ((iip->ili_format.ilf_fields & XFS_ILOG_DDATA) &&
120 (ip->i_df.if_bytes > 0)) {
121 ASSERT(ip->i_df.if_u1.if_data != NULL);
122 ASSERT(ip->i_d.di_size > 0);
123 nvecs++;
124 } else {
125 iip->ili_format.ilf_fields &= ~XFS_ILOG_DDATA;
126 }
127 break;
128
129 case XFS_DINODE_FMT_DEV:
130 iip->ili_format.ilf_fields &=
131 ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
132 XFS_ILOG_DEXT | XFS_ILOG_UUID);
133 break;
134
135 case XFS_DINODE_FMT_UUID:
136 iip->ili_format.ilf_fields &=
137 ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
138 XFS_ILOG_DEXT | XFS_ILOG_DEV);
139 break;
140
141 default:
142 ASSERT(0);
143 break;
144 }
145
146 /*
147 * If there are no attributes associated with this file,
148 * then there cannot be anything more to log.
149 * Clear all attribute-related log flags.
150 */
151 if (!XFS_IFORK_Q(ip)) {
152 iip->ili_format.ilf_fields &=
153 ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT);
154 return nvecs;
155 }
156
157 /*
158 * Log any necessary attribute data.
159 */
160 switch (ip->i_d.di_aformat) {
161 case XFS_DINODE_FMT_EXTENTS:
162 iip->ili_format.ilf_fields &=
163 ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT);
164 if ((iip->ili_format.ilf_fields & XFS_ILOG_AEXT) &&
165 (ip->i_d.di_anextents > 0) &&
166 (ip->i_afp->if_bytes > 0)) {
167 ASSERT(ip->i_afp->if_u1.if_extents != NULL);
168 nvecs++;
169 } else {
170 iip->ili_format.ilf_fields &= ~XFS_ILOG_AEXT;
171 }
172 break;
173
174 case XFS_DINODE_FMT_BTREE:
175 iip->ili_format.ilf_fields &=
176 ~(XFS_ILOG_ADATA | XFS_ILOG_AEXT);
177 if ((iip->ili_format.ilf_fields & XFS_ILOG_ABROOT) &&
178 (ip->i_afp->if_broot_bytes > 0)) {
179 ASSERT(ip->i_afp->if_broot != NULL);
180 nvecs++;
181 } else {
182 iip->ili_format.ilf_fields &= ~XFS_ILOG_ABROOT;
183 }
184 break;
185
186 case XFS_DINODE_FMT_LOCAL:
187 iip->ili_format.ilf_fields &=
188 ~(XFS_ILOG_AEXT | XFS_ILOG_ABROOT);
189 if ((iip->ili_format.ilf_fields & XFS_ILOG_ADATA) &&
190 (ip->i_afp->if_bytes > 0)) {
191 ASSERT(ip->i_afp->if_u1.if_data != NULL);
192 nvecs++;
193 } else {
194 iip->ili_format.ilf_fields &= ~XFS_ILOG_ADATA;
195 }
196 break;
197
198 default:
199 ASSERT(0);
200 break;
201 }
202
203 return nvecs;
204}
205
206/*
207 * This is called to fill in the vector of log iovecs for the
208 * given inode log item. It fills the first item with an inode
209 * log format structure, the second with the on-disk inode structure,
210 * and a possible third and/or fourth with the inode data/extents/b-tree
211 * root and inode attributes data/extents/b-tree root.
212 */
213STATIC void
214xfs_inode_item_format(
215 xfs_inode_log_item_t *iip,
216 xfs_log_iovec_t *log_vector)
217{
218 uint nvecs;
219 xfs_log_iovec_t *vecp;
220 xfs_inode_t *ip;
221 size_t data_bytes;
222 xfs_bmbt_rec_t *ext_buffer;
223 int nrecs;
224 xfs_mount_t *mp;
225
226 ip = iip->ili_inode;
227 vecp = log_vector;
228
229 vecp->i_addr = (xfs_caddr_t)&iip->ili_format;
230 vecp->i_len = sizeof(xfs_inode_log_format_t);
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000231 vecp->i_type = XLOG_REG_TYPE_IFORMAT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 vecp++;
233 nvecs = 1;
234
235 /*
Christoph Hellwigf9581b12009-10-06 20:29:26 +0000236 * Make sure the linux inode is dirty. We do this before
237 * clearing i_update_core as the VFS will call back into
238 * XFS here and set i_update_core, so we need to dirty the
239 * inode first so that the ordering of i_update_core and
240 * unlogged modifications still works as described below.
241 */
242 xfs_mark_inode_dirty_sync(ip);
243
244 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 * Clear i_update_core if the timestamps (or any other
246 * non-transactional modification) need flushing/logging
247 * and we're about to log them with the rest of the core.
248 *
249 * This is the same logic as xfs_iflush() but this code can't
250 * run at the same time as xfs_iflush because we're in commit
251 * processing here and so we have the inode lock held in
252 * exclusive mode. Although it doesn't really matter
253 * for the timestamps if both routines were to grab the
254 * timestamps or not. That would be ok.
