blob: 46cc40131d4a43c91ec5eb1d188c46e967c5193c [file] [log] [blame]
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"
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include "xfs_sb.h"
Nathan Scotta844f452005-11-02 14:38:42 +110026#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include "xfs_mount.h"
28#include "xfs_trans_priv.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include "xfs_bmap_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include "xfs_dinode.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include "xfs_inode.h"
Nathan Scotta844f452005-11-02 14:38:42 +110032#include "xfs_inode_item.h"
David Chinnerdb7a19f2008-04-10 12:22:24 +100033#include "xfs_error.h"
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000034#include "xfs_trace.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
36
37kmem_zone_t *xfs_ili_zone; /* inode log item zone */
38
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +100039static inline struct xfs_inode_log_item *INODE_ITEM(struct xfs_log_item *lip)
40{
41 return container_of(lip, struct xfs_inode_log_item, ili_item);
42}
43
44
Linus Torvalds1da177e2005-04-16 15:20:36 -070045/*
46 * This returns the number of iovecs needed to log the given inode item.
47 *
48 * We need one iovec for the inode log format structure, one for the
49 * inode core, and possibly one for the inode data/extents/b-tree root
50 * and one for the inode attribute data/extents/b-tree root.
51 */
52STATIC uint
53xfs_inode_item_size(
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +100054 struct xfs_log_item *lip)
Linus Torvalds1da177e2005-04-16 15:20:36 -070055{
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +100056 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
57 struct xfs_inode *ip = iip->ili_inode;
58 uint nvecs = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
60 /*
61 * Only log the data/extents/b-tree root if there is something
62 * left to log.
63 */
64 iip->ili_format.ilf_fields |= XFS_ILOG_CORE;
65
66 switch (ip->i_d.di_format) {
67 case XFS_DINODE_FMT_EXTENTS:
68 iip->ili_format.ilf_fields &=
69 ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
70 XFS_ILOG_DEV | XFS_ILOG_UUID);
71 if ((iip->ili_format.ilf_fields & XFS_ILOG_DEXT) &&
72 (ip->i_d.di_nextents > 0) &&
73 (ip->i_df.if_bytes > 0)) {
74 ASSERT(ip->i_df.if_u1.if_extents != NULL);
75 nvecs++;
76 } else {
77 iip->ili_format.ilf_fields &= ~XFS_ILOG_DEXT;
78 }
79 break;
80
81 case XFS_DINODE_FMT_BTREE:
82 ASSERT(ip->i_df.if_ext_max ==
83 XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
84 iip->ili_format.ilf_fields &=
85 ~(XFS_ILOG_DDATA | XFS_ILOG_DEXT |
86 XFS_ILOG_DEV | XFS_ILOG_UUID);
87 if ((iip->ili_format.ilf_fields & XFS_ILOG_DBROOT) &&
88 (ip->i_df.if_broot_bytes > 0)) {
89 ASSERT(ip->i_df.if_broot != NULL);
90 nvecs++;
91 } else {
92 ASSERT(!(iip->ili_format.ilf_fields &
93 XFS_ILOG_DBROOT));
94#ifdef XFS_TRANS_DEBUG
95 if (iip->ili_root_size > 0) {
96 ASSERT(iip->ili_root_size ==
97 ip->i_df.if_broot_bytes);
98 ASSERT(memcmp(iip->ili_orig_root,
99 ip->i_df.if_broot,
100 iip->ili_root_size) == 0);
101 } else {
102 ASSERT(ip->i_df.if_broot_bytes == 0);
103 }
104#endif
105 iip->ili_format.ilf_fields &= ~XFS_ILOG_DBROOT;
106 }
107 break;
108
109 case XFS_DINODE_FMT_LOCAL:
110 iip->ili_format.ilf_fields &=
111 ~(XFS_ILOG_DEXT | XFS_ILOG_DBROOT |
112 XFS_ILOG_DEV | XFS_ILOG_UUID);
113 if ((iip->ili_format.ilf_fields & XFS_ILOG_DDATA) &&
114 (ip->i_df.if_bytes > 0)) {
115 ASSERT(ip->i_df.if_u1.if_data != NULL);
116 ASSERT(ip->i_d.di_size > 0);
117 nvecs++;
118 } else {
119 iip->ili_format.ilf_fields &= ~XFS_ILOG_DDATA;
120 }
121 break;
122
123 case XFS_DINODE_FMT_DEV:
124 iip->ili_format.ilf_fields &=
125 ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
126 XFS_ILOG_DEXT | XFS_ILOG_UUID);
127 break;
128
129 case XFS_DINODE_FMT_UUID:
130 iip->ili_format.ilf_fields &=
131 ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
132 XFS_ILOG_DEXT | XFS_ILOG_DEV);
133 break;
134
135 default:
136 ASSERT(0);
137 break;
138 }
139
140 /*
141 * If there are no attributes associated with this file,
142 * then there cannot be anything more to log.
143 * Clear all attribute-related log flags.
144 */
145 if (!XFS_IFORK_Q(ip)) {
146 iip->ili_format.ilf_fields &=
147 ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT);
148 return nvecs;
149 }
150
151 /*
152 * Log any necessary attribute data.
