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.
32 * Copyright (c) 2011 Whamcloud, Inc.
36 * Copyright (c) 2011 Whamcloud, Inc.
39 * This file is part of Lustre, http://www.lustre.org/
40 * Lustre is a trademark of Sun Microsystems, Inc.
42 * lustre/lvfs/fsfilt_ext3.c
44 * Author: Andreas Dilger <adilger@clusterfs.com>
47 #define DEBUG_SUBSYSTEM S_FILTER
49 #include <linux/init.h>
50 #include <linux/module.h>
52 #include <linux/slab.h>
53 #include <linux/pagemap.h>
54 #include <linux/quotaops.h>
55 #ifdef HAVE_LINUX_EXPORTFS_H
56 #include <linux/exportfs.h>
58 #ifdef HAVE_EXT4_LDISKFS
59 #include <ext4/ext4.h>
60 #include <ext4/ext4_jbd2.h>
62 #include <linux/jbd.h>
63 #include <linux/ext3_fs.h>
64 #include <linux/ext3_jbd.h>
66 #include <linux/version.h>
67 #include <linux/bitops.h>
68 #include <linux/quota.h>
70 # include <linux/quotaio_v2.h>
71 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
72 # include <quota/quotaio_v2.h>
73 # include <quota/quota_tree.h>
74 # define V2_DQTREEOFF QT_TREEOFF
75 #elif defined(HAVE_FS_QUOTAIO_V1_H)
76 # include <quotaio_v2.h>
77 # include <quota_tree.h>
78 # define V2_DQTREEOFF QT_TREEOFF
79 # define V2_INITQVERSIONS_R1 V2_INITQVERSIONS
83 #define QFMT_LUSTRE QFMT_VFS_V1
85 #define QFMT_LUSTRE QFMT_VFS_V0
88 #if defined(HAVE_EXT3_XATTR_H)
89 # include <ext3/xattr.h>
90 #elif !defined(EXT3_XATTR_INDEX_TRUSTED)
91 /* ext3 xattr.h not available in rh style kernel-devel rpm */
92 /* CHAOS kernel-devel package will not include fs/ldiskfs/xattr.h */
93 # define EXT3_XATTR_INDEX_TRUSTED 4
94 extern int ext3_xattr_get(struct inode *, int, const char *, void *, size_t);
95 extern int ext3_xattr_set_handle(handle_t *, struct inode *, int, const char *, const void *, size_t, int);
98 #include <libcfs/libcfs.h>
99 #include <lustre_fsfilt.h>
101 #include <lustre_quota.h>
102 #include <linux/lustre_compat25.h>
103 #include <linux/lprocfs_status.h>
105 #ifdef HAVE_EXT4_LDISKFS
106 #include <ext4/ext4_extents.h>
108 #include <linux/ext3_extents.h>
111 #include "lustre_quota_fmt.h"
113 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
114 #define FSFILT_DATA_TRANS_BLOCKS(sb) EXT3_DATA_TRANS_BLOCKS
115 #define FSFILT_DELETE_TRANS_BLOCKS(sb) EXT3_DELETE_TRANS_BLOCKS
117 #define FSFILT_DATA_TRANS_BLOCKS(sb) EXT3_DATA_TRANS_BLOCKS(sb)
118 #define FSFILT_DELETE_TRANS_BLOCKS(sb) EXT3_DELETE_TRANS_BLOCKS(sb)
121 /* for kernels 2.6.18 and later */
122 #define FSFILT_SINGLEDATA_TRANS_BLOCKS(sb) EXT3_SINGLEDATA_TRANS_BLOCKS(sb)
124 #define fsfilt_ext3_ext_insert_extent(handle, inode, path, newext, flag) \
125 ext3_ext_insert_extent(handle, inode, path, newext, flag)
127 #define ext3_mb_discard_inode_preallocations(inode) \
128 ext3_discard_preallocations(inode)
130 #ifdef HAVE_EXT4_LDISKFS
131 #define fsfilt_log_start_commit(journal, tid) jbd2_log_start_commit(journal, tid)
132 #define fsfilt_log_wait_commit(journal, tid) jbd2_log_wait_commit(journal, tid)
134 #define fsfilt_log_start_commit(journal, tid) log_start_commit(journal, tid)
135 #define fsfilt_log_wait_commit(journal, tid) log_wait_commit(journal, tid)
136 #define ext_pblock(ex) le32_to_cpu((ex)->ee_start)
137 #define ext3_ext_store_pblock(ex, pblock) ((ex)->ee_start = cpu_to_le32(pblock))
138 #define ext3_inode_bitmap(sb,desc) le32_to_cpu((desc)->bg_inode_bitmap)
141 #ifdef HAVE_EXT4_JOURNAL_CALLBACK_ADD
142 # define journal_callback ext4_journal_cb_entry
143 # define fsfilt_journal_callback_set(handle, func, jcb) \
144 ext4_journal_callback_add(handle, func, jcb)
145 #elif defined(HAVE_JBD2_JOURNAL_CALLBACK_SET)
146 # define fsfilt_journal_callback_set(handle, func, jcb) \
147 jbd2_journal_callback_set(handle, func, jcb)
148 #elif defined(HAVE_JOURNAL_CALLBACK_SET)
149 # define fsfilt_journal_callback_set(handle, func, jcb) \
150 journal_callback_set(handle, func, jcb)
152 # error missing journal commit callback
153 #endif /* HAVE_EXT4_JOURNAL_CALLBACK_ADD */
155 static cfs_mem_cache_t *fcb_cache;
157 struct fsfilt_cb_data {
158 struct journal_callback cb_jcb; /* jbd private data - MUST BE FIRST */
159 fsfilt_cb_t cb_func; /* MDS/OBD completion function */
160 struct obd_device *cb_obd; /* MDS/OBD completion device */
161 __u64 cb_last_rcvd; /* MDS/OST last committed operation */
162 void *cb_data; /* MDS/OST completion function data */
165 #ifndef ext3_find_next_bit
166 #define ext3_find_next_bit ext2_find_next_bit
169 #ifndef ext2_find_next_bit
170 #ifdef __LITTLE_ENDIAN
171 #define ext2_find_next_bit(addr, size, off) find_next_bit((unsigned long *)(addr), (size), (off))
173 error "Need implementation of find_next_bit on big-endian systems"
174 #endif /* __LITTLE_ENDIAN */
175 #endif /* !ext2_find_next_le_bit */
177 static char *fsfilt_ext3_get_label(struct super_block *sb)
179 return EXT3_SB(sb)->s_es->s_volume_name;
182 static int fsfilt_ext3_set_label(struct super_block *sb, char *label)
184 /* see e.g. fsfilt_ext3_write_record() */
189 journal = EXT3_SB(sb)->s_journal;
190 handle = ext3_journal_start_sb(sb, 1);
191 if (IS_ERR(handle)) {
192 CERROR("can't start transaction\n");
193 return(PTR_ERR(handle));
196 err = ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh);
200 memcpy(EXT3_SB(sb)->s_es->s_volume_name, label,
201 sizeof(EXT3_SB(sb)->s_es->s_volume_name));
203 err = ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
206 ext3_journal_stop(handle);
211 static char *fsfilt_ext3_uuid(struct super_block *sb)
213 return EXT3_SB(sb)->s_es->s_uuid;
216 #ifdef HAVE_DISK_INODE_VERSION
218 static __u64 get_i_version(struct inode *inode)
220 return EXT3_I(inode)->i_fs_version;
223 static void set_i_version(struct inode *inode, __u64 new_version)
225 (EXT3_I(inode))->i_fs_version = new_version;
229 * Get the 64-bit version for an inode.
231 static __u64 fsfilt_ext3_get_version(struct inode *inode)
233 CDEBUG(D_INFO, "Get version "LPX64" for inode %lu\n",
234 get_i_version(inode), inode->i_ino);
235 return get_i_version(inode);
239 * Set the 64-bit version and return the old version.