255 *
256 * We clear i_update_core before copying out the data.
257 * This is for coordination with our timestamp updates
258 * that don't hold the inode lock. They will always
259 * update the timestamps BEFORE setting i_update_core,
260 * so if we clear i_update_core after they set it we
261 * are guaranteed to see their updates to the timestamps
262 * either here. Likewise, if they set it after we clear it
263 * here, we'll see it either on the next commit of this
264 * inode or the next time the inode gets flushed via
265 * xfs_iflush(). This depends on strongly ordered memory
266 * semantics, but we have that. We use the SYNCHRONIZE
267 * macro to make sure that the compiler does not reorder
268 * the i_update_core access below the data copy below.
269 */
270 if (ip->i_update_core) {
271 ip->i_update_core = 0;
272 SYNCHRONIZE();
273 }
274
275 /*
Christoph Hellwigf9581b12009-10-06 20:29:26 +0000276 * Make sure to get the latest timestamps from the Linux inode.
Christoph Hellwig42fe2b12006-01-11 15:35:17 +1100277 */
Christoph Hellwigf9581b12009-10-06 20:29:26 +0000278 xfs_synchronize_times(ip);
David Chinner5d51eff2007-11-23 16:29:18 +1100279
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 vecp->i_addr = (xfs_caddr_t)&ip->i_d;
Christoph Hellwig81591fe2008-11-28 14:23:39 +1100281 vecp->i_len = sizeof(struct xfs_icdinode);
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000282 vecp->i_type = XLOG_REG_TYPE_ICORE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 vecp++;
284 nvecs++;
285 iip->ili_format.ilf_fields |= XFS_ILOG_CORE;
286
287 /*
288 * If this is really an old format inode, then we need to
289 * log it as such. This means that we have to copy the link
290 * count from the new field to the old. We don't have to worry
291 * about the new fields, because nothing trusts them as long as
292 * the old inode version number is there. If the superblock already
293 * has a new version number, then we don't bother converting back.
294 */
295 mp = ip->i_mount;
Christoph Hellwig51ce16d2008-11-28 14:23:39 +1100296 ASSERT(ip->i_d.di_version == 1 || xfs_sb_version_hasnlink(&mp->m_sb));
297 if (ip->i_d.di_version == 1) {
Eric Sandeen62118702008-03-06 13:44:28 +1100298 if (!xfs_sb_version_hasnlink(&mp->m_sb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 /*
300 * Convert it back.
301 */
302 ASSERT(ip->i_d.di_nlink <= XFS_MAXLINK_1);
303 ip->i_d.di_onlink = ip->i_d.di_nlink;
304 } else {
305 /*
306 * The superblock version has already been bumped,
307 * so just make the conversion to the new inode
308 * format permanent.
309 */
Christoph Hellwig51ce16d2008-11-28 14:23:39 +1100310 ip->i_d.di_version = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 ip->i_d.di_onlink = 0;
312 memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad));
313 }
314 }
315
316 switch (ip->i_d.di_format) {
317 case XFS_DINODE_FMT_EXTENTS:
318 ASSERT(!(iip->ili_format.ilf_fields &
319 (XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
320 XFS_ILOG_DEV | XFS_ILOG_UUID)));
321 if (iip->ili_format.ilf_fields & XFS_ILOG_DEXT) {
322 ASSERT(ip->i_df.if_bytes > 0);
323 ASSERT(ip->i_df.if_u1.if_extents != NULL);
324 ASSERT(ip->i_d.di_nextents > 0);
325 ASSERT(iip->ili_extents_buf == NULL);
326 nrecs = ip->i_df.if_bytes /
327 (uint)sizeof(xfs_bmbt_rec_t);
328 ASSERT(nrecs > 0);
Nathan Scottf016bad2005-09-08 15:30:05 +1000329#ifdef XFS_NATIVE_HOST
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 if (nrecs == ip->i_d.di_nextents) {
331 /*
332 * There are no delayed allocation
333 * extents, so just point to the
334 * real extents array.
335 */
336 vecp->i_addr =
337 (char *)(ip->i_df.if_u1.if_extents);
338 vecp->i_len = ip->i_df.if_bytes;
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000339 vecp->i_type = XLOG_REG_TYPE_IEXT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 } else
341#endif
342 {
343 /*
344 * There are delayed allocation extents
345 * in the inode, or we need to convert
346 * the extents to on disk format.
347 * Use xfs_iextents_copy()
348 * to copy only the real extents into
349 * a separate buffer. We'll free the
350 * buffer in the unlock routine.
