2 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "xfs_trans.h"
26 #include "xfs_alloc.h"
27 #include "xfs_quota.h"
28 #include "xfs_mount.h"
29 #include "xfs_bmap_btree.h"
30 #include "xfs_alloc_btree.h"
31 #include "xfs_ialloc_btree.h"
32 #include "xfs_dinode.h"
33 #include "xfs_inode.h"
34 #include "xfs_btree.h"
35 #include "xfs_ialloc.h"
37 #include "xfs_rtalloc.h"
38 #include "xfs_error.h"
39 #include "xfs_itable.h"
40 #include "xfs_fsops.h"
42 #include "xfs_buf_item.h"
43 #include "xfs_utils.h"
44 #include "xfs_vnodeops.h"
45 #include "xfs_log_priv.h"
46 #include "xfs_trans_priv.h"
47 #include "xfs_filestream.h"
48 #include "xfs_da_btree.h"
49 #include "xfs_extfree_item.h"
50 #include "xfs_mru_cache.h"
51 #include "xfs_inode_item.h"
53 #include "xfs_trace.h"
55 #include <linux/namei.h>
56 #include <linux/init.h>
57 #include <linux/slab.h>
58 #include <linux/mount.h>
59 #include <linux/mempool.h>
60 #include <linux/writeback.h>
61 #include <linux/kthread.h>
62 #include <linux/freezer.h>
63 #include <linux/parser.h>
65 static const struct super_operations xfs_super_operations;
66 static kmem_zone_t *xfs_ioend_zone;
67 mempool_t *xfs_ioend_pool;
69 #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
70 #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
71 #define MNTOPT_LOGDEV "logdev" /* log device */
72 #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
73 #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
74 #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
75 #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
76 #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */
77 #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
78 #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
79 #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
80 #define MNTOPT_MTPT "mtpt" /* filesystem mount point */
81 #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */
82 #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */
83 #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */
84 #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */
85 #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */
86 #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
87 #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
88 * unwritten extent conversion */
89 #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */
90 #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
91 #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
92 #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
93 #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
94 #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes
96 #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
97 #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
98 #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */
99 #define MNTOPT_QUOTA "quota" /* disk quotas (user) */
100 #define MNTOPT_NOQUOTA "noquota" /* no quotas */
101 #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */
102 #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */
103 #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */
104 #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */
105 #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */
106 #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */
107 #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */
108 #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */
109 #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */
110 #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */
111 #define MNTOPT_DELAYLOG "delaylog" /* Delayed logging enabled */
112 #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed logging disabled */
113 #define MNTOPT_DISCARD "discard" /* Discard unused blocks */
114 #define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */
117 * Table driven mount option parser.
119 * Currently only used for remount, but it will be used for mount
120 * in the future, too.
123 Opt_barrier, Opt_nobarrier, Opt_err
126 static const match_table_t tokens = {
127 {Opt_barrier, "barrier"},
128 {Opt_nobarrier, "nobarrier"},
134 suffix_strtoul(char *s, char **endp, unsigned int base)
136 int last, shift_left_factor = 0;
139 last = strlen(value) - 1;
140 if (value[last] == 'K' || value[last] == 'k') {
141 shift_left_factor = 10;
144 if (value[last] == 'M' || value[last] == 'm') {
145 shift_left_factor = 20;
148 if (value[last] == 'G' || value[last] == 'g') {
149 shift_left_factor = 30;
153 return simple_strtoul((const char *)s, endp, base) << shift_left_factor;
157 * This function fills in xfs_mount_t fields based on mount args.
158 * Note: the superblock has _not_ yet been read in.
160 * Note that this function leaks the various device name allocations on
161 * failure. The caller takes care of them.
165 struct xfs_mount *mp,
168 struct super_block *sb = mp->m_super;
169 char *this_char, *value, *eov;
173 __uint8_t iosizelog = 0;
176 * set up the mount name first so all the errors will refer to the
179 mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL);
182 mp->m_fsname_len = strlen(mp->m_fsname) + 1;
185 * Copy binary VFS mount flags we are interested in.
187 if (sb->s_flags & MS_RDONLY)
188 mp->m_flags |= XFS_MOUNT_RDONLY;
189 if (sb->s_flags & MS_DIRSYNC)
190 mp->m_flags |= XFS_MOUNT_DIRSYNC;
191 if (sb->s_flags & MS_SYNCHRONOUS)
192 mp->m_flags |= XFS_MOUNT_WSYNC;
195 * Set some default flags that could be cleared by the mount option
198 mp->m_flags |= XFS_MOUNT_BARRIER;
199 mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
200 mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
203 * These can be overridden by the mount option parsing.
