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, 2012, Whamcloud, Inc.
35 * This file is part of Lustre, http://www.lustre.org/
36 * Lustre is a trademark of Sun Microsystems, Inc.
38 * lustre/lvfs/fsfilt_ext3.c
40 * Author: Andreas Dilger <adilger@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_FILTER
45 #include <linux/init.h>
46 #include <linux/module.h>
48 #include <linux/slab.h>
49 #include <linux/pagemap.h>
50 #include <linux/quotaops.h>
51 #ifdef HAVE_LINUX_EXPORTFS_H
52 #include <linux/exportfs.h>
54 #ifdef HAVE_EXT4_LDISKFS
55 #include <ext4/ext4.h>
56 #include <ext4/ext4_jbd2.h>
58 #include <linux/jbd.h>
59 #include <linux/ext3_fs.h>
60 #include <linux/ext3_jbd.h>
62 #include <linux/version.h>
63 #include <linux/bitops.h>
64 #include <linux/quota.h>
66 # include <linux/quotaio_v2.h>
67 #elif defined(HAVE_FS_QUOTA_QUOTAIO_H)
68 # include <quota/quotaio_v2.h>
69 # include <quota/quota_tree.h>
70 # define V2_DQTREEOFF QT_TREEOFF
71 #elif defined(HAVE_FS_QUOTAIO_H)
72 # include <quotaio_v2.h>
73 # include <quota_tree.h>
74 # define V2_DQTREEOFF QT_TREEOFF
75 # define V2_INITQVERSIONS_R1 V2_INITQVERSIONS
79 #define QFMT_LUSTRE QFMT_VFS_V1
81 #define QFMT_LUSTRE QFMT_VFS_V0
84 #if defined(HAVE_EXT3_XATTR_H)
85 # include <ext3/xattr.h>
86 #elif !defined(EXT3_XATTR_INDEX_TRUSTED)
87 /* ext3 xattr.h not available in rh style kernel-devel rpm */
88 /* CHAOS kernel-devel package will not include fs/ldiskfs/xattr.h */
89 # define EXT3_XATTR_INDEX_TRUSTED 4
90 extern int ext3_xattr_get(struct inode *, int, const char *, void *, size_t);
91 extern int ext3_xattr_set_handle(handle_t *, struct inode *, int, const char *, const void *, size_t, int);
94 #include <libcfs/libcfs.h>
95 #include <lustre_fsfilt.h>
97 #include <lustre_quota.h>
98 #include <linux/lustre_compat25.h>
99 #include <linux/lprocfs_status.h>
101 #ifdef HAVE_EXT4_LDISKFS
102 #include <ext4/ext4_extents.h>
104 #include <linux/ext3_extents.h>
107 #include "lustre_quota_fmt.h"
109 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
110 #define FSFILT_DATA_TRANS_BLOCKS(sb) EXT3_DATA_TRANS_BLOCKS
111 #define FSFILT_DELETE_TRANS_BLOCKS(sb) EXT3_DELETE_TRANS_BLOCKS
113 #define FSFILT_DATA_TRANS_BLOCKS(sb) EXT3_DATA_TRANS_BLOCKS(sb)
114 #define FSFILT_DELETE_TRANS_BLOCKS(sb) EXT3_DELETE_TRANS_BLOCKS(sb)
117 /* for kernels 2.6.18 and later */
118 #define FSFILT_SINGLEDATA_TRANS_BLOCKS(sb) EXT3_SINGLEDATA_TRANS_BLOCKS(sb)
120 #define fsfilt_ext3_ext_insert_extent(handle, inode, path, newext, flag) \
121 ext3_ext_insert_extent(handle, inode, path, newext, flag)
123 #define ext3_mb_discard_inode_preallocations(inode) \
124 ext3_discard_preallocations(inode)
126 #ifdef HAVE_EXT4_LDISKFS
127 #define fsfilt_log_start_commit(journal, tid) jbd2_log_start_commit(journal, tid)
128 #define fsfilt_log_wait_commit(journal, tid) jbd2_log_wait_commit(journal, tid)
130 #define fsfilt_log_start_commit(journal, tid) log_start_commit(journal, tid)
131 #define fsfilt_log_wait_commit(journal, tid) log_wait_commit(journal, tid)
132 #define ext_pblock(ex) le32_to_cpu((ex)->ee_start)
133 #define ext3_ext_store_pblock(ex, pblock) ((ex)->ee_start = cpu_to_le32(pblock))
134 #define ext3_inode_bitmap(sb,desc) le32_to_cpu((desc)->bg_inode_bitmap)
137 #ifdef HAVE_EXT4_JOURNAL_CALLBACK_ADD
138 # define journal_callback ext4_journal_cb_entry
139 # define fsfilt_journal_callback_set(handle, func, jcb) \
140 ext4_journal_callback_add(handle, func, jcb)
141 #elif defined(HAVE_JBD2_JOURNAL_CALLBACK_SET)
142 # define fsfilt_journal_callback_set(handle, func, jcb) \
143 jbd2_journal_callback_set(handle, func, jcb)
144 #elif defined(HAVE_JOURNAL_CALLBACK_SET)
145 # define fsfilt_journal_callback_set(handle, func, jcb) \
146 journal_callback_set(handle, func, jcb)
148 # error missing journal commit callback
149 #endif /* HAVE_EXT4_JOURNAL_CALLBACK_ADD */
151 static cfs_mem_cache_t *fcb_cache;
153 struct fsfilt_cb_data {
154 struct journal_callback cb_jcb; /* jbd private data - MUST BE FIRST */
155 fsfilt_cb_t cb_func; /* MDS/OBD completion function */
156 struct obd_device *cb_obd; /* MDS/OBD completion device */
157 __u64 cb_last_rcvd; /* MDS/OST last committed operation */
158 void *cb_data; /* MDS/OST completion function data */
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 return EXT3_I(inode)->i_fs_version;
219 static void set_i_version(struct inode *inode, __u64 new_version)
221 (EXT3_I(inode))->i_fs_version = new_version;
225 * Get the 64-bit version for an inode.
227 static __u64 fsfilt_ext3_get_version(struct inode *inode)
229 CDEBUG(D_INFO, "Get version "LPX64" for inode %lu\n",
230 get_i_version(inode), inode->i_ino);
231 return get_i_version(inode);
235 * Set the 64-bit version and return the old version.
237 static __u64 fsfilt_ext3_set_version(struct inode *inode, __u64 new_version)
239 __u64 old_version = get_i_version(inode);
241 CDEBUG(D_INFO, "Set version "LPX64" (old "LPX64") for inode %lu\n",
242 new_version, old_version, inode->i_ino);
243 set_i_version(inode, new_version);
244 /* version is set after all inode operations are finished, so we should
245 * mark it dirty here */
246 inode->i_sb->s_op->dirty_inode(inode);
253 * We don't currently need any additional blocks for rmdir and
254 * unlink transactions because we are storing the OST oa_id inside
255 * the inode (which we will be changing anyways as part of this
258 static void *fsfilt_ext3_start(struct inode *inode, int op, void *desc_private,
261 /* For updates to the last received file */
262 int nblocks = FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb);
266 if (current->journal_info) {
267 CDEBUG(D_INODE, "increasing refcount on %p\n",
268 current->journal_info);
273 case FSFILT_OP_RMDIR:
274 case FSFILT_OP_UNLINK:
275 /* delete one file + create/update logs for each stripe */
276 nblocks += FSFILT_DELETE_TRANS_BLOCKS(inode->i_sb);
277 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
278 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
280 case FSFILT_OP_RENAME:
281 /* modify additional directory */
282 nblocks += FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb);
284 case FSFILT_OP_SYMLINK:
285 /* additional block + block bitmap + GDT for long symlink */
288 case FSFILT_OP_CREATE: {
289 #if defined(EXT3_EXTENTS_FL) && defined(EXT3_INDEX_FL) && !defined(HAVE_EXT4_LDISKFS)
292 if (!test_opt(inode->i_sb, EXTENTS)) {
294 } else if (((EXT3_I(inode)->i_flags &
295 cpu_to_le32(EXT3_EXTENTS_FL | EXT3_INDEX_FL)) ==
296 cpu_to_le32(EXT3_EXTENTS_FL | EXT3_INDEX_FL))) {
297 CWARN("extent-mapped directory found with "
298 "ext3-based ldiskfs - contact "
299 "http://bugs.whamcloud.com/\n");
306 case FSFILT_OP_MKDIR:
307 case FSFILT_OP_MKNOD:
308 /* modify one inode + block bitmap + GDT */
312 /* modify parent directory */
313 nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
314 FSFILT_DATA_TRANS_BLOCKS(inode->i_sb);
315 /* create/update logs for each stripe */
316 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
317 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
319 case FSFILT_OP_SETATTR:
320 /* Setattr on inode */
322 nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
323 FSFILT_DATA_TRANS_BLOCKS(inode->i_sb);
324 /* quota chown log for each stripe */
325 nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
326 FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
328 case FSFILT_OP_CANCEL_UNLINK:
329 /* blocks for log header bitmap update OR
330 * blocks for catalog header bitmap update + unlink of logs */
331 nblocks = (LLOG_CHUNK_SIZE >> inode->i_blkbits) +
332 FSFILT_DELETE_TRANS_BLOCKS(inode->i_sb) * logs;
334 default: CERROR("unknown transaction start op %d\n", op);
338 LASSERT(current->journal_info == desc_private);
339 journal = EXT3_SB(inode->i_sb)->s_journal;
340 if (nblocks > journal->j_max_transaction_buffers) {
341 CWARN("too many credits %d for op %ux%u using %d instead\n",
342 nblocks, op, logs, journal->j_max_transaction_buffers);
343 nblocks = journal->j_max_transaction_buffers;
347 LASSERTF(nblocks > 0, "can't start %d credit transaction\n", nblocks);
348 handle = ext3_journal_start(inode, nblocks);
351 LASSERT(current->journal_info == handle);
353 CERROR("error starting handle for op %u (%u credits): rc %ld\n",
354 op, nblocks, PTR_ERR(handle));
359 * Calculate the number of buffer credits needed to write multiple pages in
360 * a single ext3 transaction. No, this shouldn't be here, but as yet ext3
361 * doesn't have a nice API for calculating this sort of thing in advance.