241 static __u64 fsfilt_ext3_set_version(struct inode *inode, __u64 new_version)
243 __u64 old_version = get_i_version(inode);
245 CDEBUG(D_INFO, "Set version "LPX64" (old "LPX64") for inode %lu\n",
246 new_version, old_version, inode->i_ino);
247 set_i_version(inode, new_version);
248 /* version is set after all inode operations are finished, so we should
249 * mark it dirty here */
250 inode->i_sb->s_op->dirty_inode(inode);
257 * We don't currently need any additional blocks for rmdir and
258 * unlink transactions because we are storing the OST oa_id inside
259 * the inode (which we will be changing anyways as part of this
262 static void *fsfilt_ext3_start(struct inode *inode, int op, void *desc_private,
265 /* For updates to the last received file */
266 int nblocks = FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb);
270 if (current->journal_info) {
271 CDEBUG(D_INODE, "increasing refcount on %p\n",
272 current->journal_info);
277 case FSFILT_OP_RMDIR:
278 case FSFILT_OP_UNLINK:
279 /* delete one file + create/update logs for each stripe */
280 nblocks += FSFILT_DELETE_TRANS_BLOCKS(inode->i_sb);
281 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
282 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
284 case FSFILT_OP_RENAME:
285 /* modify additional directory */
286 nblocks += FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb);
288 case FSFILT_OP_SYMLINK:
289 /* additional block + block bitmap + GDT for long symlink */
292 case FSFILT_OP_CREATE: {
293 #if defined(EXT3_EXTENTS_FL) && defined(EXT3_INDEX_FL) && !defined(HAVE_EXT4_LDISKFS)
296 if (!test_opt(inode->i_sb, EXTENTS)) {
298 } else if (((EXT3_I(inode)->i_flags &
299 cpu_to_le32(EXT3_EXTENTS_FL | EXT3_INDEX_FL)) ==
300 cpu_to_le32(EXT3_EXTENTS_FL | EXT3_INDEX_FL))) {
301 CWARN("extent-mapped directory found with "
302 "ext3-based ldiskfs - contact "
303 "http://bugs.whamcloud.com/\n");
310 case FSFILT_OP_MKDIR:
311 case FSFILT_OP_MKNOD:
312 /* modify one inode + block bitmap + GDT */
316 /* modify parent directory */
317 nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
318 FSFILT_DATA_TRANS_BLOCKS(inode->i_sb);
319 /* create/update logs for each stripe */
320 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
321 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
323 case FSFILT_OP_SETATTR:
324 /* Setattr on inode */
326 nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
327 FSFILT_DATA_TRANS_BLOCKS(inode->i_sb);
328 /* quota chown log for each stripe */
329 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
330 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
332 case FSFILT_OP_CANCEL_UNLINK:
333 /* blocks for log header bitmap update OR
334 * blocks for catalog header bitmap update + unlink of logs */
335 nblocks = (LLOG_CHUNK_SIZE >> inode->i_blkbits) +
336 FSFILT_DELETE_TRANS_BLOCKS(inode->i_sb) * logs;
338 default: CERROR("unknown transaction start op %d\n", op);
342 LASSERT(current->journal_info == desc_private);
343 journal = EXT3_SB(inode->i_sb)->s_journal;
344 if (nblocks > journal->j_max_transaction_buffers) {
345 CWARN("too many credits %d for op %ux%u using %d instead\n",
346 nblocks, op, logs, journal->j_max_transaction_buffers);
347 nblocks = journal->j_max_transaction_buffers;
351 LASSERTF(nblocks > 0, "can't start %d credit transaction\n", nblocks);
352 handle = ext3_journal_start(inode, nblocks);
355 LASSERT(current->journal_info == handle);
357 CERROR("error starting handle for op %u (%u credits): rc %ld\n",
358 op, nblocks, PTR_ERR(handle));
363 * Calculate the number of buffer credits needed to write multiple pages in
364 * a single ext3 transaction. No, this shouldn't be here, but as yet ext3
365 * doesn't have a nice API for calculating this sort of thing in advance.
367 * See comment above ext3_writepage_trans_blocks for details. We assume
368 * no data journaling is being done, but it does allow for all of the pages
369 * being non-contiguous. If we are guaranteed contiguous pages we could
370 * reduce the number of (d)indirect blocks a lot.
372 * With N blocks per page and P pages, for each inode we have at most:
374 * min(N*P, blocksize/4 + 1) dindirect blocks
377 * For the entire filesystem, we have at most:
378 * min(sum(nindir + P), ngroups) bitmap blocks (from the above)
379 * min(sum(nindir + P), gdblocks) group descriptor blocks (from the above)
380 * objcount inode blocks
382 * 2 * EXT3_SINGLEDATA_TRANS_BLOCKS for the quota files
384 * 1 EXT3_DATA_TRANS_BLOCKS for the last_rcvd update.
386 static int fsfilt_ext3_credits_needed(int objcount, struct fsfilt_objinfo *fso,
387 int niocount, struct niobuf_local *nb)
389 struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
391 const int blockpp = 1 << (CFS_PAGE_SHIFT - sb->s_blocksize_bits);
392 int nbitmaps = 0, ngdblocks;
393 int needed = objcount + 1; /* inodes + superblock */
396 for (i = 0, j = 0; i < objcount; i++, fso++) {
397 /* two or more dindirect blocks in case we cross boundary */
398 int ndind = (long)((nb[j + fso->fso_bufcnt - 1].offset -
400 sb->s_blocksize_bits) /
401 (EXT3_ADDR_PER_BLOCK(sb) * EXT3_ADDR_PER_BLOCK(sb));
402 nbitmaps += min(fso->fso_bufcnt, ndind > 0 ? ndind : 2);
404 /* leaf, indirect, tindirect blocks for first block */
405 nbitmaps += blockpp + 2;
407 j += fso->fso_bufcnt;
410 next_indir = nb[0].offset +
411 (EXT3_ADDR_PER_BLOCK(sb) << sb->s_blocksize_bits);
412 for (i = 1; i < niocount; i++) {
413 if (nb[i].offset >= next_indir) {
414 nbitmaps++; /* additional indirect */
415 next_indir = nb[i].offset +
416 (EXT3_ADDR_PER_BLOCK(sb)<<sb->s_blocksize_bits);
417 } else if (nb[i].offset != nb[i - 1].offset + sb->s_blocksize) {
418 nbitmaps++; /* additional indirect */
420 nbitmaps += blockpp; /* each leaf in different group? */
423 ngdblocks = nbitmaps;
424 if (nbitmaps > EXT3_SB(sb)->s_groups_count)
425 nbitmaps = EXT3_SB(sb)->s_groups_count;
426 if (ngdblocks > EXT3_SB(sb)->s_gdb_count)
427 ngdblocks = EXT3_SB(sb)->s_gdb_count;
429 needed += nbitmaps + ngdblocks;
431 /* last_rcvd update */
432 needed += FSFILT_DATA_TRANS_BLOCKS(sb);
434 #if defined(CONFIG_QUOTA)
435 /* We assume that there will be 1 bit set in s_dquot.flags for each
436 * quota file that is active. This is at least true for now.
438 needed += hweight32(ll_sb_any_quota_active(sb)) *
439 FSFILT_SINGLEDATA_TRANS_BLOCKS(sb);
445 /* We have to start a huge journal transaction here to hold all of the
446 * metadata for the pages being written here. This is necessitated by
447 * the fact that we do lots of prepare_write operations before we do
448 * any of the matching commit_write operations, so even if we split
449 * up to use "smaller" transactions none of them could complete until
450 * all of them were opened. By having a single journal transaction,
451 * we eliminate duplicate reservations for common blocks like the
452 * superblock and group descriptors or bitmaps.
454 * We will start the transaction here, but each prepare_write will
455 * add a refcount to the transaction, and each commit_write will
456 * remove a refcount. The transaction will be closed when all of
457 * the pages have been written.
459 static void *fsfilt_ext3_brw_start(int objcount, struct fsfilt_objinfo *fso,
460 int niocount, struct niobuf_local *nb,
461 void *desc_private, int logs)
468 LASSERT(current->journal_info == desc_private);
469 journal = EXT3_SB(fso->fso_dentry->d_inode->i_sb)->s_journal;
470 needed = fsfilt_ext3_credits_needed(objcount, fso, niocount, nb);
472 /* The number of blocks we could _possibly_ dirty can very large.
473 * We reduce our request if it is absurd (and we couldn't get that
474 * many credits for a single handle anyways).
476 * At some point we have to limit the size of I/Os sent at one time,
477 * increase the size of the journal, or we have to calculate the
478 * actual journal requirements more carefully by checking all of
479 * the blocks instead of being maximally pessimistic. It remains to
480 * be seen if this is a real problem or not.
482 if (needed > journal->j_max_transaction_buffers) {
483 CERROR("want too many journal credits (%d) using %d instead\n",
484 needed, journal->j_max_transaction_buffers);
485 needed = journal->j_max_transaction_buffers;
488 LASSERTF(needed > 0, "can't start %d credit transaction\n", needed);
489 handle = ext3_journal_start(fso->fso_dentry->d_inode, needed);
490 if (IS_ERR(handle)) {
491 CERROR("can't get handle for %d credits: rc = %ld\n", needed,
494 LASSERT(handle->h_buffer_credits >= needed);
495 LASSERT(current->journal_info == handle);
501 static int fsfilt_ext3_extend(struct inode *inode, unsigned int nblocks,void *h)
503 handle_t *handle = h;
505 /* fsfilt_extend called with nblocks = 0 for testing in special cases */
507 handle->h_buffer_credits = 0;
508 CWARN("setting credits of handle %p to zero by request\n", h);
511 if (handle->h_buffer_credits > nblocks)
513 if (ext3_journal_extend(handle, nblocks) == 0)
516 ext3_mark_inode_dirty(handle, inode);
517 return ext3_journal_restart(handle, nblocks);
520 static int fsfilt_ext3_commit(struct inode *inode, void *h, int force_sync)
523 handle_t *handle = h;
525 LASSERT(current->journal_info == handle);
527 handle->h_sync = 1; /* recovery likes this */
529 rc = ext3_journal_stop(handle);
534 static int fsfilt_ext3_commit_async(struct inode *inode, void *h,
538 transaction_t *transaction;
539 handle_t *handle = h;
543 LASSERT(current->journal_info == handle);
545 transaction = handle->h_transaction;
546 journal = transaction->t_journal;
547 tid = transaction->t_tid;
548 /* we don't want to be blocked */
550 rc = ext3_journal_stop(handle);
552 CERROR("error while stopping transaction: %d\n", rc);
555 fsfilt_log_start_commit(journal, tid);
557 *wait_handle = (void *) tid;
558 CDEBUG(D_INODE, "commit async: %lu\n", (unsigned long) tid);
562 static int fsfilt_ext3_commit_wait(struct inode *inode, void *h)
564 journal_t *journal = EXT3_JOURNAL(inode);
565 tid_t tid = (tid_t)(long)h;
567 CDEBUG(D_INODE, "commit wait: %lu\n", (unsigned long) tid);
568 if (unlikely(is_journal_aborted(journal)))
571 fsfilt_log_wait_commit(EXT3_JOURNAL(inode), tid);
573 if (unlikely(is_journal_aborted(journal)))
578 static int fsfilt_ext3_setattr(struct dentry *dentry, void *handle,
579 struct iattr *iattr, int do_trunc)
581 struct inode *inode = dentry->d_inode;
584 /* Avoid marking the inode dirty on the superblock list unnecessarily.