153 */
154 switch (ip->i_d.di_aformat) {
155 case XFS_DINODE_FMT_EXTENTS:
156 iip->ili_format.ilf_fields &=
157 ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT);
158 if ((iip->ili_format.ilf_fields & XFS_ILOG_AEXT) &&
159 (ip->i_d.di_anextents > 0) &&
160 (ip->i_afp->if_bytes > 0)) {
161 ASSERT(ip->i_afp->if_u1.if_extents != NULL);
162 nvecs++;
163 } else {
164 iip->ili_format.ilf_fields &= ~XFS_ILOG_AEXT;
165 }
166 break;
167
168 case XFS_DINODE_FMT_BTREE:
169 iip->ili_format.ilf_fields &=
170 ~(XFS_ILOG_ADATA | XFS_ILOG_AEXT);
171 if ((iip->ili_format.ilf_fields & XFS_ILOG_ABROOT) &&
172 (ip->i_afp->if_broot_bytes > 0)) {
173 ASSERT(ip->i_afp->if_broot != NULL);
174 nvecs++;
175 } else {
176 iip->ili_format.ilf_fields &= ~XFS_ILOG_ABROOT;
177 }
178 break;
179
180 case XFS_DINODE_FMT_LOCAL:
181 iip->ili_format.ilf_fields &=
182 ~(XFS_ILOG_AEXT | XFS_ILOG_ABROOT);
183 if ((iip->ili_format.ilf_fields & XFS_ILOG_ADATA) &&
184 (ip->i_afp->if_bytes > 0)) {
185 ASSERT(ip->i_afp->if_u1.if_data != NULL);
186 nvecs++;
187 } else {
188 iip->ili_format.ilf_fields &= ~XFS_ILOG_ADATA;
189 }
190 break;
191
192 default:
193 ASSERT(0);
194 break;
195 }
196
197 return nvecs;
198}
199
200/*
201 * This is called to fill in the vector of log iovecs for the
202 * given inode log item. It fills the first item with an inode
203 * log format structure, the second with the on-disk inode structure,
204 * and a possible third and/or fourth with the inode data/extents/b-tree
205 * root and inode attributes data/extents/b-tree root.
206 */
207STATIC void
208xfs_inode_item_format(
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000209 struct xfs_log_item *lip,
210 struct xfs_log_iovec *vecp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211{
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000212 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
213 struct xfs_inode *ip = iip->ili_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 uint nvecs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215 size_t data_bytes;
216 xfs_bmbt_rec_t *ext_buffer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 xfs_mount_t *mp;
218
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +1000219 vecp->i_addr = &iip->ili_format;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 vecp->i_len = sizeof(xfs_inode_log_format_t);
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000221 vecp->i_type = XLOG_REG_TYPE_IFORMAT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 vecp++;
223 nvecs = 1;
224
225 /*
226 * Clear i_update_core if the timestamps (or any other
227 * non-transactional modification) need flushing/logging
228 * and we're about to log them with the rest of the core.
229 *
230 * This is the same logic as xfs_iflush() but this code can't
231 * run at the same time as xfs_iflush because we're in commit
232 * processing here and so we have the inode lock held in
233 * exclusive mode. Although it doesn't really matter
234 * for the timestamps if both routines were to grab the
235 * timestamps or not. That would be ok.
236 *
237 * We clear i_update_core before copying out the data.
238 * This is for coordination with our timestamp updates
239 * that don't hold the inode lock. They will always
240 * update the timestamps BEFORE setting i_update_core,
241 * so if we clear i_update_core after they set it we
242 * are guaranteed to see their updates to the timestamps
243 * either here. Likewise, if they set it after we clear it
244 * here, we'll see it either on the next commit of this
245 * inode or the next time the inode gets flushed via
246 * xfs_iflush(). This depends on strongly ordered memory
247 * semantics, but we have that. We use the SYNCHRONIZE
248 * macro to make sure that the compiler does not reorder
249 * the i_update_core access below the data copy below.
250 */
251 if (ip->i_update_core) {
252 ip->i_update_core = 0;
253 SYNCHRONIZE();
254 }
255
256 /*
Christoph Hellwigf9581b12009-10-06 20:29:26 +0000257 * Make sure to get the latest timestamps from the Linux inode.
Christoph Hellwig42fe2b12006-01-11 15:35:17 +1100258 */
Christoph Hellwigf9581b12009-10-06 20:29:26 +0000259 xfs_synchronize_times(ip);
David Chinner5d51eff2007-11-23 16:29:18 +1100260
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +1000261 vecp->i_addr = &ip->i_d;
Christoph Hellwig81591fe2008-11-28 14:23:39 +1100262 vecp->i_len = sizeof(struct xfs_icdinode);
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000263 vecp->i_type = XLOG_REG_TYPE_ICORE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 vecp++;
265 nvecs++;
266 iip->ili_format.ilf_fields |= XFS_ILOG_CORE;
267
268 /*
269 * If this is really an old format inode, then we need to
270 * log it as such. This means that we have to copy the link
271 * count from the new field to the old. We don't have to worry
272 * about the new fields, because nothing trusts them as long as
273 * the old inode version number is there. If the superblock already
274 * has a new version number, then we don't bother converting back.
275 */
276 mp = ip->i_mount;
Christoph Hellwig51ce16d2008-11-28 14:23:39 +1100277 ASSERT(ip->i_d.di_version == 1 || xfs_sb_version_hasnlink(&mp->m_sb));
278 if (ip->i_d.di_version == 1) {
Eric Sandeen62118702008-03-06 13:44:28 +1100279 if (!xfs_sb_version_hasnlink(&mp->m_sb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 /*
281 * Convert it back.
282 */
283 ASSERT(ip->i_d.di_nlink <= XFS_MAXLINK_1);
284 ip->i_d.di_onlink = ip->i_d.di_nlink;
285 } else {
286 /*
287 * The superblock version has already been bumped,
288 * so just make the conversion to the new inode
289 * format permanent.