363 * See comment above ext3_writepage_trans_blocks for details. We assume
364 * no data journaling is being done, but it does allow for all of the pages
365 * being non-contiguous. If we are guaranteed contiguous pages we could
366 * reduce the number of (d)indirect blocks a lot.
368 * With N blocks per page and P pages, for each inode we have at most:
370 * min(N*P, blocksize/4 + 1) dindirect blocks
373 * For the entire filesystem, we have at most:
374 * min(sum(nindir + P), ngroups) bitmap blocks (from the above)
375 * min(sum(nindir + P), gdblocks) group descriptor blocks (from the above)
376 * objcount inode blocks
378 * 2 * EXT3_SINGLEDATA_TRANS_BLOCKS for the quota files
380 * 1 EXT3_DATA_TRANS_BLOCKS for the last_rcvd update.
382 static int fsfilt_ext3_credits_needed(int objcount, struct fsfilt_objinfo *fso,
383 int niocount, struct niobuf_local *nb)
385 struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
387 const int blockpp = 1 << (CFS_PAGE_SHIFT - sb->s_blocksize_bits);
388 int nbitmaps = 0, ngdblocks;
389 int needed = objcount + 1; /* inodes + superblock */
392 for (i = 0, j = 0; i < objcount; i++, fso++) {
393 /* two or more dindirect blocks in case we cross boundary */
394 int ndind = (long)((nb[j + fso->fso_bufcnt - 1].offset -
396 sb->s_blocksize_bits) /
397 (EXT3_ADDR_PER_BLOCK(sb) * EXT3_ADDR_PER_BLOCK(sb));
398 nbitmaps += min(fso->fso_bufcnt, ndind > 0 ? ndind : 2);
400 /* leaf, indirect, tindirect blocks for first block */
401 nbitmaps += blockpp + 2;
403 j += fso->fso_bufcnt;
406 next_indir = nb[0].offset +
407 (EXT3_ADDR_PER_BLOCK(sb) << sb->s_blocksize_bits);
408 for (i = 1; i < niocount; i++) {
409 if (nb[i].offset >= next_indir) {
410 nbitmaps++; /* additional indirect */
411 next_indir = nb[i].offset +
412 (EXT3_ADDR_PER_BLOCK(sb)<<sb->s_blocksize_bits);
413 } else if (nb[i].offset != nb[i - 1].offset + sb->s_blocksize) {
414 nbitmaps++; /* additional indirect */
416 nbitmaps += blockpp; /* each leaf in different group? */
419 ngdblocks = nbitmaps;
420 if (nbitmaps > EXT3_SB(sb)->s_groups_count)
421 nbitmaps = EXT3_SB(sb)->s_groups_count;
422 if (ngdblocks > EXT3_SB(sb)->s_gdb_count)
423 ngdblocks = EXT3_SB(sb)->s_gdb_count;
425 needed += nbitmaps + ngdblocks;
427 /* last_rcvd update */
428 needed += FSFILT_DATA_TRANS_BLOCKS(sb);
430 #if defined(CONFIG_QUOTA)
431 /* We assume that there will be 1 bit set in s_dquot.flags for each
432 * quota file that is active. This is at least true for now.
434 needed += hweight32(ll_sb_any_quota_active(sb)) *
435 FSFILT_SINGLEDATA_TRANS_BLOCKS(sb);
441 /* We have to start a huge journal transaction here to hold all of the
442 * metadata for the pages being written here. This is necessitated by
443 * the fact that we do lots of prepare_write operations before we do
444 * any of the matching commit_write operations, so even if we split
445 * up to use "smaller" transactions none of them could complete until
446 * all of them were opened. By having a single journal transaction,
447 * we eliminate duplicate reservations for common blocks like the
448 * superblock and group descriptors or bitmaps.
450 * We will start the transaction here, but each prepare_write will
451 * add a refcount to the transaction, and each commit_write will
452 * remove a refcount. The transaction will be closed when all of
453 * the pages have been written.
455 static void *fsfilt_ext3_brw_start(int objcount, struct fsfilt_objinfo *fso,
456 int niocount, struct niobuf_local *nb,
457 void *desc_private, int logs)
464 LASSERT(current->journal_info == desc_private);
465 journal = EXT3_SB(fso->fso_dentry->d_inode->i_sb)->s_journal;
466 needed = fsfilt_ext3_credits_needed(objcount, fso, niocount, nb);
468 /* The number of blocks we could _possibly_ dirty can very large.
469 * We reduce our request if it is absurd (and we couldn't get that
470 * many credits for a single handle anyways).
472 * At some point we have to limit the size of I/Os sent at one time,
473 * increase the size of the journal, or we have to calculate the
474 * actual journal requirements more carefully by checking all of
475 * the blocks instead of being maximally pessimistic. It remains to
476 * be seen if this is a real problem or not.
478 if (needed > journal->j_max_transaction_buffers) {
479 CERROR("want too many journal credits (%d) using %d instead\n",
480 needed, journal->j_max_transaction_buffers);
481 needed = journal->j_max_transaction_buffers;
484 LASSERTF(needed > 0, "can't start %d credit transaction\n", needed);
485 handle = ext3_journal_start(fso->fso_dentry->d_inode, needed);
486 if (IS_ERR(handle)) {
487 CERROR("can't get handle for %d credits: rc = %ld\n", needed,
490 LASSERT(handle->h_buffer_credits >= needed);
491 LASSERT(current->journal_info == handle);
497 static int fsfilt_ext3_extend(struct inode *inode, unsigned int nblocks,void *h)
499 handle_t *handle = h;
501 /* fsfilt_extend called with nblocks = 0 for testing in special cases */
503 handle->h_buffer_credits = 0;
504 CWARN("setting credits of handle %p to zero by request\n", h);
507 if (handle->h_buffer_credits > nblocks)
509 if (ext3_journal_extend(handle, nblocks) == 0)
512 ext3_mark_inode_dirty(handle, inode);
513 return ext3_journal_restart(handle, nblocks);
516 static int fsfilt_ext3_commit(struct inode *inode, void *h, int force_sync)
519 handle_t *handle = h;
521 LASSERT(current->journal_info == handle);
523 handle->h_sync = 1; /* recovery likes this */
525 rc = ext3_journal_stop(handle);
530 static int fsfilt_ext3_commit_async(struct inode *inode, void *h,
534 transaction_t *transaction;
535 handle_t *handle = h;
539 LASSERT(current->journal_info == handle);
541 transaction = handle->h_transaction;
542 journal = transaction->t_journal;
543 tid = transaction->t_tid;
544 /* we don't want to be blocked */
546 rc = ext3_journal_stop(handle);
548 CERROR("error while stopping transaction: %d\n", rc);
551 fsfilt_log_start_commit(journal, tid);
553 *wait_handle = (void *) tid;
554 CDEBUG(D_INODE, "commit async: %lu\n", (unsigned long) tid);
558 static int fsfilt_ext3_commit_wait(struct inode *inode, void *h)
560 journal_t *journal = EXT3_JOURNAL(inode);
561 tid_t tid = (tid_t)(long)h;
563 CDEBUG(D_INODE, "commit wait: %lu\n", (unsigned long) tid);
564 if (unlikely(is_journal_aborted(journal)))
567 fsfilt_log_wait_commit(EXT3_JOURNAL(inode), tid);
569 if (unlikely(is_journal_aborted(journal)))
574 static int fsfilt_ext3_setattr(struct dentry *dentry, void *handle,
575 struct iattr *iattr, int do_trunc)
577 struct inode *inode = dentry->d_inode;
580 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0)
581 /* Try to correct for a bug in 2.1.0 (LU-221) that caused negative
582 * timestamps to appear to be in the far future, due old timestamp
583 * being stored on disk as an unsigned value. This fixes up any
584 * bad values held by the client before storing them on disk,
585 * and ensures any timestamp updates are correct. LU-1042 */
586 if (unlikely(LTIME_S(inode->i_atime) == LU221_BAD_TIME &&
587 !(iattr->ia_valid & ATTR_ATIME))) {
588 iattr->ia_valid |= ATTR_ATIME;
589 LTIME_S(iattr->ia_atime) = 0;
591 if (unlikely(LTIME_S(inode->i_mtime) == LU221_BAD_TIME &&
592 !(iattr->ia_valid & ATTR_MTIME))) {
593 iattr->ia_valid |= ATTR_MTIME;
594 LTIME_S(iattr->ia_mtime) = 0;
596 if (unlikely((LTIME_S(inode->i_ctime) == LU221_BAD_TIME ||
597 LTIME_S(inode->i_ctime) == 0) &&
598 !(iattr->ia_valid & ATTR_CTIME))) {
599 iattr->ia_valid |= ATTR_CTIME;
600 LTIME_S(iattr->ia_ctime) = 0;
603 #warning "remove old LU-221/LU-1042 workaround code"
606 /* When initializating timestamps for new inodes, use the filesystem
607 * mkfs time for ctime to avoid e2fsck ibadness incorrectly thinking
608 * that this is potentially an invalid inode. Files with an old ctime
609 * migrated to a newly-formatted OST with a newer s_mkfs_time will not
610 * hit this check, since it is only for ctime == 0. LU-1010/LU-1042 */
611 if ((iattr->ia_valid & ATTR_CTIME) && LTIME_S(iattr->ia_ctime) == 0)
612 LTIME_S(iattr->ia_ctime) =
613 EXT4_SB(inode->i_sb)->s_es->s_mkfs_time;
615 /* Avoid marking the inode dirty on the superblock list unnecessarily.