351 */
352 ext_buffer = kmem_alloc(ip->i_df.if_bytes,
353 KM_SLEEP);
354 iip->ili_extents_buf = ext_buffer;
355 vecp->i_addr = (xfs_caddr_t)ext_buffer;
356 vecp->i_len = xfs_iextents_copy(ip, ext_buffer,
357 XFS_DATA_FORK);
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000358 vecp->i_type = XLOG_REG_TYPE_IEXT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 }
360 ASSERT(vecp->i_len <= ip->i_df.if_bytes);
361 iip->ili_format.ilf_dsize = vecp->i_len;
362 vecp++;
363 nvecs++;
364 }
365 break;
366
367 case XFS_DINODE_FMT_BTREE:
368 ASSERT(!(iip->ili_format.ilf_fields &
369 (XFS_ILOG_DDATA | XFS_ILOG_DEXT |
370 XFS_ILOG_DEV | XFS_ILOG_UUID)));
371 if (iip->ili_format.ilf_fields & XFS_ILOG_DBROOT) {
372 ASSERT(ip->i_df.if_broot_bytes > 0);
373 ASSERT(ip->i_df.if_broot != NULL);
374 vecp->i_addr = (xfs_caddr_t)ip->i_df.if_broot;
375 vecp->i_len = ip->i_df.if_broot_bytes;
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000376 vecp->i_type = XLOG_REG_TYPE_IBROOT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 vecp++;
378 nvecs++;
379 iip->ili_format.ilf_dsize = ip->i_df.if_broot_bytes;
380 }
381 break;
382
383 case XFS_DINODE_FMT_LOCAL:
384 ASSERT(!(iip->ili_format.ilf_fields &
385 (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
386 XFS_ILOG_DEV | XFS_ILOG_UUID)));
387 if (iip->ili_format.ilf_fields & XFS_ILOG_DDATA) {
388 ASSERT(ip->i_df.if_bytes > 0);
389 ASSERT(ip->i_df.if_u1.if_data != NULL);
390 ASSERT(ip->i_d.di_size > 0);
391
392 vecp->i_addr = (xfs_caddr_t)ip->i_df.if_u1.if_data;
393 /*
394 * Round i_bytes up to a word boundary.
395 * The underlying memory is guaranteed to
396 * to be there by xfs_idata_realloc().
397 */
398 data_bytes = roundup(ip->i_df.if_bytes, 4);
399 ASSERT((ip->i_df.if_real_bytes == 0) ||
400 (ip->i_df.if_real_bytes == data_bytes));
401 vecp->i_len = (int)data_bytes;
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000402 vecp->i_type = XLOG_REG_TYPE_ILOCAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 vecp++;
404 nvecs++;
405 iip->ili_format.ilf_dsize = (unsigned)data_bytes;
406 }
407 break;
408
409 case XFS_DINODE_FMT_DEV:
410 ASSERT(!(iip->ili_format.ilf_fields &
411 (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
412 XFS_ILOG_DDATA | XFS_ILOG_UUID)));
413 if (iip->ili_format.ilf_fields & XFS_ILOG_DEV) {
414 iip->ili_format.ilf_u.ilfu_rdev =
415 ip->i_df.if_u2.if_rdev;
416 }
417 break;
418
419 case XFS_DINODE_FMT_UUID:
420 ASSERT(!(iip->ili_format.ilf_fields &
421 (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
422 XFS_ILOG_DDATA | XFS_ILOG_DEV)));
423 if (iip->ili_format.ilf_fields & XFS_ILOG_UUID) {
424 iip->ili_format.ilf_u.ilfu_uuid =
425 ip->i_df.if_u2.if_uuid;
426 }
427 break;
428
429 default:
430 ASSERT(0);
431 break;
432 }
433
434 /*
435 * If there are no attributes associated with the file,
436 * then we're done.
437 * Assert that no attribute-related log flags are set.
438 */
439 if (!XFS_IFORK_Q(ip)) {
440 ASSERT(nvecs == iip->ili_item.li_desc->lid_size);
441 iip->ili_format.ilf_size = nvecs;
442 ASSERT(!(iip->ili_format.ilf_fields &
443 (XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT)));
444 return;
445 }
446
447 switch (ip->i_d.di_aformat) {
448 case XFS_DINODE_FMT_EXTENTS:
449 ASSERT(!(iip->ili_format.ilf_fields &
450 (XFS_ILOG_ADATA | XFS_ILOG_ABROOT)));
451 if (iip->ili_format.ilf_fields & XFS_ILOG_AEXT) {
452 ASSERT(ip->i_afp->if_bytes > 0);
453 ASSERT(ip->i_afp->if_u1.if_extents != NULL);
454 ASSERT(ip->i_d.di_anextents > 0);
455#ifdef DEBUG
456 nrecs = ip->i_afp->if_bytes /
457 (uint)sizeof(xfs_bmbt_rec_t);
458#endif
459 ASSERT(nrecs > 0);
460 ASSERT(nrecs == ip->i_d.di_anextents);
Nathan Scottf016bad2005-09-08 15:30:05 +1000461#ifdef XFS_NATIVE_HOST
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 /*
463 * There are not delayed allocation extents
464 * for attributes, so just point at the array.