211 while ((this_char = strsep(&options, ",")) != NULL) {
214 if ((value = strchr(this_char, '=')) != NULL)
217 if (!strcmp(this_char, MNTOPT_LOGBUFS)) {
218 if (!value || !*value) {
219 xfs_warn(mp, "%s option requires an argument",
223 mp->m_logbufs = simple_strtoul(value, &eov, 10);
224 } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
225 if (!value || !*value) {
226 xfs_warn(mp, "%s option requires an argument",
230 mp->m_logbsize = suffix_strtoul(value, &eov, 10);
231 } else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
232 if (!value || !*value) {
233 xfs_warn(mp, "%s option requires an argument",
237 mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL);
240 } else if (!strcmp(this_char, MNTOPT_MTPT)) {
241 xfs_warn(mp, "%s option not allowed on this system",
244 } else if (!strcmp(this_char, MNTOPT_RTDEV)) {
245 if (!value || !*value) {
246 xfs_warn(mp, "%s option requires an argument",
250 mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL);
253 } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
254 if (!value || !*value) {
255 xfs_warn(mp, "%s option requires an argument",
259 iosize = simple_strtoul(value, &eov, 10);
260 iosizelog = ffs(iosize) - 1;
261 } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) {
262 if (!value || !*value) {
263 xfs_warn(mp, "%s option requires an argument",
267 iosize = suffix_strtoul(value, &eov, 10);
268 iosizelog = ffs(iosize) - 1;
269 } else if (!strcmp(this_char, MNTOPT_GRPID) ||
270 !strcmp(this_char, MNTOPT_BSDGROUPS)) {
271 mp->m_flags |= XFS_MOUNT_GRPID;
272 } else if (!strcmp(this_char, MNTOPT_NOGRPID) ||
273 !strcmp(this_char, MNTOPT_SYSVGROUPS)) {
274 mp->m_flags &= ~XFS_MOUNT_GRPID;
275 } else if (!strcmp(this_char, MNTOPT_WSYNC)) {
276 mp->m_flags |= XFS_MOUNT_WSYNC;
277 } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) {
278 mp->m_flags |= XFS_MOUNT_NORECOVERY;
279 } else if (!strcmp(this_char, MNTOPT_NOALIGN)) {
280 mp->m_flags |= XFS_MOUNT_NOALIGN;
281 } else if (!strcmp(this_char, MNTOPT_SWALLOC)) {
282 mp->m_flags |= XFS_MOUNT_SWALLOC;
283 } else if (!strcmp(this_char, MNTOPT_SUNIT)) {
284 if (!value || !*value) {
285 xfs_warn(mp, "%s option requires an argument",
289 dsunit = simple_strtoul(value, &eov, 10);
290 } else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
291 if (!value || !*value) {
292 xfs_warn(mp, "%s option requires an argument",
296 dswidth = simple_strtoul(value, &eov, 10);
297 } else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
298 mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
300 xfs_warn(mp, "%s option not allowed on this system",
304 } else if (!strcmp(this_char, MNTOPT_NOUUID)) {
305 mp->m_flags |= XFS_MOUNT_NOUUID;
306 } else if (!strcmp(this_char, MNTOPT_BARRIER)) {
307 mp->m_flags |= XFS_MOUNT_BARRIER;
308 } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) {
309 mp->m_flags &= ~XFS_MOUNT_BARRIER;
310 } else if (!strcmp(this_char, MNTOPT_IKEEP)) {
311 mp->m_flags |= XFS_MOUNT_IKEEP;
312 } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
313 mp->m_flags &= ~XFS_MOUNT_IKEEP;
314 } else if (!strcmp(this_char, MNTOPT_LARGEIO)) {
315 mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE;
316 } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
317 mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
318 } else if (!strcmp(this_char, MNTOPT_ATTR2)) {
319 mp->m_flags |= XFS_MOUNT_ATTR2;
320 } else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
321 mp->m_flags &= ~XFS_MOUNT_ATTR2;
322 mp->m_flags |= XFS_MOUNT_NOATTR2;
323 } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) {
324 mp->m_flags |= XFS_MOUNT_FILESTREAMS;
325 } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) {
326 mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
327 mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
328 mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
329 } else if (!strcmp(this_char, MNTOPT_QUOTA) ||
330 !strcmp(this_char, MNTOPT_UQUOTA) ||
331 !strcmp(this_char, MNTOPT_USRQUOTA)) {
332 mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
334 } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) ||
335 !strcmp(this_char, MNTOPT_UQUOTANOENF)) {
336 mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
337 mp->m_qflags &= ~XFS_UQUOTA_ENFD;
338 } else if (!strcmp(this_char, MNTOPT_PQUOTA) ||
339 !strcmp(this_char, MNTOPT_PRJQUOTA)) {
340 mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
342 } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) {
343 mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
344 mp->m_qflags &= ~XFS_OQUOTA_ENFD;
345 } else if (!strcmp(this_char, MNTOPT_GQUOTA) ||
346 !strcmp(this_char, MNTOPT_GRPQUOTA)) {
347 mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
349 } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) {
350 mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
351 mp->m_qflags &= ~XFS_OQUOTA_ENFD;
352 } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) {
354 "delaylog is the default now, option is deprecated.");
355 } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) {
357 "nodelaylog support has been removed, option is deprecated.");
358 } else if (!strcmp(this_char, MNTOPT_DISCARD)) {
359 mp->m_flags |= XFS_MOUNT_DISCARD;
360 } else if (!strcmp(this_char, MNTOPT_NODISCARD)) {
361 mp->m_flags &= ~XFS_MOUNT_DISCARD;
362 } else if (!strcmp(this_char, "ihashsize")) {
364 "ihashsize no longer used, option is deprecated.");
365 } else if (!strcmp(this_char, "osyncisdsync")) {
367 "osyncisdsync has no effect, option is deprecated.");
368 } else if (!strcmp(this_char, "osyncisosync")) {
370 "osyncisosync has no effect, option is deprecated.");
371 } else if (!strcmp(this_char, "irixsgid")) {
373 "irixsgid is now a sysctl(2) variable, option is deprecated.");
375 xfs_warn(mp, "unknown mount option [%s].", this_char);
381 * no recovery flag requires a read-only mount
383 if ((mp->m_flags & XFS_MOUNT_NORECOVERY) &&
384 !(mp->m_flags & XFS_MOUNT_RDONLY)) {
385 xfs_warn(mp, "no-recovery mounts must be read-only.");
389 if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) {
391 "sunit and swidth options incompatible with the noalign option");
395 #ifndef CONFIG_XFS_QUOTA
396 if (XFS_IS_QUOTA_RUNNING(mp)) {
397 xfs_warn(mp, "quota support not available in this kernel.");
402 if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) &&
403 (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) {
404 xfs_warn(mp, "cannot mount with both project and group quota");
408 if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
409 xfs_warn(mp, "sunit and swidth must be specified together");
413 if (dsunit && (dswidth % dsunit != 0)) {
415 "stripe width (%d) must be a multiple of the stripe unit (%d)",
421 if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) {
423 * At this point the superblock has not been read
424 * in, therefore we do not know the block size.