616 * We are already writing the inode to disk as part of this
617 * transaction and want to avoid a lot of extra inode writeout
618 * later on. b=9828 */
619 if (iattr->ia_valid & ATTR_SIZE && !do_trunc) {
620 /* ATTR_SIZE would invoke truncate: clear it */
621 iattr->ia_valid &= ~ATTR_SIZE;
622 EXT3_I(inode)->i_disksize = iattr->ia_size;
623 i_size_write(inode, iattr->ia_size);
625 if (iattr->ia_valid & ATTR_UID)
626 inode->i_uid = iattr->ia_uid;
627 if (iattr->ia_valid & ATTR_GID)
628 inode->i_gid = iattr->ia_gid;
629 if (iattr->ia_valid & ATTR_ATIME)
630 inode->i_atime = iattr->ia_atime;
631 if (iattr->ia_valid & ATTR_MTIME)
632 inode->i_mtime = iattr->ia_mtime;
633 if (iattr->ia_valid & ATTR_CTIME)
634 inode->i_ctime = iattr->ia_ctime;
635 if (iattr->ia_valid & ATTR_MODE) {
636 inode->i_mode = iattr->ia_mode;
638 if (!cfs_curproc_is_in_groups(inode->i_gid) &&
639 !cfs_capable(CFS_CAP_FSETID))
640 inode->i_mode &= ~S_ISGID;
643 inode->i_sb->s_op->dirty_inode(inode);
648 /* Don't allow setattr to change file type */
649 if (iattr->ia_valid & ATTR_MODE)
650 iattr->ia_mode = (inode->i_mode & S_IFMT) |
651 (iattr->ia_mode & ~S_IFMT);
653 /* We set these flags on the client, but have already checked perms
654 * so don't confuse inode_change_ok. */
655 iattr->ia_valid &= ~TIMES_SET_FLAGS;
657 if (inode->i_op->setattr) {
658 rc = inode->i_op->setattr(dentry, iattr);
660 #ifndef HAVE_SIMPLE_SETATTR /* simple_setattr() already call it */
661 rc = inode_change_ok(inode, iattr);
664 rc = simple_setattr(dentry, iattr);
671 static int fsfilt_ext3_iocontrol(struct inode *inode, struct file *file,
672 unsigned int cmd, unsigned long arg)
677 /* FIXME: Can't do this because of nested transaction deadlock */
678 if (cmd == EXT3_IOC_SETFLAGS) {
679 /* We can't enable data journaling on OST objects, because
680 * this forces the transaction to be closed in order to
681 * flush the journal, but the caller will already have a
682 * compound transaction open to update the last_rcvd file,
683 * and this thread would deadlock trying to set the flag. */
684 if ((*(int *)arg) & EXT3_JOURNAL_DATA_FL) {
685 CERROR("can't set data journal flag on file\n");
688 /* Because the MDS does not see the EXTENTS_FL set on the
689 * OST objects, mask this flag into all set flags. It is
690 * not legal to clear this flag in any case, so we are not
691 * changing the functionality by doing this. b=22911 */
692 *(int *)arg |= EXT3_I(inode)->i_flags & EXT3_EXTENTS_FL;
695 #ifdef HAVE_EXT4_LDISKFS
696 /* ext4_ioctl does not have a inode argument */
697 if (inode->i_fop->unlocked_ioctl)
698 rc = inode->i_fop->unlocked_ioctl(file, cmd, arg);
700 if (inode->i_fop->ioctl)
701 rc = inode->i_fop->ioctl(inode, file, cmd, arg);
709 static int fsfilt_ext3_set_md(struct inode *inode, void *handle,
710 void *lmm, int lmm_size, const char *name)
714 LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
716 rc = ext3_xattr_set_handle(handle, inode, EXT3_XATTR_INDEX_TRUSTED,
717 name, lmm, lmm_size, XATTR_NO_CTIME);
720 if (rc && rc != -EROFS)
721 CERROR("error adding MD data to inode %lu: rc = %d\n",
726 /* Must be called with i_mutex held */
727 static int fsfilt_ext3_get_md(struct inode *inode, void *lmm, int lmm_size,
732 LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
734 rc = ext3_xattr_get(inode, EXT3_XATTR_INDEX_TRUSTED,
735 name, lmm, lmm_size);
737 /* This gives us the MD size */
739 return (rc == -ENODATA) ? 0 : rc;
742 CDEBUG(D_INFO, "error getting EA %d/%s from inode %lu: rc %d\n",
743 EXT3_XATTR_INDEX_TRUSTED, name,
745 memset(lmm, 0, lmm_size);
746 return (rc == -ENODATA) ? 0 : rc;
752 static int fsfilt_ext3_send_bio(int rw, struct inode *inode, struct bio *bio)
758 static ssize_t fsfilt_ext3_readpage(struct file *file, char *buf, size_t count,
761 struct inode *inode = file->f_dentry->d_inode;
764 if (S_ISREG(inode->i_mode))
765 rc = file->f_op->read(file, buf, count, off);
767 const int blkbits = inode->i_sb->s_blocksize_bits;
768 const int blksize = inode->i_sb->s_blocksize;
770 CDEBUG(D_EXT2, "reading %lu at dir %lu+%llu\n",
771 (unsigned long)count, inode->i_ino, *off);
773 struct buffer_head *bh;
776 if (*off < i_size_read(inode)) {
779 bh = ext3_bread(NULL, inode, *off >> blkbits,
782 CDEBUG(D_EXT2, "read %u@%llu\n", blksize, *off);
785 memcpy(buf, bh->b_data, blksize);
788 /* XXX in theory we should just fake
789 * this buffer and continue like ext3,
790 * especially if this is a partial read
792 CERROR("error read dir %lu+%llu: %d\n",
793 inode->i_ino, *off, err);
798 struct ext3_dir_entry_2 *fake = (void *)buf;
800 CDEBUG(D_EXT2, "fake %u@%llu\n", blksize, *off);
801 memset(fake, 0, sizeof(*fake));
802 fake->rec_len = cpu_to_le16(blksize);
814 #ifdef HAVE_EXT4_JOURNAL_CALLBACK_ADD
815 static void fsfilt_ext3_cb_func(struct super_block *sb,
816 struct journal_callback *jcb, int error)
818 static void fsfilt_ext3_cb_func(struct journal_callback *jcb, int error)
821 struct fsfilt_cb_data *fcb = container_of(jcb, typeof(*fcb), cb_jcb);
823 fcb->cb_func(fcb->cb_obd, fcb->cb_last_rcvd, fcb->cb_data, error);
825 OBD_SLAB_FREE(fcb, fcb_cache, sizeof *fcb);
828 static int fsfilt_ext3_add_journal_cb(struct obd_device *obd, __u64 last_rcvd,
829 void *handle, fsfilt_cb_t cb_func,
832 struct fsfilt_cb_data *fcb;
834 OBD_SLAB_ALLOC_PTR_GFP(fcb, fcb_cache, CFS_ALLOC_IO);
838 fcb->cb_func = cb_func;
840 fcb->cb_last_rcvd = last_rcvd;
841 fcb->cb_data = cb_data;
843 CDEBUG(D_EXT2, "set callback for last_rcvd: "LPD64"\n", last_rcvd);
844 fsfilt_journal_callback_set(handle, fsfilt_ext3_cb_func, &fcb->cb_jcb);
849 static int fsfilt_ext3_statfs(struct super_block *sb, struct obd_statfs *osfs)
854 memset(&sfs, 0, sizeof(sfs));
855 rc = ll_do_statfs(sb, &sfs);
856 statfs_pack(osfs, &sfs);
860 static int fsfilt_ext3_sync(struct super_block *sb)
862 return ext3_force_commit(sb);
865 #ifndef EXT3_EXTENTS_FL
866 #define EXT3_EXTENTS_FL 0x00080000 /* Inode uses extents */
869 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
870 # define fsfilt_up_truncate_sem(inode) up(&LDISKFS_I(inode)->truncate_sem);
871 # define fsfilt_down_truncate_sem(inode) down(&LDISKFS_I(inode)->truncate_sem);
873 # ifdef HAVE_EXT4_LDISKFS
874 # define fsfilt_up_truncate_sem(inode) do{ }while(0)
875 # define fsfilt_down_truncate_sem(inode) do{ }while(0)
877 # define fsfilt_up_truncate_sem(inode) mutex_unlock(&EXT3_I(inode)->truncate_mutex)
878 # define fsfilt_down_truncate_sem(inode) mutex_lock(&EXT3_I(inode)->truncate_mutex)
883 #define EXT_ASSERT(cond) BUG_ON(!(cond))
886 #ifdef EXT3_EXT_HAS_NO_TREE
887 /* for kernels 2.6.18 and later */
888 #ifdef HAVE_EXT4_LDISKFS
889 #define EXT_GENERATION(inode) (EXT4_I(inode)->i_ext_generation)
891 #define EXT_GENERATION(inode) ext_generation(inode)
893 #define ext3_ext_base inode
894 #define ext3_ext_base2inode(inode) (inode)
895 #define EXT_DEPTH(inode) ext_depth(inode)
896 #define fsfilt_ext3_ext_walk_space(inode, block, num, cb, cbdata) \
897 ext3_ext_walk_space(inode, block, num, cb, cbdata);
899 #define ext3_ext_base ext3_extents_tree
900 #define ext3_ext_base2inode(tree) (tree->inode)
901 #define fsfilt_ext3_ext_walk_space(tree, block, num, cb, cbdata) \
902 ext3_ext_walk_space(tree, block, num, cb);
905 #include <linux/lustre_version.h>
908 unsigned long *blocks;
916 static long ext3_ext_find_goal(struct inode *inode, struct ext3_ext_path *path,
917 unsigned long block, int *aflags)
919 struct ext3_inode_info *ei = EXT3_I(inode);
920 unsigned long bg_start;
921 unsigned long colour;
925 struct ext3_extent *ex;
926 depth = path->p_depth;
