1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/lvfs/fsfilt_ext3.c
38 * Author: Andreas Dilger <adilger@clusterfs.com>
41 #define DEBUG_SUBSYSTEM S_FILTER
43 #include <linux/init.h>
44 #include <linux/module.h>
46 #include <linux/slab.h>
47 #include <linux/pagemap.h>
48 #include <linux/quotaops.h>
49 #ifdef HAVE_LINUX_EXPORTFS_H
50 #include <linux/exportfs.h>
52 #ifdef HAVE_EXT4_LDISKFS
53 #include <ext4/ext4.h>
54 #include <ext4/ext4_jbd2.h>
56 #include <linux/jbd.h>
57 #include <linux/ext3_fs.h>
58 #include <linux/ext3_jbd.h>
60 #include <linux/version.h>
61 #include <linux/bitops.h>
62 #include <linux/quota.h>
64 # include <linux/quotaio_v2.h>
65 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
66 # include <quota/quotaio_v2.h>
67 # include <quota/quota_tree.h>
68 # define V2_DQTREEOFF QT_TREEOFF
69 #elif defined(HAVE_FS_QUOTAIO_V1_H)
70 # include <quotaio_v2.h>
71 # include <quota_tree.h>
72 # define V2_DQTREEOFF QT_TREEOFF
73 # define V2_INITQVERSIONS_R1 V2_INITQVERSIONS
77 #define QFMT_LUSTRE QFMT_VFS_V1
79 #define QFMT_LUSTRE QFMT_VFS_V0
82 #if defined(HAVE_EXT3_XATTR_H)
83 #include <ext3/xattr.h>
85 /* ext3 xattr.h not available in rh style kernel-devel rpm */
86 extern int ext3_xattr_get(struct inode *, int, const char *, void *, size_t);
87 extern int ext3_xattr_set_handle(handle_t *, struct inode *, int, const char *, const void *, size_t, int);
90 #include <libcfs/libcfs.h>
91 #include <lustre_fsfilt.h>
93 #include <lustre_quota.h>
94 #include <linux/lustre_compat25.h>
95 #include <linux/lprocfs_status.h>
97 #ifdef HAVE_EXT4_LDISKFS
98 #include <ext4/ext4_extents.h>
100 #include <linux/ext3_extents.h>
103 #include "lustre_quota_fmt.h"
105 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
106 #define FSFILT_DATA_TRANS_BLOCKS(sb) EXT3_DATA_TRANS_BLOCKS
107 #define FSFILT_DELETE_TRANS_BLOCKS(sb) EXT3_DELETE_TRANS_BLOCKS
109 #define FSFILT_DATA_TRANS_BLOCKS(sb) EXT3_DATA_TRANS_BLOCKS(sb)
110 #define FSFILT_DELETE_TRANS_BLOCKS(sb) EXT3_DELETE_TRANS_BLOCKS(sb)
113 #ifdef EXT3_SINGLEDATA_TRANS_BLOCKS_HAS_SB
114 /* for kernels 2.6.18 and later */
115 #define FSFILT_SINGLEDATA_TRANS_BLOCKS(sb) EXT3_SINGLEDATA_TRANS_BLOCKS(sb)
117 #define FSFILT_SINGLEDATA_TRANS_BLOCKS(sb) EXT3_SINGLEDATA_TRANS_BLOCKS
120 #ifdef EXT_INSERT_EXTENT_WITH_5ARGS
121 #define fsfilt_ext3_ext_insert_extent(handle, inode, path, newext, flag) \
122 ext3_ext_insert_extent(handle, inode, path, newext, flag)
124 #define fsfilt_ext3_ext_insert_extent(handle, inode, path, newext, flag) \
125 ext3_ext_insert_extent(handle, inode, path, newext)
128 #ifdef EXT3_DISCARD_PREALLOCATIONS
129 #define ext3_mb_discard_inode_preallocations(inode) \
130 ext3_discard_preallocations(inode)
134 static cfs_mem_cache_t *fcb_cache;
136 struct fsfilt_cb_data {
137 struct journal_callback cb_jcb; /* jbd private data - MUST BE FIRST */
138 fsfilt_cb_t cb_func; /* MDS/OBD completion function */
139 struct obd_device *cb_obd; /* MDS/OBD completion device */
140 __u64 cb_last_rcvd; /* MDS/OST last committed operation */
141 void *cb_data; /* MDS/OST completion function data */
144 #ifndef EXT3_XATTR_INDEX_TRUSTED /* temporary until we hit l28 kernel */
145 #define EXT3_XATTR_INDEX_TRUSTED 4
148 #ifdef HAVE_EXT4_LDISKFS
149 #define fsfilt_log_start_commit(journal, tid) jbd2_log_start_commit(journal, tid)
150 #define fsfilt_log_wait_commit(journal, tid) jbd2_log_wait_commit(journal, tid)
151 #define fsfilt_journal_callback_set(handle, func, jcb) jbd2_journal_callback_set(handle, func, jcb)
153 #define fsfilt_log_start_commit(journal, tid) log_start_commit(journal, tid)
154 #define fsfilt_log_wait_commit(journal, tid) log_wait_commit(journal, tid)
155 #define fsfilt_journal_callback_set(handle, func, jcb) journal_callback_set(handle, func, jcb)
156 #define ext_pblock(ex) le32_to_cpu((ex)->ee_start)
157 #define ext3_ext_store_pblock(ex, pblock) ((ex)->ee_start = cpu_to_le32(pblock))
158 #define ext3_inode_bitmap(sb,desc) le32_to_cpu((desc)->bg_inode_bitmap)
161 #ifndef ext3_find_next_bit
162 #define ext3_find_next_bit ext2_find_next_bit
165 #ifndef ext2_find_next_bit
166 #ifdef __LITTLE_ENDIAN
167 #define ext2_find_next_bit(addr, size, off) find_next_bit((unsigned long *)(addr), (size), (off))
169 error "Need implementation of find_next_bit on big-endian systems"
170 #endif /* __LITTLE_ENDIAN */
171 #endif /* !ext2_find_next_le_bit */
173 static char *fsfilt_ext3_get_label(struct super_block *sb)
175 return EXT3_SB(sb)->s_es->s_volume_name;
178 static int fsfilt_ext3_set_label(struct super_block *sb, char *label)
180 /* see e.g. fsfilt_ext3_write_record() */
185 journal = EXT3_SB(sb)->s_journal;
186 handle = ext3_journal_start_sb(sb, 1);
187 if (IS_ERR(handle)) {
188 CERROR("can't start transaction\n");
189 return(PTR_ERR(handle));
192 err = ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh);
196 memcpy(EXT3_SB(sb)->s_es->s_volume_name, label,
197 sizeof(EXT3_SB(sb)->s_es->s_volume_name));
199 err = ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
202 ext3_journal_stop(handle);
207 static char *fsfilt_ext3_uuid(struct super_block *sb)
209 return EXT3_SB(sb)->s_es->s_uuid;
212 #ifdef HAVE_DISK_INODE_VERSION
214 static __u64 get_i_version(struct inode *inode)
216 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)) && defined(HAVE_EXT4_LDISKFS)
217 return inode->i_version;
219 return EXT3_I(inode)->i_fs_version;
223 static void set_i_version(struct inode *inode, __u64 new_version)
225 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)) && defined(HAVE_EXT4_LDISKFS)
226 inode->i_version = new_version;
228 (EXT3_I(inode))->i_fs_version = new_version;
233 * Get the 64-bit version for an inode.
235 static __u64 fsfilt_ext3_get_version(struct inode *inode)
237 CDEBUG(D_INFO, "Get version "LPX64" for inode %lu\n",
238 get_i_version(inode), inode->i_ino);
239 return get_i_version(inode);
243 * Set the 64-bit version and return the old version.