290 */
Christoph Hellwig51ce16d2008-11-28 14:23:39 +1100291 ip->i_d.di_version = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 ip->i_d.di_onlink = 0;
293 memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad));
294 }
295 }
296
297 switch (ip->i_d.di_format) {
298 case XFS_DINODE_FMT_EXTENTS:
299 ASSERT(!(iip->ili_format.ilf_fields &
300 (XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
301 XFS_ILOG_DEV | XFS_ILOG_UUID)));
302 if (iip->ili_format.ilf_fields & XFS_ILOG_DEXT) {
303 ASSERT(ip->i_df.if_bytes > 0);
304 ASSERT(ip->i_df.if_u1.if_extents != NULL);
305 ASSERT(ip->i_d.di_nextents > 0);
306 ASSERT(iip->ili_extents_buf == NULL);
Christoph Hellwig73523a22010-07-20 17:54:45 +1000307 ASSERT((ip->i_df.if_bytes /
308 (uint)sizeof(xfs_bmbt_rec_t)) > 0);
Nathan Scottf016bad2005-09-08 15:30:05 +1000309#ifdef XFS_NATIVE_HOST
Dave Chinner696123f2010-07-26 13:51:46 -0500310 if (ip->i_d.di_nextents == ip->i_df.if_bytes /
311 (uint)sizeof(xfs_bmbt_rec_t)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 /*
313 * There are no delayed allocation
314 * extents, so just point to the
315 * real extents array.
316 */
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +1000317 vecp->i_addr = ip->i_df.if_u1.if_extents;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 vecp->i_len = ip->i_df.if_bytes;
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000319 vecp->i_type = XLOG_REG_TYPE_IEXT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 } else
321#endif
322 {
323 /*
324 * There are delayed allocation extents
325 * in the inode, or we need to convert
326 * the extents to on disk format.
327 * Use xfs_iextents_copy()
328 * to copy only the real extents into
329 * a separate buffer. We'll free the
330 * buffer in the unlock routine.
331 */
332 ext_buffer = kmem_alloc(ip->i_df.if_bytes,
333 KM_SLEEP);
334 iip->ili_extents_buf = ext_buffer;
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +1000335 vecp->i_addr = ext_buffer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 vecp->i_len = xfs_iextents_copy(ip, ext_buffer,
337 XFS_DATA_FORK);
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000338 vecp->i_type = XLOG_REG_TYPE_IEXT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 }
340 ASSERT(vecp->i_len <= ip->i_df.if_bytes);
341 iip->ili_format.ilf_dsize = vecp->i_len;
342 vecp++;
343 nvecs++;
344 }
345 break;
346
347 case XFS_DINODE_FMT_BTREE:
348 ASSERT(!(iip->ili_format.ilf_fields &
349 (XFS_ILOG_DDATA | XFS_ILOG_DEXT |
350 XFS_ILOG_DEV | XFS_ILOG_UUID)));
351 if (iip->ili_format.ilf_fields & XFS_ILOG_DBROOT) {
352 ASSERT(ip->i_df.if_broot_bytes > 0);
353 ASSERT(ip->i_df.if_broot != NULL);
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +1000354 vecp->i_addr = ip->i_df.if_broot;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 vecp->i_len = ip->i_df.if_broot_bytes;
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000356 vecp->i_type = XLOG_REG_TYPE_IBROOT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 vecp++;
358 nvecs++;
359 iip->ili_format.ilf_dsize = ip->i_df.if_broot_bytes;
360 }
361 break;
362
363 case XFS_DINODE_FMT_LOCAL:
364 ASSERT(!(iip->ili_format.ilf_fields &
365 (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
366 XFS_ILOG_DEV | XFS_ILOG_UUID)));
367 if (iip->ili_format.ilf_fields & XFS_ILOG_DDATA) {
368 ASSERT(ip->i_df.if_bytes > 0);
369 ASSERT(ip->i_df.if_u1.if_data != NULL);
370 ASSERT(ip->i_d.di_size > 0);
371
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +1000372 vecp->i_addr = ip->i_df.if_u1.if_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 /*
374 * Round i_bytes up to a word boundary.
375 * The underlying memory is guaranteed to
376 * to be there by xfs_idata_realloc().
377 */
378 data_bytes = roundup(ip->i_df.if_bytes, 4);
379 ASSERT((ip->i_df.if_real_bytes == 0) ||
380 (ip->i_df.if_real_bytes == data_bytes));
381 vecp->i_len = (int)data_bytes;
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000382 vecp->i_type = XLOG_REG_TYPE_ILOCAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 vecp++;
384 nvecs++;
385 iip->ili_format.ilf_dsize = (unsigned)data_bytes;
386 }
387 break;
388
389 case XFS_DINODE_FMT_DEV:
390 ASSERT(!(iip->ili_format.ilf_fields &
391 (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
392 XFS_ILOG_DDATA | XFS_ILOG_UUID)));
393 if (iip->ili_format.ilf_fields & XFS_ILOG_DEV) {
394 iip->ili_format.ilf_u.ilfu_rdev =
395 ip->i_df.if_u2.if_rdev;
396 }
397 break;
398
399 case XFS_DINODE_FMT_UUID:
400 ASSERT(!(iip->ili_format.ilf_fields &
401 (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
402 XFS_ILOG_DDATA | XFS_ILOG_DEV)));
403 if (iip->ili_format.ilf_fields & XFS_ILOG_UUID) {
404 iip->ili_format.ilf_u.ilfu_uuid =
405 ip->i_df.if_u2.if_uuid;
406 }
407 break;
408
409 default:
410 ASSERT(0);
411 break;
412 }
413
414 /*
415 * If there are no attributes associated with the file,
416 * then we're done.