928 /* try to predict block placement */
929 if ((ex = path[depth].p_ext))
930 return ext_pblock(ex) + (block - le32_to_cpu(ex->ee_block));
932 /* it looks index is empty
933 * try to find starting from index itself */
934 if (path[depth].p_bh)
935 return path[depth].p_bh->b_blocknr;
938 /* OK. use inode's group */
939 bg_start = (ei->i_block_group * EXT3_BLOCKS_PER_GROUP(inode->i_sb)) +
940 le32_to_cpu(EXT3_SB(inode->i_sb)->s_es->s_first_data_block);
941 colour = (current->pid % 16) *
942 (EXT3_BLOCKS_PER_GROUP(inode->i_sb) / 16);
943 return bg_start + colour + block;
946 #define ll_unmap_underlying_metadata(sb, blocknr) \
947 unmap_underlying_metadata((sb)->s_bdev, blocknr)
949 #ifndef EXT3_MB_HINT_GROUP_ALLOC
950 static unsigned long new_blocks(handle_t *handle, struct ext3_ext_base *base,
951 struct ext3_ext_path *path, unsigned long block,
952 unsigned long *count, int *err)
954 unsigned long pblock, goal;
956 struct inode *inode = ext3_ext_base2inode(base);
958 goal = ext3_ext_find_goal(inode, path, block, &aflags);
959 aflags |= 2; /* block have been already reserved */
960 pblock = ext3_mb_new_blocks(handle, inode, goal, count, aflags, err);
965 static unsigned long new_blocks(handle_t *handle, struct ext3_ext_base *base,
966 struct ext3_ext_path *path, unsigned long block,
967 unsigned long *count, int *err)
969 struct inode *inode = ext3_ext_base2inode(base);
970 struct ext3_allocation_request ar;
971 unsigned long pblock;
974 /* find neighbour allocated blocks */
976 *err = ext3_ext_search_left(base, path, &ar.lleft, &ar.pleft);
980 *err = ext3_ext_search_right(base, path, &ar.lright, &ar.pright);
984 /* allocate new block */
985 ar.goal = ext3_ext_find_goal(inode, path, block, &aflags);
989 ar.flags = EXT3_MB_HINT_DATA;
990 pblock = ext3_mb_new_blocks(handle, &ar, err);
996 #ifdef EXT3_EXT_HAS_NO_TREE
997 static int ext3_ext_new_extent_cb(struct ext3_ext_base *base,
998 struct ext3_ext_path *path,
999 struct ext3_ext_cache *cex,
1000 #ifdef HAVE_EXT_PREPARE_CB_EXTENT
1001 struct ext3_extent *ex,
1005 struct bpointers *bp = cbdata;
1007 static int ext3_ext_new_extent_cb(struct ext3_ext_base *base,
1008 struct ext3_ext_path *path,
1009 struct ext3_ext_cache *cex
1010 #ifdef HAVE_EXT_PREPARE_CB_EXTENT
1011 , struct ext3_extent *ex
1015 struct bpointers *bp = base->private;
1017 struct inode *inode = ext3_ext_base2inode(base);
1018 struct ext3_extent nex;
1019 unsigned long pblock;
1022 unsigned long count;
1025 i = EXT_DEPTH(base);
1026 EXT_ASSERT(path[i].p_hdr);
1027 LASSERTF(i == path->p_depth ||
1028 EXT_GENERATION(base) != path[0].p_generation,
1029 "base vs path extent depth:%d != %d, generation:%lu == %lu\n",
1030 i, path->p_depth, EXT_GENERATION(base), path[0].p_generation);
1032 if (cex->ec_type == EXT3_EXT_CACHE_EXTENT) {
1037 if (bp->create == 0) {
1039 if (cex->ec_block < bp->start)
1040 i = bp->start - cex->ec_block;
1041 if (i >= cex->ec_len)
1042 CERROR("nothing to do?! i = %d, e_num = %u\n",
1044 for (; i < cex->ec_len && bp->num; i++) {
1053 return EXT_CONTINUE;
1056 tgen = EXT_GENERATION(base);
1057 count = ext3_ext_calc_credits_for_insert(base, path);
1058 fsfilt_up_truncate_sem(inode);
1060 handle = ext3_journal_start(inode, count+EXT3_ALLOC_NEEDED+1);
1061 if (IS_ERR(handle)) {
1062 fsfilt_down_truncate_sem(inode);
1063 return PTR_ERR(handle);
1066 fsfilt_down_truncate_sem(inode);
1067 if (tgen != EXT_GENERATION(base)) {
1068 /* the tree has changed. so path can be invalid at moment */
1069 ext3_journal_stop(handle);
1073 #if defined(HAVE_EXT4_LDISKFS)
1074 /* In 2.6.32 kernel, ext4_ext_walk_space()'s callback func is not
1075 * protected by i_data_sem as whole. so we patch it to store
1076 * generation to path and now verify the tree hasn't changed */
1077 down_write((&EXT4_I(inode)->i_data_sem));
1079 /* validate extent, make sure the extent tree does not changed */
1080 if (EXT_GENERATION(base) != path[0].p_generation) {
1081 /* cex is invalid, try again */
1082 up_write(&EXT4_I(inode)->i_data_sem);
1083 ext3_journal_stop(handle);
1088 count = cex->ec_len;
1089 pblock = new_blocks(handle, base, path, cex->ec_block, &count, &err);
1092 EXT_ASSERT(count <= cex->ec_len);
1094 /* insert new extent */
1095 nex.ee_block = cpu_to_le32(cex->ec_block);
1096 ext3_ext_store_pblock(&nex, pblock);
1097 nex.ee_len = cpu_to_le16(count);
1098 err = fsfilt_ext3_ext_insert_extent(handle, base, path, &nex, 0);
1100 /* free data blocks we just allocated */
1101 /* not a good idea to call discard here directly,
1102 * but otherwise we'd need to call it every free() */
1103 #ifdef EXT3_MB_HINT_GROUP_ALLOC
1104 ext3_mb_discard_inode_preallocations(inode);
1106 ext3_free_blocks(handle, inode, ext_pblock(&nex),
1107 cpu_to_le16(nex.ee_len), 0);
1112 * Putting len of the actual extent we just inserted,
1113 * we are asking ext3_ext_walk_space() to continue
1114 * scaning after that block
1116 cex->ec_len = le16_to_cpu(nex.ee_len);
1117 cex->ec_start = ext_pblock(&nex);
1118 BUG_ON(le16_to_cpu(nex.ee_len) == 0);
1119 BUG_ON(le32_to_cpu(nex.ee_block) != cex->ec_block);
1122 #if defined(HAVE_EXT4_LDISKFS)
1123 up_write((&EXT4_I(inode)->i_data_sem));
1125 ext3_journal_stop(handle);
1130 CERROR("hmm. why do we find this extent?\n");
1131 CERROR("initial space: %lu:%u\n",
1132 bp->start, bp->init_num);
1133 CERROR("current extent: %u/%u/%llu %d\n",
1134 cex->ec_block, cex->ec_len,
1135 (unsigned long long)cex->ec_start,
1139 if (cex->ec_block < bp->start)
1140 i = bp->start - cex->ec_block;
1141 if (i >= cex->ec_len)
1142 CERROR("nothing to do?! i = %d, e_num = %u\n",
1144 for (; i < cex->ec_len && bp->num; i++) {
1145 *(bp->blocks) = cex->ec_start + i;
1146 if (cex->ec_type == EXT3_EXT_CACHE_EXTENT) {
1150 /* unmap any possible underlying metadata from
1151 * the block device mapping. bug 6998. */
1152 ll_unmap_underlying_metadata(inode->i_sb,
1164 int fsfilt_map_nblocks(struct inode *inode, unsigned long block,
1165 unsigned long num, unsigned long *blocks,
1166 int *created, int create)
1168 #ifdef EXT3_EXT_HAS_NO_TREE
1169 struct ext3_ext_base *base = inode;
1171 struct ext3_extents_tree tree;
1172 struct ext3_ext_base *base = &tree;
1174 struct bpointers bp;
1177 CDEBUG(D_OTHER, "blocks %lu-%lu requested for inode %u\n",
1178 block, block + num - 1, (unsigned) inode->i_ino);
1180 #ifndef EXT3_EXT_HAS_NO_TREE
1181 ext3_init_tree_desc(base, inode);
1185 bp.created = created;
1187 bp.init_num = bp.num = num;
1190 fsfilt_down_truncate_sem(inode);
1191 err = fsfilt_ext3_ext_walk_space(base, block, num,
1192 ext3_ext_new_extent_cb, &bp);
1193 ext3_ext_invalidate_cache(base);
1194 fsfilt_up_truncate_sem(inode);
1199 int fsfilt_ext3_map_ext_inode_pages(struct inode *inode, struct page **page,
1200 int pages, unsigned long *blocks,
1201 int *created, int create)
1203 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
1205 struct page *fp = NULL;
1208 CDEBUG(D_OTHER, "inode %lu: map %d pages from %lu\n",
1209 inode->i_ino, pages, (*page)->index);
1211 /* pages are sorted already. so, we just have to find
1212 * contig. space and process them properly */
1215 /* start new extent */
1220 } else if (fp->index + clen == (*page)->index) {
1221 /* continue the extent */
1228 /* process found extent */
1229 rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
1230 clen * blocks_per_page, blocks,
1235 /* look for next extent */
1237 blocks += blocks_per_page * clen;
1238 created += blocks_per_page * clen;
1242 rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
1243 clen * blocks_per_page, blocks,