245 static __u64 fsfilt_ext3_set_version(struct inode *inode, __u64 new_version)
247 __u64 old_version = get_i_version(inode);
249 CDEBUG(D_INFO, "Set version "LPX64" (old "LPX64") for inode %lu\n",
250 new_version, old_version, inode->i_ino);
251 set_i_version(inode, new_version);
252 /* version is set after all inode operations are finished, so we should
253 * mark it dirty here */
254 inode->i_sb->s_op->dirty_inode(inode);
261 * We don't currently need any additional blocks for rmdir and
262 * unlink transactions because we are storing the OST oa_id inside
263 * the inode (which we will be changing anyways as part of this
266 static void *fsfilt_ext3_start(struct inode *inode, int op, void *desc_private,
269 /* For updates to the last received file */
270 int nblocks = FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb);
274 if (current->journal_info) {
275 CDEBUG(D_INODE, "increasing refcount on %p\n",
276 current->journal_info);
281 case FSFILT_OP_RMDIR:
282 case FSFILT_OP_UNLINK:
283 /* delete one file + create/update logs for each stripe */
284 nblocks += FSFILT_DELETE_TRANS_BLOCKS(inode->i_sb);
285 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
286 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
288 case FSFILT_OP_RENAME:
289 /* modify additional directory */
290 nblocks += FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb);
292 case FSFILT_OP_SYMLINK:
293 /* additional block + block bitmap + GDT for long symlink */
296 case FSFILT_OP_CREATE: {
297 #if defined(EXT3_EXTENTS_FL) && defined(EXT3_INDEX_FL) && !defined(HAVE_EXT4_LDISKFS)
300 if (!test_opt(inode->i_sb, EXTENTS)) {
302 } else if (((EXT3_I(inode)->i_flags &
303 cpu_to_le32(EXT3_EXTENTS_FL | EXT3_INDEX_FL)) ==
304 cpu_to_le32(EXT3_EXTENTS_FL | EXT3_INDEX_FL))) {
305 CWARN("extent-mapped directory found with "
306 "ext3-based ldiskfs - contact "
307 "http://bugzilla.lustre.org/\n");
314 case FSFILT_OP_MKDIR:
315 case FSFILT_OP_MKNOD:
316 /* modify one inode + block bitmap + GDT */
320 /* modify parent directory */
321 nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
322 FSFILT_DATA_TRANS_BLOCKS(inode->i_sb);
323 /* create/update logs for each stripe */
324 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
325 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
327 case FSFILT_OP_SETATTR:
328 /* Setattr on inode */
330 nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
331 FSFILT_DATA_TRANS_BLOCKS(inode->i_sb);
332 /* quota chown log for each stripe */
333 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
334 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
336 case FSFILT_OP_CANCEL_UNLINK:
337 /* blocks for log header bitmap update OR
338 * blocks for catalog header bitmap update + unlink of logs */
339 nblocks = (LLOG_CHUNK_SIZE >> inode->i_blkbits) +
340 FSFILT_DELETE_TRANS_BLOCKS(inode->i_sb) * logs;
342 default: CERROR("unknown transaction start op %d\n", op);
346 LASSERT(current->journal_info == desc_private);
347 journal = EXT3_SB(inode->i_sb)->s_journal;
348 if (nblocks > journal->j_max_transaction_buffers) {
349 CWARN("too many credits %d for op %ux%u using %d instead\n",
350 nblocks, op, logs, journal->j_max_transaction_buffers);
351 nblocks = journal->j_max_transaction_buffers;
355 LASSERTF(nblocks > 0, "can't start %d credit transaction\n", nblocks);
356 handle = ext3_journal_start(inode, nblocks);
359 LASSERT(current->journal_info == handle);
361 CERROR("error starting handle for op %u (%u credits): rc %ld\n",
362 op, nblocks, PTR_ERR(handle));
367 * Calculate the number of buffer credits needed to write multiple pages in
368 * a single ext3 transaction. No, this shouldn't be here, but as yet ext3
369 * doesn't have a nice API for calculating this sort of thing in advance.
371 * See comment above ext3_writepage_trans_blocks for details. We assume
372 * no data journaling is being done, but it does allow for all of the pages
373 * being non-contiguous. If we are guaranteed contiguous pages we could
374 * reduce the number of (d)indirect blocks a lot.
376 * With N blocks per page and P pages, for each inode we have at most:
378 * min(N*P, blocksize/4 + 1) dindirect blocks
381 * For the entire filesystem, we have at most:
382 * min(sum(nindir + P), ngroups) bitmap blocks (from the above)
383 * min(sum(nindir + P), gdblocks) group descriptor blocks (from the above)
384 * objcount inode blocks
386 * 2 * EXT3_SINGLEDATA_TRANS_BLOCKS for the quota files
388 * 1 EXT3_DATA_TRANS_BLOCKS for the last_rcvd update.
390 static int fsfilt_ext3_credits_needed(int objcount, struct fsfilt_objinfo *fso,
391 int niocount, struct niobuf_local *nb)
393 struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
395 const int blockpp = 1 << (CFS_PAGE_SHIFT - sb->s_blocksize_bits);
396 int nbitmaps = 0, ngdblocks;
397 int needed = objcount + 1; /* inodes + superblock */
400 for (i = 0, j = 0; i < objcount; i++, fso++) {
401 /* two or more dindirect blocks in case we cross boundary */
402 int ndind = (long)((nb[j + fso->fso_bufcnt - 1].offset -
404 sb->s_blocksize_bits) /
405 (EXT3_ADDR_PER_BLOCK(sb) * EXT3_ADDR_PER_BLOCK(sb));
406 nbitmaps += min(fso->fso_bufcnt, ndind > 0 ? ndind : 2);
408 /* leaf, indirect, tindirect blocks for first block */
409 nbitmaps += blockpp + 2;
411 j += fso->fso_bufcnt;
414 next_indir = nb[0].offset +
415 (EXT3_ADDR_PER_BLOCK(sb) << sb->s_blocksize_bits);
416 for (i = 1; i < niocount; i++) {
417 if (nb[i].offset >= next_indir) {
418 nbitmaps++; /* additional indirect */
419 next_indir = nb[i].offset +
420 (EXT3_ADDR_PER_BLOCK(sb)<<sb->s_blocksize_bits);
421 } else if (nb[i].offset != nb[i - 1].offset + sb->s_blocksize) {
422 nbitmaps++; /* additional indirect */
424 nbitmaps += blockpp; /* each leaf in different group? */
427 ngdblocks = nbitmaps;
428 if (nbitmaps > EXT3_SB(sb)->s_groups_count)
429 nbitmaps = EXT3_SB(sb)->s_groups_count;
430 if (ngdblocks > EXT3_SB(sb)->s_gdb_count)
431 ngdblocks = EXT3_SB(sb)->s_gdb_count;
433 needed += nbitmaps + ngdblocks;
435 /* last_rcvd update */
436 needed += FSFILT_DATA_TRANS_BLOCKS(sb);
438 #if defined(CONFIG_QUOTA)
439 /* We assume that there will be 1 bit set in s_dquot.flags for each
440 * quota file that is active. This is at least true for now.
442 needed += hweight32(ll_sb_any_quota_active(sb)) *
443 FSFILT_SINGLEDATA_TRANS_BLOCKS(sb);
449 /* We have to start a huge journal transaction here to hold all of the
450 * metadata for the pages being written here. This is necessitated by
451 * the fact that we do lots of prepare_write operations before we do
452 * any of the matching commit_write operations, so even if we split
453 * up to use "smaller" transactions none of them could complete until
454 * all of them were opened. By having a single journal transaction,
455 * we eliminate duplicate reservations for common blocks like the
456 * superblock and group descriptors or bitmaps.
458 * We will start the transaction here, but each prepare_write will
459 * add a refcount to the transaction, and each commit_write will
460 * remove a refcount. The transaction will be closed when all of
461 * the pages have been written.
463 static void *fsfilt_ext3_brw_start(int objcount, struct fsfilt_objinfo *fso,
464 int niocount, struct niobuf_local *nb,
465 void *desc_private, int logs)
472 LASSERT(current->journal_info == desc_private);
473 journal = EXT3_SB(fso->fso_dentry->d_inode->i_sb)->s_journal;
474 needed = fsfilt_ext3_credits_needed(objcount, fso, niocount, nb);
476 /* The number of blocks we could _possibly_ dirty can very large.
477 * We reduce our request if it is absurd (and we couldn't get that
478 * many credits for a single handle anyways).
480 * At some point we have to limit the size of I/Os sent at one time,
481 * increase the size of the journal, or we have to calculate the
482 * actual journal requirements more carefully by checking all of
483 * the blocks instead of being maximally pessimistic. It remains to
484 * be seen if this is a real problem or not.
486 if (needed > journal->j_max_transaction_buffers) {
487 CERROR("want too many journal credits (%d) using %d instead\n",
488 needed, journal->j_max_transaction_buffers);
489 needed = journal->j_max_transaction_buffers;
492 LASSERTF(needed > 0, "can't start %d credit transaction\n", needed);
493 handle = ext3_journal_start(fso->fso_dentry->d_inode, needed);
494 if (IS_ERR(handle)) {
495 CERROR("can't get handle for %d credits: rc = %ld\n", needed,
498 LASSERT(handle->h_buffer_credits >= needed);
499 LASSERT(current->journal_info == handle);
505 static int fsfilt_ext3_extend(struct inode *inode, unsigned int nblocks,void *h)
507 handle_t *handle = h;
509 /* fsfilt_extend called with nblocks = 0 for testing in special cases */
511 handle->h_buffer_credits = 0;
512 CWARN("setting credits of handle %p to zero by request\n", h);
515 if (handle->h_buffer_credits > nblocks)
517 if (ext3_journal_extend(handle, nblocks) == 0)
520 ext3_mark_inode_dirty(handle, inode);
521 return ext3_journal_restart(handle, nblocks);
524 static int fsfilt_ext3_commit(struct inode *inode, void *h, int force_sync)
527 handle_t *handle = h;
529 LASSERT(current->journal_info == handle);
531 handle->h_sync = 1; /* recovery likes this */
533 rc = ext3_journal_stop(handle);
538 static int fsfilt_ext3_commit_async(struct inode *inode, void *h,
542 transaction_t *transaction;
543 handle_t *handle = h;
547 LASSERT(current->journal_info == handle);
549 transaction = handle->h_transaction;
550 journal = transaction->t_journal;
551 tid = transaction->t_tid;
552 /* we don't want to be blocked */
554 rc = ext3_journal_stop(handle);
556 CERROR("error while stopping transaction: %d\n", rc);
559 fsfilt_log_start_commit(journal, tid);
561 *wait_handle = (void *) tid;
562 CDEBUG(D_INODE, "commit async: %lu\n", (unsigned long) tid);
566 static int fsfilt_ext3_commit_wait(struct inode *inode, void *h)
568 journal_t *journal = EXT3_JOURNAL(inode);
569 tid_t tid = (tid_t)(long)h;
571 CDEBUG(D_INODE, "commit wait: %lu\n", (unsigned long) tid);
572 if (unlikely(is_journal_aborted(journal)))
575 fsfilt_log_wait_commit(EXT3_JOURNAL(inode), tid);
577 if (unlikely(is_journal_aborted(journal)))
582 static int fsfilt_ext3_setattr(struct dentry *dentry, void *handle,
583 struct iattr *iattr, int do_trunc)
585 struct inode *inode = dentry->d_inode;
588 /* Avoid marking the inode dirty on the superblock list unnecessarily.