465 */
466 vecp->i_addr = (char *)(ip->i_afp->if_u1.if_extents);
467 vecp->i_len = ip->i_afp->if_bytes;
468#else
469 ASSERT(iip->ili_aextents_buf == NULL);
470 /*
471 * Need to endian flip before logging
472 */
473 ext_buffer = kmem_alloc(ip->i_afp->if_bytes,
474 KM_SLEEP);
475 iip->ili_aextents_buf = ext_buffer;
476 vecp->i_addr = (xfs_caddr_t)ext_buffer;
477 vecp->i_len = xfs_iextents_copy(ip, ext_buffer,
478 XFS_ATTR_FORK);
479#endif
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000480 vecp->i_type = XLOG_REG_TYPE_IATTR_EXT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 iip->ili_format.ilf_asize = vecp->i_len;
482 vecp++;
483 nvecs++;
484 }
485 break;
486
487 case XFS_DINODE_FMT_BTREE:
488 ASSERT(!(iip->ili_format.ilf_fields &
489 (XFS_ILOG_ADATA | XFS_ILOG_AEXT)));
490 if (iip->ili_format.ilf_fields & XFS_ILOG_ABROOT) {
491 ASSERT(ip->i_afp->if_broot_bytes > 0);
492 ASSERT(ip->i_afp->if_broot != NULL);
493 vecp->i_addr = (xfs_caddr_t)ip->i_afp->if_broot;
494 vecp->i_len = ip->i_afp->if_broot_bytes;
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000495 vecp->i_type = XLOG_REG_TYPE_IATTR_BROOT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 vecp++;
497 nvecs++;
498 iip->ili_format.ilf_asize = ip->i_afp->if_broot_bytes;
499 }
500 break;
501
502 case XFS_DINODE_FMT_LOCAL:
503 ASSERT(!(iip->ili_format.ilf_fields &
504 (XFS_ILOG_ABROOT | XFS_ILOG_AEXT)));
505 if (iip->ili_format.ilf_fields & XFS_ILOG_ADATA) {
506 ASSERT(ip->i_afp->if_bytes > 0);
507 ASSERT(ip->i_afp->if_u1.if_data != NULL);
508
509 vecp->i_addr = (xfs_caddr_t)ip->i_afp->if_u1.if_data;
510 /*
511 * Round i_bytes up to a word boundary.
512 * The underlying memory is guaranteed to
513 * to be there by xfs_idata_realloc().
514 */
515 data_bytes = roundup(ip->i_afp->if_bytes, 4);
516 ASSERT((ip->i_afp->if_real_bytes == 0) ||
517 (ip->i_afp->if_real_bytes == data_bytes));
518 vecp->i_len = (int)data_bytes;
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000519 vecp->i_type = XLOG_REG_TYPE_IATTR_LOCAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 vecp++;
521 nvecs++;
522 iip->ili_format.ilf_asize = (unsigned)data_bytes;
523 }
524 break;
525
526 default:
527 ASSERT(0);
528 break;
529 }
530
531 ASSERT(nvecs == iip->ili_item.li_desc->lid_size);
532 iip->ili_format.ilf_size = nvecs;
533}
534
535
536/*
537 * This is called to pin the inode associated with the inode log
Christoph Hellwiga14a5ab2010-02-18 12:43:22 +0000538 * item in memory so it cannot be written out.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 */
540STATIC void
541xfs_inode_item_pin(
542 xfs_inode_log_item_t *iip)
543{
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000544 ASSERT(xfs_isilocked(iip->ili_inode, XFS_ILOCK_EXCL));
Christoph Hellwiga14a5ab2010-02-18 12:43:22 +0000545
546 atomic_inc(&iip->ili_inode->i_pincount);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547}
548
549
550/*
551 * This is called to unpin the inode associated with the inode log
552 * item which was previously pinned with a call to xfs_inode_item_pin().
Christoph Hellwiga14a5ab2010-02-18 12:43:22 +0000553 *
554 * Also wake up anyone in xfs_iunpin_wait() if the count goes to 0.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 */
556/* ARGSUSED */
557STATIC void
558xfs_inode_item_unpin(
559 xfs_inode_log_item_t *iip,
560 int stale)
561{
Christoph Hellwiga14a5ab2010-02-18 12:43:22 +0000562 struct xfs_inode *ip = iip->ili_inode;
563
564 ASSERT(atomic_read(&ip->i_pincount) > 0);
565 if (atomic_dec_and_test(&ip->i_pincount))
566 wake_up(&ip->i_ipin_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567}
568
569/* ARGSUSED */
570STATIC void
571xfs_inode_item_unpin_remove(
572 xfs_inode_log_item_t *iip,
573 xfs_trans_t *tp)
574{
Christoph Hellwiga14a5ab2010-02-18 12:43:22 +0000575 xfs_inode_item_unpin(iip, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576}
577
578/*
579 * This is called to attempt to lock the inode associated with this
580 * inode log item, in preparation for the push routine which does the actual
581 * iflush. Don't sleep on the inode lock or the flush lock.