1249 extern int ext3_map_inode_page(struct inode *inode, struct page *page,
1250 unsigned long *blocks, int *created, int create);
1251 int fsfilt_ext3_map_bm_inode_pages(struct inode *inode, struct page **page,
1252 int pages, unsigned long *blocks,
1253 int *created, int create)
1255 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
1259 for (i = 0, cr = created, b = blocks; i < pages; i++, page++) {
1260 rc = ext3_map_inode_page(inode, *page, b, cr, create);
1262 CERROR("ino %lu, blk %lu cr %u create %d: rc %d\n",
1263 inode->i_ino, *b, *cr, create, rc);
1267 b += blocks_per_page;
1268 cr += blocks_per_page;
1273 int fsfilt_ext3_map_inode_pages(struct inode *inode, struct page **page,
1274 int pages, unsigned long *blocks,
1275 int *created, int create,
1276 cfs_semaphore_t *optional_sem)
1280 if (EXT3_I(inode)->i_flags & EXT3_EXTENTS_FL) {
1281 rc = fsfilt_ext3_map_ext_inode_pages(inode, page, pages,
1282 blocks, created, create);
1285 if (optional_sem != NULL)
1286 cfs_down(optional_sem);
1287 rc = fsfilt_ext3_map_bm_inode_pages(inode, page, pages, blocks,
1289 if (optional_sem != NULL)
1290 cfs_up(optional_sem);
1295 int fsfilt_ext3_read(struct inode *inode, void *buf, int size, loff_t *offs)
1297 unsigned long block;
1298 struct buffer_head *bh;
1299 int err, blocksize, csize, boffs, osize = size;
1301 /* prevent reading after eof */
1303 if (i_size_read(inode) < *offs + size) {
1304 size = i_size_read(inode) - *offs;
1305 cfs_unlock_kernel();
1307 CDEBUG(D_EXT2, "size %llu is too short for read @%llu\n",
1308 i_size_read(inode), *offs);
1310 } else if (size == 0) {
1314 cfs_unlock_kernel();
1317 blocksize = 1 << inode->i_blkbits;
1320 block = *offs >> inode->i_blkbits;
1321 boffs = *offs & (blocksize - 1);
1322 csize = min(blocksize - boffs, size);
1323 bh = ext3_bread(NULL, inode, block, 0, &err);
1325 CERROR("can't read block: %d\n", err);
1329 memcpy(buf, bh->b_data + boffs, csize);
1338 EXPORT_SYMBOL(fsfilt_ext3_read);
1340 static int fsfilt_ext3_read_record(struct file * file, void *buf,
1341 int size, loff_t *offs)
1344 rc = fsfilt_ext3_read(file->f_dentry->d_inode, buf, size, offs);
1350 int fsfilt_ext3_write_handle(struct inode *inode, void *buf, int bufsize,
1351 loff_t *offs, handle_t *handle)
1353 struct buffer_head *bh = NULL;
1354 loff_t old_size = i_size_read(inode), offset = *offs;
1355 loff_t new_size = i_size_read(inode);
1356 unsigned long block;
1357 int err = 0, blocksize = 1 << inode->i_blkbits, size, boffs;
1359 while (bufsize > 0) {
1363 block = offset >> inode->i_blkbits;
1364 boffs = offset & (blocksize - 1);
1365 size = min(blocksize - boffs, bufsize);
1366 bh = ext3_bread(handle, inode, block, 1, &err);
1368 CERROR("can't read/create block: %d\n", err);
1372 err = ext3_journal_get_write_access(handle, bh);
1374 CERROR("journal_get_write_access() returned error %d\n",
1378 LASSERT(bh->b_data + boffs + size <= bh->b_data + bh->b_size);
1379 memcpy(bh->b_data + boffs, buf, size);
1380 err = ext3_journal_dirty_metadata(handle, bh);
1382 CERROR("journal_dirty_metadata() returned error %d\n",
1386 if (offset + size > new_size)
1387 new_size = offset + size;
1395 /* correct in-core and on-disk sizes */
1396 if (new_size > i_size_read(inode)) {
1398 if (new_size > i_size_read(inode))
1399 i_size_write(inode, new_size);
1400 if (i_size_read(inode) > EXT3_I(inode)->i_disksize)
1401 EXT3_I(inode)->i_disksize = i_size_read(inode);
1402 if (i_size_read(inode) > old_size)
1403 mark_inode_dirty(inode);
1404 cfs_unlock_kernel();
1411 EXPORT_SYMBOL(fsfilt_ext3_write_handle);
1413 static int fsfilt_ext3_write_record(struct file *file, void *buf, int bufsize,
1414 loff_t *offs, int force_sync)
1416 struct inode *inode = file->f_dentry->d_inode;
1418 int err, block_count = 0, blocksize;
1420 /* Determine how many transaction credits are needed */
1421 blocksize = 1 << inode->i_blkbits;
1422 block_count = (*offs & (blocksize - 1)) + bufsize;
1423 block_count = (block_count + blocksize - 1) >> inode->i_blkbits;
1425 handle = ext3_journal_start(inode,
1426 block_count * FSFILT_DATA_TRANS_BLOCKS(inode->i_sb) + 2);
1427 if (IS_ERR(handle)) {
1428 CERROR("can't start transaction for %d blocks (%d bytes)\n",
1429 block_count * FSFILT_DATA_TRANS_BLOCKS(inode->i_sb) + 2, bufsize);
1430 return PTR_ERR(handle);
1433 err = fsfilt_ext3_write_handle(inode, buf, bufsize, offs, handle);
1435 if (!err && force_sync)
1436 handle->h_sync = 1; /* recovery likes this */
1438 ext3_journal_stop(handle);
1443 static int fsfilt_ext3_setup(struct super_block *sb)
1445 #if ((LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,6)) && \
1446 defined(HAVE_QUOTA_SUPPORT)) || defined(S_PDIROPS)
1447 struct ext3_sb_info *sbi = EXT3_SB(sb);
1449 sbi->dx_lock = fsfilt_ext3_dx_lock;
1450 sbi->dx_unlock = fsfilt_ext3_dx_unlock;
1454 CWARN("Enabling PDIROPS\n");
1455 set_opt(sbi->s_mount_opt, PDIROPS);
1456 sb->s_flags |= S_PDIROPS;
1458 if (!EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_DIR_INDEX))
1459 CWARN("filesystem doesn't have dir_index feature enabled\n");
1460 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,6)) && defined(HAVE_QUOTA_SUPPORT)
1461 /* enable journaled quota support */
1462 /* kfreed in ext3_put_super() */
1463 sbi->s_qf_names[USRQUOTA] = kstrdup("lquota.user.reserved", GFP_KERNEL);
1464 if (!sbi->s_qf_names[USRQUOTA])
1466 sbi->s_qf_names[GRPQUOTA] = kstrdup("lquota.group.reserved", GFP_KERNEL);
1467 if (!sbi->s_qf_names[GRPQUOTA]) {
1468 kfree(sbi->s_qf_names[USRQUOTA]);
1469 sbi->s_qf_names[USRQUOTA] = NULL;
1472 sbi->s_jquota_fmt = QFMT_LUSTRE;
1473 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13))
1474 set_opt(sbi->s_mount_opt, QUOTA);
1480 /* If fso is NULL, op is FSFILT operation, otherwise op is number of fso
1481 objects. Logs is number of logfiles to update */
1482 static int fsfilt_ext3_get_op_len(int op, struct fsfilt_objinfo *fso, int logs)
1486 case FSFILT_OP_CREATE:
1487 /* directory leaf, index & indirect & EA*/
1488 return 4 + 3 * logs;
1489 case FSFILT_OP_UNLINK:
1495 struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
1496 int blockpp = 1 << (CFS_PAGE_SHIFT - sb->s_blocksize_bits);
1497 int addrpp = EXT3_ADDR_PER_BLOCK(sb) * blockpp;
1498 for (i = 0; i < op; i++, fso++) {
1499 int nblocks = fso->fso_bufcnt * blockpp;
1500 int ndindirect = min(nblocks, addrpp + 1);
1501 int nindir = nblocks + ndindirect + 1;
1505 return needed + 3 * logs;
1511 #ifdef HAVE_QUOTA_SUPPORT
1512 #define DQINFO_COPY(out, in) \
1514 Q_COPY(out, in, dqi_bgrace); \
1515 Q_COPY(out, in, dqi_igrace); \
1516 Q_COPY(out, in, dqi_flags); \
1517 Q_COPY(out, in, dqi_valid); \
1520 #define DQBLK_COPY(out, in) \
1522 Q_COPY(out, in, dqb_bhardlimit); \
1523 Q_COPY(out, in, dqb_bsoftlimit); \
1524 Q_COPY(out, in, dqb_curspace); \
1525 Q_COPY(out, in, dqb_ihardlimit); \
1526 Q_COPY(out, in, dqb_isoftlimit); \
1527 Q_COPY(out, in, dqb_curinodes); \
1528 Q_COPY(out, in, dqb_btime); \
1529 Q_COPY(out, in, dqb_itime); \
1530 Q_COPY(out, in, dqb_valid); \
1533 static int fsfilt_ext3_quotactl(struct super_block *sb,
1534 struct obd_quotactl *oqc)
1536 int i, rc = 0, error = 0;
1537 const struct quotactl_ops *qcop;
1538 struct if_dqinfo *info;
1539 struct if_dqblk *dqblk;
1545 OBD_ALLOC_PTR(info);
1548 OBD_ALLOC_PTR(dqblk);
1554 DQINFO_COPY(info, &oqc->qc_dqinfo);
1555 DQBLK_COPY(dqblk, &oqc->qc_dqblk);
1558 if (oqc->qc_cmd == Q_QUOTAON || oqc->qc_cmd == Q_QUOTAOFF) {
1559 for (i = 0; i < MAXQUOTAS; i++) {
1560 if (!Q_TYPESET(oqc, i))
1563 if (oqc->qc_cmd == Q_QUOTAON) {