589 * We are already writing the inode to disk as part of this
590 * transaction and want to avoid a lot of extra inode writeout
591 * later on. b=9828 */
592 if (iattr->ia_valid & ATTR_SIZE && !do_trunc) {
593 /* ATTR_SIZE would invoke truncate: clear it */
594 iattr->ia_valid &= ~ATTR_SIZE;
595 EXT3_I(inode)->i_disksize = iattr->ia_size;
596 i_size_write(inode, iattr->ia_size);
598 if (iattr->ia_valid & ATTR_UID)
599 inode->i_uid = iattr->ia_uid;
600 if (iattr->ia_valid & ATTR_GID)
601 inode->i_gid = iattr->ia_gid;
602 if (iattr->ia_valid & ATTR_ATIME)
603 inode->i_atime = iattr->ia_atime;
604 if (iattr->ia_valid & ATTR_MTIME)
605 inode->i_mtime = iattr->ia_mtime;
606 if (iattr->ia_valid & ATTR_CTIME)
607 inode->i_ctime = iattr->ia_ctime;
608 if (iattr->ia_valid & ATTR_MODE) {
609 inode->i_mode = iattr->ia_mode;
611 if (!cfs_curproc_is_in_groups(inode->i_gid) &&
612 !cfs_capable(CFS_CAP_FSETID))
613 inode->i_mode &= ~S_ISGID;
616 inode->i_sb->s_op->dirty_inode(inode);
621 /* Don't allow setattr to change file type */
622 if (iattr->ia_valid & ATTR_MODE)
623 iattr->ia_mode = (inode->i_mode & S_IFMT) |
624 (iattr->ia_mode & ~S_IFMT);
626 /* We set these flags on the client, but have already checked perms
627 * so don't confuse inode_change_ok. */
628 iattr->ia_valid &= ~(ATTR_MTIME_SET | ATTR_ATIME_SET);
630 if (inode->i_op->setattr) {
631 rc = inode->i_op->setattr(dentry, iattr);
633 rc = inode_change_ok(inode, iattr);
635 rc = inode_setattr(inode, iattr);
642 static int fsfilt_ext3_iocontrol(struct inode *inode, struct file *file,
643 unsigned int cmd, unsigned long arg)
648 /* FIXME: Can't do this because of nested transaction deadlock */
649 if (cmd == EXT3_IOC_SETFLAGS) {
650 /* We can't enable data journaling on OST objects, because
651 * this forces the transaction to be closed in order to
652 * flush the journal, but the caller will already have a
653 * compound transaction open to update the last_rcvd file,
654 * and this thread would deadlock trying to set the flag. */
655 if ((*(int *)arg) & EXT3_JOURNAL_DATA_FL) {
656 CERROR("can't set data journal flag on file\n");
659 /* Because the MDS does not see the EXTENTS_FL set on the
660 * OST objects, mask this flag into all set flags. It is
661 * not legal to clear this flag in any case, so we are not
662 * changing the functionality by doing this. b=22911 */
663 *(int *)arg |= EXT3_I(inode)->i_flags & EXT3_EXTENTS_FL;
666 #ifdef HAVE_EXT4_LDISKFS
667 /* ext4_ioctl does not have a inode argument */
668 if (inode->i_fop->unlocked_ioctl)
669 rc = inode->i_fop->unlocked_ioctl(file, cmd, arg);
671 if (inode->i_fop->ioctl)
672 rc = inode->i_fop->ioctl(inode, file, cmd, arg);
680 static int fsfilt_ext3_set_md(struct inode *inode, void *handle,
681 void *lmm, int lmm_size, const char *name)
685 LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
687 rc = ext3_xattr_set_handle(handle, inode, EXT3_XATTR_INDEX_TRUSTED,
688 name, lmm, lmm_size, XATTR_NO_CTIME);
691 if (rc && rc != -EROFS)
692 CERROR("error adding MD data to inode %lu: rc = %d\n",
697 /* Must be called with i_mutex held */
698 static int fsfilt_ext3_get_md(struct inode *inode, void *lmm, int lmm_size,
703 LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
705 rc = ext3_xattr_get(inode, EXT3_XATTR_INDEX_TRUSTED,
706 name, lmm, lmm_size);
708 /* This gives us the MD size */
710 return (rc == -ENODATA) ? 0 : rc;
713 CDEBUG(D_INFO, "error getting EA %d/%s from inode %lu: rc %d\n",
714 EXT3_XATTR_INDEX_TRUSTED, name,
716 memset(lmm, 0, lmm_size);
717 return (rc == -ENODATA) ? 0 : rc;
723 static int fsfilt_ext3_send_bio(int rw, struct inode *inode, struct bio *bio)
729 static ssize_t fsfilt_ext3_readpage(struct file *file, char *buf, size_t count,
732 struct inode *inode = file->f_dentry->d_inode;
735 if (S_ISREG(inode->i_mode))
736 rc = file->f_op->read(file, buf, count, off);
738 const int blkbits = inode->i_sb->s_blocksize_bits;
739 const int blksize = inode->i_sb->s_blocksize;
741 CDEBUG(D_EXT2, "reading %lu at dir %lu+%llu\n",
742 (unsigned long)count, inode->i_ino, *off);
744 struct buffer_head *bh;
747 if (*off < i_size_read(inode)) {
750 bh = ext3_bread(NULL, inode, *off >> blkbits,
753 CDEBUG(D_EXT2, "read %u@%llu\n", blksize, *off);
756 memcpy(buf, bh->b_data, blksize);
759 /* XXX in theory we should just fake
760 * this buffer and continue like ext3,
761 * especially if this is a partial read
763 CERROR("error read dir %lu+%llu: %d\n",
764 inode->i_ino, *off, err);
769 struct ext3_dir_entry_2 *fake = (void *)buf;
771 CDEBUG(D_EXT2, "fake %u@%llu\n", blksize, *off);
772 memset(fake, 0, sizeof(*fake));
773 fake->rec_len = cpu_to_le16(blksize);
785 static void fsfilt_ext3_cb_func(struct journal_callback *jcb, int error)
787 struct fsfilt_cb_data *fcb = (struct fsfilt_cb_data *)jcb;
789 fcb->cb_func(fcb->cb_obd, fcb->cb_last_rcvd, fcb->cb_data, error);
791 OBD_SLAB_FREE(fcb, fcb_cache, sizeof *fcb);
794 static int fsfilt_ext3_add_journal_cb(struct obd_device *obd, __u64 last_rcvd,
795 void *handle, fsfilt_cb_t cb_func,
798 struct fsfilt_cb_data *fcb;
800 OBD_SLAB_ALLOC_PTR_GFP(fcb, fcb_cache, CFS_ALLOC_IO);
804 fcb->cb_func = cb_func;
806 fcb->cb_last_rcvd = last_rcvd;
807 fcb->cb_data = cb_data;
809 CDEBUG(D_EXT2, "set callback for last_rcvd: "LPD64"\n", last_rcvd);
810 fsfilt_journal_callback_set(handle, fsfilt_ext3_cb_func,
811 (struct journal_callback *)fcb);
816 static int fsfilt_ext3_statfs(struct super_block *sb, struct obd_statfs *osfs)
821 memset(&sfs, 0, sizeof(sfs));
822 rc = ll_do_statfs(sb, &sfs);
823 statfs_pack(osfs, &sfs);
827 static int fsfilt_ext3_sync(struct super_block *sb)
829 return ext3_force_commit(sb);
832 #ifndef EXT3_EXTENTS_FL
833 #define EXT3_EXTENTS_FL 0x00080000 /* Inode uses extents */
836 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
837 # define fsfilt_up_truncate_sem(inode) up(&LDISKFS_I(inode)->truncate_sem);
838 # define fsfilt_down_truncate_sem(inode) down(&LDISKFS_I(inode)->truncate_sem);
840 # ifdef HAVE_EXT4_LDISKFS
841 # ifdef WALK_SPACE_HAS_DATA_SEM /* We only use it in fsfilt_map_nblocks() for now */
842 # define fsfilt_up_truncate_sem(inode) do{ }while(0)
843 # define fsfilt_down_truncate_sem(inode) do{ }while(0)
845 # define fsfilt_up_truncate_sem(inode) up_write((&EXT4_I(inode)->i_data_sem))
846 # define fsfilt_down_truncate_sem(inode) down_write((&EXT4_I(inode)->i_data_sem))
849 # define fsfilt_up_truncate_sem(inode) mutex_unlock(&EXT3_I(inode)->truncate_mutex)
850 # define fsfilt_down_truncate_sem(inode) mutex_lock(&EXT3_I(inode)->truncate_mutex)
855 #define EXT_ASSERT(cond) BUG_ON(!(cond))
858 #ifdef EXT3_EXT_HAS_NO_TREE
859 /* for kernels 2.6.18 and later */
860 #ifdef HAVE_EXT4_LDISKFS
861 #define EXT_GENERATION(inode) (EXT4_I(inode)->i_ext_generation)
863 #define EXT_GENERATION(inode) ext_generation(inode)
865 #define ext3_ext_base inode
866 #define ext3_ext_base2inode(inode) (inode)
867 #define EXT_DEPTH(inode) ext_depth(inode)
868 #define fsfilt_ext3_ext_walk_space(inode, block, num, cb, cbdata) \
869 ext3_ext_walk_space(inode, block, num, cb, cbdata);
871 #define ext3_ext_base ext3_extents_tree
872 #define ext3_ext_base2inode(tree) (tree->inode)
873 #define fsfilt_ext3_ext_walk_space(tree, block, num, cb, cbdata) \
874 ext3_ext_walk_space(tree, block, num, cb);
877 #ifdef EXT_INSERT_EXTENT_WITH_5ARGS
878 #define fsfilt_ext3_ext_insert_extent(handle, inode, path, newext, flag) \
879 ext3_ext_insert_extent(handle, inode, path, newext, flag)