585 * We are already writing the inode to disk as part of this
586 * transaction and want to avoid a lot of extra inode writeout
587 * later on. b=9828 */
588 if (iattr->ia_valid & ATTR_SIZE && !do_trunc) {
589 /* ATTR_SIZE would invoke truncate: clear it */
590 iattr->ia_valid &= ~ATTR_SIZE;
591 EXT3_I(inode)->i_disksize = iattr->ia_size;
592 i_size_write(inode, iattr->ia_size);
594 if (iattr->ia_valid & ATTR_UID)
595 inode->i_uid = iattr->ia_uid;
596 if (iattr->ia_valid & ATTR_GID)
597 inode->i_gid = iattr->ia_gid;
598 if (iattr->ia_valid & ATTR_ATIME)
599 inode->i_atime = iattr->ia_atime;
600 if (iattr->ia_valid & ATTR_MTIME)
601 inode->i_mtime = iattr->ia_mtime;
602 if (iattr->ia_valid & ATTR_CTIME)
603 inode->i_ctime = iattr->ia_ctime;
604 if (iattr->ia_valid & ATTR_MODE) {
605 inode->i_mode = iattr->ia_mode;
607 if (!cfs_curproc_is_in_groups(inode->i_gid) &&
608 !cfs_capable(CFS_CAP_FSETID))
609 inode->i_mode &= ~S_ISGID;
612 inode->i_sb->s_op->dirty_inode(inode);
617 /* Don't allow setattr to change file type */
618 if (iattr->ia_valid & ATTR_MODE)
619 iattr->ia_mode = (inode->i_mode & S_IFMT) |
620 (iattr->ia_mode & ~S_IFMT);
622 /* We set these flags on the client, but have already checked perms
623 * so don't confuse inode_change_ok. */
624 iattr->ia_valid &= ~(ATTR_MTIME_SET | ATTR_ATIME_SET);
626 if (inode->i_op->setattr) {
627 rc = inode->i_op->setattr(dentry, iattr);
629 rc = inode_change_ok(inode, iattr);
631 rc = inode_setattr(inode, iattr);
638 static int fsfilt_ext3_iocontrol(struct inode *inode, struct file *file,
639 unsigned int cmd, unsigned long arg)
644 /* FIXME: Can't do this because of nested transaction deadlock */
645 if (cmd == EXT3_IOC_SETFLAGS) {
646 /* We can't enable data journaling on OST objects, because
647 * this forces the transaction to be closed in order to
648 * flush the journal, but the caller will already have a
649 * compound transaction open to update the last_rcvd file,
650 * and this thread would deadlock trying to set the flag. */
651 if ((*(int *)arg) & EXT3_JOURNAL_DATA_FL) {
652 CERROR("can't set data journal flag on file\n");
655 /* Because the MDS does not see the EXTENTS_FL set on the
656 * OST objects, mask this flag into all set flags. It is
657 * not legal to clear this flag in any case, so we are not
658 * changing the functionality by doing this. b=22911 */
659 *(int *)arg |= EXT3_I(inode)->i_flags & EXT3_EXTENTS_FL;
662 #ifdef HAVE_EXT4_LDISKFS
663 /* ext4_ioctl does not have a inode argument */
664 if (inode->i_fop->unlocked_ioctl)
665 rc = inode->i_fop->unlocked_ioctl(file, cmd, arg);
667 if (inode->i_fop->ioctl)
668 rc = inode->i_fop->ioctl(inode, file, cmd, arg);
676 static int fsfilt_ext3_set_md(struct inode *inode, void *handle,
677 void *lmm, int lmm_size, const char *name)
681 LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
683 rc = ext3_xattr_set_handle(handle, inode, EXT3_XATTR_INDEX_TRUSTED,
684 name, lmm, lmm_size, XATTR_NO_CTIME);
687 if (rc && rc != -EROFS)
688 CERROR("error adding MD data to inode %lu: rc = %d\n",
693 /* Must be called with i_mutex held */
694 static int fsfilt_ext3_get_md(struct inode *inode, void *lmm, int lmm_size,
699 LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
701 rc = ext3_xattr_get(inode, EXT3_XATTR_INDEX_TRUSTED,
702 name, lmm, lmm_size);
704 /* This gives us the MD size */
706 return (rc == -ENODATA) ? 0 : rc;
709 CDEBUG(D_INFO, "error getting EA %d/%s from inode %lu: rc %d\n",
710 EXT3_XATTR_INDEX_TRUSTED, name,
712 memset(lmm, 0, lmm_size);
713 return (rc == -ENODATA) ? 0 : rc;
719 static int fsfilt_ext3_send_bio(int rw, struct inode *inode, struct bio *bio)
725 static ssize_t fsfilt_ext3_readpage(struct file *file, char *buf, size_t count,
728 struct inode *inode = file->f_dentry->d_inode;
731 if (S_ISREG(inode->i_mode))
732 rc = file->f_op->read(file, buf, count, off);
734 const int blkbits = inode->i_sb->s_blocksize_bits;
735 const int blksize = inode->i_sb->s_blocksize;
737 CDEBUG(D_EXT2, "reading %lu at dir %lu+%llu\n",
738 (unsigned long)count, inode->i_ino, *off);
740 struct buffer_head *bh;
743 if (*off < i_size_read(inode)) {
746 bh = ext3_bread(NULL, inode, *off >> blkbits,
749 CDEBUG(D_EXT2, "read %u@%llu\n", blksize, *off);
752 memcpy(buf, bh->b_data, blksize);
755 /* XXX in theory we should just fake
756 * this buffer and continue like ext3,
757 * especially if this is a partial read
759 CERROR("error read dir %lu+%llu: %d\n",
760 inode->i_ino, *off, err);
765 struct ext3_dir_entry_2 *fake = (void *)buf;
767 CDEBUG(D_EXT2, "fake %u@%llu\n", blksize, *off);
768 memset(fake, 0, sizeof(*fake));
769 fake->rec_len = cpu_to_le16(blksize);
781 #ifdef HAVE_EXT4_JOURNAL_CALLBACK_ADD
782 static void fsfilt_ext3_cb_func(struct super_block *sb,
783 struct journal_callback *jcb, int error)
785 static void fsfilt_ext3_cb_func(struct journal_callback *jcb, int error)
788 struct fsfilt_cb_data *fcb = container_of(jcb, typeof(*fcb), cb_jcb);
790 fcb->cb_func(fcb->cb_obd, fcb->cb_last_rcvd, fcb->cb_data, error);
792 OBD_SLAB_FREE(fcb, fcb_cache, sizeof *fcb);
795 static int fsfilt_ext3_add_journal_cb(struct obd_device *obd, __u64 last_rcvd,
796 void *handle, fsfilt_cb_t cb_func,
799 struct fsfilt_cb_data *fcb;
801 OBD_SLAB_ALLOC_PTR_GFP(fcb, fcb_cache, CFS_ALLOC_IO);
805 fcb->cb_func = cb_func;
807 fcb->cb_last_rcvd = last_rcvd;
808 fcb->cb_data = cb_data;
810 CDEBUG(D_EXT2, "set callback for last_rcvd: "LPD64"\n", last_rcvd);
811 fsfilt_journal_callback_set(handle, fsfilt_ext3_cb_func, &fcb->cb_jcb);
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 # define fsfilt_up_truncate_sem(inode) do{ }while(0)
842 # define fsfilt_down_truncate_sem(inode) do{ }while(0)
844 # define fsfilt_up_truncate_sem(inode) mutex_unlock(&EXT3_I(inode)->truncate_mutex)
845 # define fsfilt_down_truncate_sem(inode) mutex_lock(&EXT3_I(inode)->truncate_mutex)
850 #define EXT_ASSERT(cond) BUG_ON(!(cond))
853 #ifdef EXT3_EXT_HAS_NO_TREE
854 /* for kernels 2.6.18 and later */
855 #ifdef HAVE_EXT4_LDISKFS
856 #define EXT_GENERATION(inode) (EXT4_I(inode)->i_ext_generation)
858 #define EXT_GENERATION(inode) ext_generation(inode)
860 #define ext3_ext_base inode
861 #define ext3_ext_base2inode(inode) (inode)
862 #define EXT_DEPTH(inode) ext_depth(inode)
863 #define fsfilt_ext3_ext_walk_space(inode, block, num, cb, cbdata) \
864 ext3_ext_walk_space(inode, block, num, cb, cbdata);
866 #define ext3_ext_base ext3_extents_tree
867 #define ext3_ext_base2inode(tree) (tree->inode)
868 #define fsfilt_ext3_ext_walk_space(tree, block, num, cb, cbdata) \
869 ext3_ext_walk_space(tree, block, num, cb);
872 #include <linux/lustre_version.h>
875 unsigned long *blocks;
883 static long ext3_ext_find_goal(struct inode *inode, struct ext3_ext_path *path,
884 unsigned long block, int *aflags)
886 struct ext3_inode_info *ei = EXT3_I(inode);
887 unsigned long bg_start;
888 unsigned long colour;
892 struct ext3_extent *ex;
893 depth = path->p_depth;
895 /* try to predict block placement */
896 if ((ex = path[depth].p_ext))
897 return ext_pblock(ex) + (block - le32_to_cpu(ex->ee_block));
899 /* it looks index is empty
900 * try to find starting from index itself */
901 if (path[depth].p_bh)
902 return path[depth].p_bh->b_blocknr;
905 /* OK. use inode's group */
906 bg_start = (ei->i_block_group * EXT3_BLOCKS_PER_GROUP(inode->i_sb)) +
907 le32_to_cpu(EXT3_SB(inode->i_sb)->s_es->s_first_data_block);
908 colour = (current->pid % 16) *
