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_dmapi.h"
28 #include "xfs_quota.h"
29 #include "xfs_mount.h"
30 #include "xfs_bmap_btree.h"
31 #include "xfs_alloc_btree.h"
32 #include "xfs_ialloc_btree.h"
33 #include "xfs_dir2_sf.h"
34 #include "xfs_attr_sf.h"
35 #include "xfs_dinode.h"
36 #include "xfs_inode.h"
37 #include "xfs_btree.h"
38 #include "xfs_btree_trace.h"
39 #include "xfs_ialloc.h"
41 #include "xfs_rtalloc.h"
42 #include "xfs_error.h"
43 #include "xfs_itable.h"
44 #include "xfs_fsops.h"
48 #include "xfs_buf_item.h"
49 #include "xfs_utils.h"
50 #include "xfs_vnodeops.h"
51 #include "xfs_version.h"
52 #include "xfs_log_priv.h"
53 #include "xfs_trans_priv.h"
54 #include "xfs_filestream.h"
55 #include "xfs_da_btree.h"
56 #include "xfs_dir2_trace.h"
57 #include "xfs_extfree_item.h"
58 #include "xfs_mru_cache.h"
59 #include "xfs_inode_item.h"
62 #include <linux/namei.h>
63 #include <linux/init.h>
64 #include <linux/mount.h>
65 #include <linux/mempool.h>
66 #include <linux/writeback.h>
67 #include <linux/kthread.h>
68 #include <linux/freezer.h>
69 #include <linux/parser.h>
71 static struct quotactl_ops xfs_quotactl_operations
;
72 static struct super_operations xfs_super_operations
;
73 static kmem_zone_t
*xfs_ioend_zone
;
74 mempool_t
*xfs_ioend_pool
;
76 #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
77 #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
78 #define MNTOPT_LOGDEV "logdev" /* log device */
79 #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
80 #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
81 #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
82 #define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */
83 #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
84 #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */
85 #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
86 #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
87 #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
88 #define MNTOPT_MTPT "mtpt" /* filesystem mount point */
89 #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */
90 #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */
91 #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */
92 #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */
93 #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */
94 #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
95 #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
96 * unwritten extent conversion */
97 #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */
98 #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
99 #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
100 #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
101 #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
102 #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
103 #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes
105 #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
106 #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
107 #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */
108 #define MNTOPT_QUOTA "quota" /* disk quotas (user) */
109 #define MNTOPT_NOQUOTA "noquota" /* no quotas */
110 #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */
111 #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */
112 #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */
113 #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */
114 #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */
115 #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */
116 #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */
117 #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */
118 #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */
119 #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */
120 #define MNTOPT_DMAPI "dmapi" /* DMI enabled (DMAPI / XDSM) */
121 #define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */
122 #define MNTOPT_DMI "dmi" /* DMI enabled (DMAPI / XDSM) */
125 * Table driven mount option parser.
127 * Currently only used for remount, but it will be used for mount
128 * in the future, too.
131 Opt_barrier
, Opt_nobarrier
, Opt_err
134 static const match_table_t tokens
= {
135 {Opt_barrier
, "barrier"},
136 {Opt_nobarrier
, "nobarrier"},
142 suffix_strtoul(char *s
, char **endp
, unsigned int base
)
144 int last
, shift_left_factor
= 0;
147 last
= strlen(value
) - 1;
148 if (value
[last
] == 'K' || value
[last
] == 'k') {
149 shift_left_factor
= 10;
152 if (value
[last
] == 'M' || value
[last
] == 'm') {
153 shift_left_factor
= 20;
156 if (value
[last
] == 'G' || value
[last
] == 'g') {
157 shift_left_factor
= 30;
161 return simple_strtoul((const char *)s
, endp
, base
) << shift_left_factor
;
165 * This function fills in xfs_mount_t fields based on mount args.
166 * Note: the superblock has _not_ yet been read in.
168 * Note that this function leaks the various device name allocations on
169 * failure. The caller takes care of them.
173 struct xfs_mount
*mp
,
177 struct super_block
*sb
= mp
->m_super
;
178 char *this_char
, *value
, *eov
;
182 int dmapi_implies_ikeep
= 1;
183 uchar_t iosizelog
= 0;
186 * Copy binary VFS mount flags we are interested in.
188 if (sb
->s_flags
& MS_RDONLY
)
189 mp
->m_flags
|= XFS_MOUNT_RDONLY
;
190 if (sb
->s_flags
& MS_DIRSYNC
)
191 mp
->m_flags
|= XFS_MOUNT_DIRSYNC
;
192 if (sb
->s_flags
& MS_SYNCHRONOUS
)
193 mp
->m_flags
|= XFS_MOUNT_WSYNC
;
196 * Set some default flags that could be cleared by the mount option
199 mp
->m_flags
|= XFS_MOUNT_BARRIER
;
200 mp
->m_flags
|= XFS_MOUNT_COMPAT_IOSIZE
;
201 mp
->m_flags
|= XFS_MOUNT_SMALL_INUMS
;
204 * These can be overridden by the mount option parsing.
