blob: 137e2b9e2948ae29c41eb07867c5ea813f19bdea [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"
26#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include "xfs_mount.h"
Nathan Scotta844f452005-11-02 14:38:42 +110028#include "xfs_bmap_btree.h"
29#include "xfs_alloc_btree.h"
30#include "xfs_ialloc_btree.h"
Nathan Scotta844f452005-11-02 14:38:42 +110031#include "xfs_dinode.h"
32#include "xfs_inode.h"
33#include "xfs_buf_item.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070034#include "xfs_trans_priv.h"
35#include "xfs_error.h"
36#include "xfs_rw.h"
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000037#include "xfs_trace.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
Christoph Hellwig4a5224d2010-04-18 00:10:45 +000039/*
40 * Check to see if a buffer matching the given parameters is already
41 * a part of the given transaction.
42 */
43STATIC struct xfs_buf *
44xfs_trans_buf_item_match(
45 struct xfs_trans *tp,
46 struct xfs_buftarg *target,
47 xfs_daddr_t blkno,
48 int len)
49{
Christoph Hellwige98c4142010-06-23 18:11:15 +100050 struct xfs_log_item_desc *lidp;
51 struct xfs_buf_log_item *blip;
Linus Torvalds1da177e2005-04-16 15:20:36 -070052
Christoph Hellwig4a5224d2010-04-18 00:10:45 +000053 len = BBTOB(len);
Christoph Hellwige98c4142010-06-23 18:11:15 +100054 list_for_each_entry(lidp, &tp->t_items, lid_trans) {
55 blip = (struct xfs_buf_log_item *)lidp->lid_item;
56 if (blip->bli_item.li_type == XFS_LI_BUF &&
Chandra Seetharaman49074c02011-07-22 23:40:40 +000057 blip->bli_buf->b_target == target &&
Christoph Hellwige98c4142010-06-23 18:11:15 +100058 XFS_BUF_ADDR(blip->bli_buf) == blkno &&
59 XFS_BUF_COUNT(blip->bli_buf) == len)
60 return blip->bli_buf;
Christoph Hellwig4a5224d2010-04-18 00:10:45 +000061 }
62
63 return NULL;
64}
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Christoph Hellwigd7e84f42010-02-15 23:35:09 +000066/*
67 * Add the locked buffer to the transaction.
68 *
69 * The buffer must be locked, and it cannot be associated with any
70 * transaction.
71 *
72 * If the buffer does not yet have a buf log item associated with it,
73 * then allocate one for it. Then add the buf item to the transaction.
74 */
75STATIC void
76_xfs_trans_bjoin(
77 struct xfs_trans *tp,
78 struct xfs_buf *bp,
79 int reset_recur)
80{
81 struct xfs_buf_log_item *bip;
82
Christoph Hellwigbf9d9012011-07-13 13:43:49 +020083 ASSERT(bp->b_transp == NULL);
Christoph Hellwigd7e84f42010-02-15 23:35:09 +000084
85 /*
86 * The xfs_buf_log_item pointer is stored in b_fsprivate. If
87 * it doesn't have one yet, then allocate one and initialize it.
88 * The checks to see if one is there are in xfs_buf_item_init().
89 */
90 xfs_buf_item_init(bp, tp->t_mountp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +020091 bip = bp->b_fspriv;
Christoph Hellwigd7e84f42010-02-15 23:35:09 +000092 ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
Dave Chinnerc1155412010-05-07 11:05:19 +100093 ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL));
Christoph Hellwigd7e84f42010-02-15 23:35:09 +000094 ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED));
95 if (reset_recur)
96 bip->bli_recur = 0;
97
98 /*
99 * Take a reference for this transaction on the buf item.
100 */
101 atomic_inc(&bip->bli_refcount);
102
103 /*
104 * Get a log_item_desc to point at the new item.
105 */
Christoph Hellwige98c4142010-06-23 18:11:15 +1000106 xfs_trans_add_item(tp, &bip->bli_item);
Christoph Hellwigd7e84f42010-02-15 23:35:09 +0000107
108 /*
109 * Initialize b_fsprivate2 so we can find it with incore_match()
110 * in xfs_trans_get_buf() and friends above.
111 */
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200112 bp->b_transp = tp;
Christoph Hellwigd7e84f42010-02-15 23:35:09 +0000113
114}
115
116void
117xfs_trans_bjoin(
118 struct xfs_trans *tp,
119 struct xfs_buf *bp)
120{
121 _xfs_trans_bjoin(tp, bp, 0);
122 trace_xfs_trans_bjoin(bp->b_fspriv);
123}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124
125/*
126 * Get and lock the buffer for the caller if it is not already
127 * locked within the given transaction. If it is already locked
128 * within the transaction, just increment its lock recursion count
129 * and return a pointer to it.