909 (EXT3_BLOCKS_PER_GROUP(inode->i_sb) / 16);
910 return bg_start + colour + block;
913 #define ll_unmap_underlying_metadata(sb, blocknr) \
914 unmap_underlying_metadata((sb)->s_bdev, blocknr)
916 #ifndef EXT3_MB_HINT_GROUP_ALLOC
917 static unsigned long new_blocks(handle_t *handle, struct ext3_ext_base *base,
918 struct ext3_ext_path *path, unsigned long block,
919 unsigned long *count, int *err)
921 unsigned long pblock, goal;
923 struct inode *inode = ext3_ext_base2inode(base);
925 goal = ext3_ext_find_goal(inode, path, block, &aflags);
926 aflags |= 2; /* block have been already reserved */
927 pblock = ext3_mb_new_blocks(handle, inode, goal, count, aflags, err);
932 static unsigned long new_blocks(handle_t *handle, struct ext3_ext_base *base,
933 struct ext3_ext_path *path, unsigned long block,
934 unsigned long *count, int *err)
936 struct inode *inode = ext3_ext_base2inode(base);
937 struct ext3_allocation_request ar;
938 unsigned long pblock;
941 /* find neighbour allocated blocks */
943 *err = ext3_ext_search_left(base, path, &ar.lleft, &ar.pleft);
947 *err = ext3_ext_search_right(base, path, &ar.lright, &ar.pright);
951 /* allocate new block */
952 ar.goal = ext3_ext_find_goal(inode, path, block, &aflags);
956 ar.flags = EXT3_MB_HINT_DATA;
957 pblock = ext3_mb_new_blocks(handle, &ar, err);
963 #ifdef EXT3_EXT_HAS_NO_TREE
964 static int ext3_ext_new_extent_cb(struct ext3_ext_base *base,
965 struct ext3_ext_path *path,
966 struct ext3_ext_cache *cex,
967 #ifdef HAVE_EXT_PREPARE_CB_EXTENT
968 struct ext3_extent *ex,
972 struct bpointers *bp = cbdata;
974 static int ext3_ext_new_extent_cb(struct ext3_ext_base *base,
975 struct ext3_ext_path *path,
976 struct ext3_ext_cache *cex
977 #ifdef HAVE_EXT_PREPARE_CB_EXTENT
978 , struct ext3_extent *ex
982 struct bpointers *bp = base->private;
984 struct inode *inode = ext3_ext_base2inode(base);
985 struct ext3_extent nex;
986 #if defined(HAVE_EXT4_LDISKFS)
987 struct ext4_ext_path *tmppath = NULL;
988 struct ext4_extent *tmpex;
990 unsigned long pblock;
996 i = depth = EXT_DEPTH(base);
997 EXT_ASSERT(i == path->p_depth);
998 EXT_ASSERT(path[i].p_hdr);
1000 if (cex->ec_type == EXT3_EXT_CACHE_EXTENT) {
1005 if (bp->create == 0) {
1007 if (cex->ec_block < bp->start)
1008 i = bp->start - cex->ec_block;
1009 if (i >= cex->ec_len)
1010 CERROR("nothing to do?! i = %d, e_num = %u\n",
1012 for (; i < cex->ec_len && bp->num; i++) {
1021 return EXT_CONTINUE;
1024 tgen = EXT_GENERATION(base);
1025 count = ext3_ext_calc_credits_for_insert(base, path);
1026 fsfilt_up_truncate_sem(inode);
1028 handle = ext3_journal_start(inode, count+EXT3_ALLOC_NEEDED+1);
1029 if (IS_ERR(handle)) {
1030 fsfilt_down_truncate_sem(inode);
1031 return PTR_ERR(handle);
1034 fsfilt_down_truncate_sem(inode);
1035 if (tgen != EXT_GENERATION(base)) {
1036 /* the tree has changed. so path can be invalid at moment */
1037 ext3_journal_stop(handle);
1041 #if defined(HAVE_EXT4_LDISKFS)
1042 /* In 2.6.32 kernel, ext4_ext_walk_space()'s callback func is not
1043 * protected by i_data_sem, we need revalidate extent to be created */
1044 down_write((&EXT4_I(inode)->i_data_sem));
1046 /* validate extent, make sure the extent tree does not changed */
1047 tmppath = ext4_ext_find_extent(inode, cex->ec_block, NULL);
1048 if (IS_ERR(tmppath)) {
1049 up_write(&EXT4_I(inode)->i_data_sem);
1050 ext3_journal_stop(handle);
1051 return PTR_ERR(tmppath);
1053 tmpex = tmppath[depth].p_ext;
1055 /* cex is invalid, try again */
1056 ext4_ext_drop_refs(tmppath);
1058 up_write(&EXT4_I(inode)->i_data_sem);
1059 ext3_journal_stop(handle);
1064 count = cex->ec_len;
1065 pblock = new_blocks(handle, base, path, cex->ec_block, &count, &err);
1068 EXT_ASSERT(count <= cex->ec_len);
1070 /* insert new extent */
1071 nex.ee_block = cpu_to_le32(cex->ec_block);
1072 ext3_ext_store_pblock(&nex, pblock);
1073 nex.ee_len = cpu_to_le16(count);
1074 err = fsfilt_ext3_ext_insert_extent(handle, base, path, &nex, 0);
1076 /* free data blocks we just allocated */
1077 /* not a good idea to call discard here directly,
1078 * but otherwise we'd need to call it every free() */
1079 #ifdef EXT3_MB_HINT_GROUP_ALLOC
1080 ext3_mb_discard_inode_preallocations(inode);
1082 ext3_free_blocks(handle, inode, ext_pblock(&nex),
1083 cpu_to_le16(nex.ee_len), 0);
1088 * Putting len of the actual extent we just inserted,
1089 * we are asking ext3_ext_walk_space() to continue
1090 * scaning after that block
1092 cex->ec_len = le16_to_cpu(nex.ee_len);
1093 cex->ec_start = ext_pblock(&nex);
1094 BUG_ON(le16_to_cpu(nex.ee_len) == 0);
1095 BUG_ON(le32_to_cpu(nex.ee_block) != cex->ec_block);
1098 #if defined(HAVE_EXT4_LDISKFS)
1099 ext4_ext_drop_refs(tmppath);
1101 up_write((&EXT4_I(inode)->i_data_sem));
1103 ext3_journal_stop(handle);
1108 CERROR("hmm. why do we find this extent?\n");
1109 CERROR("initial space: %lu:%u\n",
1110 bp->start, bp->init_num);
1111 CERROR("current extent: %u/%u/%llu %d\n",
1112 cex->ec_block, cex->ec_len,
1113 (unsigned long long)cex->ec_start,
1117 if (cex->ec_block < bp->start)
1118 i = bp->start - cex->ec_block;
1119 if (i >= cex->ec_len)
1120 CERROR("nothing to do?! i = %d, e_num = %u\n",
1122 for (; i < cex->ec_len && bp->num; i++) {
1123 *(bp->blocks) = cex->ec_start + i;
1124 if (cex->ec_type == EXT3_EXT_CACHE_EXTENT) {
1128 /* unmap any possible underlying metadata from
1129 * the block device mapping. bug 6998. */
1130 ll_unmap_underlying_metadata(inode->i_sb,
1142 int fsfilt_map_nblocks(struct inode *inode, unsigned long block,
1143 unsigned long num, unsigned long *blocks,
1144 int *created, int create)
1146 #ifdef EXT3_EXT_HAS_NO_TREE
1147 struct ext3_ext_base *base = inode;
1149 struct ext3_extents_tree tree;
1150 struct ext3_ext_base *base = &tree;
1152 struct bpointers bp;
1155 CDEBUG(D_OTHER, "blocks %lu-%lu requested for inode %u\n",
1156 block, block + num - 1, (unsigned) inode->i_ino);
1158 #ifndef EXT3_EXT_HAS_NO_TREE
1159 ext3_init_tree_desc(base, inode);
1163 bp.created = created;
1165 bp.init_num = bp.num = num;
1168 fsfilt_down_truncate_sem(inode);
1169 err = fsfilt_ext3_ext_walk_space(base, block, num,
1170 ext3_ext_new_extent_cb, &bp);
1171 ext3_ext_invalidate_cache(base);
1172 fsfilt_up_truncate_sem(inode);
1177 int fsfilt_ext3_map_ext_inode_pages(struct inode *inode, struct page **page,
1178 int pages, unsigned long *blocks,
1179 int *created, int create)
1181 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
1183 struct page *fp = NULL;
1186 CDEBUG(D_OTHER, "inode %lu: map %d pages from %lu\n",
1187 inode->i_ino, pages, (*page)->index);
1189 /* pages are sorted already. so, we just have to find
1190 * contig. space and process them properly */
1193 /* start new extent */
1198 } else if (fp->index + clen == (*page)->index) {
1199 /* continue the extent */
1206 /* process found extent */
1207 rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
1208 clen * blocks_per_page, blocks,
1213 /* look for next extent */
1215 blocks += blocks_per_page * clen;
1216 created += blocks_per_page * clen;
1220 rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
1221 clen * blocks_per_page, blocks,
1227 extern int ext3_map_inode_page(struct inode *inode, struct page *page,
1228 unsigned long *blocks, int *created, int create);
1229 int fsfilt_ext3_map_bm_inode_pages(struct inode *inode, struct page **page,
1230 int pages, unsigned long *blocks,
1231 int *created, int create)