425 * Before the mount call ends we will convert
429 mp->m_dalign = dsunit;
430 mp->m_flags |= XFS_MOUNT_RETERR;
434 mp->m_swidth = dswidth;
437 if (mp->m_logbufs != -1 &&
438 mp->m_logbufs != 0 &&
439 (mp->m_logbufs < XLOG_MIN_ICLOGS ||
440 mp->m_logbufs > XLOG_MAX_ICLOGS)) {
441 xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
442 mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
443 return XFS_ERROR(EINVAL);
445 if (mp->m_logbsize != -1 &&
446 mp->m_logbsize != 0 &&
447 (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE ||
448 mp->m_logbsize > XLOG_MAX_RECORD_BSIZE ||
449 !is_power_of_2(mp->m_logbsize))) {
451 "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
453 return XFS_ERROR(EINVAL);
457 if (iosizelog > XFS_MAX_IO_LOG ||
458 iosizelog < XFS_MIN_IO_LOG) {
459 xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
460 iosizelog, XFS_MIN_IO_LOG,
462 return XFS_ERROR(EINVAL);
465 mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
466 mp->m_readio_log = iosizelog;
467 mp->m_writeio_log = iosizelog;
473 struct proc_xfs_info {
480 struct xfs_mount *mp,
483 static struct proc_xfs_info xfs_info_set[] = {
484 /* the few simple ones we can get from the mount struct */
485 { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP },
486 { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC },
487 { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN },
488 { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC },
489 { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
490 { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
491 { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 },
492 { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM },
493 { XFS_MOUNT_GRPID, "," MNTOPT_GRPID },
494 { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD },
497 static struct proc_xfs_info xfs_info_unset[] = {
498 /* the few simple ones we can get from the mount struct */
499 { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO },
500 { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER },
501 { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE },
504 struct proc_xfs_info *xfs_infop;
506 for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) {
507 if (mp->m_flags & xfs_infop->flag)
508 seq_puts(m, xfs_infop->str);
510 for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) {
511 if (!(mp->m_flags & xfs_infop->flag))
512 seq_puts(m, xfs_infop->str);
515 if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
516 seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk",
517 (int)(1 << mp->m_writeio_log) >> 10);
519 if (mp->m_logbufs > 0)
520 seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
521 if (mp->m_logbsize > 0)
522 seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10);
525 seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname);
527 seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname);
529 if (mp->m_dalign > 0)
530 seq_printf(m, "," MNTOPT_SUNIT "=%d",
531 (int)XFS_FSB_TO_BB(mp, mp->m_dalign));
532 if (mp->m_swidth > 0)
533 seq_printf(m, "," MNTOPT_SWIDTH "=%d",
534 (int)XFS_FSB_TO_BB(mp, mp->m_swidth));
536 if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD))
537 seq_puts(m, "," MNTOPT_USRQUOTA);
538 else if (mp->m_qflags & XFS_UQUOTA_ACCT)
539 seq_puts(m, "," MNTOPT_UQUOTANOENF);
541 /* Either project or group quotas can be active, not both */
543 if (mp->m_qflags & XFS_PQUOTA_ACCT) {
544 if (mp->m_qflags & XFS_OQUOTA_ENFD)
545 seq_puts(m, "," MNTOPT_PRJQUOTA);
547 seq_puts(m, "," MNTOPT_PQUOTANOENF);
548 } else if (mp->m_qflags & XFS_GQUOTA_ACCT) {
549 if (mp->m_qflags & XFS_OQUOTA_ENFD)
550 seq_puts(m, "," MNTOPT_GRPQUOTA);
552 seq_puts(m, "," MNTOPT_GQUOTANOENF);
555 if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT))
556 seq_puts(m, "," MNTOPT_NOQUOTA);
562 unsigned int blockshift)
564 unsigned int pagefactor = 1;
565 unsigned int bitshift = BITS_PER_LONG - 1;
567 /* Figure out maximum filesize, on Linux this can depend on
568 * the filesystem blocksize (on 32 bit platforms).