881 #define fsfilt_ext3_ext_insert_extent(handle, inode, path, newext, flag) \
882 ext3_ext_insert_extent(handle, inode, path, newext)
885 #include <linux/lustre_version.h>
888 unsigned long *blocks;
896 static long ext3_ext_find_goal(struct inode *inode, struct ext3_ext_path *path,
897 unsigned long block, int *aflags)
899 struct ext3_inode_info *ei = EXT3_I(inode);
900 unsigned long bg_start;
901 unsigned long colour;
905 struct ext3_extent *ex;
906 depth = path->p_depth;
908 /* try to predict block placement */
909 if ((ex = path[depth].p_ext))
910 return ext_pblock(ex) + (block - le32_to_cpu(ex->ee_block));
912 /* it looks index is empty
913 * try to find starting from index itself */
914 if (path[depth].p_bh)
915 return path[depth].p_bh->b_blocknr;
918 /* OK. use inode's group */
919 bg_start = (ei->i_block_group * EXT3_BLOCKS_PER_GROUP(inode->i_sb)) +
920 le32_to_cpu(EXT3_SB(inode->i_sb)->s_es->s_first_data_block);
921 colour = (current->pid % 16) *
922 (EXT3_BLOCKS_PER_GROUP(inode->i_sb) / 16);
923 return bg_start + colour + block;
926 #define ll_unmap_underlying_metadata(sb, blocknr) \
927 unmap_underlying_metadata((sb)->s_bdev, blocknr)
929 #ifndef EXT3_MB_HINT_GROUP_ALLOC
930 static unsigned long new_blocks(handle_t *handle, struct ext3_ext_base *base,
931 struct ext3_ext_path *path, unsigned long block,
932 unsigned long *count, int *err)
934 unsigned long pblock, goal;
936 struct inode *inode = ext3_ext_base2inode(base);
938 goal = ext3_ext_find_goal(inode, path, block, &aflags);
939 aflags |= 2; /* block have been already reserved */
940 pblock = ext3_mb_new_blocks(handle, inode, goal, count, aflags, err);
945 static unsigned long new_blocks(handle_t *handle, struct ext3_ext_base *base,
946 struct ext3_ext_path *path, unsigned long block,
947 unsigned long *count, int *err)
949 struct inode *inode = ext3_ext_base2inode(base);
950 struct ext3_allocation_request ar;
951 unsigned long pblock;
954 /* find neighbour allocated blocks */
956 *err = ext3_ext_search_left(base, path, &ar.lleft, &ar.pleft);
960 *err = ext3_ext_search_right(base, path, &ar.lright, &ar.pright);
964 /* allocate new block */
965 ar.goal = ext3_ext_find_goal(inode, path, block, &aflags);
969 ar.flags = EXT3_MB_HINT_DATA;
970 pblock = ext3_mb_new_blocks(handle, &ar, err);
976 #ifdef EXT3_EXT_HAS_NO_TREE
977 static int ext3_ext_new_extent_cb(struct ext3_ext_base *base,
978 struct ext3_ext_path *path,
979 struct ext3_ext_cache *cex,
980 #ifdef HAVE_EXT_PREPARE_CB_EXTENT
981 struct ext3_extent *ex,
985 struct bpointers *bp = cbdata;
987 static int ext3_ext_new_extent_cb(struct ext3_ext_base *base,
988 struct ext3_ext_path *path,
989 struct ext3_ext_cache *cex
990 #ifdef HAVE_EXT_PREPARE_CB_EXTENT
991 , struct ext3_extent *ex
995 struct bpointers *bp = base->private;
997 struct inode *inode = ext3_ext_base2inode(base);
998 struct ext3_extent nex;
999 unsigned long pblock;
1002 unsigned long count;
1005 i = EXT_DEPTH(base);
1006 EXT_ASSERT(i == path->p_depth);
1007 EXT_ASSERT(path[i].p_hdr);
1009 if (cex->ec_type == EXT3_EXT_CACHE_EXTENT) {
1014 if (bp->create == 0) {
1016 if (cex->ec_block < bp->start)
1017 i = bp->start - cex->ec_block;
1018 if (i >= cex->ec_len)
1019 CERROR("nothing to do?! i = %d, e_num = %u\n",
1021 for (; i < cex->ec_len && bp->num; i++) {
1030 return EXT_CONTINUE;
1033 tgen = EXT_GENERATION(base);
1034 count = ext3_ext_calc_credits_for_insert(base, path);
1035 fsfilt_up_truncate_sem(inode);
1037 handle = ext3_journal_start(inode, count+EXT3_ALLOC_NEEDED+1);
1038 if (IS_ERR(handle)) {
1039 fsfilt_down_truncate_sem(inode);
1040 return PTR_ERR(handle);
1043 fsfilt_down_truncate_sem(inode);
1044 if (tgen != EXT_GENERATION(base)) {
1045 /* the tree has changed. so path can be invalid at moment */
1046 ext3_journal_stop(handle);
1050 count = cex->ec_len;
1051 pblock = new_blocks(handle, base, path, cex->ec_block, &count, &err);
1054 EXT_ASSERT(count <= cex->ec_len);
1056 /* insert new extent */
1057 nex.ee_block = cpu_to_le32(cex->ec_block);
1058 ext3_ext_store_pblock(&nex, pblock);
1059 nex.ee_len = cpu_to_le16(count);
1060 err = fsfilt_ext3_ext_insert_extent(handle, base, path, &nex, 0);
1062 /* free data blocks we just allocated */
1063 /* not a good idea to call discard here directly,
1064 * but otherwise we'd need to call it every free() */
1065 #ifdef EXT3_MB_HINT_GROUP_ALLOC
1066 ext3_mb_discard_inode_preallocations(inode);
1068 ext3_free_blocks(handle, inode, ext_pblock(&nex),
1069 cpu_to_le16(nex.ee_len), 0);
1074 * Putting len of the actual extent we just inserted,
1075 * we are asking ext3_ext_walk_space() to continue
1076 * scaning after that block
1078 cex->ec_len = le16_to_cpu(nex.ee_len);
1079 cex->ec_start = ext_pblock(&nex);
1080 BUG_ON(le16_to_cpu(nex.ee_len) == 0);
1081 BUG_ON(le32_to_cpu(nex.ee_block) != cex->ec_block);
1084 ext3_journal_stop(handle);
1089 CERROR("hmm. why do we find this extent?\n");
1090 CERROR("initial space: %lu:%u\n",
1091 bp->start, bp->init_num);
1092 CERROR("current extent: %u/%u/%llu %d\n",
1093 cex->ec_block, cex->ec_len,
1094 (unsigned long long)cex->ec_start,
1098 if (cex->ec_block < bp->start)
1099 i = bp->start - cex->ec_block;
1100 if (i >= cex->ec_len)
1101 CERROR("nothing to do?! i = %d, e_num = %u\n",
1103 for (; i < cex->ec_len && bp->num; i++) {
1104 *(bp->blocks) = cex->ec_start + i;
1105 if (cex->ec_type == EXT3_EXT_CACHE_EXTENT) {
1109 /* unmap any possible underlying metadata from
1110 * the block device mapping. bug 6998. */
1111 ll_unmap_underlying_metadata(inode->i_sb,
1123 int fsfilt_map_nblocks(struct inode *inode, unsigned long block,
1124 unsigned long num, unsigned long *blocks,
1125 int *created, int create)
1127 #ifdef EXT3_EXT_HAS_NO_TREE
1128 struct ext3_ext_base *base = inode;
1130 struct ext3_extents_tree tree;
1131 struct ext3_ext_base *base = &tree;
1133 struct bpointers bp;
1136 CDEBUG(D_OTHER, "blocks %lu-%lu requested for inode %u\n",
1137 block, block + num - 1, (unsigned) inode->i_ino);
1139 #ifndef EXT3_EXT_HAS_NO_TREE
1140 ext3_init_tree_desc(base, inode);
1144 bp.created = created;
1146 bp.init_num = bp.num = num;
1149 fsfilt_down_truncate_sem(inode);
1150 err = fsfilt_ext3_ext_walk_space(base, block, num,
1151 ext3_ext_new_extent_cb, &bp);
1152 ext3_ext_invalidate_cache(base);
1153 fsfilt_up_truncate_sem(inode);
1158 int fsfilt_ext3_map_ext_inode_pages(struct inode *inode, struct page **page,
1159 int pages, unsigned long *blocks,
1160 int *created, int create)
1162 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
1164 struct page *fp = NULL;
1167 CDEBUG(D_OTHER, "inode %lu: map %d pages from %lu\n",
1168 inode->i_ino, pages, (*page)->index);
1170 /* pages are sorted already. so, we just have to find
1171 * contig. space and process them properly */
1174 /* start new extent */
1179 } else if (fp->index + clen == (*page)->index) {
1180 /* continue the extent */
1187 /* process found extent */
1188 rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
1189 clen * blocks_per_page, blocks,
1194 /* look for next extent */
1196 blocks += blocks_per_page * clen;
1197 created += blocks_per_page * clen;
1201 rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
1202 clen * blocks_per_page, blocks,
1208 extern int ext3_map_inode_page(struct inode *inode, struct page *page,
1209 unsigned long *blocks, int *created, int create);
1210 int fsfilt_ext3_map_bm_inode_pages(struct inode *inode, struct page **page,