130 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 * If the transaction pointer is NULL, make this just a normal
132 * get_buf() call.
133 */
134xfs_buf_t *
135xfs_trans_get_buf(xfs_trans_t *tp,
136 xfs_buftarg_t *target_dev,
137 xfs_daddr_t blkno,
138 int len,
139 uint flags)
140{
141 xfs_buf_t *bp;
142 xfs_buf_log_item_t *bip;
143
144 if (flags == 0)
Christoph Hellwig0cadda12010-01-19 09:56:44 +0000145 flags = XBF_LOCK | XBF_MAPPED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146
147 /*
148 * Default to a normal get_buf() call if the tp is NULL.
149 */
Christoph Hellwig6ad112b2009-11-24 18:02:23 +0000150 if (tp == NULL)
Christoph Hellwig0cadda12010-01-19 09:56:44 +0000151 return xfs_buf_get(target_dev, blkno, len,
152 flags | XBF_DONT_BLOCK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153
154 /*
155 * If we find the buffer in the cache with this transaction
156 * pointer in its b_fsprivate2 field, then we know we already
157 * have it locked. In this case we just increment the lock
158 * recursion count and return the buffer to the caller.
159 */
Christoph Hellwig4a5224d2010-04-18 00:10:45 +0000160 bp = xfs_trans_buf_item_match(tp, target_dev, blkno, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 if (bp != NULL) {
Christoph Hellwig0c842ad2011-07-08 14:36:19 +0200162 ASSERT(xfs_buf_islocked(bp));
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000163 if (XFS_FORCED_SHUTDOWN(tp->t_mountp))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 XFS_BUF_SUPER_STALE(bp);
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000165
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 /*
167 * If the buffer is stale then it was binval'ed
168 * since last read. This doesn't matter since the
169 * caller isn't allowed to use the data anyway.
170 */
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000171 else if (XFS_BUF_ISSTALE(bp))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 ASSERT(!XFS_BUF_ISDELAYWRITE(bp));
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000173
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200174 ASSERT(bp->b_transp == tp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200175 bip = bp->b_fspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 ASSERT(bip != NULL);
177 ASSERT(atomic_read(&bip->bli_refcount) > 0);
178 bip->bli_recur++;
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000179 trace_xfs_trans_get_buf_recur(bip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 return (bp);
181 }
182
183 /*
Christoph Hellwig0cadda12010-01-19 09:56:44 +0000184 * We always specify the XBF_DONT_BLOCK flag within a transaction
185 * so that get_buf does not try to push out a delayed write buffer
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 * which might cause another transaction to take place (if the
187 * buffer was delayed alloc). Such recursive transactions can
188 * easily deadlock with our current transaction as well as cause
189 * us to run out of stack space.
190 */
Christoph Hellwig0cadda12010-01-19 09:56:44 +0000191 bp = xfs_buf_get(target_dev, blkno, len, flags | XBF_DONT_BLOCK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 if (bp == NULL) {
193 return NULL;
194 }
195
Chandra Seetharaman5a52c2a582011-07-22 23:39:51 +0000196 ASSERT(!bp->b_error);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197
Christoph Hellwigd7e84f42010-02-15 23:35:09 +0000198 _xfs_trans_bjoin(tp, bp, 1);
199 trace_xfs_trans_get_buf(bp->b_fspriv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 return (bp);
201}
202
203/*
204 * Get and lock the superblock buffer of this file system for the
205 * given transaction.
206 *
207 * We don't need to use incore_match() here, because the superblock
208 * buffer is a private buffer which we keep a pointer to in the
209 * mount structure.
210 */
211xfs_buf_t *
212xfs_trans_getsb(xfs_trans_t *tp,
213 struct xfs_mount *mp,
214 int flags)
215{
216 xfs_buf_t *bp;
217 xfs_buf_log_item_t *bip;
218
219 /*
220 * Default to just trying to lock the superblock buffer
221 * if tp is NULL.
222 */
223 if (tp == NULL) {
224 return (xfs_getsb(mp, flags));
225 }
226
227 /*
228 * If the superblock buffer already has this transaction
229 * pointer in its b_fsprivate2 field, then we know we already
230 * have it locked. In this case we just increment the lock
231 * recursion count and return the buffer to the caller.