417 * Assert that no attribute-related log flags are set.
418 */
419 if (!XFS_IFORK_Q(ip)) {
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000420 ASSERT(nvecs == lip->li_desc->lid_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 iip->ili_format.ilf_size = nvecs;
422 ASSERT(!(iip->ili_format.ilf_fields &
423 (XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT)));
424 return;
425 }
426
427 switch (ip->i_d.di_aformat) {
428 case XFS_DINODE_FMT_EXTENTS:
429 ASSERT(!(iip->ili_format.ilf_fields &
430 (XFS_ILOG_ADATA | XFS_ILOG_ABROOT)));
431 if (iip->ili_format.ilf_fields & XFS_ILOG_AEXT) {
Christoph Hellwig73523a22010-07-20 17:54:45 +1000432#ifdef DEBUG
433 int nrecs = ip->i_afp->if_bytes /
434 (uint)sizeof(xfs_bmbt_rec_t);
435 ASSERT(nrecs > 0);
436 ASSERT(nrecs == ip->i_d.di_anextents);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 ASSERT(ip->i_afp->if_bytes > 0);
438 ASSERT(ip->i_afp->if_u1.if_extents != NULL);
439 ASSERT(ip->i_d.di_anextents > 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440#endif
Nathan Scottf016bad2005-09-08 15:30:05 +1000441#ifdef XFS_NATIVE_HOST
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 /*
443 * There are not delayed allocation extents
444 * for attributes, so just point at the array.
445 */
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +1000446 vecp->i_addr = ip->i_afp->if_u1.if_extents;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 vecp->i_len = ip->i_afp->if_bytes;
448#else
449 ASSERT(iip->ili_aextents_buf == NULL);
450 /*
451 * Need to endian flip before logging
452 */
453 ext_buffer = kmem_alloc(ip->i_afp->if_bytes,
454 KM_SLEEP);
455 iip->ili_aextents_buf = ext_buffer;
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +1000456 vecp->i_addr = ext_buffer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 vecp->i_len = xfs_iextents_copy(ip, ext_buffer,
458 XFS_ATTR_FORK);
459#endif
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000460 vecp->i_type = XLOG_REG_TYPE_IATTR_EXT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 iip->ili_format.ilf_asize = vecp->i_len;
462 vecp++;
463 nvecs++;
464 }
465 break;
466
467 case XFS_DINODE_FMT_BTREE:
468 ASSERT(!(iip->ili_format.ilf_fields &
469 (XFS_ILOG_ADATA | XFS_ILOG_AEXT)));
470 if (iip->ili_format.ilf_fields & XFS_ILOG_ABROOT) {
471 ASSERT(ip->i_afp->if_broot_bytes > 0);
472 ASSERT(ip->i_afp->if_broot != NULL);
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +1000473 vecp->i_addr = ip->i_afp->if_broot;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 vecp->i_len = ip->i_afp->if_broot_bytes;
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000475 vecp->i_type = XLOG_REG_TYPE_IATTR_BROOT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 vecp++;
477 nvecs++;
478 iip->ili_format.ilf_asize = ip->i_afp->if_broot_bytes;
479 }
480 break;
481
482 case XFS_DINODE_FMT_LOCAL:
483 ASSERT(!(iip->ili_format.ilf_fields &
484 (XFS_ILOG_ABROOT | XFS_ILOG_AEXT)));
485 if (iip->ili_format.ilf_fields & XFS_ILOG_ADATA) {
486 ASSERT(ip->i_afp->if_bytes > 0);
487 ASSERT(ip->i_afp->if_u1.if_data != NULL);
488
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +1000489 vecp->i_addr = ip->i_afp->if_u1.if_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 /*
491 * Round i_bytes up to a word boundary.
492 * The underlying memory is guaranteed to
493 * to be there by xfs_idata_realloc().
494 */
495 data_bytes = roundup(ip->i_afp->if_bytes, 4);
496 ASSERT((ip->i_afp->if_real_bytes == 0) ||
497 (ip->i_afp->if_real_bytes == data_bytes));
498 vecp->i_len = (int)data_bytes;
Christoph Hellwig4139b3b2010-01-19 09:56:45 +0000499 vecp->i_type = XLOG_REG_TYPE_IATTR_LOCAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500 vecp++;
501 nvecs++;
502 iip->ili_format.ilf_asize = (unsigned)data_bytes;
503 }
504 break;
505
506 default:
507 ASSERT(0);
508 break;
509 }
510
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000511 ASSERT(nvecs == lip->li_desc->lid_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 iip->ili_format.ilf_size = nvecs;
513}
514
515
516/*
517 * This is called to pin the inode associated with the inode log
Christoph Hellwiga14a5ab2010-02-18 12:43:22 +0000518 * item in memory so it cannot be written out.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 */
520STATIC void
521xfs_inode_item_pin(
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000522 struct xfs_log_item *lip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523{
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000524 struct xfs_inode *ip = INODE_ITEM(lip)->ili_inode;
Christoph Hellwiga14a5ab2010-02-18 12:43:22 +0000525
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000526 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
527
528 trace_xfs_inode_pin(ip, _RET_IP_);
529 atomic_inc(&ip->i_pincount);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530}
531
532
533/*
534 * This is called to unpin the inode associated with the inode log
535 * item which was previously pinned with a call to xfs_inode_item_pin().