1564 char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1566 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1568 rc = ll_quota_on(sb, i, QFMT_LUSTRE,
1570 } else if (oqc->qc_cmd == Q_QUOTAOFF) {
1571 rc = ll_quota_off(sb, i, 0);
1579 GOTO(out, rc ?: error);
1582 switch (oqc->qc_cmd) {
1585 if (!qcop->get_info)
1586 GOTO(out, rc = -ENOSYS);
1587 rc = qcop->get_info(sb, oqc->qc_type, info);
1591 if (!qcop->set_dqblk)
1592 GOTO(out, rc = -ENOSYS);
1593 rc = qcop->set_dqblk(sb, oqc->qc_type, oqc->qc_id, dqblk);
1597 if (!qcop->get_dqblk)
1598 GOTO(out, rc = -ENOSYS);
1599 rc = qcop->get_dqblk(sb, oqc->qc_type, oqc->qc_id, dqblk);
1601 dqblk->dqb_valid = QIF_LIMITS | QIF_USAGE;
1604 if (!sb->s_qcop->quota_sync)
1605 GOTO(out, rc = -ENOSYS);
1606 qcop->quota_sync(sb, oqc->qc_type);
1609 CDEBUG(D_WARNING, "invalidating operational quota files\n");
1610 for (i = 0; i < MAXQUOTAS; i++) {
1612 char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1614 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1616 if (!Q_TYPESET(oqc, i))
1619 fp = filp_open(name[i], O_CREAT | O_TRUNC | O_RDWR, 0644);
1622 CERROR("error invalidating operational quota file"
1623 " %s (rc:%d)\n", name[i], rc);
1631 CERROR("unsupported quotactl command: %d\n", oqc->qc_cmd);
1635 DQINFO_COPY(&oqc->qc_dqinfo, info);
1636 DQBLK_COPY(&oqc->qc_dqblk, dqblk);
1639 OBD_FREE_PTR(dqblk);
1642 CDEBUG(D_QUOTA, "quotactl command %#x, id %u, type %u "
1644 oqc->qc_cmd, oqc->qc_id, oqc->qc_type, rc);
1649 cfs_hlist_node_t dqb_hash; /** quotacheck hash */
1650 cfs_list_t dqb_list; /** in list also */
1651 qid_t dqb_id; /** uid/gid */
1652 short dqb_type; /** USRQUOTA/GRPQUOTA */
1653 qsize_t dqb_bhardlimit; /** block hard limit */
1654 qsize_t dqb_bsoftlimit; /** block soft limit */
1655 qsize_t dqb_curspace; /** current space */
1656 qsize_t dqb_ihardlimit; /** inode hard limit */
1657 qsize_t dqb_isoftlimit; /** inode soft limit */
1658 qsize_t dqb_curinodes; /** current inodes */
1659 obd_time dqb_btime; /** block grace time */
1660 obd_time dqb_itime; /** inode grace time */
1661 __u32 dqb_valid; /** flag for above fields */
1664 static inline unsigned int chkquot_hash(qid_t id, int type)
1665 __attribute__((__const__));
1667 static inline unsigned int chkquot_hash(qid_t id, int type)
1669 return (id * (MAXQUOTAS - type)) % NR_DQHASH;
1672 static inline struct chk_dqblk *
1673 find_chkquot(cfs_hlist_head_t *head, qid_t id, int type)
1675 cfs_hlist_node_t *node;
1676 struct chk_dqblk *cdqb;
1678 cfs_hlist_for_each(node, head) {
1679 cdqb = cfs_hlist_entry(node, struct chk_dqblk, dqb_hash);
1680 if (cdqb->dqb_id == id && cdqb->dqb_type == type)
1687 static struct chk_dqblk *alloc_chkquot(qid_t id, int type)
1689 struct chk_dqblk *cdqb;
1691 OBD_ALLOC_PTR(cdqb);
1693 CFS_INIT_HLIST_NODE(&cdqb->dqb_hash);
1694 CFS_INIT_LIST_HEAD(&cdqb->dqb_list);
1696 cdqb->dqb_type = type;
1702 static struct chk_dqblk *
1703 cqget(struct super_block *sb, cfs_hlist_head_t *hash,
1704 cfs_list_t *list, qid_t id, int type, int first_check)
1706 cfs_hlist_head_t *head = hash + chkquot_hash(id, type);
1707 struct if_dqblk dqb;
1708 struct chk_dqblk *cdqb;
1711 cdqb = find_chkquot(head, id, type);
1715 cdqb = alloc_chkquot(id, type);
1720 rc = sb->s_qcop->get_dqblk(sb, type, id, &dqb);
1722 CERROR("get_dqblk of id %u, type %d failed: %d\n",
1725 DQBLK_COPY(cdqb, &dqb);
1726 cdqb->dqb_curspace = 0;
1727 cdqb->dqb_curinodes = 0;
1731 cfs_hlist_add_head(&cdqb->dqb_hash, head);
1732 cfs_list_add_tail(&cdqb->dqb_list, list);
1737 static inline int quota_onoff(struct super_block *sb, int cmd, int type, int qfmt)
1739 struct obd_quotactl *oqctl;
1742 OBD_ALLOC_PTR(oqctl);
1746 oqctl->qc_cmd = cmd;
1747 oqctl->qc_id = qfmt;
1748 oqctl->qc_type = type;
1749 rc = fsfilt_ext3_quotactl(sb, oqctl);
1751 OBD_FREE_PTR(oqctl);
1755 static inline int read_old_dqinfo(struct super_block *sb, int type,
1756 struct if_dqinfo *dqinfo)
1758 struct obd_quotactl *oqctl;
1762 OBD_ALLOC_PTR(oqctl);
1766 oqctl->qc_cmd = Q_GETINFO;
1767 oqctl->qc_type = type;
1768 rc = fsfilt_ext3_quotactl(sb, oqctl);
1770 ((struct obd_dqinfo *)dqinfo)[type] = oqctl->qc_dqinfo;
1772 OBD_FREE_PTR(oqctl);
1776 #ifndef HAVE_EXT4_LDISKFS
1777 static inline struct ext3_group_desc *
1778 get_group_desc(struct super_block *sb, int group, struct buffer_head **bh)
1780 unsigned long desc_block, desc;
1781 struct ext3_group_desc *gdp;
1783 desc_block = group / EXT3_DESC_PER_BLOCK(sb);
1784 desc = group % EXT3_DESC_PER_BLOCK(sb);
1785 gdp = (struct ext3_group_desc *)
1786 EXT3_SB(sb)->s_group_desc[desc_block]->b_data;
1791 static inline struct buffer_head *
1792 ext3_read_inode_bitmap(struct super_block *sb, unsigned long group)
1794 struct ext3_group_desc *desc;
1795 struct buffer_head *bh;
1797 desc = get_group_desc(sb, group, NULL);
1798 bh = sb_bread(sb, ext3_inode_bitmap(sb, desc));
1802 static __u32 ext3_itable_unused_count(struct super_block *sb,
1803 struct ext3_group_desc *bg) {
1804 return le16_to_cpu(bg->bg_itable_unused);
1807 #define get_group_desc ext3_get_group_desc
1811 cfs_hlist_head_t qckt_hash[NR_DQHASH]; /* quotacheck hash */
1812 cfs_list_t qckt_list; /* quotacheck list */
1813 int qckt_first_check[MAXQUOTAS]; /* 1 if no old quotafile */
1814 struct if_dqinfo qckt_dqinfo[MAXQUOTAS]; /* old dqinfo */
1817 static int add_inode_quota(struct inode *inode, struct qchk_ctxt *qctxt,
1818 struct obd_quotactl *oqc)
1820 struct chk_dqblk *cdqb[MAXQUOTAS] = { NULL, };
1822 qid_t qid[MAXQUOTAS];
1828 qid[USRQUOTA] = inode->i_uid;
1829 qid[GRPQUOTA] = inode->i_gid;
1831 if (S_ISDIR(inode->i_mode) ||
1832 S_ISREG(inode->i_mode) ||
1833 S_ISLNK(inode->i_mode))
1834 size = inode_get_bytes(inode);
1836 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
1837 if (!Q_TYPESET(oqc, cnt))
1840 cdqb[cnt] = cqget(inode->i_sb, qctxt->qckt_hash,
1841 &qctxt->qckt_list, qid[cnt], cnt,
1842 qctxt->qckt_first_check[cnt]);
1848 cdqb[cnt]->dqb_curspace += size;
1849 cdqb[cnt]->dqb_curinodes++;
1853 for (i = 0; i < cnt; i++) {
1854 if (!Q_TYPESET(oqc, i))
1857 cdqb[i]->dqb_curspace -= size;
1858 cdqb[i]->dqb_curinodes--;
1865 /* write dqinfo struct in a new quota file */
1866 static int v3_write_dqinfo(struct file *f, int type, struct if_dqinfo *info)
1868 struct v2_disk_dqinfo dqinfo;
1869 __u32 blocks = V2_DQTREEOFF + 1;
1870 loff_t offset = V2_DQINFOOFF;
1873 dqinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace);
1874 dqinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace);
1875 dqinfo.dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK &
1878 dqinfo.dqi_bgrace = cpu_to_le32(MAX_DQ_TIME);
1879 dqinfo.dqi_igrace = cpu_to_le32(MAX_IQ_TIME);
1880 dqinfo.dqi_flags = 0;
1883 dqinfo.dqi_blocks = cpu_to_le32(blocks);
1884 dqinfo.dqi_free_blk = 0;
1885 dqinfo.dqi_free_entry = 0;
1887 return cfs_user_write(f, (char *)&dqinfo, sizeof(dqinfo), &offset);
1890 static int v3_write_dqheader(struct file *f, int type)
1892 static const __u32 quota_magics[] = V2_INITQMAGICS;
1893 static const __u32 quota_versions[] = LUSTRE_INITQVERSIONS_V2;
1894 struct v2_disk_dqheader dqhead;
1897 CLASSERT(ARRAY_SIZE(quota_magics) == ARRAY_SIZE(quota_versions));
1898 LASSERT(0 <= type && type < ARRAY_SIZE(quota_magics));
1900 dqhead.dqh_magic = cpu_to_le32(quota_magics[type]);
1901 dqhead.dqh_version = cpu_to_le32(quota_versions[type]);
1903 return cfs_user_write(f, (char *)&dqhead, sizeof(dqhead), &offset);
1906 static int create_new_quota_files(struct qchk_ctxt *qctxt,
1907 struct obd_quotactl *oqc)
1912 for (i = 0; i < MAXQUOTAS; i++) {
1913 struct if_dqinfo *info = qctxt->qckt_first_check[i]?