582 *
583 * If the flush lock is already held, indicating that the inode has
584 * been or is in the process of being flushed, then (ideally) we'd like to
585 * see if the inode's buffer is still incore, and if so give it a nudge.
586 * We delay doing so until the pushbuf routine, though, to avoid holding
Nathan Scottc41564b2006-03-29 08:55:14 +1000587 * the AIL lock across a call to the blackhole which is the buffer cache.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 * Also we don't want to sleep in any device strategy routines, which can happen
589 * if we do the subsequent bawrite in here.
590 */
591STATIC uint
592xfs_inode_item_trylock(
593 xfs_inode_log_item_t *iip)
594{
595 register xfs_inode_t *ip;
596
597 ip = iip->ili_inode;
598
599 if (xfs_ipincount(ip) > 0) {
600 return XFS_ITEM_PINNED;
601 }
602
603 if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) {
604 return XFS_ITEM_LOCKED;
605 }
606
607 if (!xfs_iflock_nowait(ip)) {
608 /*
Dave Chinnerd808f612010-02-02 10:13:42 +1100609 * inode has already been flushed to the backing buffer,
610 * leave it locked in shared mode, pushbuf routine will
611 * unlock it.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 */
Dave Chinnerd808f612010-02-02 10:13:42 +1100613 return XFS_ITEM_PUSHBUF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614 }
615
616 /* Stale items should force out the iclog */
617 if (ip->i_flags & XFS_ISTALE) {
618 xfs_ifunlock(ip);
Dave Chinnerd808f612010-02-02 10:13:42 +1100619 /*
620 * we hold the AIL lock - notify the unlock routine of this
621 * so it doesn't try to get the lock again.
622 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 xfs_iunlock(ip, XFS_ILOCK_SHARED|XFS_IUNLOCK_NONOTIFY);
624 return XFS_ITEM_PINNED;
625 }
626
627#ifdef DEBUG
628 if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) {
629 ASSERT(iip->ili_format.ilf_fields != 0);
630 ASSERT(iip->ili_logged == 0);
631 ASSERT(iip->ili_item.li_flags & XFS_LI_IN_AIL);
632 }
633#endif
634 return XFS_ITEM_SUCCESS;
635}
636
637/*
638 * Unlock the inode associated with the inode log item.
639 * Clear the fields of the inode and inode log item that
640 * are specific to the current transaction. If the
641 * hold flags is set, do not unlock the inode.
642 */
643STATIC void
644xfs_inode_item_unlock(
645 xfs_inode_log_item_t *iip)
646{
647 uint hold;
648 uint iolocked;
649 uint lock_flags;
650 xfs_inode_t *ip;
651
652 ASSERT(iip != NULL);
653 ASSERT(iip->ili_inode->i_itemp != NULL);
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000654 ASSERT(xfs_isilocked(iip->ili_inode, XFS_ILOCK_EXCL));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 ASSERT((!(iip->ili_inode->i_itemp->ili_flags &
656 XFS_ILI_IOLOCKED_EXCL)) ||
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000657 xfs_isilocked(iip->ili_inode, XFS_IOLOCK_EXCL));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 ASSERT((!(iip->ili_inode->i_itemp->ili_flags &
659 XFS_ILI_IOLOCKED_SHARED)) ||
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000660 xfs_isilocked(iip->ili_inode, XFS_IOLOCK_SHARED));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 /*
662 * Clear the transaction pointer in the inode.
663 */
664 ip = iip->ili_inode;
665 ip->i_transp = NULL;
666
667 /*
668 * If the inode needed a separate buffer with which to log
669 * its extents, then free it now.
670 */
671 if (iip->ili_extents_buf != NULL) {
672 ASSERT(ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS);
673 ASSERT(ip->i_d.di_nextents > 0);
674 ASSERT(iip->ili_format.ilf_fields & XFS_ILOG_DEXT);
675 ASSERT(ip->i_df.if_bytes > 0);
Denys Vlasenkof0e2d932008-05-19 16:31:57 +1000676 kmem_free(iip->ili_extents_buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 iip->ili_extents_buf = NULL;
678 }
679 if (iip->ili_aextents_buf != NULL) {
680 ASSERT(ip->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS);
681 ASSERT(ip->i_d.di_anextents > 0);
682 ASSERT(iip->ili_format.ilf_fields & XFS_ILOG_AEXT);
683 ASSERT(ip->i_afp->if_bytes > 0);
Denys Vlasenkof0e2d932008-05-19 16:31:57 +1000684 kmem_free(iip->ili_aextents_buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 iip->ili_aextents_buf = NULL;
686 }
687
688 /*
689 * Figure out if we should unlock the inode or not.
690 */
691 hold = iip->ili_flags & XFS_ILI_HOLD;
692
693 /*
694 * Before clearing out the flags, remember whether we
695 * are holding the inode's IO lock.