232 */
233 bp = mp->m_sb_bp;
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200234 if (bp->b_transp == tp) {
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200235 bip = bp->b_fspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 ASSERT(bip != NULL);
237 ASSERT(atomic_read(&bip->bli_refcount) > 0);
238 bip->bli_recur++;
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000239 trace_xfs_trans_getsb_recur(bip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 return (bp);
241 }
242
243 bp = xfs_getsb(mp, flags);
Christoph Hellwigd7e84f42010-02-15 23:35:09 +0000244 if (bp == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246
Christoph Hellwigd7e84f42010-02-15 23:35:09 +0000247 _xfs_trans_bjoin(tp, bp, 1);
248 trace_xfs_trans_getsb(bp->b_fspriv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 return (bp);
250}
251
252#ifdef DEBUG
253xfs_buftarg_t *xfs_error_target;
254int xfs_do_error;
255int xfs_req_num;
256int xfs_error_mod = 33;
257#endif
258
259/*
260 * Get and lock the buffer for the caller if it is not already
261 * locked within the given transaction. If it has not yet been
262 * read in, read it from disk. If it is already locked
263 * within the transaction and already read in, just increment its
264 * lock recursion count and return a pointer to it.
265 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 * If the transaction pointer is NULL, make this just a normal
267 * read_buf() call.
268 */
269int
270xfs_trans_read_buf(
271 xfs_mount_t *mp,
272 xfs_trans_t *tp,
273 xfs_buftarg_t *target,
274 xfs_daddr_t blkno,
275 int len,
276 uint flags,
277 xfs_buf_t **bpp)
278{
279 xfs_buf_t *bp;
280 xfs_buf_log_item_t *bip;
281 int error;
282
283 if (flags == 0)
Christoph Hellwig0cadda12010-01-19 09:56:44 +0000284 flags = XBF_LOCK | XBF_MAPPED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285
286 /*
287 * Default to a normal get_buf() call if the tp is NULL.
288 */
289 if (tp == NULL) {
Christoph Hellwig0cadda12010-01-19 09:56:44 +0000290 bp = xfs_buf_read(target, blkno, len, flags | XBF_DONT_BLOCK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 if (!bp)
Christoph Hellwig0cadda12010-01-19 09:56:44 +0000292 return (flags & XBF_TRYLOCK) ?
David Chinnera3f74ff2008-03-06 13:43:42 +1100293 EAGAIN : XFS_ERROR(ENOMEM);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294
Chandra Seetharaman5a52c2a582011-07-22 23:39:51 +0000295 if (bp->b_error) {
296 error = bp->b_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 xfs_ioerror_alert("xfs_trans_read_buf", mp,
298 bp, blkno);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 xfs_buf_relse(bp);
300 return error;
301 }
302#ifdef DEBUG
Julia Lawalla0f7bfd2009-07-27 18:15:25 +0200303 if (xfs_do_error) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 if (xfs_error_target == target) {
305 if (((xfs_req_num++) % xfs_error_mod) == 0) {
306 xfs_buf_relse(bp);
Dave Chinner0b932cc2011-03-07 10:08:35 +1100307 xfs_debug(mp, "Returning error!");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 return XFS_ERROR(EIO);
309 }
310 }
311 }
312#endif
313 if (XFS_FORCED_SHUTDOWN(mp))
314 goto shutdown_abort;
315 *bpp = bp;
316 return 0;
317 }
318
319 /*
320 * If we find the buffer in the cache with this transaction
321 * pointer in its b_fsprivate2 field, then we know we already
322 * have it locked. If it is already read in we just increment
323 * the lock recursion count and return the buffer to the caller.
324 * If the buffer is not yet read in, then we read it in, increment
325 * the lock recursion count, and return it to the caller.