1914 NULL : &qctxt->qckt_dqinfo[i];
1916 const char *name[MAXQUOTAS] = LUSTRE_OPQFILES_NAMES_V2;
1918 if (!Q_TYPESET(oqc, i))
1921 LASSERT(oqc->qc_id == LUSTRE_QUOTA_V2);
1923 file = filp_open(name[i], O_RDWR | O_CREAT | O_TRUNC, 0644);
1926 CERROR("can't create %s file: rc = %d\n",
1931 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1932 CERROR("file %s is not regular", name[i]);
1933 filp_close(file, 0);
1934 GOTO(out, rc = -EINVAL);
1937 ll_vfs_dq_drop(file->f_dentry->d_inode);
1939 rc = v3_write_dqheader(file, i);
1941 filp_close(file, 0);
1945 rc = v3_write_dqinfo(file, i, info);
1946 filp_close(file, 0);
1956 static int commit_chkquot(struct super_block *sb, struct qchk_ctxt *qctxt,
1957 struct chk_dqblk *cdqb)
1959 struct obd_quotactl *oqc;
1968 now = cfs_time_current_sec();
1970 if (cdqb->dqb_bsoftlimit &&
1971 toqb(cdqb->dqb_curspace) >= cdqb->dqb_bsoftlimit &&
1974 now + qctxt->qckt_dqinfo[cdqb->dqb_type].dqi_bgrace;
1976 if (cdqb->dqb_isoftlimit &&
1977 cdqb->dqb_curinodes >= cdqb->dqb_isoftlimit &&
1980 now + qctxt->qckt_dqinfo[cdqb->dqb_type].dqi_igrace;
1982 cdqb->dqb_valid = QIF_ALL;
1984 oqc->qc_cmd = Q_SETQUOTA;
1985 oqc->qc_type = cdqb->dqb_type;
1986 oqc->qc_id = cdqb->dqb_id;
1987 DQBLK_COPY(&oqc->qc_dqblk, cdqb);
1989 rc = fsfilt_ext3_quotactl(sb, oqc);
1994 static int prune_chkquots(struct super_block *sb,
1995 struct qchk_ctxt *qctxt, int error)
1997 struct chk_dqblk *cdqb, *tmp;
2000 cfs_list_for_each_entry_safe(cdqb, tmp, &qctxt->qckt_list, dqb_list) {
2002 rc = commit_chkquot(sb, qctxt, cdqb);
2006 cfs_hlist_del_init(&cdqb->dqb_hash);
2007 cfs_list_del(&cdqb->dqb_list);
2014 #ifndef EXT3_FEATURE_RO_COMPAT_GDT_CSUM
2015 #define EXT3_FEATURE_RO_COMPAT_GDT_CSUM 0x0010
2018 static int fsfilt_ext3_quotacheck(struct super_block *sb,
2019 struct obd_quotactl *oqc)
2021 struct ext3_sb_info *sbi = EXT3_SB(sb);
2022 int i, group, uninit_feat = 0;
2023 struct qchk_ctxt *qctxt;
2024 struct buffer_head *bitmap_bh = NULL;
2025 unsigned long ino, inode_inuse;
2026 struct inode *inode;
2030 /* turn on quota and read dqinfo if existed */
2031 OBD_ALLOC_PTR(qctxt);
2033 oqc->qc_stat = -ENOMEM;
2037 for (i = 0; i < NR_DQHASH; i++)
2038 CFS_INIT_HLIST_HEAD(&qctxt->qckt_hash[i]);
2039 CFS_INIT_LIST_HEAD(&qctxt->qckt_list);
2041 for (i = 0; i < MAXQUOTAS; i++) {
2042 if (!Q_TYPESET(oqc, i))
2045 rc = quota_onoff(sb, Q_QUOTAON, i, oqc->qc_id);
2046 if (!rc || rc == -EBUSY) {
2047 rc = read_old_dqinfo(sb, i, qctxt->qckt_dqinfo);
2050 } else if (rc == -ENOENT || rc == -EINVAL || rc == -EEXIST) {
2051 qctxt->qckt_first_check[i] = 1;
2056 if (EXT3_HAS_RO_COMPAT_FEATURE(sb, EXT3_FEATURE_RO_COMPAT_GDT_CSUM))
2057 /* This filesystem supports the uninit group feature */
2060 /* number of inodes that have been allocated */
2061 inode_inuse = sbi->s_inodes_per_group * sbi->s_groups_count -
2062 percpu_counter_sum(&sbi->s_freeinodes_counter);
2064 /* check quota and update in hash */
2065 for (group = 0; group < sbi->s_groups_count && inode_inuse > 0;
2067 unsigned long used_count = sbi->s_inodes_per_group;
2070 struct ext3_group_desc *desc;
2071 desc = get_group_desc(sb, group, NULL);
2075 /* we don't really need to take the group lock here,
2076 * but it may be useful if one day we support online
2078 #ifdef HAVE_EXT4_LDISKFS
2079 ext4_lock_group(sb, group);
2081 spin_lock(sb_bgl_lock(sbi, group));
2083 if (desc->bg_flags & cpu_to_le16(EXT3_BG_INODE_UNINIT)) {
2084 /* no inode in use in this group, just skip it */
2085 #ifdef HAVE_EXT4_LDISKFS
2086 ext3_unlock_group(sb, group);
2088 spin_unlock(sb_bgl_lock(sbi, group));
2093 used_count -= ext3_itable_unused_count(sb, desc);
2094 #ifdef HAVE_EXT4_LDISKFS
2095 ext3_unlock_group(sb, group);
2097 spin_unlock(sb_bgl_lock(sbi, group));
2101 ino = group * sbi->s_inodes_per_group + 1;
2102 bitmap_bh = ext3_read_inode_bitmap(sb, group);
2104 CERROR("%s: ext3_read_inode_bitmap group %d failed\n",
2110 while (i < used_count &&
2111 (i = ext3_find_next_bit(bitmap_bh->b_data,
2112 used_count, i)) < used_count) {
2115 ino = i + group * sbi->s_inodes_per_group;
2116 if (ino < sbi->s_first_ino)
2118 #if defined(HAVE_EXT4_LDISKFS) || !defined(HAVE_READ_INODE_IN_SBOPS)
2119 inode = ext3_iget(sb, ino);
2121 inode = iget(sb, ino);
2123 if (!inode || IS_ERR(inode))
2126 rc = add_inode_quota(inode, qctxt, oqc);
2136 /* read old quota limits from old quota file. (only for the user
2137 * has limits but hasn't file) */
2138 #ifdef HAVE_QUOTA_SUPPORT
2139 for (i = 0; i < MAXQUOTAS; i++) {
2141 struct dquot_id *dqid, *tmp;
2143 if (!Q_TYPESET(oqc, i))
2146 if (qctxt->qckt_first_check[i])
2150 LASSERT(sb_dqopt(sb)->files[i] != NULL);
2151 CFS_INIT_LIST_HEAD(&id_list);
2152 #ifndef KERNEL_SUPPORTS_QUOTA_READ
2153 rc = lustre_get_qids(sb_dqopt(sb)->files[i], NULL, i, &id_list);
2155 rc = lustre_get_qids(NULL, sb_dqopt(sb)->files[i], i, &id_list);
2158 CERROR("read old limits failed. (rc:%d)\n", rc);
2160 cfs_list_for_each_entry_safe(dqid, tmp, &id_list, di_link) {
2161 cfs_list_del_init(&dqid->di_link);
2164 cqget(sb, qctxt->qckt_hash, &qctxt->qckt_list,
2166 qctxt->qckt_first_check[i]);
2171 /* turn off quota cause we are to dump chk_dqblk to files */
2172 quota_onoff(sb, Q_QUOTAOFF, oqc->qc_type, oqc->qc_id);
2174 rc = create_new_quota_files(qctxt, oqc);
2178 /* we use vfs functions to set dqblk, so turn quota on */
2179 rc = quota_onoff(sb, Q_QUOTAON, oqc->qc_type, oqc->qc_id);
2181 /* dump and free chk_dqblk */
2182 rc = prune_chkquots(sb, qctxt, rc);
2183 OBD_FREE_PTR(qctxt);
2185 /* turn off quota, `lfs quotacheck` will turn on when all
2186 * nodes quotacheck finish. */
2187 quota_onoff(sb, Q_QUOTAOFF, oqc->qc_type, oqc->qc_id);
2191 CERROR("quotacheck failed: rc = %d\n", rc);
2196 static int fsfilt_ext3_quotainfo(struct lustre_quota_info *lqi, int type,
2202 if (lqi->qi_files[type] == NULL) {
2203 CERROR("operate qinfo before it's enabled!\n");
2209 rc = lustre_check_quota_file(lqi, type);
2212 rc = lustre_read_quota_info(lqi, type);
2215 rc = lustre_write_quota_info(lqi, type);
2217 case QFILE_INIT_INFO:
2218 rc = lustre_init_quota_info(lqi, type);
2222 CERROR("quota CONVERT command is not supported\n");
2226 CERROR("Unsupported admin quota file cmd %d\n"
2227 "Are lquota.ko and fsfilt_ldiskfs.ko modules in sync?\n",
2234 static int fsfilt_ext3_qids(struct file *file, struct inode *inode, int type,
2237 return lustre_get_qids(file, inode, type, list);
2240 static int fsfilt_ext3_dquot(struct lustre_dquot *dquot, int cmd)
2245 if (dquot->dq_info->qi_files[dquot->dq_type] == NULL) {
2246 CERROR("operate dquot before it's enabled!\n");
2251 case QFILE_RD_DQUOT:
2252 rc = lustre_read_dquot(dquot);
2254 case QFILE_WR_DQUOT:
2255 if (dquot->dq_dqb.dqb_ihardlimit ||