569 * __block_write_begin does this in an [unsigned] long...
570 * page->index << (PAGE_CACHE_SHIFT - bbits)
571 * So, for page sized blocks (4K on 32 bit platforms),
572 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
573 * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
574 * but for smaller blocksizes it is less (bbits = log2 bsize).
575 * Note1: get_block_t takes a long (implicit cast from above)
576 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
577 * can optionally convert the [unsigned] long from above into
578 * an [unsigned] long long.
581 #if BITS_PER_LONG == 32
582 # if defined(CONFIG_LBDAF)
583 ASSERT(sizeof(sector_t) == 8);
584 pagefactor = PAGE_CACHE_SIZE;
585 bitshift = BITS_PER_LONG;
587 pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
591 return (((__uint64_t)pagefactor) << bitshift) - 1;
598 struct block_device **bdevp)
602 *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL,
604 if (IS_ERR(*bdevp)) {
605 error = PTR_ERR(*bdevp);
606 xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error);
614 struct block_device *bdev)
617 blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
621 xfs_blkdev_issue_flush(
622 xfs_buftarg_t *buftarg)
624 blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL);
629 struct xfs_mount *mp)
631 if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
632 struct block_device *logdev = mp->m_logdev_targp->bt_bdev;
633 xfs_free_buftarg(mp, mp->m_logdev_targp);
634 xfs_blkdev_put(logdev);
636 if (mp->m_rtdev_targp) {
637 struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev;
638 xfs_free_buftarg(mp, mp->m_rtdev_targp);
639 xfs_blkdev_put(rtdev);
641 xfs_free_buftarg(mp, mp->m_ddev_targp);
645 * The file system configurations are:
646 * (1) device (partition) with data and internal log
647 * (2) logical volume with data and log subvolumes.
648 * (3) logical volume with data, log, and realtime subvolumes.
650 * We only have to handle opening the log and realtime volumes here if
651 * they are present. The data subvolume has already been opened by
652 * get_sb_bdev() and is stored in sb->s_bdev.
656 struct xfs_mount *mp)
658 struct block_device *ddev = mp->m_super->s_bdev;
659 struct block_device *logdev = NULL, *rtdev = NULL;
663 * Open real time and log devices - order is important.
666 error = xfs_blkdev_get(mp, mp->m_logname, &logdev);
672 error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev);
674 goto out_close_logdev;
676 if (rtdev == ddev || rtdev == logdev) {
678 "Cannot mount filesystem with identical rtdev and ddev/logdev.");
680 goto out_close_rtdev;
685 * Setup xfs_mount buffer target pointers
688 mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname);
689 if (!mp->m_ddev_targp)
690 goto out_close_rtdev;
693 mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1,
695 if (!mp->m_rtdev_targp)
696 goto out_free_ddev_targ;
699 if (logdev && logdev != ddev) {
700 mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1,
702 if (!mp->m_logdev_targp)
703 goto out_free_rtdev_targ;
705 mp->m_logdev_targp = mp->m_ddev_targp;
711 if (mp->m_rtdev_targp)
712 xfs_free_buftarg(mp, mp->m_rtdev_targp);
714 xfs_free_buftarg(mp, mp->m_ddev_targp);
717 xfs_blkdev_put(rtdev);
719 if (logdev && logdev != ddev)
720 xfs_blkdev_put(logdev);
726 * Setup xfs_mount buffer target pointers based on superblock
730 struct xfs_mount *mp)
734 error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize,
735 mp->m_sb.sb_sectsize);
739 if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
740 unsigned int log_sector_size = BBSIZE;
742 if (xfs_sb_version_hassector(&mp->m_sb))
743 log_sector_size = mp->m_sb.sb_logsectsize;
744 error = xfs_setsize_buftarg(mp->m_logdev_targp,
745 mp->m_sb.sb_blocksize,
750 if (mp->m_rtdev_targp) {
751 error = xfs_setsize_buftarg(mp->m_rtdev_targp,
752 mp->m_sb.sb_blocksize,
753 mp->m_sb.sb_sectsize);
762 xfs_init_mount_workqueues(
763 struct xfs_mount *mp)
765 mp->m_data_workqueue = alloc_workqueue("xfs-data/%s",
766 WQ_MEM_RECLAIM, 0, mp->m_fsname);
767 if (!mp->m_data_workqueue)
770 mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s",
771 WQ_MEM_RECLAIM, 0, mp->m_fsname);
772 if (!mp->m_unwritten_workqueue)
773 goto out_destroy_data_iodone_queue;
775 mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s",
776 WQ_MEM_RECLAIM, 0, mp->m_fsname);
777 if (!mp->m_cil_workqueue)
778 goto out_destroy_unwritten;
781 out_destroy_unwritten:
782 destroy_workqueue(mp->m_unwritten_workqueue);
783 out_destroy_data_iodone_queue:
784 destroy_workqueue(mp->m_data_workqueue);
790 xfs_destroy_mount_workqueues(
791 struct xfs_mount *mp)
793 destroy_workqueue(mp->m_cil_workqueue);
794 destroy_workqueue(mp->m_data_workqueue);
795 destroy_workqueue(mp->m_unwritten_workqueue);
798 /* Catch misguided souls that try to use this interface on XFS */
799 STATIC struct inode *
801 struct super_block *sb)
808 * Now that the generic code is guaranteed not to be accessing
809 * the linux inode, we can reclaim the inode.