326 */
Christoph Hellwig4a5224d2010-04-18 00:10:45 +0000327 bp = xfs_trans_buf_item_match(tp, target, blkno, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 if (bp != NULL) {
Christoph Hellwig0c842ad2011-07-08 14:36:19 +0200329 ASSERT(xfs_buf_islocked(bp));
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200330 ASSERT(bp->b_transp == tp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200331 ASSERT(bp->b_fspriv != NULL);
Chandra Seetharaman5a52c2a582011-07-22 23:39:51 +0000332 ASSERT(!bp->b_error);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 if (!(XFS_BUF_ISDONE(bp))) {
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000334 trace_xfs_trans_read_buf_io(bp, _RET_IP_);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335 ASSERT(!XFS_BUF_ISASYNC(bp));
336 XFS_BUF_READ(bp);
337 xfsbdstrat(tp->t_mountp, bp);
Christoph Hellwig1a1a3e92010-10-06 18:41:18 +0000338 error = xfs_buf_iowait(bp);
David Chinnerd64e31a2008-04-10 12:22:17 +1000339 if (error) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 xfs_ioerror_alert("xfs_trans_read_buf", mp,
341 bp, blkno);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342 xfs_buf_relse(bp);
343 /*
David Chinnerd64e31a2008-04-10 12:22:17 +1000344 * We can gracefully recover from most read
345 * errors. Ones we can't are those that happen
346 * after the transaction's already dirty.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 */
348 if (tp->t_flags & XFS_TRANS_DIRTY)
349 xfs_force_shutdown(tp->t_mountp,
Nathan Scott7d04a332006-06-09 14:58:38 +1000350 SHUTDOWN_META_IO_ERROR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 return error;
352 }
353 }
354 /*
355 * We never locked this buf ourselves, so we shouldn't
356 * brelse it either. Just get out.
357 */
358 if (XFS_FORCED_SHUTDOWN(mp)) {
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000359 trace_xfs_trans_read_buf_shut(bp, _RET_IP_);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 *bpp = NULL;
361 return XFS_ERROR(EIO);
362 }
363
364
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200365 bip = bp->b_fspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366 bip->bli_recur++;
367
368 ASSERT(atomic_read(&bip->bli_refcount) > 0);
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000369 trace_xfs_trans_read_buf_recur(bip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 *bpp = bp;
371 return 0;
372 }
373
374 /*
Christoph Hellwig0cadda12010-01-19 09:56:44 +0000375 * We always specify the XBF_DONT_BLOCK flag within a transaction
376 * so that get_buf does not try to push out a delayed write buffer
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 * which might cause another transaction to take place (if the
378 * buffer was delayed alloc). Such recursive transactions can
379 * easily deadlock with our current transaction as well as cause
380 * us to run out of stack space.
381 */
Christoph Hellwig0cadda12010-01-19 09:56:44 +0000382 bp = xfs_buf_read(target, blkno, len, flags | XBF_DONT_BLOCK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 if (bp == NULL) {
384 *bpp = NULL;
Dave Chinner7401aaf2011-03-26 09:14:44 +1100385 return (flags & XBF_TRYLOCK) ?
386 0 : XFS_ERROR(ENOMEM);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 }
Chandra Seetharaman5a52c2a582011-07-22 23:39:51 +0000388 if (bp->b_error) {
389 error = bp->b_error;
390 XFS_BUF_SUPER_STALE(bp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 xfs_ioerror_alert("xfs_trans_read_buf", mp,
392 bp, blkno);
393 if (tp->t_flags & XFS_TRANS_DIRTY)
Nathan Scott7d04a332006-06-09 14:58:38 +1000394 xfs_force_shutdown(tp->t_mountp, SHUTDOWN_META_IO_ERROR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 xfs_buf_relse(bp);
396 return error;
397 }
398#ifdef DEBUG
399 if (xfs_do_error && !(tp->t_flags & XFS_TRANS_DIRTY)) {
400 if (xfs_error_target == target) {
401 if (((xfs_req_num++) % xfs_error_mod) == 0) {
402 xfs_force_shutdown(tp->t_mountp,
Nathan Scott7d04a332006-06-09 14:58:38 +1000403 SHUTDOWN_META_IO_ERROR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 xfs_buf_relse(bp);
Dave Chinner0b932cc2011-03-07 10:08:35 +1100405 xfs_debug(mp, "Returning trans error!");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 return XFS_ERROR(EIO);
407 }
408 }
409 }
410#endif
411 if (XFS_FORCED_SHUTDOWN(mp))
412 goto shutdown_abort;
413
Christoph Hellwigd7e84f42010-02-15 23:35:09 +0000414 _xfs_trans_bjoin(tp, bp, 1);
415 trace_xfs_trans_read_buf(bp->b_fspriv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 *bpp = bp;
418 return 0;
419
420shutdown_abort:
421 /*
422 * the theory here is that buffer is good but we're
423 * bailing out because the filesystem is being forcibly
424 * shut down. So we should leave the b_flags alone since
425 * the buffer's not staled and just get out.