1233 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
1237 for (i = 0, cr = created, b = blocks; i < pages; i++, page++) {
1238 rc = ext3_map_inode_page(inode, *page, b, cr, create);
1240 CERROR("ino %lu, blk %lu cr %u create %d: rc %d\n",
1241 inode->i_ino, *b, *cr, create, rc);
1245 b += blocks_per_page;
1246 cr += blocks_per_page;
1251 int fsfilt_ext3_map_inode_pages(struct inode *inode, struct page **page,
1252 int pages, unsigned long *blocks,
1253 int *created, int create,
1254 cfs_semaphore_t *optional_sem)
1258 if (EXT3_I(inode)->i_flags & EXT3_EXTENTS_FL) {
1259 rc = fsfilt_ext3_map_ext_inode_pages(inode, page, pages,
1260 blocks, created, create);
1263 if (optional_sem != NULL)
1264 cfs_down(optional_sem);
1265 rc = fsfilt_ext3_map_bm_inode_pages(inode, page, pages, blocks,
1267 if (optional_sem != NULL)
1268 cfs_up(optional_sem);
1273 int fsfilt_ext3_read(struct inode *inode, void *buf, int size, loff_t *offs)
1275 unsigned long block;
1276 struct buffer_head *bh;
1277 int err, blocksize, csize, boffs, osize = size;
1279 /* prevent reading after eof */
1281 if (i_size_read(inode) < *offs + size) {
1282 size = i_size_read(inode) - *offs;
1283 cfs_unlock_kernel();
1285 CDEBUG(D_EXT2, "size %llu is too short for read @%llu\n",
1286 i_size_read(inode), *offs);
1288 } else if (size == 0) {
1292 cfs_unlock_kernel();
1295 blocksize = 1 << inode->i_blkbits;
1298 block = *offs >> inode->i_blkbits;
1299 boffs = *offs & (blocksize - 1);
1300 csize = min(blocksize - boffs, size);
1301 bh = ext3_bread(NULL, inode, block, 0, &err);
1303 CERROR("can't read block: %d\n", err);
1307 memcpy(buf, bh->b_data + boffs, csize);
1316 EXPORT_SYMBOL(fsfilt_ext3_read);
1318 static int fsfilt_ext3_read_record(struct file * file, void *buf,
1319 int size, loff_t *offs)
1322 rc = fsfilt_ext3_read(file->f_dentry->d_inode, buf, size, offs);
1328 int fsfilt_ext3_write_handle(struct inode *inode, void *buf, int bufsize,
1329 loff_t *offs, handle_t *handle)
1331 struct buffer_head *bh = NULL;
1332 loff_t old_size = i_size_read(inode), offset = *offs;
1333 loff_t new_size = i_size_read(inode);
1334 unsigned long block;
1335 int err = 0, blocksize = 1 << inode->i_blkbits, size, boffs;
1337 while (bufsize > 0) {
1341 block = offset >> inode->i_blkbits;
1342 boffs = offset & (blocksize - 1);
1343 size = min(blocksize - boffs, bufsize);
1344 bh = ext3_bread(handle, inode, block, 1, &err);
1346 CERROR("can't read/create block: %d\n", err);
1350 err = ext3_journal_get_write_access(handle, bh);
1352 CERROR("journal_get_write_access() returned error %d\n",
1356 LASSERT(bh->b_data + boffs + size <= bh->b_data + bh->b_size);
1357 memcpy(bh->b_data + boffs, buf, size);
1358 err = ext3_journal_dirty_metadata(handle, bh);
1360 CERROR("journal_dirty_metadata() returned error %d\n",
1364 if (offset + size > new_size)
1365 new_size = offset + size;
1373 /* correct in-core and on-disk sizes */
1374 if (new_size > i_size_read(inode)) {
1376 if (new_size > i_size_read(inode))
1377 i_size_write(inode, new_size);
1378 if (i_size_read(inode) > EXT3_I(inode)->i_disksize)
1379 EXT3_I(inode)->i_disksize = i_size_read(inode);
1380 if (i_size_read(inode) > old_size)
1381 mark_inode_dirty(inode);
1382 cfs_unlock_kernel();
1389 EXPORT_SYMBOL(fsfilt_ext3_write_handle);
1391 static int fsfilt_ext3_write_record(struct file *file, void *buf, int bufsize,
1392 loff_t *offs, int force_sync)
1394 struct inode *inode = file->f_dentry->d_inode;
1396 int err, block_count = 0, blocksize;
1398 /* Determine how many transaction credits are needed */
1399 blocksize = 1 << inode->i_blkbits;
1400 block_count = (*offs & (blocksize - 1)) + bufsize;
1401 block_count = (block_count + blocksize - 1) >> inode->i_blkbits;
1403 handle = ext3_journal_start(inode,
1404 block_count * FSFILT_DATA_TRANS_BLOCKS(inode->i_sb) + 2);
1405 if (IS_ERR(handle)) {
1406 CERROR("can't start transaction for %d blocks (%d bytes)\n",
1407 block_count * FSFILT_DATA_TRANS_BLOCKS(inode->i_sb) + 2, bufsize);
1408 return PTR_ERR(handle);
1411 err = fsfilt_ext3_write_handle(inode, buf, bufsize, offs, handle);
1413 if (!err && force_sync)
1414 handle->h_sync = 1; /* recovery likes this */
1416 ext3_journal_stop(handle);
1421 static int fsfilt_ext3_setup(struct super_block *sb)
1423 #if ((LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,6)) && \
1424 defined(HAVE_QUOTA_SUPPORT)) || defined(S_PDIROPS)
1425 struct ext3_sb_info *sbi = EXT3_SB(sb);
1427 sbi->dx_lock = fsfilt_ext3_dx_lock;
1428 sbi->dx_unlock = fsfilt_ext3_dx_unlock;
1432 CWARN("Enabling PDIROPS\n");
1433 set_opt(sbi->s_mount_opt, PDIROPS);
1434 sb->s_flags |= S_PDIROPS;
1436 if (!EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_DIR_INDEX))
1437 CWARN("filesystem doesn't have dir_index feature enabled\n");
1438 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,6)) && defined(HAVE_QUOTA_SUPPORT)
1439 /* enable journaled quota support */
1440 /* kfreed in ext3_put_super() */
1441 sbi->s_qf_names[USRQUOTA] = kstrdup("lquota.user.reserved", GFP_KERNEL);
1442 if (!sbi->s_qf_names[USRQUOTA])
1444 sbi->s_qf_names[GRPQUOTA] = kstrdup("lquota.group.reserved", GFP_KERNEL);
1445 if (!sbi->s_qf_names[GRPQUOTA]) {
1446 kfree(sbi->s_qf_names[USRQUOTA]);
1447 sbi->s_qf_names[USRQUOTA] = NULL;
1450 sbi->s_jquota_fmt = QFMT_LUSTRE;
1451 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13))
1452 set_opt(sbi->s_mount_opt, QUOTA);
1458 /* If fso is NULL, op is FSFILT operation, otherwise op is number of fso
1459 objects. Logs is number of logfiles to update */
1460 static int fsfilt_ext3_get_op_len(int op, struct fsfilt_objinfo *fso, int logs)
1464 case FSFILT_OP_CREATE:
1465 /* directory leaf, index & indirect & EA*/
1466 return 4 + 3 * logs;
1467 case FSFILT_OP_UNLINK:
1473 struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
1474 int blockpp = 1 << (CFS_PAGE_SHIFT - sb->s_blocksize_bits);
1475 int addrpp = EXT3_ADDR_PER_BLOCK(sb) * blockpp;
1476 for (i = 0; i < op; i++, fso++) {
1477 int nblocks = fso->fso_bufcnt * blockpp;
1478 int ndindirect = min(nblocks, addrpp + 1);
1479 int nindir = nblocks + ndindirect + 1;
1483 return needed + 3 * logs;
1489 #ifdef HAVE_QUOTA_SUPPORT
1490 #define DQINFO_COPY(out, in) \
1492 Q_COPY(out, in, dqi_bgrace); \
1493 Q_COPY(out, in, dqi_igrace); \
1494 Q_COPY(out, in, dqi_flags); \
1495 Q_COPY(out, in, dqi_valid); \
1498 #define DQBLK_COPY(out, in) \
1500 Q_COPY(out, in, dqb_bhardlimit); \
1501 Q_COPY(out, in, dqb_bsoftlimit); \
1502 Q_COPY(out, in, dqb_curspace); \
1503 Q_COPY(out, in, dqb_ihardlimit); \
1504 Q_COPY(out, in, dqb_isoftlimit); \
1505 Q_COPY(out, in, dqb_curinodes); \
1506 Q_COPY(out, in, dqb_btime); \
1507 Q_COPY(out, in, dqb_itime); \
1508 Q_COPY(out, in, dqb_valid); \
1511 static int fsfilt_ext3_quotactl(struct super_block *sb,
1512 struct obd_quotactl *oqc)
1514 int i, rc = 0, error = 0;
1515 const struct quotactl_ops *qcop;
1516 struct if_dqinfo *info;
1517 struct if_dqblk *dqblk;
1523 OBD_ALLOC_PTR(info);
1526 OBD_ALLOC_PTR(dqblk);
1532 DQINFO_COPY(info, &oqc->qc_dqinfo);
1533 DQBLK_COPY(dqblk, &oqc->qc_dqblk);
1536 if (oqc->qc_cmd == Q_QUOTAON || oqc->qc_cmd == Q_QUOTAOFF) {
1537 for (i = 0; i < MAXQUOTAS; i++) {
1538 if (!Q_TYPESET(oqc, i))
1541 if (oqc->qc_cmd == Q_QUOTAON) {
1542 char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1544 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1546 rc = ll_quota_on(sb, i, QFMT_LUSTRE,
1548 } else if (oqc->qc_cmd == Q_QUOTAOFF) {