1211 int pages, unsigned long *blocks,
1212 int *created, int create)
1214 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
1218 for (i = 0, cr = created, b = blocks; i < pages; i++, page++) {
1219 rc = ext3_map_inode_page(inode, *page, b, cr, create);
1221 CERROR("ino %lu, blk %lu cr %u create %d: rc %d\n",
1222 inode->i_ino, *b, *cr, create, rc);
1226 b += blocks_per_page;
1227 cr += blocks_per_page;
1232 int fsfilt_ext3_map_inode_pages(struct inode *inode, struct page **page,
1233 int pages, unsigned long *blocks,
1234 int *created, int create,
1235 cfs_semaphore_t *optional_sem)
1239 if (EXT3_I(inode)->i_flags & EXT3_EXTENTS_FL) {
1240 rc = fsfilt_ext3_map_ext_inode_pages(inode, page, pages,
1241 blocks, created, create);
1244 if (optional_sem != NULL)
1245 cfs_down(optional_sem);
1246 rc = fsfilt_ext3_map_bm_inode_pages(inode, page, pages, blocks,
1248 if (optional_sem != NULL)
1249 cfs_up(optional_sem);
1254 int fsfilt_ext3_read(struct inode *inode, void *buf, int size, loff_t *offs)
1256 unsigned long block;
1257 struct buffer_head *bh;
1258 int err, blocksize, csize, boffs, osize = size;
1260 /* prevent reading after eof */
1262 if (i_size_read(inode) < *offs + size) {
1263 size = i_size_read(inode) - *offs;
1264 cfs_unlock_kernel();
1266 CDEBUG(D_EXT2, "size %llu is too short for read @%llu\n",
1267 i_size_read(inode), *offs);
1269 } else if (size == 0) {
1273 cfs_unlock_kernel();
1276 blocksize = 1 << inode->i_blkbits;
1279 block = *offs >> inode->i_blkbits;
1280 boffs = *offs & (blocksize - 1);
1281 csize = min(blocksize - boffs, size);
1282 bh = ext3_bread(NULL, inode, block, 0, &err);
1284 CERROR("can't read block: %d\n", err);
1288 memcpy(buf, bh->b_data + boffs, csize);
1297 EXPORT_SYMBOL(fsfilt_ext3_read);
1299 static int fsfilt_ext3_read_record(struct file * file, void *buf,
1300 int size, loff_t *offs)
1303 rc = fsfilt_ext3_read(file->f_dentry->d_inode, buf, size, offs);
1309 int fsfilt_ext3_write_handle(struct inode *inode, void *buf, int bufsize,
1310 loff_t *offs, handle_t *handle)
1312 struct buffer_head *bh = NULL;
1313 loff_t old_size = i_size_read(inode), offset = *offs;
1314 loff_t new_size = i_size_read(inode);
1315 unsigned long block;
1316 int err = 0, blocksize = 1 << inode->i_blkbits, size, boffs;
1318 while (bufsize > 0) {
1322 block = offset >> inode->i_blkbits;
1323 boffs = offset & (blocksize - 1);
1324 size = min(blocksize - boffs, bufsize);
1325 bh = ext3_bread(handle, inode, block, 1, &err);
1327 CERROR("can't read/create block: %d\n", err);
1331 err = ext3_journal_get_write_access(handle, bh);
1333 CERROR("journal_get_write_access() returned error %d\n",
1337 LASSERT(bh->b_data + boffs + size <= bh->b_data + bh->b_size);
1338 memcpy(bh->b_data + boffs, buf, size);
1339 err = ext3_journal_dirty_metadata(handle, bh);
1341 CERROR("journal_dirty_metadata() returned error %d\n",
1345 if (offset + size > new_size)
1346 new_size = offset + size;
1354 /* correct in-core and on-disk sizes */
1355 if (new_size > i_size_read(inode)) {
1357 if (new_size > i_size_read(inode))
1358 i_size_write(inode, new_size);
1359 if (i_size_read(inode) > EXT3_I(inode)->i_disksize)
1360 EXT3_I(inode)->i_disksize = i_size_read(inode);
1361 if (i_size_read(inode) > old_size)
1362 mark_inode_dirty(inode);
1363 cfs_unlock_kernel();
1370 EXPORT_SYMBOL(fsfilt_ext3_write_handle);
1372 static int fsfilt_ext3_write_record(struct file *file, void *buf, int bufsize,
1373 loff_t *offs, int force_sync)
1375 struct inode *inode = file->f_dentry->d_inode;
1377 int err, block_count = 0, blocksize;
1379 /* Determine how many transaction credits are needed */
1380 blocksize = 1 << inode->i_blkbits;
1381 block_count = (*offs & (blocksize - 1)) + bufsize;
1382 block_count = (block_count + blocksize - 1) >> inode->i_blkbits;
1384 handle = ext3_journal_start(inode,
1385 block_count * FSFILT_DATA_TRANS_BLOCKS(inode->i_sb) + 2);
1386 if (IS_ERR(handle)) {
1387 CERROR("can't start transaction for %d blocks (%d bytes)\n",
1388 block_count * FSFILT_DATA_TRANS_BLOCKS(inode->i_sb) + 2, bufsize);
1389 return PTR_ERR(handle);
1392 err = fsfilt_ext3_write_handle(inode, buf, bufsize, offs, handle);
1394 if (!err && force_sync)
1395 handle->h_sync = 1; /* recovery likes this */
1397 ext3_journal_stop(handle);
1402 static int fsfilt_ext3_setup(struct super_block *sb)
1404 #if ((LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,6)) && \
1405 defined(HAVE_QUOTA_SUPPORT)) || defined(S_PDIROPS)
1406 struct ext3_sb_info *sbi = EXT3_SB(sb);
1408 sbi->dx_lock = fsfilt_ext3_dx_lock;
1409 sbi->dx_unlock = fsfilt_ext3_dx_unlock;
1413 CWARN("Enabling PDIROPS\n");
1414 set_opt(sbi->s_mount_opt, PDIROPS);
1415 sb->s_flags |= S_PDIROPS;
1417 if (!EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_DIR_INDEX))
1418 CWARN("filesystem doesn't have dir_index feature enabled\n");
1419 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,6)) && defined(HAVE_QUOTA_SUPPORT)
1420 /* enable journaled quota support */
1421 /* kfreed in ext3_put_super() */
1422 sbi->s_qf_names[USRQUOTA] = kstrdup("lquota.user.reserved", GFP_KERNEL);
1423 if (!sbi->s_qf_names[USRQUOTA])
1425 sbi->s_qf_names[GRPQUOTA] = kstrdup("lquota.group.reserved", GFP_KERNEL);
1426 if (!sbi->s_qf_names[GRPQUOTA]) {
1427 kfree(sbi->s_qf_names[USRQUOTA]);
1428 sbi->s_qf_names[USRQUOTA] = NULL;
1431 sbi->s_jquota_fmt = QFMT_LUSTRE;
1432 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13))
1433 set_opt(sbi->s_mount_opt, QUOTA);
1439 /* If fso is NULL, op is FSFILT operation, otherwise op is number of fso
1440 objects. Logs is number of logfiles to update */
1441 static int fsfilt_ext3_get_op_len(int op, struct fsfilt_objinfo *fso, int logs)
1445 case FSFILT_OP_CREATE:
1446 /* directory leaf, index & indirect & EA*/
1447 return 4 + 3 * logs;
1448 case FSFILT_OP_UNLINK:
1454 struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
1455 int blockpp = 1 << (CFS_PAGE_SHIFT - sb->s_blocksize_bits);
1456 int addrpp = EXT3_ADDR_PER_BLOCK(sb) * blockpp;
1457 for (i = 0; i < op; i++, fso++) {
1458 int nblocks = fso->fso_bufcnt * blockpp;
1459 int ndindirect = min(nblocks, addrpp + 1);
1460 int nindir = nblocks + ndindirect + 1;
1464 return needed + 3 * logs;
1470 #ifdef HAVE_QUOTA_SUPPORT
1471 #define DQINFO_COPY(out, in) \
1473 Q_COPY(out, in, dqi_bgrace); \
1474 Q_COPY(out, in, dqi_igrace); \
1475 Q_COPY(out, in, dqi_flags); \
1476 Q_COPY(out, in, dqi_valid); \
1479 #define DQBLK_COPY(out, in) \
1481 Q_COPY(out, in, dqb_bhardlimit); \
1482 Q_COPY(out, in, dqb_bsoftlimit); \
1483 Q_COPY(out, in, dqb_curspace); \
1484 Q_COPY(out, in, dqb_ihardlimit); \
1485 Q_COPY(out, in, dqb_isoftlimit); \
1486 Q_COPY(out, in, dqb_curinodes); \
1487 Q_COPY(out, in, dqb_btime); \
1488 Q_COPY(out, in, dqb_itime); \
1489 Q_COPY(out, in, dqb_valid); \
1492 static int fsfilt_ext3_quotactl(struct super_block *sb,
1493 struct obd_quotactl *oqc)
1495 int i, rc = 0, error = 0;
1496 const struct quotactl_ops *qcop;
1497 struct if_dqinfo *info;
1498 struct if_dqblk *dqblk;
1504 OBD_ALLOC_PTR(info);
1507 OBD_ALLOC_PTR(dqblk);
1513 DQINFO_COPY(info, &oqc->qc_dqinfo);
1514 DQBLK_COPY(dqblk, &oqc->qc_dqblk);
1517 if (oqc->qc_cmd == Q_QUOTAON || oqc->qc_cmd == Q_QUOTAOFF) {
1518 for (i = 0; i < MAXQUOTAS; i++) {
1519 if (!Q_TYPESET(oqc, i))
1522 if (oqc->qc_cmd == Q_QUOTAON) {
1523 char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1525 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1527 rc = ll_quota_on(sb, i, QFMT_LUSTRE,