426 */
427#if defined(DEBUG)
428 if (XFS_BUF_ISSTALE(bp) && XFS_BUF_ISDELAYWRITE(bp))
Dave Chinner0b932cc2011-03-07 10:08:35 +1100429 xfs_notice(mp, "about to pop assert, bp == 0x%p", bp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430#endif
Chandra Seetharamaned432332011-07-22 23:39:39 +0000431 ASSERT((bp->b_flags & (XBF_STALE|XBF_DELWRI)) !=
Christoph Hellwig0cadda12010-01-19 09:56:44 +0000432 (XBF_STALE|XBF_DELWRI));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000434 trace_xfs_trans_read_buf_shut(bp, _RET_IP_);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 xfs_buf_relse(bp);
436 *bpp = NULL;
437 return XFS_ERROR(EIO);
438}
439
440
441/*
442 * Release the buffer bp which was previously acquired with one of the
443 * xfs_trans_... buffer allocation routines if the buffer has not
444 * been modified within this transaction. If the buffer is modified
445 * within this transaction, do decrement the recursion count but do
446 * not release the buffer even if the count goes to 0. If the buffer is not
447 * modified within the transaction, decrement the recursion count and
448 * release the buffer if the recursion count goes to 0.
449 *
450 * If the buffer is to be released and it was not modified before
451 * this transaction began, then free the buf_log_item associated with it.
452 *
453 * If the transaction pointer is NULL, make this just a normal
454 * brelse() call.
455 */
456void
457xfs_trans_brelse(xfs_trans_t *tp,
458 xfs_buf_t *bp)
459{
460 xfs_buf_log_item_t *bip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461
462 /*
463 * Default to a normal brelse() call if the tp is NULL.
464 */
465 if (tp == NULL) {
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200466 struct xfs_log_item *lip = bp->b_fspriv;
467
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200468 ASSERT(bp->b_transp == NULL);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200469
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 /*
471 * If there's a buf log item attached to the buffer,
472 * then let the AIL know that the buffer is being
473 * unlocked.
474 */
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200475 if (lip != NULL && lip->li_type == XFS_LI_BUF) {
476 bip = bp->b_fspriv;
477 xfs_trans_unlocked_item(bip->bli_item.li_ailp, lip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 }
479 xfs_buf_relse(bp);
480 return;
481 }
482
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200483 ASSERT(bp->b_transp == tp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200484 bip = bp->b_fspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 ASSERT(bip->bli_item.li_type == XFS_LI_BUF);
486 ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
Dave Chinnerc1155412010-05-07 11:05:19 +1000487 ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 ASSERT(atomic_read(&bip->bli_refcount) > 0);
489
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000490 trace_xfs_trans_brelse(bip);
491
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 /*
493 * If the release is just for a recursive lock,
494 * then decrement the count and return.
495 */
496 if (bip->bli_recur > 0) {
497 bip->bli_recur--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 return;
499 }
500
501 /*
502 * If the buffer is dirty within this transaction, we can't
503 * release it until we commit.
504 */
Christoph Hellwige98c4142010-06-23 18:11:15 +1000505 if (bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507
508 /*
509 * If the buffer has been invalidated, then we can't release
510 * it until the transaction commits to disk unless it is re-dirtied
511 * as part of this transaction. This prevents us from pulling
512 * the item from the AIL before we should.
513 */
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000514 if (bip->bli_flags & XFS_BLI_STALE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516
517 ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518
519 /*
520 * Free up the log item descriptor tracking the released item.
521 */
Christoph Hellwige98c4142010-06-23 18:11:15 +1000522 xfs_trans_del_item(&bip->bli_item);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523
524 /*
525 * Clear the hold flag in the buf log item if it is set.
526 * We wouldn't want the next user of the buffer to
527 * get confused.
528 */
529 if (bip->bli_flags & XFS_BLI_HOLD) {
530 bip->bli_flags &= ~XFS_BLI_HOLD;
531 }
532
533 /*
534 * Drop our reference to the buf log item.
535 */
536 atomic_dec(&bip->bli_refcount);
537
538 /*
539 * If the buf item is not tracking data in the log, then
540 * we must free it before releasing the buffer back to the
541 * free pool. Before releasing the buffer to the free pool,
542 * clear the transaction pointer in b_fsprivate2 to dissolve
543 * its relation to this transaction.
544 */
545 if (!xfs_buf_item_dirty(bip)) {
546/***
547 ASSERT(bp->b_pincount == 0);
548***/
549 ASSERT(atomic_read(&bip->bli_refcount) == 0);
550 ASSERT(!(bip->bli_item.li_flags & XFS_LI_IN_AIL));
551 ASSERT(!(bip->bli_flags & XFS_BLI_INODE_ALLOC_BUF));
552 xfs_buf_item_relse(bp);
553 bip = NULL;
554 }
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200555 bp->b_transp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556
557 /*
558 * If we've still got a buf log item on the buffer, then
559 * tell the AIL that the buffer is being unlocked.