1549 rc = ll_quota_off(sb, i, 0);
1557 GOTO(out, rc ?: error);
1560 switch (oqc->qc_cmd) {
1563 if (!qcop->get_info)
1564 GOTO(out, rc = -ENOSYS);
1565 rc = qcop->get_info(sb, oqc->qc_type, info);
1569 if (!qcop->set_dqblk)
1570 GOTO(out, rc = -ENOSYS);
1571 rc = qcop->set_dqblk(sb, oqc->qc_type, oqc->qc_id, dqblk);
1575 if (!qcop->get_dqblk)
1576 GOTO(out, rc = -ENOSYS);
1577 rc = qcop->get_dqblk(sb, oqc->qc_type, oqc->qc_id, dqblk);
1579 dqblk->dqb_valid = QIF_LIMITS | QIF_USAGE;
1582 if (!sb->s_qcop->quota_sync)
1583 GOTO(out, rc = -ENOSYS);
1584 qcop->quota_sync(sb, oqc->qc_type);
1587 CDEBUG(D_WARNING, "invalidating operational quota files\n");
1588 for (i = 0; i < MAXQUOTAS; i++) {
1590 char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1592 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1594 if (!Q_TYPESET(oqc, i))
1597 fp = filp_open(name[i], O_CREAT | O_TRUNC | O_RDWR, 0644);
1600 CERROR("error invalidating operational quota file"
1601 " %s (rc:%d)\n", name[i], rc);
1609 CERROR("unsupported quotactl command: %d\n", oqc->qc_cmd);
1613 DQINFO_COPY(&oqc->qc_dqinfo, info);
1614 DQBLK_COPY(&oqc->qc_dqblk, dqblk);
1617 OBD_FREE_PTR(dqblk);
1620 CDEBUG(D_QUOTA, "quotactl command %#x, id %u, type %u "
1622 oqc->qc_cmd, oqc->qc_id, oqc->qc_type, rc);
1627 cfs_hlist_node_t dqb_hash; /** quotacheck hash */
1628 cfs_list_t dqb_list; /** in list also */
1629 qid_t dqb_id; /** uid/gid */
1630 short dqb_type; /** USRQUOTA/GRPQUOTA */
1631 qsize_t dqb_bhardlimit; /** block hard limit */
1632 qsize_t dqb_bsoftlimit; /** block soft limit */
1633 qsize_t dqb_curspace; /** current space */
1634 qsize_t dqb_ihardlimit; /** inode hard limit */
1635 qsize_t dqb_isoftlimit; /** inode soft limit */
1636 qsize_t dqb_curinodes; /** current inodes */
1637 obd_time dqb_btime; /** block grace time */
1638 obd_time dqb_itime; /** inode grace time */
1639 __u32 dqb_valid; /** flag for above fields */
1642 static inline unsigned int chkquot_hash(qid_t id, int type)
1643 __attribute__((__const__));
1645 static inline unsigned int chkquot_hash(qid_t id, int type)
1647 return (id * (MAXQUOTAS - type)) % NR_DQHASH;
1650 static inline struct chk_dqblk *
1651 find_chkquot(cfs_hlist_head_t *head, qid_t id, int type)
1653 cfs_hlist_node_t *node;
1654 struct chk_dqblk *cdqb;
1656 cfs_hlist_for_each(node, head) {
1657 cdqb = cfs_hlist_entry(node, struct chk_dqblk, dqb_hash);
1658 if (cdqb->dqb_id == id && cdqb->dqb_type == type)
1665 static struct chk_dqblk *alloc_chkquot(qid_t id, int type)
1667 struct chk_dqblk *cdqb;
1669 OBD_ALLOC_PTR(cdqb);
1671 CFS_INIT_HLIST_NODE(&cdqb->dqb_hash);
1672 CFS_INIT_LIST_HEAD(&cdqb->dqb_list);
1674 cdqb->dqb_type = type;
1680 static struct chk_dqblk *
1681 cqget(struct super_block *sb, cfs_hlist_head_t *hash,
1682 cfs_list_t *list, qid_t id, int type, int first_check)
1684 cfs_hlist_head_t *head = hash + chkquot_hash(id, type);
1685 struct if_dqblk dqb;
1686 struct chk_dqblk *cdqb;
1689 cdqb = find_chkquot(head, id, type);
1693 cdqb = alloc_chkquot(id, type);
1698 rc = sb->s_qcop->get_dqblk(sb, type, id, &dqb);
1700 CERROR("get_dqblk of id %u, type %d failed: %d\n",
1703 DQBLK_COPY(cdqb, &dqb);
1704 cdqb->dqb_curspace = 0;
1705 cdqb->dqb_curinodes = 0;
1709 cfs_hlist_add_head(&cdqb->dqb_hash, head);
1710 cfs_list_add_tail(&cdqb->dqb_list, list);
1715 static inline int quota_onoff(struct super_block *sb, int cmd, int type, int qfmt)
1717 struct obd_quotactl *oqctl;
1720 OBD_ALLOC_PTR(oqctl);
1724 oqctl->qc_cmd = cmd;
1725 oqctl->qc_id = qfmt;
1726 oqctl->qc_type = type;
1727 rc = fsfilt_ext3_quotactl(sb, oqctl);
1729 OBD_FREE_PTR(oqctl);
1733 static inline int read_old_dqinfo(struct super_block *sb, int type,
1734 struct if_dqinfo *dqinfo)
1736 struct obd_quotactl *oqctl;
1740 OBD_ALLOC_PTR(oqctl);
1744 oqctl->qc_cmd = Q_GETINFO;
1745 oqctl->qc_type = type;
1746 rc = fsfilt_ext3_quotactl(sb, oqctl);
1748 ((struct obd_dqinfo *)dqinfo)[type] = oqctl->qc_dqinfo;
1750 OBD_FREE_PTR(oqctl);
1754 #ifndef HAVE_EXT4_LDISKFS
1755 static inline struct ext3_group_desc *
1756 get_group_desc(struct super_block *sb, int group, struct buffer_head **bh)
1758 unsigned long desc_block, desc;
1759 struct ext3_group_desc *gdp;
1761 desc_block = group / EXT3_DESC_PER_BLOCK(sb);
1762 desc = group % EXT3_DESC_PER_BLOCK(sb);
1763 gdp = (struct ext3_group_desc *)
1764 EXT3_SB(sb)->s_group_desc[desc_block]->b_data;
1769 static inline struct buffer_head *
1770 ext3_read_inode_bitmap(struct super_block *sb, unsigned long group)
1772 struct ext3_group_desc *desc;
1773 struct buffer_head *bh;
1775 desc = get_group_desc(sb, group, NULL);
1776 bh = sb_bread(sb, ext3_inode_bitmap(sb, desc));
1780 static __u32 ext3_itable_unused_count(struct super_block *sb,
1781 struct ext3_group_desc *bg) {
1782 return le16_to_cpu(bg->bg_itable_unused);
1785 #define get_group_desc ext3_get_group_desc
1789 cfs_hlist_head_t qckt_hash[NR_DQHASH]; /* quotacheck hash */
1790 cfs_list_t qckt_list; /* quotacheck list */
1791 int qckt_first_check[MAXQUOTAS]; /* 1 if no old quotafile */
1792 struct if_dqinfo qckt_dqinfo[MAXQUOTAS]; /* old dqinfo */
1795 static int add_inode_quota(struct inode *inode, struct qchk_ctxt *qctxt,
1796 struct obd_quotactl *oqc)
1798 struct chk_dqblk *cdqb[MAXQUOTAS] = { NULL, };
1800 qid_t qid[MAXQUOTAS];
1806 qid[USRQUOTA] = inode->i_uid;
1807 qid[GRPQUOTA] = inode->i_gid;
1809 if (S_ISDIR(inode->i_mode) ||
1810 S_ISREG(inode->i_mode) ||
1811 S_ISLNK(inode->i_mode))
1812 size = inode_get_bytes(inode);
1814 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
1815 if (!Q_TYPESET(oqc, cnt))
1818 cdqb[cnt] = cqget(inode->i_sb, qctxt->qckt_hash,
1819 &qctxt->qckt_list, qid[cnt], cnt,
1820 qctxt->qckt_first_check[cnt]);
1826 cdqb[cnt]->dqb_curspace += size;
1827 cdqb[cnt]->dqb_curinodes++;
1831 for (i = 0; i < cnt; i++) {
1832 if (!Q_TYPESET(oqc, i))
1835 cdqb[i]->dqb_curspace -= size;
1836 cdqb[i]->dqb_curinodes--;
1843 /* write dqinfo struct in a new quota file */
1844 static int v3_write_dqinfo(struct file *f, int type, struct if_dqinfo *info)
1846 struct v2_disk_dqinfo dqinfo;
1847 __u32 blocks = V2_DQTREEOFF + 1;
1848 loff_t offset = V2_DQINFOOFF;
1851 dqinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace);
1852 dqinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace);
1853 dqinfo.dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK &
1856 dqinfo.dqi_bgrace = cpu_to_le32(MAX_DQ_TIME);
1857 dqinfo.dqi_igrace = cpu_to_le32(MAX_IQ_TIME);
1858 dqinfo.dqi_flags = 0;
1861 dqinfo.dqi_blocks = cpu_to_le32(blocks);
1862 dqinfo.dqi_free_blk = 0;
1863 dqinfo.dqi_free_entry = 0;
1865 return cfs_user_write(f, (char *)&dqinfo, sizeof(dqinfo), &offset);
1868 static int v3_write_dqheader(struct file *f, int type)
1870 static const __u32 quota_magics[] = V2_INITQMAGICS;
1871 static const __u32 quota_versions[] = LUSTRE_INITQVERSIONS_V2;
1872 struct v2_disk_dqheader dqhead;
1875 CLASSERT(ARRAY_SIZE(quota_magics) == ARRAY_SIZE(quota_versions));
1876 LASSERT(0 <= type && type < ARRAY_SIZE(quota_magics));
1878 dqhead.dqh_magic = cpu_to_le32(quota_magics[type]);
1879 dqhead.dqh_version = cpu_to_le32(quota_versions[type]);
1881 return cfs_user_write(f, (char *)&dqhead, sizeof(dqhead), &offset);
1884 static int create_new_quota_files(struct qchk_ctxt *qctxt,
1885 struct obd_quotactl *oqc)
1890 for (i = 0; i < MAXQUOTAS; i++) {
1891 struct if_dqinfo *info = qctxt->qckt_first_check[i]?