812 xfs_fs_destroy_inode(
815 struct xfs_inode *ip = XFS_I(inode);
817 trace_xfs_destroy_inode(ip);
819 XFS_STATS_INC(vn_reclaim);
821 /* bad inode, get out here ASAP */
822 if (is_bad_inode(inode))
825 ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0);
828 * We should never get here with one of the reclaim flags already set.
830 ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE));
831 ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM));
834 * We always use background reclaim here because even if the
835 * inode is clean, it still may be under IO and hence we have
836 * to take the flush lock. The background reclaim path handles
837 * this more efficiently than we can here, so simply let background
838 * reclaim tear down all inodes.
841 xfs_inode_set_reclaim_tag(ip);
845 * Slab object creation initialisation for the XFS inode.
846 * This covers only the idempotent fields in the XFS inode;
847 * all other fields need to be initialised on allocation
848 * from the slab. This avoids the need to repeatedly initialise
849 * fields in the xfs inode that left in the initialise state
850 * when freeing the inode.
853 xfs_fs_inode_init_once(
856 struct xfs_inode *ip = inode;
858 memset(ip, 0, sizeof(struct xfs_inode));
861 inode_init_once(VFS_I(ip));
864 atomic_set(&ip->i_pincount, 0);
865 spin_lock_init(&ip->i_flags_lock);
867 mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER,
868 "xfsino", ip->i_ino);
875 xfs_inode_t *ip = XFS_I(inode);
877 ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock));
879 trace_xfs_evict_inode(ip);
881 truncate_inode_pages(&inode->i_data, 0);
883 XFS_STATS_INC(vn_rele);
884 XFS_STATS_INC(vn_remove);
885 XFS_STATS_DEC(vn_active);
891 * We do an unlocked check for XFS_IDONTCACHE here because we are already
892 * serialised against cache hits here via the inode->i_lock and igrab() in
893 * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be
894 * racing with us, and it avoids needing to grab a spinlock here for every inode
895 * we drop the final reference on.
901 struct xfs_inode *ip = XFS_I(inode);
903 return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE);
908 struct xfs_mount *mp)
912 kfree(mp->m_logname);
917 struct super_block *sb)
919 struct xfs_mount *mp = XFS_M(sb);
921 xfs_filestream_unmount(mp);
925 xfs_icsb_destroy_counters(mp);
926 xfs_destroy_mount_workqueues(mp);
927 xfs_close_devices(mp);
934 struct super_block *sb,
937 struct xfs_mount *mp = XFS_M(sb);
941 * Doing anything during the async pass would be counterproductive.
946 error = xfs_quiesce_data(mp);
952 * The disk must be active because we're syncing.
953 * We schedule xfssyncd now (now that the disk is
954 * active) instead of later (when it might not be).
956 flush_delayed_work_sync(&mp->m_sync_work);
964 struct dentry *dentry,
965 struct kstatfs *statp)
967 struct xfs_mount *mp = XFS_M(dentry->d_sb);
968 xfs_sb_t *sbp = &mp->m_sb;
969 struct xfs_inode *ip = XFS_I(dentry->d_inode);
970 __uint64_t fakeinos, id;
974 statp->f_type = XFS_SB_MAGIC;
975 statp->f_namelen = MAXNAMELEN - 1;
977 id = huge_encode_dev(mp->m_ddev_targp->bt_dev);
978 statp->f_fsid.val[0] = (u32)id;
979 statp->f_fsid.val[1] = (u32)(id >> 32);
981 xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT);
983 spin_lock(&mp->m_sb_lock);
984 statp->f_bsize = sbp->sb_blocksize;
985 lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0;
986 statp->f_blocks = sbp->sb_dblocks - lsize;
987 statp->f_bfree = statp->f_bavail =
988 sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
989 fakeinos = statp->f_bfree << sbp->sb_inopblog;
991 MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER);
993 statp->f_files = min_t(typeof(statp->f_files),
997 /* make sure statp->f_ffree does not underflow */
998 ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree);
999 statp->f_ffree = max_t(__int64_t, ffree, 0);
1001 spin_unlock(&mp->m_sb_lock);
1003 if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) &&
1004 ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) ==
1005 (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))
1006 xfs_qm_statvfs(ip, statp);
1011 xfs_save_resvblks(struct xfs_mount *mp)
1013 __uint64_t resblks = 0;
1015 mp->m_resblks_save = mp->m_resblks;
1016 xfs_reserve_blocks(mp, &resblks, NULL);
1020 xfs_restore_resvblks(struct xfs_mount *mp)
1024 if (mp->m_resblks_save) {
1025 resblks = mp->m_resblks_save;
1026 mp->m_resblks_save = 0;
1028 resblks = xfs_default_resblks(mp);
1030 xfs_reserve_blocks(mp, &resblks, NULL);
1035 struct super_block *sb,
1039 struct xfs_mount *mp = XFS_M(sb);
1040 substring_t args[MAX_OPT_ARGS];
1044 while ((p = strsep(&options, ",")) != NULL) {
1050 token = match_token(p, tokens, args);
1053 mp->m_flags |= XFS_MOUNT_BARRIER;
1056 mp->m_flags &= ~XFS_MOUNT_BARRIER;
1060 * Logically we would return an error here to prevent
1061 * users from believing they might have changed
1062 * mount options using remount which can't be changed.