560 */
561 if (bip != NULL) {
David Chinner783a2f62008-10-30 17:39:58 +1100562 xfs_trans_unlocked_item(bip->bli_item.li_ailp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 (xfs_log_item_t*)bip);
564 }
565
566 xfs_buf_relse(bp);
567 return;
568}
569
570/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 * Mark the buffer as not needing to be unlocked when the buf item's
572 * IOP_UNLOCK() routine is called. The buffer must already be locked
573 * and associated with the given transaction.
574 */
575/* ARGSUSED */
576void
577xfs_trans_bhold(xfs_trans_t *tp,
578 xfs_buf_t *bp)
579{
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200580 xfs_buf_log_item_t *bip = bp->b_fspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200582 ASSERT(bp->b_transp == tp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200583 ASSERT(bip != NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584 ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
Dave Chinnerc1155412010-05-07 11:05:19 +1000585 ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 ASSERT(atomic_read(&bip->bli_refcount) > 0);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200587
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 bip->bli_flags |= XFS_BLI_HOLD;
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000589 trace_xfs_trans_bhold(bip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590}
591
592/*
Tim Shimminefa092f2005-09-05 08:29:01 +1000593 * Cancel the previous buffer hold request made on this buffer
594 * for this transaction.
595 */
596void
597xfs_trans_bhold_release(xfs_trans_t *tp,
598 xfs_buf_t *bp)
599{
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200600 xfs_buf_log_item_t *bip = bp->b_fspriv;
Tim Shimminefa092f2005-09-05 08:29:01 +1000601
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200602 ASSERT(bp->b_transp == tp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200603 ASSERT(bip != NULL);
Tim Shimminefa092f2005-09-05 08:29:01 +1000604 ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
Dave Chinnerc1155412010-05-07 11:05:19 +1000605 ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL));
Tim Shimminefa092f2005-09-05 08:29:01 +1000606 ASSERT(atomic_read(&bip->bli_refcount) > 0);
607 ASSERT(bip->bli_flags & XFS_BLI_HOLD);
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000608
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200609 bip->bli_flags &= ~XFS_BLI_HOLD;
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000610 trace_xfs_trans_bhold_release(bip);
Tim Shimminefa092f2005-09-05 08:29:01 +1000611}
612
613/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614 * This is called to mark bytes first through last inclusive of the given
615 * buffer as needing to be logged when the transaction is committed.
616 * The buffer must already be associated with the given transaction.
617 *
618 * First and last are numbers relative to the beginning of this buffer,
619 * so the first byte in the buffer is numbered 0 regardless of the
620 * value of b_blkno.
621 */
622void
623xfs_trans_log_buf(xfs_trans_t *tp,
624 xfs_buf_t *bp,
625 uint first,
626 uint last)
627{
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200628 xfs_buf_log_item_t *bip = bp->b_fspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200630 ASSERT(bp->b_transp == tp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200631 ASSERT(bip != NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 ASSERT((first <= last) && (last < XFS_BUF_COUNT(bp)));
Christoph Hellwigcb669ca2011-07-13 13:43:49 +0200633 ASSERT(bp->b_iodone == NULL ||
634 bp->b_iodone == xfs_buf_iodone_callbacks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635
636 /*
637 * Mark the buffer as needing to be written out eventually,
638 * and set its iodone function to remove the buffer's buf log
639 * item from the AIL and free it when the buffer is flushed
640 * to disk. See xfs_buf_attach_iodone() for more details
641 * on li_cb and xfs_buf_iodone_callbacks().
642 * If we end up aborting this transaction, we trap this buffer
643 * inside the b_bdstrat callback so that this won't get written to
644 * disk.
645 */
646 XFS_BUF_DELAYWRITE(bp);
647 XFS_BUF_DONE(bp);
648
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 ASSERT(atomic_read(&bip->bli_refcount) > 0);
Christoph Hellwigcb669ca2011-07-13 13:43:49 +0200650 bp->b_iodone = xfs_buf_iodone_callbacks;
Christoph Hellwigca30b2a2010-06-23 18:11:15 +1000651 bip->bli_item.li_cb = xfs_buf_iodone;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000653 trace_xfs_trans_log_buf(bip);
654
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 /*
656 * If we invalidated the buffer within this transaction, then
657 * cancel the invalidation now that we're dirtying the buffer
658 * again. There are no races with the code in xfs_buf_item_unpin(),
659 * because we have a reference to the buffer this entire time.