Christoph Hellwiga14a5ab2010-02-18 12:43:22 +0000536 *
537 * Also wake up anyone in xfs_iunpin_wait() if the count goes to 0.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539STATIC void
540xfs_inode_item_unpin(
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000541 struct xfs_log_item *lip,
Christoph Hellwig9412e312010-06-23 18:11:15 +1000542 int remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543{
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000544 struct xfs_inode *ip = INODE_ITEM(lip)->ili_inode;
Christoph Hellwiga14a5ab2010-02-18 12:43:22 +0000545
Dave Chinner4aaf15d2010-03-08 11:24:07 +1100546 trace_xfs_inode_unpin(ip, _RET_IP_);
Christoph Hellwiga14a5ab2010-02-18 12:43:22 +0000547 ASSERT(atomic_read(&ip->i_pincount) > 0);
548 if (atomic_dec_and_test(&ip->i_pincount))
549 wake_up(&ip->i_ipin_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550}
551
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552/*
553 * This is called to attempt to lock the inode associated with this
554 * inode log item, in preparation for the push routine which does the actual
555 * iflush. Don't sleep on the inode lock or the flush lock.
556 *
557 * If the flush lock is already held, indicating that the inode has
558 * been or is in the process of being flushed, then (ideally) we'd like to
559 * see if the inode's buffer is still incore, and if so give it a nudge.
560 * We delay doing so until the pushbuf routine, though, to avoid holding
Nathan Scottc41564b2006-03-29 08:55:14 +1000561 * the AIL lock across a call to the blackhole which is the buffer cache.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562 * Also we don't want to sleep in any device strategy routines, which can happen
563 * if we do the subsequent bawrite in here.
564 */
565STATIC uint
566xfs_inode_item_trylock(
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000567 struct xfs_log_item *lip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568{
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000569 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
570 struct xfs_inode *ip = iip->ili_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000572 if (xfs_ipincount(ip) > 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 return XFS_ITEM_PINNED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000575 if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 return XFS_ITEM_LOCKED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577
578 if (!xfs_iflock_nowait(ip)) {
579 /*
Dave Chinnerd808f612010-02-02 10:13:42 +1100580 * inode has already been flushed to the backing buffer,
581 * leave it locked in shared mode, pushbuf routine will
582 * unlock it.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 */
Dave Chinnerd808f612010-02-02 10:13:42 +1100584 return XFS_ITEM_PUSHBUF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 }
586
587 /* Stale items should force out the iclog */
588 if (ip->i_flags & XFS_ISTALE) {
589 xfs_ifunlock(ip);
Dave Chinnerd808f612010-02-02 10:13:42 +1100590 /*
591 * we hold the AIL lock - notify the unlock routine of this
592 * so it doesn't try to get the lock again.
593 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594 xfs_iunlock(ip, XFS_ILOCK_SHARED|XFS_IUNLOCK_NONOTIFY);
595 return XFS_ITEM_PINNED;
596 }
597
598#ifdef DEBUG
599 if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) {
600 ASSERT(iip->ili_format.ilf_fields != 0);
601 ASSERT(iip->ili_logged == 0);
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000602 ASSERT(lip->li_flags & XFS_LI_IN_AIL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 }
604#endif
605 return XFS_ITEM_SUCCESS;
606}
607
608/*
609 * Unlock the inode associated with the inode log item.
610 * Clear the fields of the inode and inode log item that
611 * are specific to the current transaction. If the
612 * hold flags is set, do not unlock the inode.
613 */
614STATIC void
615xfs_inode_item_unlock(
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000616 struct xfs_log_item *lip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617{
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000618 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
619 struct xfs_inode *ip = iip->ili_inode;
Christoph Hellwig898621d2010-06-24 11:36:58 +1000620 unsigned short lock_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 ASSERT(iip->ili_inode->i_itemp != NULL);
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000623 ASSERT(xfs_isilocked(iip->ili_inode, XFS_ILOCK_EXCL));
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000624
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 /*
626 * Clear the transaction pointer in the inode.
627 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628 ip->i_transp = NULL;
629
630 /*
631 * If the inode needed a separate buffer with which to log
632 * its extents, then free it now.
633 */
634 if (iip->ili_extents_buf != NULL) {
635 ASSERT(ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS);
636 ASSERT(ip->i_d.di_nextents > 0);
637 ASSERT(iip->ili_format.ilf_fields & XFS_ILOG_DEXT);
638 ASSERT(ip->i_df.if_bytes > 0);
Denys Vlasenkof0e2d932008-05-19 16:31:57 +1000639 kmem_free(iip->ili_extents_buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 iip->ili_extents_buf = NULL;
641 }
642 if (iip->ili_aextents_buf != NULL) {
643 ASSERT(ip->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS);
644 ASSERT(ip->i_d.di_anextents > 0);
645 ASSERT(iip->ili_format.ilf_fields & XFS_ILOG_AEXT);
646 ASSERT(ip->i_afp->if_bytes > 0);
Denys Vlasenkof0e2d932008-05-19 16:31:57 +1000647 kmem_free(iip->ili_aextents_buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 iip->ili_aextents_buf = NULL;
649 }
650
Christoph Hellwig898621d2010-06-24 11:36:58 +1000651 lock_flags = iip->ili_lock_flags;
652 iip->ili_lock_flags = 0;
Christoph Hellwigf2d67612010-06-24 11:52:50 +1000653 if (lock_flags) {
654 xfs_iunlock(iip->ili_inode, lock_flags);
655 IRELE(iip->ili_inode);
656 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657}
658
659/*
Dave Chinnerde25c182010-11-30 15:15:46 +1100660 * This is called to find out where the oldest active copy of the inode log
661 * item in the on disk log resides now that the last log write of it completed
662 * at the given lsn. Since we always re-log all dirty data in an inode, the
663 * latest copy in the on disk log is the only one that matters. Therefore,
664 * simply return the given lsn.