696 */
697 iolocked = iip->ili_flags & XFS_ILI_IOLOCKED_ANY;
698
699 /*
700 * Clear out the fields of the inode log item particular
701 * to the current transaction.
702 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 iip->ili_flags = 0;
704
705 /*
706 * Unlock the inode if XFS_ILI_HOLD was not set.
707 */
708 if (!hold) {
709 lock_flags = XFS_ILOCK_EXCL;
710 if (iolocked & XFS_ILI_IOLOCKED_EXCL) {
711 lock_flags |= XFS_IOLOCK_EXCL;
712 } else if (iolocked & XFS_ILI_IOLOCKED_SHARED) {
713 lock_flags |= XFS_IOLOCK_SHARED;
714 }
715 xfs_iput(iip->ili_inode, lock_flags);
716 }
717}
718
719/*
720 * This is called to find out where the oldest active copy of the
721 * inode log item in the on disk log resides now that the last log
722 * write of it completed at the given lsn. Since we always re-log
723 * all dirty data in an inode, the latest copy in the on disk log
724 * is the only one that matters. Therefore, simply return the
725 * given lsn.
726 */
727/*ARGSUSED*/
728STATIC xfs_lsn_t
729xfs_inode_item_committed(
730 xfs_inode_log_item_t *iip,
731 xfs_lsn_t lsn)
732{
733 return (lsn);
734}
735
736/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737 * This gets called by xfs_trans_push_ail(), when IOP_TRYLOCK
738 * failed to get the inode flush lock but did get the inode locked SHARED.
739 * Here we're trying to see if the inode buffer is incore, and if so whether it's
Dave Chinnerd808f612010-02-02 10:13:42 +1100740 * marked delayed write. If that's the case, we'll promote it and that will
741 * allow the caller to write the buffer by triggering the xfsbufd to run.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742 */
743STATIC void
744xfs_inode_item_pushbuf(
745 xfs_inode_log_item_t *iip)
746{
747 xfs_inode_t *ip;
748 xfs_mount_t *mp;
749 xfs_buf_t *bp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750
751 ip = iip->ili_inode;
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000752 ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753
754 /*
David Chinnerc63942d2008-08-13 16:41:16 +1000755 * If a flush is not in progress anymore, chances are that the
756 * inode was taken off the AIL. So, just get out.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757 */
David Chinnerc63942d2008-08-13 16:41:16 +1000758 if (completion_done(&ip->i_flush) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 ((iip->ili_item.li_flags & XFS_LI_IN_AIL) == 0)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 xfs_iunlock(ip, XFS_ILOCK_SHARED);
761 return;
762 }
763
764 mp = ip->i_mount;
765 bp = xfs_incore(mp->m_ddev_targp, iip->ili_format.ilf_blkno,
Christoph Hellwig0cadda12010-01-19 09:56:44 +0000766 iip->ili_format.ilf_len, XBF_TRYLOCK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 xfs_iunlock(ip, XFS_ILOCK_SHARED);
Dave Chinnerd808f612010-02-02 10:13:42 +1100769 if (!bp)
770 return;
771 if (XFS_BUF_ISDELAYWRITE(bp))
772 xfs_buf_delwri_promote(bp);
773 xfs_buf_relse(bp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774 return;
775}
776
777
778/*
779 * This is called to asynchronously write the inode associated with this
780 * inode log item out to disk. The inode will already have been locked by
781 * a successful call to xfs_inode_item_trylock().
782 */
783STATIC void
784xfs_inode_item_push(
785 xfs_inode_log_item_t *iip)
786{
787 xfs_inode_t *ip;
788
789 ip = iip->ili_inode;
790
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000791 ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED));
David Chinnerc63942d2008-08-13 16:41:16 +1000792 ASSERT(!completion_done(&ip->i_flush));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793 /*
794 * Since we were able to lock the inode's flush lock and
795 * we found it on the AIL, the inode must be dirty. This
796 * is because the inode is removed from the AIL while still
797 * holding the flush lock in xfs_iflush_done(). Thus, if
798 * we found it in the AIL and were able to obtain the flush
799 * lock without sleeping, then there must not have been
800 * anyone in the process of flushing the inode.
801 */
802 ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) ||
803 iip->ili_format.ilf_fields != 0);
804
805 /*
Dave Chinnerc8543632010-02-06 12:39:36 +1100806 * Push the inode to it's backing buffer. This will not remove the
807 * inode from the AIL - a further push will be required to trigger a
808 * buffer push. However, this allows all the dirty inodes to be pushed
809 * to the buffer before it is pushed to disk. THe buffer IO completion
810 * will pull th einode from the AIL, mark it clean and unlock the flush
811 * lock.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812 */
Dave Chinnerc8543632010-02-06 12:39:36 +1100813 (void) xfs_iflush(ip, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814 xfs_iunlock(ip, XFS_ILOCK_SHARED);
815
816 return;
817}
818
819/*
820 * XXX rcc - this one really has to do something. Probably needs
821 * to stamp in a new field in the incore inode.