660 */
661 if (bip->bli_flags & XFS_BLI_STALE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 bip->bli_flags &= ~XFS_BLI_STALE;
663 ASSERT(XFS_BUF_ISSTALE(bp));
664 XFS_BUF_UNSTALE(bp);
Dave Chinnerc1155412010-05-07 11:05:19 +1000665 bip->bli_format.blf_flags &= ~XFS_BLF_CANCEL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 }
667
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 tp->t_flags |= XFS_TRANS_DIRTY;
Christoph Hellwige98c4142010-06-23 18:11:15 +1000669 bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 bip->bli_flags |= XFS_BLI_LOGGED;
671 xfs_buf_item_log(bip, first, last);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672}
673
674
675/*
676 * This called to invalidate a buffer that is being used within
677 * a transaction. Typically this is because the blocks in the
678 * buffer are being freed, so we need to prevent it from being
679 * written out when we're done. Allowing it to be written again
680 * might overwrite data in the free blocks if they are reallocated
681 * to a file.
682 *
683 * We prevent the buffer from being written out by clearing the
684 * B_DELWRI flag. We can't always
685 * get rid of the buf log item at this point, though, because
686 * the buffer may still be pinned by another transaction. If that
687 * is the case, then we'll wait until the buffer is committed to
688 * disk for the last time (we can tell by the ref count) and
689 * free it in xfs_buf_item_unpin(). Until it is cleaned up we
690 * will keep the buffer locked so that the buffer and buf log item
691 * are not reused.
692 */
693void
694xfs_trans_binval(
695 xfs_trans_t *tp,
696 xfs_buf_t *bp)
697{
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200698 xfs_buf_log_item_t *bip = bp->b_fspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200700 ASSERT(bp->b_transp == tp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200701 ASSERT(bip != NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702 ASSERT(atomic_read(&bip->bli_refcount) > 0);
703
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000704 trace_xfs_trans_binval(bip);
705
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706 if (bip->bli_flags & XFS_BLI_STALE) {
707 /*
708 * If the buffer is already invalidated, then
709 * just return.
710 */
711 ASSERT(!(XFS_BUF_ISDELAYWRITE(bp)));
712 ASSERT(XFS_BUF_ISSTALE(bp));
713 ASSERT(!(bip->bli_flags & (XFS_BLI_LOGGED | XFS_BLI_DIRTY)));
Dave Chinnerc1155412010-05-07 11:05:19 +1000714 ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_INODE_BUF));
715 ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL);
Christoph Hellwige98c4142010-06-23 18:11:15 +1000716 ASSERT(bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 ASSERT(tp->t_flags & XFS_TRANS_DIRTY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 return;
719 }
720
721 /*
722 * Clear the dirty bit in the buffer and set the STALE flag
723 * in the buf log item. The STALE flag will be used in
724 * xfs_buf_item_unpin() to determine if it should clean up
725 * when the last reference to the buf item is given up.
Dave Chinnerc1155412010-05-07 11:05:19 +1000726 * We set the XFS_BLF_CANCEL flag in the buf log format structure
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727 * and log the buf item. This will be used at recovery time
728 * to determine that copies of the buffer in the log before
729 * this should not be replayed.
730 * We mark the item descriptor and the transaction dirty so
731 * that we'll hold the buffer until after the commit.
732 *
733 * Since we're invalidating the buffer, we also clear the state
734 * about which parts of the buffer have been logged. We also
735 * clear the flag indicating that this is an inode buffer since
736 * the data in the buffer will no longer be valid.
737 *
738 * We set the stale bit in the buffer as well since we're getting
739 * rid of it.