2256 dquot->dq_dqb.dqb_isoftlimit ||
2257 dquot->dq_dqb.dqb_bhardlimit ||
2258 dquot->dq_dqb.dqb_bsoftlimit)
2259 cfs_clear_bit(DQ_FAKE_B, &dquot->dq_flags);
2261 cfs_set_bit(DQ_FAKE_B, &dquot->dq_flags);
2263 rc = lustre_commit_dquot(dquot);
2268 CERROR("Unsupported admin quota file cmd %d\n", cmd);
2275 static int fsfilt_ext3_get_mblk(struct super_block *sb, int *count,
2276 struct inode *inode, int frags)
2278 #ifdef EXT3_EXT_HAS_NO_TREE
2279 struct ext3_ext_base *base = inode;
2281 struct ext3_extents_tree tree;
2282 struct ext3_ext_base *base = &tree;
2284 ext3_init_tree_desc(base, inode);
2286 /* for an ost_write request, it needs <#fragments> * <tree depth + 1>
2287 * metablocks at maxium b=16542 */
2288 *count = frags * (EXT_DEPTH(base) + 1) * EXT3_BLOCK_SIZE(sb);
2294 lvfs_sbdev_type fsfilt_ext3_journal_sbdev(struct super_block *sb)
2296 return (EXT3_SB(sb)->journal_bdev);
2298 EXPORT_SYMBOL(fsfilt_ext3_journal_sbdev);
2300 ssize_t lustre_read_quota(struct file *f, struct inode *inode, int type,
2301 char *buf, int count, loff_t pos)
2307 CERROR("lustre_read_quota failed for no quota file!\n");
2308 libcfs_debug_dumpstack(NULL);
2312 /* Support for both adm and op quota files must be provided */
2314 rc = fsfilt_ext3_read_record(f, buf, count, &p);
2315 rc = rc < 0 ? rc : p - pos;
2317 struct super_block *sb = inode->i_sb;
2318 rc = sb->s_op->quota_read(sb, type, buf, count, pos);
2323 ssize_t lustre_write_quota(struct file *f, char *buf, int count, loff_t pos)
2328 /* Only adm quota files are supported, op updates are handled by vfs */
2329 rc = fsfilt_ext3_write_record(f, buf, count, &p, 0);
2330 rc = rc < 0 ? rc : p - pos;
2335 void *lustre_quota_journal_start(struct inode *inode, int delete)
2338 unsigned block_count;
2341 /* each indirect block (+4) may become free, attaching to the
2342 * header list of free blocks (+1); the data block (+1) may
2343 * become a free block (+0) or a block with free dqentries (+0) */
2344 block_count = (4 + 1) + 1;
2345 handle = ext3_journal_start(inode,
2346 block_count*FSFILT_DATA_TRANS_BLOCKS(inode->i_sb)+2);
2348 /* indirect blocks are touched (+4), each causes file expansion (+0) or
2349 * freeblk reusage with a header update (+1); dqentry is either reused
2350 * causing update of the entry block (+1), prev (+1) and next (+1) or
2351 * a new block allocation (+1) with a header update (+1) */
2352 block_count = (4 + 1) + 3;
2353 handle = ext3_journal_start(inode,
2354 block_count*FSFILT_DATA_TRANS_BLOCKS(inode->i_sb)+2);
2361 void lustre_quota_journal_stop(void *handle)
2363 ext3_journal_stop((handle_t *)handle);
2366 static int ll_decode_fh_accept(void *context, struct dentry *de)
2371 #ifdef HAVE_EXPORTFS_DECODE_FH
2372 # define ll_exportfs_decode_fh(mnt, fid, len, type, acceptable, context) \
2373 exportfs_decode_fh(mnt, (struct fid*)(fid), len, type, \
2374 acceptable, context)
2376 # define ll_exportfs_decode_fh(mnt, fid, len, type, acceptable, context) \
2377 export_op_default.decode_fh((mnt)->mnt_sb, &(fid)->ino, len, \
2378 type, acceptable, context)
2379 # define FILEID_INO32_GEN 1
2380 extern struct export_operations export_op_default;
2383 struct dentry *fsfilt_ext3_fid2dentry(struct vfsmount *mnt,
2384 struct fsfilt_fid *fid, int ignore_gen)
2386 struct inode *inode;
2387 struct dentry *result;
2389 result = ll_exportfs_decode_fh(mnt, fid, 2, FILEID_INO32_GEN,
2390 ll_decode_fh_accept, NULL);
2391 if (IS_ERR(result)) {
2392 CDEBUG(D_DENTRY, "%s of %u/%u failed %ld\n", __func__,
2393 fid->ino, fid->gen, PTR_ERR(result));
2397 CDEBUG(D_DENTRY, "%s of %u/%u succeeded\n", __func__,
2398 fid->ino, fid->gen);
2399 inode = result->d_inode;
2403 if (inode->i_nlink == 0 &&
2404 inode->i_mode == 0 && LTIME_S(inode->i_ctime) == 0) {
2405 LCONSOLE_WARN("Found inode with zero nlink, mode and"
2406 " ctime -- this may indicate disk "
2407 "corruption (inode: %lu, link: %lu, "
2408 "count: %d)\n", inode->i_ino,
2409 (unsigned long)inode->i_nlink,
2410 atomic_read(&inode->i_count));
2413 if (fid->gen && inode->i_generation != fid->gen) {
2414 /* we didn't find the right inode.. */
2415 CDEBUG(D_INODE, "found wrong generation: inode %lu, link: %lu, "
2416 "count: %d, generation %u/%u\n",
2417 inode->i_ino, (unsigned long)inode->i_nlink,
2418 atomic_read(&inode->i_count), inode->i_generation,
2426 return ERR_PTR(-ENOENT);
2429 static struct fsfilt_operations fsfilt_ext3_ops = {
2431 .fs_owner = THIS_MODULE,
2432 .fs_getlabel = fsfilt_ext3_get_label,
2433 .fs_setlabel = fsfilt_ext3_set_label,
2434 .fs_uuid = fsfilt_ext3_uuid,
2435 .fs_start = fsfilt_ext3_start,
2436 .fs_brw_start = fsfilt_ext3_brw_start,
2437 .fs_extend = fsfilt_ext3_extend,
2438 .fs_commit = fsfilt_ext3_commit,
2439 .fs_commit_async = fsfilt_ext3_commit_async,
2440 .fs_commit_wait = fsfilt_ext3_commit_wait,
2441 .fs_setattr = fsfilt_ext3_setattr,
2442 .fs_iocontrol = fsfilt_ext3_iocontrol,
2443 .fs_set_md = fsfilt_ext3_set_md,
2444 .fs_get_md = fsfilt_ext3_get_md,
2445 .fs_readpage = fsfilt_ext3_readpage,
2446 .fs_add_journal_cb = fsfilt_ext3_add_journal_cb,
2447 .fs_statfs = fsfilt_ext3_statfs,
2448 .fs_sync = fsfilt_ext3_sync,
2449 .fs_map_inode_pages = fsfilt_ext3_map_inode_pages,
2450 .fs_write_record = fsfilt_ext3_write_record,
2451 .fs_read_record = fsfilt_ext3_read_record,
2452 .fs_setup = fsfilt_ext3_setup,
2453 .fs_send_bio = fsfilt_ext3_send_bio,
2454 .fs_get_op_len = fsfilt_ext3_get_op_len,
2455 #ifdef HAVE_DISK_INODE_VERSION
2456 .fs_get_version = fsfilt_ext3_get_version,
2457 .fs_set_version = fsfilt_ext3_set_version,
2459 #ifdef HAVE_QUOTA_SUPPORT
2460 .fs_quotactl = fsfilt_ext3_quotactl,
2461 .fs_quotacheck = fsfilt_ext3_quotacheck,
2462 .fs_quotainfo = fsfilt_ext3_quotainfo,
2463 .fs_qids = fsfilt_ext3_qids,
2464 .fs_dquot = fsfilt_ext3_dquot,
2465 .fs_get_mblk = fsfilt_ext3_get_mblk,
2467 .fs_journal_sbdev = fsfilt_ext3_journal_sbdev,
2468 .fs_fid2dentry = fsfilt_ext3_fid2dentry,
2471 static int __init fsfilt_ext3_init(void)
2475 fcb_cache = cfs_mem_cache_create("fsfilt_ext3_fcb",
2476 sizeof(struct fsfilt_cb_data), 0, 0);
2478 CERROR("error allocating fsfilt journal callback cache\n");
2479 GOTO(out, rc = -ENOMEM);
2482 rc = fsfilt_register_ops(&fsfilt_ext3_ops);
2485 int err = cfs_mem_cache_destroy(fcb_cache);
2486 LASSERTF(err == 0, "error destroying new cache: rc %d\n", err);
2492 static void __exit fsfilt_ext3_exit(void)
2496 fsfilt_unregister_ops(&fsfilt_ext3_ops);
2497 rc = cfs_mem_cache_destroy(fcb_cache);
2498 LASSERTF(rc == 0, "couldn't destroy fcb_cache slab\n");
2501 module_init(fsfilt_ext3_init);
2502 module_exit(fsfilt_ext3_exit);
2504 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2505 MODULE_DESCRIPTION("Lustre ext3 Filesystem Helper v0.1");
2506 MODULE_LICENSE("GPL");