822 */
823/* ARGSUSED */
824STATIC void
825xfs_inode_item_committing(
826 xfs_inode_log_item_t *iip,
827 xfs_lsn_t lsn)
828{
829 iip->ili_last_lsn = lsn;
830 return;
831}
832
833/*
834 * This is the ops vector shared by all buf log items.
835 */
David Chinner7989cb82007-02-10 18:34:56 +1100836static struct xfs_item_ops xfs_inode_item_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837 .iop_size = (uint(*)(xfs_log_item_t*))xfs_inode_item_size,
838 .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
839 xfs_inode_item_format,
840 .iop_pin = (void(*)(xfs_log_item_t*))xfs_inode_item_pin,
841 .iop_unpin = (void(*)(xfs_log_item_t*, int))xfs_inode_item_unpin,
842 .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t*))
843 xfs_inode_item_unpin_remove,
844 .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_inode_item_trylock,
845 .iop_unlock = (void(*)(xfs_log_item_t*))xfs_inode_item_unlock,
846 .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t))
847 xfs_inode_item_committed,
848 .iop_push = (void(*)(xfs_log_item_t*))xfs_inode_item_push,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849 .iop_pushbuf = (void(*)(xfs_log_item_t*))xfs_inode_item_pushbuf,
850 .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t))
851 xfs_inode_item_committing
852};
853
854
855/*
856 * Initialize the inode log item for a newly allocated (in-core) inode.
857 */
858void
859xfs_inode_item_init(
860 xfs_inode_t *ip,
861 xfs_mount_t *mp)
862{
863 xfs_inode_log_item_t *iip;
864
865 ASSERT(ip->i_itemp == NULL);
866 iip = ip->i_itemp = kmem_zone_zalloc(xfs_ili_zone, KM_SLEEP);
867
868 iip->ili_item.li_type = XFS_LI_INODE;
869 iip->ili_item.li_ops = &xfs_inode_item_ops;
870 iip->ili_item.li_mountp = mp;
David Chinnerfc1829f2008-10-30 17:39:46 +1100871 iip->ili_item.li_ailp = mp->m_ail;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872 iip->ili_inode = ip;
873
874 /*
875 We have zeroed memory. No need ...
876 iip->ili_extents_buf = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877 */
878
879 iip->ili_format.ilf_type = XFS_LI_INODE;
880 iip->ili_format.ilf_ino = ip->i_ino;
Christoph Hellwig92bfc6e2008-11-28 14:23:41 +1100881 iip->ili_format.ilf_blkno = ip->i_imap.im_blkno;
882 iip->ili_format.ilf_len = ip->i_imap.im_len;
883 iip->ili_format.ilf_boffset = ip->i_imap.im_boffset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884}
885
886/*
887 * Free the inode log item and any memory hanging off of it.
888 */
889void
890xfs_inode_item_destroy(
891 xfs_inode_t *ip)
892{
893#ifdef XFS_TRANS_DEBUG
894 if (ip->i_itemp->ili_root_size != 0) {
Denys Vlasenkof0e2d932008-05-19 16:31:57 +1000895 kmem_free(ip->i_itemp->ili_orig_root);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896 }
897#endif
898 kmem_zone_free(xfs_ili_zone, ip->i_itemp);
899}
900
901
902/*
903 * This is the inode flushing I/O completion routine. It is called
904 * from interrupt level when the buffer containing the inode is
905 * flushed to disk. It is responsible for removing the inode item
906 * from the AIL if it has not been re-logged, and unlocking the inode's
907 * flush lock.
908 */
909/*ARGSUSED*/
910void
911xfs_iflush_done(
912 xfs_buf_t *bp,
913 xfs_inode_log_item_t *iip)
914{
David Chinner783a2f62008-10-30 17:39:58 +1100915 xfs_inode_t *ip = iip->ili_inode;
916 struct xfs_ail *ailp = iip->ili_item.li_ailp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917
918 /*
919 * We only want to pull the item from the AIL if it is
920 * actually there and its location in the log has not
921 * changed since we started the flush. Thus, we only bother
922 * if the ili_logged flag is set and the inode's lsn has not
923 * changed. First we check the lsn outside
924 * the lock since it's cheaper, and then we recheck while
925 * holding the lock before removing the inode from the AIL.
926 */
927 if (iip->ili_logged &&
928 (iip->ili_item.li_lsn == iip->ili_flush_lsn)) {
David Chinner783a2f62008-10-30 17:39:58 +1100929 spin_lock(&ailp->xa_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930 if (iip->ili_item.li_lsn == iip->ili_flush_lsn) {
David Chinner783a2f62008-10-30 17:39:58 +1100931 /* xfs_trans_ail_delete() drops the AIL lock. */
932 xfs_trans_ail_delete(ailp, (xfs_log_item_t*)iip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933 } else {
David Chinner783a2f62008-10-30 17:39:58 +1100934 spin_unlock(&ailp->xa_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935 }
936 }
937
938 iip->ili_logged = 0;
939
940 /*
941 * Clear the ili_last_fields bits now that we know that the
942 * data corresponding to them is safely on disk.