665 *
666 * If the inode has been marked stale because the cluster is being freed, we
667 * don't want to (re-)insert this inode into the AIL. There is a race condition
668 * where the cluster buffer may be unpinned before the inode is inserted into
669 * the AIL during transaction committed processing. If the buffer is unpinned
670 * before the inode item has been committed and inserted, then it is possible
671 * for the buffer to be written and IO completions before the inode is inserted
672 * into the AIL. In that case, we'd be inserting a clean, stale inode into the
673 * AIL which will never get removed. It will, however, get reclaimed which
674 * triggers an assert in xfs_inode_free() complaining about freein an inode
675 * still in the AIL.
676 *
677 * To avoid this, return a lower LSN than the one passed in so that the
678 * transaction committed code will not move the inode forward in the AIL but
679 * will still unpin it properly.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681STATIC xfs_lsn_t
682xfs_inode_item_committed(
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000683 struct xfs_log_item *lip,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684 xfs_lsn_t lsn)
685{
Dave Chinnerde25c182010-11-30 15:15:46 +1100686 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
687 struct xfs_inode *ip = iip->ili_inode;
688
689 if (xfs_iflags_test(ip, XFS_ISTALE))
690 return lsn - 1;
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000691 return lsn;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692}
693
694/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695 * This gets called by xfs_trans_push_ail(), when IOP_TRYLOCK
696 * failed to get the inode flush lock but did get the inode locked SHARED.
697 * 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 +1100698 * marked delayed write. If that's the case, we'll promote it and that will
699 * allow the caller to write the buffer by triggering the xfsbufd to run.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 */
701STATIC void
702xfs_inode_item_pushbuf(
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000703 struct xfs_log_item *lip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704{
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000705 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
706 struct xfs_inode *ip = iip->ili_inode;
707 struct xfs_buf *bp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000709 ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710
711 /*
David Chinnerc63942d2008-08-13 16:41:16 +1000712 * If a flush is not in progress anymore, chances are that the
713 * inode was taken off the AIL. So, just get out.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 */
David Chinnerc63942d2008-08-13 16:41:16 +1000715 if (completion_done(&ip->i_flush) ||
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000716 !(lip->li_flags & XFS_LI_IN_AIL)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 xfs_iunlock(ip, XFS_ILOCK_SHARED);
718 return;
719 }
720
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000721 bp = xfs_incore(ip->i_mount->m_ddev_targp, iip->ili_format.ilf_blkno,
722 iip->ili_format.ilf_len, XBF_TRYLOCK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724 xfs_iunlock(ip, XFS_ILOCK_SHARED);
Dave Chinnerd808f612010-02-02 10:13:42 +1100725 if (!bp)
726 return;
727 if (XFS_BUF_ISDELAYWRITE(bp))
728 xfs_buf_delwri_promote(bp);
729 xfs_buf_relse(bp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730}
731
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732/*
733 * This is called to asynchronously write the inode associated with this
734 * inode log item out to disk. The inode will already have been locked by
735 * a successful call to xfs_inode_item_trylock().
736 */
737STATIC void
738xfs_inode_item_push(
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000739 struct xfs_log_item *lip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740{
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000741 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
742 struct xfs_inode *ip = iip->ili_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000744 ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED));
David Chinnerc63942d2008-08-13 16:41:16 +1000745 ASSERT(!completion_done(&ip->i_flush));
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000746
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 /*
748 * Since we were able to lock the inode's flush lock and
749 * we found it on the AIL, the inode must be dirty. This
750 * is because the inode is removed from the AIL while still
751 * holding the flush lock in xfs_iflush_done(). Thus, if
752 * we found it in the AIL and were able to obtain the flush
753 * lock without sleeping, then there must not have been
754 * anyone in the process of flushing the inode.
755 */
756 ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) ||
757 iip->ili_format.ilf_fields != 0);
758
759 /*
Dave Chinnerc8543632010-02-06 12:39:36 +1100760 * Push the inode to it's backing buffer. This will not remove the
761 * inode from the AIL - a further push will be required to trigger a
762 * buffer push. However, this allows all the dirty inodes to be pushed
Dave Chinner1bfd8d02011-03-26 09:13:55 +1100763 * to the buffer before it is pushed to disk. The buffer IO completion
764 * will pull the inode from the AIL, mark it clean and unlock the flush
Dave Chinnerc8543632010-02-06 12:39:36 +1100765 * lock.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766 */
Dave Chinner1bfd8d02011-03-26 09:13:55 +1100767 (void) xfs_iflush(ip, SYNC_TRYLOCK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 xfs_iunlock(ip, XFS_ILOCK_SHARED);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769}
770
771/*
772 * XXX rcc - this one really has to do something. Probably needs
773 * to stamp in a new field in the incore inode.
774 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775STATIC void
776xfs_inode_item_committing(
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000777 struct xfs_log_item *lip,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778 xfs_lsn_t lsn)
779{
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000780 INODE_ITEM(lip)->ili_last_lsn = lsn;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781}
782
783/*
784 * This is the ops vector shared by all buf log items.
785 */
David Chinner7989cb82007-02-10 18:34:56 +1100786static struct xfs_item_ops xfs_inode_item_ops = {
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000787 .iop_size = xfs_inode_item_size,
788 .iop_format = xfs_inode_item_format,
789 .iop_pin = xfs_inode_item_pin,
790 .iop_unpin = xfs_inode_item_unpin,
791 .iop_trylock = xfs_inode_item_trylock,
792 .iop_unlock = xfs_inode_item_unlock,
793 .iop_committed = xfs_inode_item_committed,
794 .iop_push = xfs_inode_item_push,
795 .iop_pushbuf = xfs_inode_item_pushbuf,
796 .iop_committing = xfs_inode_item_committing
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797};
798
799
800/*
801 * Initialize the inode log item for a newly allocated (in-core) inode.