1892 NULL : &qctxt->qckt_dqinfo[i];
1894 const char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1896 if (!Q_TYPESET(oqc, i))
1899 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1901 file = filp_open(name[i], O_RDWR | O_CREAT | O_TRUNC, 0644);
1904 CERROR("can't create %s file: rc = %d\n",
1909 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1910 CERROR("file %s is not regular", name[i]);
1911 filp_close(file, 0);
1912 GOTO(out, rc = -EINVAL);
1915 ll_vfs_dq_drop(file->f_dentry->d_inode);
1917 rc = v3_write_dqheader(file, i);
1919 filp_close(file, 0);
1923 rc = v3_write_dqinfo(file, i, info);
1924 filp_close(file, 0);
1934 static int commit_chkquot(struct super_block *sb, struct qchk_ctxt *qctxt,
1935 struct chk_dqblk *cdqb)
1937 struct obd_quotactl *oqc;
1946 now = cfs_time_current_sec();
1948 if (cdqb->dqb_bsoftlimit &&
1949 toqb(cdqb->dqb_curspace) >= cdqb->dqb_bsoftlimit &&
1952 now + qctxt->qckt_dqinfo[cdqb->dqb_type].dqi_bgrace;
1954 if (cdqb->dqb_isoftlimit &&
1955 cdqb->dqb_curinodes >= cdqb->dqb_isoftlimit &&
1958 now + qctxt->qckt_dqinfo[cdqb->dqb_type].dqi_igrace;
1960 cdqb->dqb_valid = QIF_ALL;
1962 oqc->qc_cmd = Q_SETQUOTA;
1963 oqc->qc_type = cdqb->dqb_type;
1964 oqc->qc_id = cdqb->dqb_id;
1965 DQBLK_COPY(&oqc->qc_dqblk, cdqb);
1967 rc = fsfilt_ext3_quotactl(sb, oqc);
1972 static int prune_chkquots(struct super_block *sb,
1973 struct qchk_ctxt *qctxt, int error)
1975 struct chk_dqblk *cdqb, *tmp;
1978 cfs_list_for_each_entry_safe(cdqb, tmp, &qctxt->qckt_list, dqb_list) {
1980 rc = commit_chkquot(sb, qctxt, cdqb);
1984 cfs_hlist_del_init(&cdqb->dqb_hash);
1985 cfs_list_del(&cdqb->dqb_list);
1992 #ifndef EXT3_FEATURE_RO_COMPAT_GDT_CSUM
1993 #define EXT3_FEATURE_RO_COMPAT_GDT_CSUM 0x0010
1996 static int fsfilt_ext3_quotacheck(struct super_block *sb,
1997 struct obd_quotactl *oqc)
1999 struct ext3_sb_info *sbi = EXT3_SB(sb);
2000 int i, group, uninit_feat = 0;
2001 struct qchk_ctxt *qctxt;
2002 struct buffer_head *bitmap_bh = NULL;
2003 unsigned long ino, inode_inuse;
2004 struct inode *inode;
2008 /* turn on quota and read dqinfo if existed */
2009 OBD_ALLOC_PTR(qctxt);
2011 oqc->qc_stat = -ENOMEM;
2015 for (i = 0; i < NR_DQHASH; i++)
2016 CFS_INIT_HLIST_HEAD(&qctxt->qckt_hash[i]);
2017 CFS_INIT_LIST_HEAD(&qctxt->qckt_list);
2019 for (i = 0; i < MAXQUOTAS; i++) {
2020 if (!Q_TYPESET(oqc, i))
2023 rc = quota_onoff(sb, Q_QUOTAON, i, oqc->qc_id);
2024 if (!rc || rc == -EBUSY) {
2025 rc = read_old_dqinfo(sb, i, qctxt->qckt_dqinfo);
2028 } else if (rc == -ENOENT || rc == -EINVAL || rc == -EEXIST) {
2029 qctxt->qckt_first_check[i] = 1;
2034 if (EXT3_HAS_RO_COMPAT_FEATURE(sb, EXT3_FEATURE_RO_COMPAT_GDT_CSUM))
2035 /* This filesystem supports the uninit group feature */
2038 /* number of inodes that have been allocated */
2039 inode_inuse = sbi->s_inodes_per_group * sbi->s_groups_count -
2040 percpu_counter_sum(&sbi->s_freeinodes_counter);
2042 /* check quota and update in hash */
2043 for (group = 0; group < sbi->s_groups_count && inode_inuse > 0;
2045 unsigned long used_count = sbi->s_inodes_per_group;
2048 struct ext3_group_desc *desc;
2049 desc = get_group_desc(sb, group, NULL);
2053 /* we don't really need to take the group lock here,
2054 * but it may be useful if one day we support online
2056 #ifdef HAVE_EXT4_LDISKFS
2057 ext4_lock_group(sb, group);
2059 spin_lock(sb_bgl_lock(sbi, group));
2061 if (desc->bg_flags & cpu_to_le16(EXT3_BG_INODE_UNINIT)) {
2062 /* no inode in use in this group, just skip it */
2063 #ifdef HAVE_EXT4_LDISKFS
2064 ext3_unlock_group(sb, group);
2066 spin_unlock(sb_bgl_lock(sbi, group));
2071 used_count -= ext3_itable_unused_count(sb, desc);
2072 #ifdef HAVE_EXT4_LDISKFS
2073 ext3_unlock_group(sb, group);
2075 spin_unlock(sb_bgl_lock(sbi, group));
2079 ino = group * sbi->s_inodes_per_group + 1;
2080 bitmap_bh = ext3_read_inode_bitmap(sb, group);
2082 CERROR("%s: ext3_read_inode_bitmap group %d failed\n",
2088 while (i < used_count &&
2089 (i = ext3_find_next_bit(bitmap_bh->b_data,
2090 used_count, i)) < used_count) {
2093 ino = i + group * sbi->s_inodes_per_group;
2094 if (ino < sbi->s_first_ino)
2096 #if defined(HAVE_EXT4_LDISKFS) || !defined(HAVE_READ_INODE_IN_SBOPS)
2097 inode = ext3_iget(sb, ino);
2099 inode = iget(sb, ino);
2101 if (!inode || IS_ERR(inode))
2104 rc = add_inode_quota(inode, qctxt, oqc);
2114 /* read old quota limits from old quota file. (only for the user
2115 * has limits but hasn't file) */
2116 #ifdef HAVE_QUOTA_SUPPORT
2117 for (i = 0; i < MAXQUOTAS; i++) {
2119 struct dquot_id *dqid, *tmp;
2121 if (!Q_TYPESET(oqc, i))
2124 if (qctxt->qckt_first_check[i])
2128 LASSERT(sb_dqopt(sb)->files[i] != NULL);
2129 CFS_INIT_LIST_HEAD(&id_list);
2130 #ifndef KERNEL_SUPPORTS_QUOTA_READ
2131 rc = lustre_get_qids(sb_dqopt(sb)->files[i], NULL, i, &id_list);
2133 rc = lustre_get_qids(NULL, sb_dqopt(sb)->files[i], i, &id_list);
2136 CERROR("read old limits failed. (rc:%d)\n", rc);
2138 cfs_list_for_each_entry_safe(dqid, tmp, &id_list, di_link) {
2139 cfs_list_del_init(&dqid->di_link);
2142 cqget(sb, qctxt->qckt_hash, &qctxt->qckt_list,
2144 qctxt->qckt_first_check[i]);
2149 /* turn off quota cause we are to dump chk_dqblk to files */
2150 quota_onoff(sb, Q_QUOTAOFF, oqc->qc_type, oqc->qc_id);
2152 rc = create_new_quota_files(qctxt, oqc);
2156 /* we use vfs functions to set dqblk, so turn quota on */
2157 rc = quota_onoff(sb, Q_QUOTAON, oqc->qc_type, oqc->qc_id);
2159 /* dump and free chk_dqblk */
2160 rc = prune_chkquots(sb, qctxt, rc);
2161 OBD_FREE_PTR(qctxt);
2163 /* turn off quota, `lfs quotacheck` will turn on when all
2164 * nodes quotacheck finish. */
2165 quota_onoff(sb, Q_QUOTAOFF, oqc->qc_type, oqc->qc_id);
2169 CERROR("quotacheck failed: rc = %d\n", rc);
2174 static int fsfilt_ext3_quotainfo(struct lustre_quota_info *lqi, int type,
2180 if (lqi->qi_files[type] == NULL) {
2181 CERROR("operate qinfo before it's enabled!\n");
2187 rc = lustre_check_quota_file(lqi, type);
2190 rc = lustre_read_quota_info(lqi, type);
2193 rc = lustre_write_quota_info(lqi, type);
2195 case QFILE_INIT_INFO:
2196 rc = lustre_init_quota_info(lqi, type);
2200 CERROR("quota CONVERT command is not supported\n");
2204 CERROR("Unsupported admin quota file cmd %d\n"
2205 "Are lquota.ko and fsfilt_ldiskfs.ko modules in sync?\n",
2212 static int fsfilt_ext3_qids(struct file *file, struct inode *inode, int type,
2215 return lustre_get_qids(file, inode, type, list);
2218 static int fsfilt_ext3_dquot(struct lustre_dquot *dquot, int cmd)
2223 if (dquot->dq_info->qi_files[dquot->dq_type] == NULL) {
2224 CERROR("operate dquot before it's enabled!\n");
2229 case QFILE_RD_DQUOT:
2230 rc = lustre_read_dquot(dquot);
2232 case QFILE_WR_DQUOT:
2233 if (dquot->dq_dqb.dqb_ihardlimit ||