1529 } else if (oqc->qc_cmd == Q_QUOTAOFF) {
1530 rc = ll_quota_off(sb, i, 0);
1538 GOTO(out, rc ?: error);
1541 switch (oqc->qc_cmd) {
1544 if (!qcop->get_info)
1545 GOTO(out, rc = -ENOSYS);
1546 rc = qcop->get_info(sb, oqc->qc_type, info);
1550 if (!qcop->set_dqblk)
1551 GOTO(out, rc = -ENOSYS);
1552 rc = qcop->set_dqblk(sb, oqc->qc_type, oqc->qc_id, dqblk);
1556 if (!qcop->get_dqblk)
1557 GOTO(out, rc = -ENOSYS);
1558 rc = qcop->get_dqblk(sb, oqc->qc_type, oqc->qc_id, dqblk);
1560 dqblk->dqb_valid = QIF_LIMITS | QIF_USAGE;
1563 if (!sb->s_qcop->quota_sync)
1564 GOTO(out, rc = -ENOSYS);
1565 qcop->quota_sync(sb, oqc->qc_type);
1568 CDEBUG(D_WARNING, "invalidating operational quota files\n");
1569 for (i = 0; i < MAXQUOTAS; i++) {
1571 char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1573 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1575 if (!Q_TYPESET(oqc, i))
1578 fp = filp_open(name[i], O_CREAT | O_TRUNC | O_RDWR, 0644);
1581 CERROR("error invalidating operational quota file"
1582 " %s (rc:%d)\n", name[i], rc);
1590 CERROR("unsupported quotactl command: %d\n", oqc->qc_cmd);
1594 DQINFO_COPY(&oqc->qc_dqinfo, info);
1595 DQBLK_COPY(&oqc->qc_dqblk, dqblk);
1598 OBD_FREE_PTR(dqblk);
1601 CDEBUG(D_QUOTA, "quotactl command %#x, id %u, type %u "
1603 oqc->qc_cmd, oqc->qc_id, oqc->qc_type, rc);
1608 cfs_hlist_node_t dqb_hash; /** quotacheck hash */
1609 cfs_list_t dqb_list; /** in list also */
1610 qid_t dqb_id; /** uid/gid */
1611 short dqb_type; /** USRQUOTA/GRPQUOTA */
1612 qsize_t dqb_bhardlimit; /** block hard limit */
1613 qsize_t dqb_bsoftlimit; /** block soft limit */
1614 qsize_t dqb_curspace; /** current space */
1615 qsize_t dqb_ihardlimit; /** inode hard limit */
1616 qsize_t dqb_isoftlimit; /** inode soft limit */
1617 qsize_t dqb_curinodes; /** current inodes */
1618 obd_time dqb_btime; /** block grace time */
1619 obd_time dqb_itime; /** inode grace time */
1620 __u32 dqb_valid; /** flag for above fields */
1623 static inline unsigned int chkquot_hash(qid_t id, int type)
1624 __attribute__((__const__));
1626 static inline unsigned int chkquot_hash(qid_t id, int type)
1628 return (id * (MAXQUOTAS - type)) % NR_DQHASH;
1631 static inline struct chk_dqblk *
1632 find_chkquot(cfs_hlist_head_t *head, qid_t id, int type)
1634 cfs_hlist_node_t *node;
1635 struct chk_dqblk *cdqb;
1637 cfs_hlist_for_each(node, head) {
1638 cdqb = cfs_hlist_entry(node, struct chk_dqblk, dqb_hash);
1639 if (cdqb->dqb_id == id && cdqb->dqb_type == type)
1646 static struct chk_dqblk *alloc_chkquot(qid_t id, int type)
1648 struct chk_dqblk *cdqb;
1650 OBD_ALLOC_PTR(cdqb);
1652 CFS_INIT_HLIST_NODE(&cdqb->dqb_hash);
1653 CFS_INIT_LIST_HEAD(&cdqb->dqb_list);
1655 cdqb->dqb_type = type;
1661 static struct chk_dqblk *
1662 cqget(struct super_block *sb, cfs_hlist_head_t *hash,
1663 cfs_list_t *list, qid_t id, int type, int first_check)
1665 cfs_hlist_head_t *head = hash + chkquot_hash(id, type);
1666 struct if_dqblk dqb;
1667 struct chk_dqblk *cdqb;
1670 cdqb = find_chkquot(head, id, type);
1674 cdqb = alloc_chkquot(id, type);
1679 rc = sb->s_qcop->get_dqblk(sb, type, id, &dqb);
1681 CERROR("get_dqblk of id %u, type %d failed: %d\n",
1684 DQBLK_COPY(cdqb, &dqb);
1685 cdqb->dqb_curspace = 0;
1686 cdqb->dqb_curinodes = 0;
1690 cfs_hlist_add_head(&cdqb->dqb_hash, head);
1691 cfs_list_add_tail(&cdqb->dqb_list, list);
1696 static inline int quota_onoff(struct super_block *sb, int cmd, int type, int qfmt)
1698 struct obd_quotactl *oqctl;
1701 OBD_ALLOC_PTR(oqctl);
1705 oqctl->qc_cmd = cmd;
1706 oqctl->qc_id = qfmt;
1707 oqctl->qc_type = type;
1708 rc = fsfilt_ext3_quotactl(sb, oqctl);
1710 OBD_FREE_PTR(oqctl);
1714 static inline int read_old_dqinfo(struct super_block *sb, int type,
1715 struct if_dqinfo *dqinfo)
1717 struct obd_quotactl *oqctl;
1721 OBD_ALLOC_PTR(oqctl);
1725 oqctl->qc_cmd = Q_GETINFO;
1726 oqctl->qc_type = type;
1727 rc = fsfilt_ext3_quotactl(sb, oqctl);
1729 ((struct obd_dqinfo *)dqinfo)[type] = oqctl->qc_dqinfo;
1731 OBD_FREE_PTR(oqctl);
1735 #ifndef HAVE_EXT4_LDISKFS
1736 static inline struct ext3_group_desc *
1737 get_group_desc(struct super_block *sb, int group, struct buffer_head **bh)
1739 unsigned long desc_block, desc;
1740 struct ext3_group_desc *gdp;
1742 desc_block = group / EXT3_DESC_PER_BLOCK(sb);
1743 desc = group % EXT3_DESC_PER_BLOCK(sb);
1744 gdp = (struct ext3_group_desc *)
1745 EXT3_SB(sb)->s_group_desc[desc_block]->b_data;
1750 static inline struct buffer_head *
1751 ext3_read_inode_bitmap(struct super_block *sb, unsigned long group)
1753 struct ext3_group_desc *desc;
1754 struct buffer_head *bh;
1756 desc = get_group_desc(sb, group, NULL);
1757 bh = sb_bread(sb, ext3_inode_bitmap(sb, desc));
1761 static __u32 ext3_itable_unused_count(struct super_block *sb,
1762 struct ext3_group_desc *bg) {
1763 return le16_to_cpu(bg->bg_itable_unused);
1766 #define get_group_desc ext3_get_group_desc
1770 cfs_hlist_head_t qckt_hash[NR_DQHASH]; /* quotacheck hash */
1771 cfs_list_t qckt_list; /* quotacheck list */
1772 int qckt_first_check[MAXQUOTAS]; /* 1 if no old quotafile */
1773 struct if_dqinfo qckt_dqinfo[MAXQUOTAS]; /* old dqinfo */
1776 static int add_inode_quota(struct inode *inode, struct qchk_ctxt *qctxt,
1777 struct obd_quotactl *oqc)
1779 struct chk_dqblk *cdqb[MAXQUOTAS] = { NULL, };
1781 qid_t qid[MAXQUOTAS];
1787 qid[USRQUOTA] = inode->i_uid;
1788 qid[GRPQUOTA] = inode->i_gid;
1790 if (S_ISDIR(inode->i_mode) ||
1791 S_ISREG(inode->i_mode) ||
1792 S_ISLNK(inode->i_mode))
1793 size = inode_get_bytes(inode);
1795 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
1796 if (!Q_TYPESET(oqc, cnt))
1799 cdqb[cnt] = cqget(inode->i_sb, qctxt->qckt_hash,
1800 &qctxt->qckt_list, qid[cnt], cnt,
1801 qctxt->qckt_first_check[cnt]);
1807 cdqb[cnt]->dqb_curspace += size;
1808 cdqb[cnt]->dqb_curinodes++;
1812 for (i = 0; i < cnt; i++) {
1813 if (!Q_TYPESET(oqc, i))
1816 cdqb[i]->dqb_curspace -= size;
1817 cdqb[i]->dqb_curinodes--;
1824 /* write dqinfo struct in a new quota file */
1825 static int v3_write_dqinfo(struct file *f, int type, struct if_dqinfo *info)
1827 struct v2_disk_dqinfo dqinfo;
1828 __u32 blocks = V2_DQTREEOFF + 1;
1829 loff_t offset = V2_DQINFOOFF;
1832 dqinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace);
1833 dqinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace);
1834 dqinfo.dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK &
1837 dqinfo.dqi_bgrace = cpu_to_le32(MAX_DQ_TIME);
1838 dqinfo.dqi_igrace = cpu_to_le32(MAX_IQ_TIME);
1839 dqinfo.dqi_flags = 0;
1842 dqinfo.dqi_blocks = cpu_to_le32(blocks);
1843 dqinfo.dqi_free_blk = 0;
1844 dqinfo.dqi_free_entry = 0;
1846 return cfs_user_write(f, (char *)&dqinfo, sizeof(dqinfo), &offset);
1849 static int v3_write_dqheader(struct file *f, int type)
1851 static const __u32 quota_magics[] = V2_INITQMAGICS;
1852 static const __u32 quota_versions[] = LUSTRE_INITQVERSIONS_V2;
1853 struct v2_disk_dqheader dqhead;
1856 CLASSERT(ARRAY_SIZE(quota_magics) == ARRAY_SIZE(quota_versions));
1857 LASSERT(0 <= type && type < ARRAY_SIZE(quota_magics));
1859 dqhead.dqh_magic = cpu_to_le32(quota_magics[type]);
1860 dqhead.dqh_version = cpu_to_le32(quota_versions[type]);
1862 return cfs_user_write(f, (char *)&dqhead, sizeof(dqhead), &offset);
1865 static int create_new_quota_files(struct qchk_ctxt *qctxt,
1866 struct obd_quotactl *oqc)
1871 for (i = 0; i < MAXQUOTAS; i++) {
1872 struct if_dqinfo *info = qctxt->qckt_first_check[i]?