802 */
803void
804xfs_inode_item_init(
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000805 struct xfs_inode *ip,
806 struct xfs_mount *mp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807{
Christoph Hellwig7bfa31d2010-06-23 18:11:15 +1000808 struct xfs_inode_log_item *iip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809
810 ASSERT(ip->i_itemp == NULL);
811 iip = ip->i_itemp = kmem_zone_zalloc(xfs_ili_zone, KM_SLEEP);
812
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813 iip->ili_inode = ip;
Dave Chinner43f5efc2010-03-23 10:10:00 +1100814 xfs_log_item_init(mp, &iip->ili_item, XFS_LI_INODE,
815 &xfs_inode_item_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816 iip->ili_format.ilf_type = XFS_LI_INODE;
817 iip->ili_format.ilf_ino = ip->i_ino;
Christoph Hellwig92bfc6e2008-11-28 14:23:41 +1100818 iip->ili_format.ilf_blkno = ip->i_imap.im_blkno;
819 iip->ili_format.ilf_len = ip->i_imap.im_len;
820 iip->ili_format.ilf_boffset = ip->i_imap.im_boffset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821}
822
823/*
824 * Free the inode log item and any memory hanging off of it.
825 */
826void
827xfs_inode_item_destroy(
828 xfs_inode_t *ip)
829{
830#ifdef XFS_TRANS_DEBUG
831 if (ip->i_itemp->ili_root_size != 0) {
Denys Vlasenkof0e2d932008-05-19 16:31:57 +1000832 kmem_free(ip->i_itemp->ili_orig_root);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833 }
834#endif
835 kmem_zone_free(xfs_ili_zone, ip->i_itemp);
836}
837
838
839/*
840 * This is the inode flushing I/O completion routine. It is called
841 * from interrupt level when the buffer containing the inode is
842 * flushed to disk. It is responsible for removing the inode item
843 * from the AIL if it has not been re-logged, and unlocking the inode's
844 * flush lock.
Dave Chinner30136832010-12-20 12:03:17 +1100845 *
846 * To reduce AIL lock traffic as much as possible, we scan the buffer log item
847 * list for other inodes that will run this function. We remove them from the
848 * buffer list so we can process all the inode IO completions in one AIL lock
849 * traversal.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851void
852xfs_iflush_done(
Christoph Hellwigca30b2a2010-06-23 18:11:15 +1000853 struct xfs_buf *bp,
854 struct xfs_log_item *lip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855{
Dave Chinner30136832010-12-20 12:03:17 +1100856 struct xfs_inode_log_item *iip;
857 struct xfs_log_item *blip;
858 struct xfs_log_item *next;
859 struct xfs_log_item *prev;
Christoph Hellwigca30b2a2010-06-23 18:11:15 +1000860 struct xfs_ail *ailp = lip->li_ailp;
Dave Chinner30136832010-12-20 12:03:17 +1100861 int need_ail = 0;
862
863 /*
864 * Scan the buffer IO completions for other inodes being completed and
865 * attach them to the current inode log item.
866 */
867 blip = XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *);
868 prev = NULL;
869 while (blip != NULL) {
870 if (lip->li_cb != xfs_iflush_done) {
871 prev = blip;
872 blip = blip->li_bio_list;
873 continue;
874 }
875
876 /* remove from list */
877 next = blip->li_bio_list;
878 if (!prev) {
879 XFS_BUF_SET_FSPRIVATE(bp, next);
880 } else {
881 prev->li_bio_list = next;
882 }
883
884 /* add to current list */
885 blip->li_bio_list = lip->li_bio_list;
886 lip->li_bio_list = blip;
887
888 /*
889 * while we have the item, do the unlocked check for needing
890 * the AIL lock.
891 */
892 iip = INODE_ITEM(blip);
893 if (iip->ili_logged && blip->li_lsn == iip->ili_flush_lsn)
894 need_ail++;
895
896 blip = next;
897 }
898
899 /* make sure we capture the state of the initial inode. */
900 iip = INODE_ITEM(lip);
901 if (iip->ili_logged && lip->li_lsn == iip->ili_flush_lsn)
902 need_ail++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903
904 /*
905 * We only want to pull the item from the AIL if it is
906 * actually there and its location in the log has not
907 * changed since we started the flush. Thus, we only bother
908 * if the ili_logged flag is set and the inode's lsn has not
909 * changed. First we check the lsn outside
910 * the lock since it's cheaper, and then we recheck while
911 * holding the lock before removing the inode from the AIL.
912 */
Dave Chinner30136832010-12-20 12:03:17 +1100913 if (need_ail) {
914 struct xfs_log_item *log_items[need_ail];
915 int i = 0;
David Chinner783a2f62008-10-30 17:39:58 +1100916 spin_lock(&ailp->xa_lock);
Dave Chinner30136832010-12-20 12:03:17 +1100917 for (blip = lip; blip; blip = blip->li_bio_list) {
918 iip = INODE_ITEM(blip);
919 if (iip->ili_logged &&
920 blip->li_lsn == iip->ili_flush_lsn) {
921 log_items[i++] = blip;
922 }
923 ASSERT(i <= need_ail);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924 }
Dave Chinner30136832010-12-20 12:03:17 +1100925 /* xfs_trans_ail_delete_bulk() drops the AIL lock. */
926 xfs_trans_ail_delete_bulk(ailp, log_items, i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927 }
928
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929
930 /*
Dave Chinner30136832010-12-20 12:03:17 +1100931 * clean up and unlock the flush lock now we are done. We can clear the
932 * ili_last_fields bits now that we know that the data corresponding to
933 * them is safely on disk.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934 */
Dave Chinner30136832010-12-20 12:03:17 +1100935 for (blip = lip; blip; blip = next) {
936 next = blip->li_bio_list;
937 blip->li_bio_list = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938
Dave Chinner30136832010-12-20 12:03:17 +1100939 iip = INODE_ITEM(blip);
940 iip->ili_logged = 0;
941 iip->ili_last_fields = 0;
942 xfs_ifunlock(iip->ili_inode);
943 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944}
945
946/*
947 * This is the inode flushing abort routine. It is called
948 * from xfs_iflush when the filesystem is shutting down to clean
949 * up the inode state.