2234 dquot->dq_dqb.dqb_isoftlimit ||
2235 dquot->dq_dqb.dqb_bhardlimit ||
2236 dquot->dq_dqb.dqb_bsoftlimit)
2237 cfs_clear_bit(DQ_FAKE_B, &dquot->dq_flags);
2239 cfs_set_bit(DQ_FAKE_B, &dquot->dq_flags);
2241 rc = lustre_commit_dquot(dquot);
2246 CERROR("Unsupported admin quota file cmd %d\n", cmd);
2253 static int fsfilt_ext3_get_mblk(struct super_block *sb, int *count,
2254 struct inode *inode, int frags)
2256 #ifdef EXT3_EXT_HAS_NO_TREE
2257 struct ext3_ext_base *base = inode;
2259 struct ext3_extents_tree tree;
2260 struct ext3_ext_base *base = &tree;
2262 ext3_init_tree_desc(base, inode);
2264 /* for an ost_write request, it needs <#fragments> * <tree depth + 1>
2265 * metablocks at maxium b=16542 */
2266 *count = frags * (EXT_DEPTH(base) + 1) * EXT3_BLOCK_SIZE(sb);
2272 lvfs_sbdev_type fsfilt_ext3_journal_sbdev(struct super_block *sb)
2274 return (EXT3_SB(sb)->journal_bdev);
2276 EXPORT_SYMBOL(fsfilt_ext3_journal_sbdev);
2278 ssize_t lustre_read_quota(struct file *f, struct inode *inode, int type,
2279 char *buf, int count, loff_t pos)
2285 CERROR("lustre_read_quota failed for no quota file!\n");
2286 libcfs_debug_dumpstack(NULL);
2290 /* Support for both adm and op quota files must be provided */
2292 rc = fsfilt_ext3_read_record(f, buf, count, &p);
2293 rc = rc < 0 ? rc : p - pos;
2295 struct super_block *sb = inode->i_sb;
2296 rc = sb->s_op->quota_read(sb, type, buf, count, pos);
2301 ssize_t lustre_write_quota(struct file *f, char *buf, int count, loff_t pos)
2306 /* Only adm quota files are supported, op updates are handled by vfs */
2307 rc = fsfilt_ext3_write_record(f, buf, count, &p, 0);
2308 rc = rc < 0 ? rc : p - pos;
2313 void *lustre_quota_journal_start(struct inode *inode, int delete)
2316 unsigned block_count;
2319 /* each indirect block (+4) may become free, attaching to the
2320 * header list of free blocks (+1); the data block (+1) may
2321 * become a free block (+0) or a block with free dqentries (+0) */
2322 block_count = (4 + 1) + 1;
2323 handle = ext3_journal_start(inode,
2324 block_count*FSFILT_DATA_TRANS_BLOCKS(inode->i_sb)+2);
2326 /* indirect blocks are touched (+4), each causes file expansion (+0) or
2327 * freeblk reusage with a header update (+1); dqentry is either reused
2328 * causing update of the entry block (+1), prev (+1) and next (+1) or
2329 * a new block allocation (+1) with a header update (+1) */
2330 block_count = (4 + 1) + 3;
2331 handle = ext3_journal_start(inode,
2332 block_count*FSFILT_DATA_TRANS_BLOCKS(inode->i_sb)+2);
2339 void lustre_quota_journal_stop(void *handle)
2341 ext3_journal_stop((handle_t *)handle);
2344 static int ll_decode_fh_accept(void *context, struct dentry *de)
2349 #ifdef HAVE_EXPORTFS_DECODE_FH
2350 # define ll_exportfs_decode_fh(mnt, fid, len, type, acceptable, context) \
2351 exportfs_decode_fh(mnt, (struct fid*)(fid), len, type, \
2352 acceptable, context)
2354 # define ll_exportfs_decode_fh(mnt, fid, len, type, acceptable, context) \
2355 export_op_default.decode_fh((mnt)->mnt_sb, &(fid)->ino, len, \
2356 type, acceptable, context)
2357 # define FILEID_INO32_GEN 1
2358 extern struct export_operations export_op_default;
2361 struct dentry *fsfilt_ext3_fid2dentry(struct vfsmount *mnt,
2362 struct fsfilt_fid *fid, int ignore_gen)
2364 struct inode *inode;
2365 struct dentry *result;
2367 result = ll_exportfs_decode_fh(mnt, fid, 2, FILEID_INO32_GEN,
2368 ll_decode_fh_accept, NULL);
2369 if (IS_ERR(result)) {
2370 CDEBUG(D_DENTRY, "%s of %u/%u failed %ld\n", __func__,
2371 fid->ino, fid->gen, PTR_ERR(result));
2375 CDEBUG(D_DENTRY, "%s of %u/%u succeeded\n", __func__,
2376 fid->ino, fid->gen);
2377 inode = result->d_inode;
2381 if (inode->i_nlink == 0 &&
2382 inode->i_mode == 0 && LTIME_S(inode->i_ctime) == 0) {
2383 LCONSOLE_WARN("Found inode with zero nlink, mode and"
2384 " ctime -- this may indicate disk "
2385 "corruption (inode: %lu, link: %lu, "
2386 "count: %d)\n", inode->i_ino,
2387 (unsigned long)inode->i_nlink,
2388 atomic_read(&inode->i_count));
2391 if (fid->gen && inode->i_generation != fid->gen) {
2392 /* we didn't find the right inode.. */
2393 CDEBUG(D_INODE, "found wrong generation: inode %lu, link: %lu, "
2394 "count: %d, generation %u/%u\n",
2395 inode->i_ino, (unsigned long)inode->i_nlink,
2396 atomic_read(&inode->i_count), inode->i_generation,
2404 return ERR_PTR(-ENOENT);
2407 static struct fsfilt_operations fsfilt_ext3_ops = {
2409 .fs_owner = THIS_MODULE,
2410 .fs_getlabel = fsfilt_ext3_get_label,
2411 .fs_setlabel = fsfilt_ext3_set_label,
2412 .fs_uuid = fsfilt_ext3_uuid,
2413 .fs_start = fsfilt_ext3_start,
2414 .fs_brw_start = fsfilt_ext3_brw_start,
2415 .fs_extend = fsfilt_ext3_extend,
2416 .fs_commit = fsfilt_ext3_commit,
2417 .fs_commit_async = fsfilt_ext3_commit_async,
2418 .fs_commit_wait = fsfilt_ext3_commit_wait,
2419 .fs_setattr = fsfilt_ext3_setattr,
2420 .fs_iocontrol = fsfilt_ext3_iocontrol,
2421 .fs_set_md = fsfilt_ext3_set_md,
2422 .fs_get_md = fsfilt_ext3_get_md,
2423 .fs_readpage = fsfilt_ext3_readpage,
2424 .fs_add_journal_cb = fsfilt_ext3_add_journal_cb,
2425 .fs_statfs = fsfilt_ext3_statfs,
2426 .fs_sync = fsfilt_ext3_sync,
2427 .fs_map_inode_pages = fsfilt_ext3_map_inode_pages,
2428 .fs_write_record = fsfilt_ext3_write_record,
2429 .fs_read_record = fsfilt_ext3_read_record,
2430 .fs_setup = fsfilt_ext3_setup,
2431 .fs_send_bio = fsfilt_ext3_send_bio,
2432 .fs_get_op_len = fsfilt_ext3_get_op_len,
2433 #ifdef HAVE_DISK_INODE_VERSION
2434 .fs_get_version = fsfilt_ext3_get_version,
2435 .fs_set_version = fsfilt_ext3_set_version,
2437 #ifdef HAVE_QUOTA_SUPPORT
2438 .fs_quotactl = fsfilt_ext3_quotactl,
2439 .fs_quotacheck = fsfilt_ext3_quotacheck,
2440 .fs_quotainfo = fsfilt_ext3_quotainfo,
2441 .fs_qids = fsfilt_ext3_qids,
2442 .fs_dquot = fsfilt_ext3_dquot,
2443 .fs_get_mblk = fsfilt_ext3_get_mblk,
2445 .fs_journal_sbdev = fsfilt_ext3_journal_sbdev,
2446 .fs_fid2dentry = fsfilt_ext3_fid2dentry,
2449 static int __init fsfilt_ext3_init(void)
2453 fcb_cache = cfs_mem_cache_create("fsfilt_ext3_fcb",
2454 sizeof(struct fsfilt_cb_data), 0, 0);
2456 CERROR("error allocating fsfilt journal callback cache\n");
2457 GOTO(out, rc = -ENOMEM);
2460 rc = fsfilt_register_ops(&fsfilt_ext3_ops);
2463 int err = cfs_mem_cache_destroy(fcb_cache);
2464 LASSERTF(err == 0, "error destroying new cache: rc %d\n", err);
2470 static void __exit fsfilt_ext3_exit(void)
2474 fsfilt_unregister_ops(&fsfilt_ext3_ops);
2475 rc = cfs_mem_cache_destroy(fcb_cache);
2476 LASSERTF(rc == 0, "couldn't destroy fcb_cache slab\n");
2479 module_init(fsfilt_ext3_init);
2480 module_exit(fsfilt_ext3_exit);
2482 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2483 MODULE_DESCRIPTION("Lustre ext3 Filesystem Helper v0.1");
2484 MODULE_LICENSE("GPL");