943 */
944 iip->ili_last_fields = 0;
945
946 /*
947 * Release the inode's flush lock since we're done with it.
948 */
949 xfs_ifunlock(ip);
950
951 return;
952}
953
954/*
955 * This is the inode flushing abort routine. It is called
956 * from xfs_iflush when the filesystem is shutting down to clean
957 * up the inode state.
958 * It is responsible for removing the inode item
959 * from the AIL if it has not been re-logged, and unlocking the inode's
960 * flush lock.
961 */
962void
963xfs_iflush_abort(
964 xfs_inode_t *ip)
965{
David Chinner783a2f62008-10-30 17:39:58 +1100966 xfs_inode_log_item_t *iip = ip->i_itemp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 xfs_mount_t *mp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968
969 iip = ip->i_itemp;
970 mp = ip->i_mount;
971 if (iip) {
David Chinner783a2f62008-10-30 17:39:58 +1100972 struct xfs_ail *ailp = iip->ili_item.li_ailp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973 if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
David Chinner783a2f62008-10-30 17:39:58 +1100974 spin_lock(&ailp->xa_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975 if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
David Chinner783a2f62008-10-30 17:39:58 +1100976 /* xfs_trans_ail_delete() drops the AIL lock. */
977 xfs_trans_ail_delete(ailp, (xfs_log_item_t *)iip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978 } else
David Chinner783a2f62008-10-30 17:39:58 +1100979 spin_unlock(&ailp->xa_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980 }
981 iip->ili_logged = 0;
982 /*
983 * Clear the ili_last_fields bits now that we know that the
984 * data corresponding to them is safely on disk.
985 */
986 iip->ili_last_fields = 0;
987 /*
988 * Clear the inode logging fields so no more flushes are
989 * attempted.
990 */
991 iip->ili_format.ilf_fields = 0;
992 }
993 /*
994 * Release the inode's flush lock since we're done with it.
995 */
996 xfs_ifunlock(ip);
997}
998
999void
1000xfs_istale_done(
1001 xfs_buf_t *bp,
1002 xfs_inode_log_item_t *iip)
1003{
1004 xfs_iflush_abort(iip->ili_inode);
1005}
Tim Shimmin6d192a92006-06-09 14:55:38 +10001006
1007/*
1008 * convert an xfs_inode_log_format struct from either 32 or 64 bit versions
1009 * (which can have different field alignments) to the native version
1010 */
1011int
1012xfs_inode_item_format_convert(
1013 xfs_log_iovec_t *buf,
1014 xfs_inode_log_format_t *in_f)
1015{
1016 if (buf->i_len == sizeof(xfs_inode_log_format_32_t)) {
1017 xfs_inode_log_format_32_t *in_f32;
1018
1019 in_f32 = (xfs_inode_log_format_32_t *)buf->i_addr;
1020 in_f->ilf_type = in_f32->ilf_type;
1021 in_f->ilf_size = in_f32->ilf_size;
1022 in_f->ilf_fields = in_f32->ilf_fields;
1023 in_f->ilf_asize = in_f32->ilf_asize;
1024 in_f->ilf_dsize = in_f32->ilf_dsize;
1025 in_f->ilf_ino = in_f32->ilf_ino;
1026 /* copy biggest field of ilf_u */
1027 memcpy(in_f->ilf_u.ilfu_uuid.__u_bits,
1028 in_f32->ilf_u.ilfu_uuid.__u_bits,
1029 sizeof(uuid_t));
1030 in_f->ilf_blkno = in_f32->ilf_blkno;
1031 in_f->ilf_len = in_f32->ilf_len;
1032 in_f->ilf_boffset = in_f32->ilf_boffset;
1033 return 0;
1034 } else if (buf->i_len == sizeof(xfs_inode_log_format_64_t)){
1035 xfs_inode_log_format_64_t *in_f64;
1036
1037 in_f64 = (xfs_inode_log_format_64_t *)buf->i_addr;
1038 in_f->ilf_type = in_f64->ilf_type;
1039 in_f->ilf_size = in_f64->ilf_size;
1040 in_f->ilf_fields = in_f64->ilf_fields;
1041 in_f->ilf_asize = in_f64->ilf_asize;
1042 in_f->ilf_dsize = in_f64->ilf_dsize;
1043 in_f->ilf_ino = in_f64->ilf_ino;
1044 /* copy biggest field of ilf_u */
1045 memcpy(in_f->ilf_u.ilfu_uuid.__u_bits,
1046 in_f64->ilf_u.ilfu_uuid.__u_bits,
1047 sizeof(uuid_t));
1048 in_f->ilf_blkno = in_f64->ilf_blkno;
1049 in_f->ilf_len = in_f64->ilf_len;
1050 in_f->ilf_boffset = in_f64->ilf_boffset;
1051 return 0;
1052 }
1053 return EFSCORRUPTED;
1054}