1873 NULL : &qctxt->qckt_dqinfo[i];
1875 const char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1877 if (!Q_TYPESET(oqc, i))
1880 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1882 file = filp_open(name[i], O_RDWR | O_CREAT | O_TRUNC, 0644);
1885 CERROR("can't create %s file: rc = %d\n",
1890 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1891 CERROR("file %s is not regular", name[i]);
1892 filp_close(file, 0);
1893 GOTO(out, rc = -EINVAL);
1896 ll_vfs_dq_drop(file->f_dentry->d_inode);
1898 rc = v3_write_dqheader(file, i);
1900 filp_close(file, 0);
1904 rc = v3_write_dqinfo(file, i, info);
1905 filp_close(file, 0);
1915 static int commit_chkquot(struct super_block *sb, struct qchk_ctxt *qctxt,
1916 struct chk_dqblk *cdqb)
1918 struct obd_quotactl *oqc;
1927 now = cfs_time_current_sec();
1929 if (cdqb->dqb_bsoftlimit &&
1930 toqb(cdqb->dqb_curspace) >= cdqb->dqb_bsoftlimit &&
1933 now + qctxt->qckt_dqinfo[cdqb->dqb_type].dqi_bgrace;
1935 if (cdqb->dqb_isoftlimit &&
1936 cdqb->dqb_curinodes >= cdqb->dqb_isoftlimit &&
1939 now + qctxt->qckt_dqinfo[cdqb->dqb_type].dqi_igrace;
1941 cdqb->dqb_valid = QIF_ALL;
1943 oqc->qc_cmd = Q_SETQUOTA;
1944 oqc->qc_type = cdqb->dqb_type;
1945 oqc->qc_id = cdqb->dqb_id;
1946 DQBLK_COPY(&oqc->qc_dqblk, cdqb);
1948 rc = fsfilt_ext3_quotactl(sb, oqc);
1953 static int prune_chkquots(struct super_block *sb,
1954 struct qchk_ctxt *qctxt, int error)
1956 struct chk_dqblk *cdqb, *tmp;
1959 cfs_list_for_each_entry_safe(cdqb, tmp, &qctxt->qckt_list, dqb_list) {
1961 rc = commit_chkquot(sb, qctxt, cdqb);
1965 cfs_hlist_del_init(&cdqb->dqb_hash);
1966 cfs_list_del(&cdqb->dqb_list);
1973 #ifndef EXT3_FEATURE_RO_COMPAT_GDT_CSUM
1974 #define EXT3_FEATURE_RO_COMPAT_GDT_CSUM 0x0010
1977 static int fsfilt_ext3_quotacheck(struct super_block *sb,
1978 struct obd_quotactl *oqc)
1980 struct ext3_sb_info *sbi = EXT3_SB(sb);
1981 int i, group, uninit_feat = 0;
1982 struct qchk_ctxt *qctxt;
1983 struct buffer_head *bitmap_bh = NULL;
1984 unsigned long ino, inode_inuse;
1985 struct inode *inode;
1989 /* turn on quota and read dqinfo if existed */
1990 OBD_ALLOC_PTR(qctxt);
1992 oqc->qc_stat = -ENOMEM;
1996 for (i = 0; i < NR_DQHASH; i++)
1997 CFS_INIT_HLIST_HEAD(&qctxt->qckt_hash[i]);
1998 CFS_INIT_LIST_HEAD(&qctxt->qckt_list);
2000 for (i = 0; i < MAXQUOTAS; i++) {
2001 if (!Q_TYPESET(oqc, i))
2004 rc = quota_onoff(sb, Q_QUOTAON, i, oqc->qc_id);
2005 if (!rc || rc == -EBUSY) {
2006 rc = read_old_dqinfo(sb, i, qctxt->qckt_dqinfo);
2009 } else if (rc == -ENOENT || rc == -EINVAL || rc == -EEXIST) {
2010 qctxt->qckt_first_check[i] = 1;
2015 if (EXT3_HAS_RO_COMPAT_FEATURE(sb, EXT3_FEATURE_RO_COMPAT_GDT_CSUM))
2016 /* This filesystem supports the uninit group feature */
2019 /* number of inodes that have been allocated */
2020 inode_inuse = sbi->s_inodes_per_group * sbi->s_groups_count -
2021 percpu_counter_sum(&sbi->s_freeinodes_counter);
2023 /* check quota and update in hash */
2024 for (group = 0; group < sbi->s_groups_count && inode_inuse > 0;
2026 unsigned long used_count = sbi->s_inodes_per_group;
2029 struct ext3_group_desc *desc;
2030 desc = get_group_desc(sb, group, NULL);
2034 /* we don't really need to take the group lock here,
2035 * but it may be useful if one day we support online
2037 #ifdef HAVE_EXT4_LDISKFS
2038 ext4_lock_group(sb, group);
2040 spin_lock(sb_bgl_lock(sbi, group));
2042 if (desc->bg_flags & cpu_to_le16(EXT3_BG_INODE_UNINIT)) {
2043 /* no inode in use in this group, just skip it */
2044 #ifdef HAVE_EXT4_LDISKFS
2045 ext3_unlock_group(sb, group);
2047 spin_unlock(sb_bgl_lock(sbi, group));
2052 used_count -= ext3_itable_unused_count(sb, desc);
2053 #ifdef HAVE_EXT4_LDISKFS
2054 ext3_unlock_group(sb, group);
2056 spin_unlock(sb_bgl_lock(sbi, group));
2060 ino = group * sbi->s_inodes_per_group + 1;
2061 bitmap_bh = ext3_read_inode_bitmap(sb, group);
2063 CERROR("%s: ext3_read_inode_bitmap group %d failed\n",
2069 while (i < used_count &&
2070 (i = ext3_find_next_bit(bitmap_bh->b_data,
2071 used_count, i)) < used_count) {
2074 ino = i + group * sbi->s_inodes_per_group;
2075 if (ino < sbi->s_first_ino)
2077 #if defined(HAVE_EXT4_LDISKFS) || !defined(HAVE_READ_INODE_IN_SBOPS)
2078 inode = ext3_iget(sb, ino);
2080 inode = iget(sb, ino);
2082 if (!inode || IS_ERR(inode))
2085 rc = add_inode_quota(inode, qctxt, oqc);
2095 /* read old quota limits from old quota file. (only for the user
2096 * has limits but hasn't file) */
2097 #ifdef HAVE_QUOTA_SUPPORT
2098 for (i = 0; i < MAXQUOTAS; i++) {
2100 struct dquot_id *dqid, *tmp;
2102 if (!Q_TYPESET(oqc, i))
2105 if (qctxt->qckt_first_check[i])
2109 LASSERT(sb_dqopt(sb)->files[i] != NULL);
2110 CFS_INIT_LIST_HEAD(&id_list);
2111 #ifndef KERNEL_SUPPORTS_QUOTA_READ
2112 rc = lustre_get_qids(sb_dqopt(sb)->files[i], NULL, i, &id_list);
2114 rc = lustre_get_qids(NULL, sb_dqopt(sb)->files[i], i, &id_list);
2117 CERROR("read old limits failed. (rc:%d)\n", rc);
2119 cfs_list_for_each_entry_safe(dqid, tmp, &id_list, di_link) {
2120 cfs_list_del_init(&dqid->di_link);
2123 cqget(sb, qctxt->qckt_hash, &qctxt->qckt_list,
2125 qctxt->qckt_first_check[i]);
2130 /* turn off quota cause we are to dump chk_dqblk to files */
2131 quota_onoff(sb, Q_QUOTAOFF, oqc->qc_type, oqc->qc_id);
2133 rc = create_new_quota_files(qctxt, oqc);
2137 /* we use vfs functions to set dqblk, so turn quota on */
2138 rc = quota_onoff(sb, Q_QUOTAON, oqc->qc_type, oqc->qc_id);
2140 /* dump and free chk_dqblk */
2141 rc = prune_chkquots(sb, qctxt, rc);
2142 OBD_FREE_PTR(qctxt);
2144 /* turn off quota, `lfs quotacheck` will turn on when all
2145 * nodes quotacheck finish. */
2146 quota_onoff(sb, Q_QUOTAOFF, oqc->qc_type, oqc->qc_id);
2150 CERROR("quotacheck failed: rc = %d\n", rc);
2155 static int fsfilt_ext3_quotainfo(struct lustre_quota_info *lqi, int type,
2161 if (lqi->qi_files[type] == NULL) {
2162 CERROR("operate qinfo before it's enabled!\n");
2168 rc = lustre_check_quota_file(lqi, type);
2171 rc = lustre_read_quota_info(lqi, type);
2174 rc = lustre_write_quota_info(lqi, type);
2176 case QFILE_INIT_INFO:
2177 rc = lustre_init_quota_info(lqi, type);
2181 CERROR("quota CONVERT command is not supported\n");
2185 CERROR("Unsupported admin quota file cmd %d\n"
2186 "Are lquota.ko and fsfilt_ldiskfs.ko modules in sync?\n",
2193 static int fsfilt_ext3_qids(struct file *file, struct inode *inode, int type,
2196 return lustre_get_qids(file, inode, type, list);
2199 static int fsfilt_ext3_dquot(struct lustre_dquot *dquot, int cmd)
2204 if (dquot->dq_info->qi_files[dquot->dq_type] == NULL) {
2205 CERROR("operate dquot before it's enabled!\n");
2210 case QFILE_RD_DQUOT:
2211 rc = lustre_read_dquot(dquot);
2213 case QFILE_WR_DQUOT:
2214 if (dquot->dq_dqb.dqb_ihardlimit ||