1064 * But unfortunately mount(8) adds all options from
1065 * mtab and fstab to the mount arguments in some cases
1066 * so we can't blindly reject options, but have to
1067 * check for each specified option if it actually
1068 * differs from the currently set option and only
1069 * reject it if that's the case.
1071 * Until that is implemented we return success for
1072 * every remount request, and silently ignore all
1073 * options that we can't actually change.
1077 "mount option \"%s\" not supported for remount\n", p);
1086 if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) {
1087 mp->m_flags &= ~XFS_MOUNT_RDONLY;
1090 * If this is the first remount to writeable state we
1091 * might have some superblock changes to update.
1093 if (mp->m_update_flags) {
1094 error = xfs_mount_log_sb(mp, mp->m_update_flags);
1096 xfs_warn(mp, "failed to write sb changes");
1099 mp->m_update_flags = 0;
1103 * Fill out the reserve pool if it is empty. Use the stashed
1104 * value if it is non-zero, otherwise go with the default.
1106 xfs_restore_resvblks(mp);
1110 if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) {
1112 * After we have synced the data but before we sync the
1113 * metadata, we need to free up the reserve block pool so that
1114 * the used block count in the superblock on disk is correct at
1115 * the end of the remount. Stash the current reserve pool size
1116 * so that if we get remounted rw, we can return it to the same
1120 xfs_quiesce_data(mp);
1121 xfs_save_resvblks(mp);
1122 xfs_quiesce_attr(mp);
1123 mp->m_flags |= XFS_MOUNT_RDONLY;
1130 * Second stage of a freeze. The data is already frozen so we only
1131 * need to take care of the metadata. Once that's done write a dummy
1132 * record to dirty the log in case of a crash while frozen.
1136 struct super_block *sb)
1138 struct xfs_mount *mp = XFS_M(sb);
1140 xfs_save_resvblks(mp);
1141 xfs_quiesce_attr(mp);
1142 return -xfs_fs_log_dummy(mp);
1147 struct super_block *sb)
1149 struct xfs_mount *mp = XFS_M(sb);
1151 xfs_restore_resvblks(mp);
1156 xfs_fs_show_options(
1158 struct dentry *root)
1160 return -xfs_showargs(XFS_M(root->d_sb), m);
1164 * This function fills in xfs_mount_t fields based on mount args.
1165 * Note: the superblock _has_ now been read in.
1169 struct xfs_mount *mp)
1171 int ronly = (mp->m_flags & XFS_MOUNT_RDONLY);
1173 /* Fail a mount where the logbuf is smaller than the log stripe */
1174 if (xfs_sb_version_haslogv2(&mp->m_sb)) {
1175 if (mp->m_logbsize <= 0 &&
1176 mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) {
1177 mp->m_logbsize = mp->m_sb.sb_logsunit;
1178 } else if (mp->m_logbsize > 0 &&
1179 mp->m_logbsize < mp->m_sb.sb_logsunit) {
1181 "logbuf size must be greater than or equal to log stripe size");
1182 return XFS_ERROR(EINVAL);
1185 /* Fail a mount if the logbuf is larger than 32K */
1186 if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) {
1188 "logbuf size for version 1 logs must be 16K or 32K");
1189 return XFS_ERROR(EINVAL);
1194 * mkfs'ed attr2 will turn on attr2 mount unless explicitly
1195 * told by noattr2 to turn it off
1197 if (xfs_sb_version_hasattr2(&mp->m_sb) &&
1198 !(mp->m_flags & XFS_MOUNT_NOATTR2))
1199 mp->m_flags |= XFS_MOUNT_ATTR2;
1202 * prohibit r/w mounts of read-only filesystems
1204 if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
1206 "cannot mount a read-only filesystem as read-write");
1207 return XFS_ERROR(EROFS);
1215 struct super_block *sb,
1220 struct xfs_mount *mp = NULL;
1221 int flags = 0, error = ENOMEM;
1223 mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL);
1227 spin_lock_init(&mp->m_sb_lock);
1228 mutex_init(&mp->m_growlock);
1229 atomic_set(&mp->m_active_trans, 0);
1234 error = xfs_parseargs(mp, (char *)data);
1236 goto out_free_fsname;
1238 sb_min_blocksize(sb, BBSIZE);
1239 sb->s_xattr = xfs_xattr_handlers;
1240 sb->s_export_op = &xfs_export_operations;
1241 #ifdef CONFIG_XFS_QUOTA
1242 sb->s_qcop = &xfs_quotactl_operations;
1244 sb->s_op = &xfs_super_operations;
1247 flags |= XFS_MFSI_QUIET;
1249 error = xfs_open_devices(mp);
1251 goto out_free_fsname;
1253 error = xfs_init_mount_workqueues(mp);
1255 goto out_close_devices;
1257 error = xfs_icsb_init_counters(mp);
1259 goto out_destroy_workqueues;
1261 error = xfs_readsb(mp, flags);
1263 goto out_destroy_counters;
1265 error = xfs_finish_flags(mp);
1269 error = xfs_setup_devices(mp);
1273 error = xfs_filestream_mount(mp);
1278 * we must configure the block size in the superblock before we run the
1279 * full mount process as the mount process can lookup and cache inodes.