740 */
741 XFS_BUF_UNDELAYWRITE(bp);
742 XFS_BUF_STALE(bp);
743 bip->bli_flags |= XFS_BLI_STALE;
Dave Chinnerccf7c232010-05-20 23:19:42 +1000744 bip->bli_flags &= ~(XFS_BLI_INODE_BUF | XFS_BLI_LOGGED | XFS_BLI_DIRTY);
Dave Chinnerc1155412010-05-07 11:05:19 +1000745 bip->bli_format.blf_flags &= ~XFS_BLF_INODE_BUF;
746 bip->bli_format.blf_flags |= XFS_BLF_CANCEL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 memset((char *)(bip->bli_format.blf_data_map), 0,
748 (bip->bli_format.blf_map_size * sizeof(uint)));
Christoph Hellwige98c4142010-06-23 18:11:15 +1000749 bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750 tp->t_flags |= XFS_TRANS_DIRTY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751}
752
753/*
Dave Chinnerccf7c232010-05-20 23:19:42 +1000754 * This call is used to indicate that the buffer contains on-disk inodes which
755 * must be handled specially during recovery. They require special handling
756 * because only the di_next_unlinked from the inodes in the buffer should be
757 * recovered. The rest of the data in the buffer is logged via the inodes
758 * themselves.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 *
Dave Chinnerccf7c232010-05-20 23:19:42 +1000760 * All we do is set the XFS_BLI_INODE_BUF flag in the items flags so it can be
761 * transferred to the buffer's log format structure so that we'll know what to
762 * do at recovery time.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764void
765xfs_trans_inode_buf(
766 xfs_trans_t *tp,
767 xfs_buf_t *bp)
768{
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200769 xfs_buf_log_item_t *bip = bp->b_fspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200771 ASSERT(bp->b_transp == tp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200772 ASSERT(bip != NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 ASSERT(atomic_read(&bip->bli_refcount) > 0);
774
Dave Chinnerccf7c232010-05-20 23:19:42 +1000775 bip->bli_flags |= XFS_BLI_INODE_BUF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776}
777
778/*
779 * This call is used to indicate that the buffer is going to
780 * be staled and was an inode buffer. This means it gets
781 * special processing during unpin - where any inodes
782 * associated with the buffer should be removed from ail.
783 * There is also special processing during recovery,
784 * any replay of the inodes in the buffer needs to be
785 * prevented as the buffer may have been reused.
786 */
787void
788xfs_trans_stale_inode_buf(
789 xfs_trans_t *tp,
790 xfs_buf_t *bp)
791{
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200792 xfs_buf_log_item_t *bip = bp->b_fspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200794 ASSERT(bp->b_transp == tp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200795 ASSERT(bip != NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 ASSERT(atomic_read(&bip->bli_refcount) > 0);
797
798 bip->bli_flags |= XFS_BLI_STALE_INODE;
Christoph Hellwigca30b2a2010-06-23 18:11:15 +1000799 bip->bli_item.li_cb = xfs_buf_iodone;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800}
801
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802/*
803 * Mark the buffer as being one which contains newly allocated
804 * inodes. We need to make sure that even if this buffer is
805 * relogged as an 'inode buf' we still recover all of the inode
806 * images in the face of a crash. This works in coordination with
807 * xfs_buf_item_committed() to ensure that the buffer remains in the
808 * AIL at its original location even after it has been relogged.
809 */
810/* ARGSUSED */
811void
812xfs_trans_inode_alloc_buf(
813 xfs_trans_t *tp,
814 xfs_buf_t *bp)
815{
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200816 xfs_buf_log_item_t *bip = bp->b_fspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200818 ASSERT(bp->b_transp == tp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200819 ASSERT(bip != NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 ASSERT(atomic_read(&bip->bli_refcount) > 0);
821
822 bip->bli_flags |= XFS_BLI_INODE_ALLOC_BUF;
823}
824
825
826/*
827 * Similar to xfs_trans_inode_buf(), this marks the buffer as a cluster of
828 * dquots. However, unlike in inode buffer recovery, dquot buffers get
829 * recovered in their entirety. (Hence, no XFS_BLI_DQUOT_ALLOC_BUF flag).
830 * The only thing that makes dquot buffers different from regular
831 * buffers is that we must not replay dquot bufs when recovering
832 * if a _corresponding_ quotaoff has happened. We also have to distinguish
833 * between usr dquot bufs and grp dquot bufs, because usr and grp quotas
834 * can be turned off independently.
835 */
836/* ARGSUSED */
837void
838xfs_trans_dquot_buf(
839 xfs_trans_t *tp,
840 xfs_buf_t *bp,
841 uint type)
842{
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200843 xfs_buf_log_item_t *bip = bp->b_fspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844
Christoph Hellwigbf9d9012011-07-13 13:43:49 +0200845 ASSERT(bp->b_transp == tp);
Christoph Hellwigadadbee2011-07-13 13:43:49 +0200846 ASSERT(bip != NULL);
Dave Chinnerc1155412010-05-07 11:05:19 +1000847 ASSERT(type == XFS_BLF_UDQUOT_BUF ||
848 type == XFS_BLF_PDQUOT_BUF ||
849 type == XFS_BLF_GDQUOT_BUF);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850 ASSERT(atomic_read(&bip->bli_refcount) > 0);
851
852 bip->bli_format.blf_flags |= type;
853}