2215 dquot->dq_dqb.dqb_isoftlimit ||
2216 dquot->dq_dqb.dqb_bhardlimit ||
2217 dquot->dq_dqb.dqb_bsoftlimit)
2218 cfs_clear_bit(DQ_FAKE_B, &dquot->dq_flags);
2220 cfs_set_bit(DQ_FAKE_B, &dquot->dq_flags);
2222 rc = lustre_commit_dquot(dquot);
2227 CERROR("Unsupported admin quota file cmd %d\n", cmd);
2234 static int fsfilt_ext3_get_mblk(struct super_block *sb, int *count,
2235 struct inode *inode, int frags)
2237 #ifdef EXT3_EXT_HAS_NO_TREE
2238 struct ext3_ext_base *base = inode;
2240 struct ext3_extents_tree tree;
2241 struct ext3_ext_base *base = &tree;
2243 ext3_init_tree_desc(base, inode);
2245 /* for an ost_write request, it needs <#fragments> * <tree depth + 1>
2246 * metablocks at maxium b=16542 */
2247 *count = frags * (EXT_DEPTH(base) + 1) * EXT3_BLOCK_SIZE(sb);
2253 lvfs_sbdev_type fsfilt_ext3_journal_sbdev(struct super_block *sb)
2255 return (EXT3_SB(sb)->journal_bdev);
2257 EXPORT_SYMBOL(fsfilt_ext3_journal_sbdev);
2259 ssize_t lustre_read_quota(struct file *f, struct inode *inode, int type,
2260 char *buf, int count, loff_t pos)
2266 CERROR("lustre_read_quota failed for no quota file!\n");
2267 libcfs_debug_dumpstack(NULL);
2271 /* Support for both adm and op quota files must be provided */
2273 rc = fsfilt_ext3_read_record(f, buf, count, &p);
2274 rc = rc < 0 ? rc : p - pos;
2276 struct super_block *sb = inode->i_sb;
2277 rc = sb->s_op->quota_read(sb, type, buf, count, pos);
2282 ssize_t lustre_write_quota(struct file *f, char *buf, int count, loff_t pos)
2287 /* Only adm quota files are supported, op updates are handled by vfs */
2288 rc = fsfilt_ext3_write_record(f, buf, count, &p, 0);
2289 rc = rc < 0 ? rc : p - pos;
2294 void *lustre_quota_journal_start(struct inode *inode, int delete)
2297 unsigned block_count;
2300 /* each indirect block (+4) may become free, attaching to the
2301 * header list of free blocks (+1); the data block (+1) may
2302 * become a free block (+0) or a block with free dqentries (+0) */
2303 block_count = (4 + 1) + 1;
2304 handle = ext3_journal_start(inode,
2305 block_count*FSFILT_DATA_TRANS_BLOCKS(inode->i_sb)+2);
2307 /* indirect blocks are touched (+4), each causes file expansion (+0) or
2308 * freeblk reusage with a header update (+1); dqentry is either reused
2309 * causing update of the entry block (+1), prev (+1) and next (+1) or
2310 * a new block allocation (+1) with a header update (+1) */
2311 block_count = (4 + 1) + 3;
2312 handle = ext3_journal_start(inode,
2313 block_count*FSFILT_DATA_TRANS_BLOCKS(inode->i_sb)+2);
2320 void lustre_quota_journal_stop(void *handle)
2322 ext3_journal_stop((handle_t *)handle);
2325 static int ll_decode_fh_accept(void *context, struct dentry *de)
2330 #ifdef HAVE_EXPORTFS_DECODE_FH
2331 # define ll_exportfs_decode_fh(mnt, fid, len, type, acceptable, context) \
2332 exportfs_decode_fh(mnt, (struct fid*)(fid), len, type, \
2333 acceptable, context)
2335 # define ll_exportfs_decode_fh(mnt, fid, len, type, acceptable, context) \
2336 export_op_default.decode_fh((mnt)->mnt_sb, &(fid)->ino, len, \
2337 type, acceptable, context)
2338 # define FILEID_INO32_GEN 1
2339 extern struct export_operations export_op_default;
2342 struct dentry *fsfilt_ext3_fid2dentry(struct vfsmount *mnt,
2343 struct fsfilt_fid *fid, int ignore_gen)
2345 struct inode *inode;
2346 struct dentry *result;
2348 result = ll_exportfs_decode_fh(mnt, fid, 2, FILEID_INO32_GEN,
2349 ll_decode_fh_accept, NULL);
2350 if (IS_ERR(result)) {
2351 CDEBUG(D_DENTRY, "%s of %u/%u failed %ld\n", __func__,
2352 fid->ino, fid->gen, PTR_ERR(result));
2356 CDEBUG(D_DENTRY, "%s of %u/%u succeeded\n", __func__,
2357 fid->ino, fid->gen);
2358 inode = result->d_inode;
2362 if (inode->i_nlink == 0 &&
2363 inode->i_mode == 0 && LTIME_S(inode->i_ctime) == 0) {
2364 LCONSOLE_WARN("Found inode with zero nlink, mode and"
2365 " ctime -- this may indicate disk "
2366 "corruption (inode: %lu, link: %lu, "
2367 "count: %d)\n", inode->i_ino,
2368 (unsigned long)inode->i_nlink,
2369 atomic_read(&inode->i_count));
2372 if (fid->gen && inode->i_generation != fid->gen) {
2373 /* we didn't find the right inode.. */
2374 CDEBUG(D_INODE, "found wrong generation: inode %lu, link: %lu, "
2375 "count: %d, generation %u/%u\n",
2376 inode->i_ino, (unsigned long)inode->i_nlink,
2377 atomic_read(&inode->i_count), inode->i_generation,
2385 return ERR_PTR(-ENOENT);
2388 static struct fsfilt_operations fsfilt_ext3_ops = {
2390 .fs_owner = THIS_MODULE,
2391 .fs_getlabel = fsfilt_ext3_get_label,
2392 .fs_setlabel = fsfilt_ext3_set_label,
2393 .fs_uuid = fsfilt_ext3_uuid,
2394 .fs_start = fsfilt_ext3_start,
2395 .fs_brw_start = fsfilt_ext3_brw_start,
2396 .fs_extend = fsfilt_ext3_extend,
2397 .fs_commit = fsfilt_ext3_commit,
2398 .fs_commit_async = fsfilt_ext3_commit_async,
2399 .fs_commit_wait = fsfilt_ext3_commit_wait,
2400 .fs_setattr = fsfilt_ext3_setattr,
2401 .fs_iocontrol = fsfilt_ext3_iocontrol,
2402 .fs_set_md = fsfilt_ext3_set_md,
2403 .fs_get_md = fsfilt_ext3_get_md,
2404 .fs_readpage = fsfilt_ext3_readpage,
2405 .fs_add_journal_cb = fsfilt_ext3_add_journal_cb,
2406 .fs_statfs = fsfilt_ext3_statfs,
2407 .fs_sync = fsfilt_ext3_sync,
2408 .fs_map_inode_pages = fsfilt_ext3_map_inode_pages,
2409 .fs_write_record = fsfilt_ext3_write_record,
2410 .fs_read_record = fsfilt_ext3_read_record,
2411 .fs_setup = fsfilt_ext3_setup,
2412 .fs_send_bio = fsfilt_ext3_send_bio,
2413 .fs_get_op_len = fsfilt_ext3_get_op_len,
2414 #ifdef HAVE_DISK_INODE_VERSION
2415 .fs_get_version = fsfilt_ext3_get_version,
2416 .fs_set_version = fsfilt_ext3_set_version,
2418 #ifdef HAVE_QUOTA_SUPPORT
2419 .fs_quotactl = fsfilt_ext3_quotactl,
2420 .fs_quotacheck = fsfilt_ext3_quotacheck,
2421 .fs_quotainfo = fsfilt_ext3_quotainfo,
2422 .fs_qids = fsfilt_ext3_qids,
2423 .fs_dquot = fsfilt_ext3_dquot,
2424 .fs_get_mblk = fsfilt_ext3_get_mblk,
2426 .fs_journal_sbdev = fsfilt_ext3_journal_sbdev,
2427 .fs_fid2dentry = fsfilt_ext3_fid2dentry,
2430 static int __init fsfilt_ext3_init(void)
2434 fcb_cache = cfs_mem_cache_create("fsfilt_ext3_fcb",
2435 sizeof(struct fsfilt_cb_data), 0, 0);
2437 CERROR("error allocating fsfilt journal callback cache\n");
2438 GOTO(out, rc = -ENOMEM);
2441 rc = fsfilt_register_ops(&fsfilt_ext3_ops);
2444 int err = cfs_mem_cache_destroy(fcb_cache);
2445 LASSERTF(err == 0, "error destroying new cache: rc %d\n", err);
2451 static void __exit fsfilt_ext3_exit(void)
2455 fsfilt_unregister_ops(&fsfilt_ext3_ops);
2456 rc = cfs_mem_cache_destroy(fcb_cache);
2457 LASSERTF(rc == 0, "couldn't destroy fcb_cache slab\n");
2460 module_init(fsfilt_ext3_init);
2461 module_exit(fsfilt_ext3_exit);
2463 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2464 MODULE_DESCRIPTION("Lustre ext3 Filesystem Helper v0.1");
2465 MODULE_LICENSE("GPL");