1280 * For the same reason we must also initialise the syncd and register
1281 * the inode cache shrinker so that inodes can be reclaimed during
1282 * operations like a quotacheck that iterate all inodes in the
1285 sb->s_magic = XFS_SB_MAGIC;
1286 sb->s_blocksize = mp->m_sb.sb_blocksize;
1287 sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1;
1288 sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
1289 sb->s_max_links = XFS_MAXLINK;
1290 sb->s_time_gran = 1;
1291 set_posix_acl_flag(sb);
1293 error = xfs_syncd_init(mp);
1295 goto out_filestream_unmount;
1297 error = xfs_mountfs(mp);
1299 goto out_syncd_stop;
1301 root = igrab(VFS_I(mp->m_rootip));
1306 if (is_bad_inode(root)) {
1310 sb->s_root = d_make_root(root);
1319 out_filestream_unmount:
1320 xfs_filestream_unmount(mp);
1323 out_destroy_counters:
1324 xfs_icsb_destroy_counters(mp);
1325 out_destroy_workqueues:
1326 xfs_destroy_mount_workqueues(mp);
1328 xfs_close_devices(mp);
1330 xfs_free_fsname(mp);
1336 xfs_filestream_unmount(mp);
1342 STATIC struct dentry *
1344 struct file_system_type *fs_type,
1346 const char *dev_name,
1349 return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super);
1353 xfs_fs_nr_cached_objects(
1354 struct super_block *sb)
1356 return xfs_reclaim_inodes_count(XFS_M(sb));
1360 xfs_fs_free_cached_objects(
1361 struct super_block *sb,
1364 xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan);
1367 static const struct super_operations xfs_super_operations = {
1368 .alloc_inode = xfs_fs_alloc_inode,
1369 .destroy_inode = xfs_fs_destroy_inode,
1370 .evict_inode = xfs_fs_evict_inode,
1371 .drop_inode = xfs_fs_drop_inode,
1372 .put_super = xfs_fs_put_super,
1373 .sync_fs = xfs_fs_sync_fs,
1374 .freeze_fs = xfs_fs_freeze,
1375 .unfreeze_fs = xfs_fs_unfreeze,
1376 .statfs = xfs_fs_statfs,
1377 .remount_fs = xfs_fs_remount,
1378 .show_options = xfs_fs_show_options,
1379 .nr_cached_objects = xfs_fs_nr_cached_objects,
1380 .free_cached_objects = xfs_fs_free_cached_objects,
1383 static struct file_system_type xfs_fs_type = {
1384 .owner = THIS_MODULE,
1386 .mount = xfs_fs_mount,
1387 .kill_sb = kill_block_super,
1388 .fs_flags = FS_REQUIRES_DEV,
1392 xfs_init_zones(void)
1395 xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend");
1396 if (!xfs_ioend_zone)
1399 xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE,
1401 if (!xfs_ioend_pool)
1402 goto out_destroy_ioend_zone;
1404 xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t),
1406 if (!xfs_log_ticket_zone)
1407 goto out_destroy_ioend_pool;
1409 xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t),
1410 "xfs_bmap_free_item");
1411 if (!xfs_bmap_free_item_zone)
1412 goto out_destroy_log_ticket_zone;
1414 xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t),
1416 if (!xfs_btree_cur_zone)
1417 goto out_destroy_bmap_free_item_zone;
1419 xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t),
1421 if (!xfs_da_state_zone)
1422 goto out_destroy_btree_cur_zone;
1424 xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork");
1425 if (!xfs_ifork_zone)
1426 goto out_destroy_da_state_zone;
1428 xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans");
1429 if (!xfs_trans_zone)
1430 goto out_destroy_ifork_zone;
1432 xfs_log_item_desc_zone =
1433 kmem_zone_init(sizeof(struct xfs_log_item_desc),
1434 "xfs_log_item_desc");
1435 if (!xfs_log_item_desc_zone)
1436 goto out_destroy_trans_zone;
1439 * The size of the zone allocated buf log item is the maximum
1440 * size possible under XFS. This wastes a little bit of memory,
1441 * but it is much faster.