950 * It is responsible for removing the inode item
951 * from the AIL if it has not been re-logged, and unlocking the inode's
952 * flush lock.
953 */
954void
955xfs_iflush_abort(
956 xfs_inode_t *ip)
957{
David Chinner783a2f62008-10-30 17:39:58 +1100958 xfs_inode_log_item_t *iip = ip->i_itemp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959
960 iip = ip->i_itemp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961 if (iip) {
David Chinner783a2f62008-10-30 17:39:58 +1100962 struct xfs_ail *ailp = iip->ili_item.li_ailp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963 if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
David Chinner783a2f62008-10-30 17:39:58 +1100964 spin_lock(&ailp->xa_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700965 if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
David Chinner783a2f62008-10-30 17:39:58 +1100966 /* xfs_trans_ail_delete() drops the AIL lock. */
967 xfs_trans_ail_delete(ailp, (xfs_log_item_t *)iip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968 } else
David Chinner783a2f62008-10-30 17:39:58 +1100969 spin_unlock(&ailp->xa_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970 }
971 iip->ili_logged = 0;
972 /*
973 * Clear the ili_last_fields bits now that we know that the
974 * data corresponding to them is safely on disk.
975 */
976 iip->ili_last_fields = 0;
977 /*
978 * Clear the inode logging fields so no more flushes are
979 * attempted.
980 */
981 iip->ili_format.ilf_fields = 0;
982 }
983 /*
984 * Release the inode's flush lock since we're done with it.
985 */
986 xfs_ifunlock(ip);
987}
988
989void
990xfs_istale_done(
Christoph Hellwigca30b2a2010-06-23 18:11:15 +1000991 struct xfs_buf *bp,
992 struct xfs_log_item *lip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993{
Christoph Hellwigca30b2a2010-06-23 18:11:15 +1000994 xfs_iflush_abort(INODE_ITEM(lip)->ili_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995}
Tim Shimmin6d192a92006-06-09 14:55:38 +1000996
997/*
998 * convert an xfs_inode_log_format struct from either 32 or 64 bit versions
999 * (which can have different field alignments) to the native version
1000 */
1001int
1002xfs_inode_item_format_convert(
1003 xfs_log_iovec_t *buf,
1004 xfs_inode_log_format_t *in_f)
1005{
1006 if (buf->i_len == sizeof(xfs_inode_log_format_32_t)) {
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +10001007 xfs_inode_log_format_32_t *in_f32 = buf->i_addr;
Tim Shimmin6d192a92006-06-09 14:55:38 +10001008
Tim Shimmin6d192a92006-06-09 14:55:38 +10001009 in_f->ilf_type = in_f32->ilf_type;
1010 in_f->ilf_size = in_f32->ilf_size;
1011 in_f->ilf_fields = in_f32->ilf_fields;
1012 in_f->ilf_asize = in_f32->ilf_asize;
1013 in_f->ilf_dsize = in_f32->ilf_dsize;
1014 in_f->ilf_ino = in_f32->ilf_ino;
1015 /* copy biggest field of ilf_u */
1016 memcpy(in_f->ilf_u.ilfu_uuid.__u_bits,
1017 in_f32->ilf_u.ilfu_uuid.__u_bits,
1018 sizeof(uuid_t));
1019 in_f->ilf_blkno = in_f32->ilf_blkno;
1020 in_f->ilf_len = in_f32->ilf_len;
1021 in_f->ilf_boffset = in_f32->ilf_boffset;
1022 return 0;
1023 } else if (buf->i_len == sizeof(xfs_inode_log_format_64_t)){
Christoph Hellwig4e0d5f92010-06-23 18:11:15 +10001024 xfs_inode_log_format_64_t *in_f64 = buf->i_addr;
Tim Shimmin6d192a92006-06-09 14:55:38 +10001025
Tim Shimmin6d192a92006-06-09 14:55:38 +10001026 in_f->ilf_type = in_f64->ilf_type;
1027 in_f->ilf_size = in_f64->ilf_size;
1028 in_f->ilf_fields = in_f64->ilf_fields;
1029 in_f->ilf_asize = in_f64->ilf_asize;
1030 in_f->ilf_dsize = in_f64->ilf_dsize;
1031 in_f->ilf_ino = in_f64->ilf_ino;
1032 /* copy biggest field of ilf_u */
1033 memcpy(in_f->ilf_u.ilfu_uuid.__u_bits,
1034 in_f64->ilf_u.ilfu_uuid.__u_bits,
1035 sizeof(uuid_t));
1036 in_f->ilf_blkno = in_f64->ilf_blkno;
1037 in_f->ilf_len = in_f64->ilf_len;
1038 in_f->ilf_boffset = in_f64->ilf_boffset;
1039 return 0;
1040 }
1041 return EFSCORRUPTED;
1042}