1443 xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item),
1445 if (!xfs_buf_item_zone)
1446 goto out_destroy_log_item_desc_zone;
1448 xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) +
1449 ((XFS_EFD_MAX_FAST_EXTENTS - 1) *
1450 sizeof(xfs_extent_t))), "xfs_efd_item");
1452 goto out_destroy_buf_item_zone;
1454 xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) +
1455 ((XFS_EFI_MAX_FAST_EXTENTS - 1) *
1456 sizeof(xfs_extent_t))), "xfs_efi_item");
1458 goto out_destroy_efd_zone;
1461 kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode",
1462 KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD,
1463 xfs_fs_inode_init_once);
1464 if (!xfs_inode_zone)
1465 goto out_destroy_efi_zone;
1468 kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili",
1469 KM_ZONE_SPREAD, NULL);
1471 goto out_destroy_inode_zone;
1475 out_destroy_inode_zone:
1476 kmem_zone_destroy(xfs_inode_zone);
1477 out_destroy_efi_zone:
1478 kmem_zone_destroy(xfs_efi_zone);
1479 out_destroy_efd_zone:
1480 kmem_zone_destroy(xfs_efd_zone);
1481 out_destroy_buf_item_zone:
1482 kmem_zone_destroy(xfs_buf_item_zone);
1483 out_destroy_log_item_desc_zone:
1484 kmem_zone_destroy(xfs_log_item_desc_zone);
1485 out_destroy_trans_zone:
1486 kmem_zone_destroy(xfs_trans_zone);
1487 out_destroy_ifork_zone:
1488 kmem_zone_destroy(xfs_ifork_zone);
1489 out_destroy_da_state_zone:
1490 kmem_zone_destroy(xfs_da_state_zone);
1491 out_destroy_btree_cur_zone:
1492 kmem_zone_destroy(xfs_btree_cur_zone);
1493 out_destroy_bmap_free_item_zone:
1494 kmem_zone_destroy(xfs_bmap_free_item_zone);
1495 out_destroy_log_ticket_zone:
1496 kmem_zone_destroy(xfs_log_ticket_zone);
1497 out_destroy_ioend_pool:
1498 mempool_destroy(xfs_ioend_pool);
1499 out_destroy_ioend_zone:
1500 kmem_zone_destroy(xfs_ioend_zone);
1506 xfs_destroy_zones(void)
1508 kmem_zone_destroy(xfs_ili_zone);
1509 kmem_zone_destroy(xfs_inode_zone);
1510 kmem_zone_destroy(xfs_efi_zone);
1511 kmem_zone_destroy(xfs_efd_zone);
1512 kmem_zone_destroy(xfs_buf_item_zone);
1513 kmem_zone_destroy(xfs_log_item_desc_zone);
1514 kmem_zone_destroy(xfs_trans_zone);
1515 kmem_zone_destroy(xfs_ifork_zone);
1516 kmem_zone_destroy(xfs_da_state_zone);
1517 kmem_zone_destroy(xfs_btree_cur_zone);
1518 kmem_zone_destroy(xfs_bmap_free_item_zone);
1519 kmem_zone_destroy(xfs_log_ticket_zone);
1520 mempool_destroy(xfs_ioend_pool);
1521 kmem_zone_destroy(xfs_ioend_zone);
1526 xfs_init_workqueues(void)
1529 * We never want to the same work item to run twice, reclaiming inodes
1530 * or idling the log is not going to get any faster by multiple CPUs
1531 * competing for ressources. Use the default large max_active value
1532 * so that even lots of filesystems can perform these task in parallel.
1534 xfs_syncd_wq = alloc_workqueue("xfssyncd", WQ_NON_REENTRANT, 0);
1539 * The allocation workqueue can be used in memory reclaim situations
1540 * (writepage path), and parallelism is only limited by the number of
1541 * AGs in all the filesystems mounted. Hence use the default large
1542 * max_active value for this workqueue.
1544 xfs_alloc_wq = alloc_workqueue("xfsalloc", WQ_MEM_RECLAIM, 0);
1546 goto out_destroy_syncd;
1551 destroy_workqueue(xfs_syncd_wq);
1556 xfs_destroy_workqueues(void)
1558 destroy_workqueue(xfs_alloc_wq);
1559 destroy_workqueue(xfs_syncd_wq);
1567 printk(KERN_INFO XFS_VERSION_STRING " with "
1568 XFS_BUILD_OPTIONS " enabled\n");
1572 error = xfs_init_zones();
1576 error = xfs_init_workqueues();
1578 goto out_destroy_zones;
1580 error = xfs_mru_cache_init();
1582 goto out_destroy_wq;
1584 error = xfs_filestream_init();
1586 goto out_mru_cache_uninit;
1588 error = xfs_buf_init();
1590 goto out_filestream_uninit;
1592 error = xfs_init_procfs();
1594 goto out_buf_terminate;
1596 error = xfs_sysctl_register();
1598 goto out_cleanup_procfs;
1600 error = xfs_qm_init();
1602 goto out_sysctl_unregister;
1604 error = register_filesystem(&xfs_fs_type);
1611 out_sysctl_unregister:
1612 xfs_sysctl_unregister();
1614 xfs_cleanup_procfs();
1616 xfs_buf_terminate();
1617 out_filestream_uninit:
1618 xfs_filestream_uninit();
1619 out_mru_cache_uninit:
1620 xfs_mru_cache_uninit();
1622 xfs_destroy_workqueues();
1624 xfs_destroy_zones();
1633 unregister_filesystem(&xfs_fs_type);
1634 xfs_sysctl_unregister();
1635 xfs_cleanup_procfs();
1636 xfs_buf_terminate();
1637 xfs_filestream_uninit();
1638 xfs_mru_cache_uninit();
1639 xfs_destroy_workqueues();
1640 xfs_destroy_zones();
1643 module_init(init_xfs_fs);
1644 module_exit(exit_xfs_fs);
1646 MODULE_AUTHOR("Silicon Graphics, Inc.");
1647 MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
1648 MODULE_LICENSE("GPL");