212 while ((this_char
= strsep(&options
, ",")) != NULL
) {
215 if ((value
= strchr(this_char
, '=')) != NULL
)
218 if (!strcmp(this_char
, MNTOPT_LOGBUFS
)) {
219 if (!value
|| !*value
) {
221 "XFS: %s option requires an argument",
225 mp
->m_logbufs
= simple_strtoul(value
, &eov
, 10);
226 } else if (!strcmp(this_char
, MNTOPT_LOGBSIZE
)) {
227 if (!value
|| !*value
) {
229 "XFS: %s option requires an argument",
233 mp
->m_logbsize
= suffix_strtoul(value
, &eov
, 10);
234 } else if (!strcmp(this_char
, MNTOPT_LOGDEV
)) {
235 if (!value
|| !*value
) {
237 "XFS: %s option requires an argument",
241 mp
->m_logname
= kstrndup(value
, MAXNAMELEN
, GFP_KERNEL
);
244 } else if (!strcmp(this_char
, MNTOPT_MTPT
)) {
245 if (!value
|| !*value
) {
247 "XFS: %s option requires an argument",
251 *mtpt
= kstrndup(value
, MAXNAMELEN
, GFP_KERNEL
);
254 } else if (!strcmp(this_char
, MNTOPT_RTDEV
)) {
255 if (!value
|| !*value
) {
257 "XFS: %s option requires an argument",
261 mp
->m_rtname
= kstrndup(value
, MAXNAMELEN
, GFP_KERNEL
);
264 } else if (!strcmp(this_char
, MNTOPT_BIOSIZE
)) {
265 if (!value
|| !*value
) {
267 "XFS: %s option requires an argument",
271 iosize
= simple_strtoul(value
, &eov
, 10);
272 iosizelog
= ffs(iosize
) - 1;
273 } else if (!strcmp(this_char
, MNTOPT_ALLOCSIZE
)) {
274 if (!value
|| !*value
) {
276 "XFS: %s option requires an argument",
280 iosize
= suffix_strtoul(value
, &eov
, 10);
281 iosizelog
= ffs(iosize
) - 1;
282 } else if (!strcmp(this_char
, MNTOPT_GRPID
) ||
283 !strcmp(this_char
, MNTOPT_BSDGROUPS
)) {
284 mp
->m_flags
|= XFS_MOUNT_GRPID
;
285 } else if (!strcmp(this_char
, MNTOPT_NOGRPID
) ||
286 !strcmp(this_char
, MNTOPT_SYSVGROUPS
)) {
287 mp
->m_flags
&= ~XFS_MOUNT_GRPID
;
288 } else if (!strcmp(this_char
, MNTOPT_WSYNC
)) {
289 mp
->m_flags
|= XFS_MOUNT_WSYNC
;
290 } else if (!strcmp(this_char
, MNTOPT_OSYNCISOSYNC
)) {
291 mp
->m_flags
|= XFS_MOUNT_OSYNCISOSYNC
;
292 } else if (!strcmp(this_char
, MNTOPT_NORECOVERY
)) {
293 mp
->m_flags
|= XFS_MOUNT_NORECOVERY
;
294 } else if (!strcmp(this_char
, MNTOPT_INO64
)) {
296 mp
->m_flags
|= XFS_MOUNT_INO64
;
297 mp
->m_inoadd
= XFS_INO64_OFFSET
;
300 "XFS: %s option not allowed on this system",
304 } else if (!strcmp(this_char
, MNTOPT_NOALIGN
)) {
305 mp
->m_flags
|= XFS_MOUNT_NOALIGN
;
306 } else if (!strcmp(this_char
, MNTOPT_SWALLOC
)) {
307 mp
->m_flags
|= XFS_MOUNT_SWALLOC
;
308 } else if (!strcmp(this_char
, MNTOPT_SUNIT
)) {
309 if (!value
|| !*value
) {
311 "XFS: %s option requires an argument",
315 dsunit
= simple_strtoul(value
, &eov
, 10);
316 } else if (!strcmp(this_char
, MNTOPT_SWIDTH
)) {
317 if (!value
|| !*value
) {
319 "XFS: %s option requires an argument",
323 dswidth
= simple_strtoul(value
, &eov
, 10);
324 } else if (!strcmp(this_char
, MNTOPT_64BITINODE
)) {
325 mp
->m_flags
&= ~XFS_MOUNT_SMALL_INUMS
;
328 "XFS: %s option not allowed on this system",
332 } else if (!strcmp(this_char
, MNTOPT_NOUUID
)) {
333 mp
->m_flags
|= XFS_MOUNT_NOUUID
;
334 } else if (!strcmp(this_char
, MNTOPT_BARRIER
)) {
335 mp
->m_flags
|= XFS_MOUNT_BARRIER
;
336 } else if (!strcmp(this_char
, MNTOPT_NOBARRIER
)) {
337 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
338 } else if (!strcmp(this_char
, MNTOPT_IKEEP
)) {
339 mp
->m_flags
|= XFS_MOUNT_IKEEP
;
340 } else if (!strcmp(this_char
, MNTOPT_NOIKEEP
)) {
341 dmapi_implies_ikeep
= 0;
342 mp
->m_flags
&= ~XFS_MOUNT_IKEEP
;
343 } else if (!strcmp(this_char
, MNTOPT_LARGEIO
)) {
344 mp
->m_flags
&= ~XFS_MOUNT_COMPAT_IOSIZE
;
345 } else if (!strcmp(this_char
, MNTOPT_NOLARGEIO
)) {
346 mp
->m_flags
|= XFS_MOUNT_COMPAT_IOSIZE
;
347 } else if (!strcmp(this_char
, MNTOPT_ATTR2
)) {
348 mp
->m_flags
|= XFS_MOUNT_ATTR2
;
349 } else if (!strcmp(this_char
, MNTOPT_NOATTR2
)) {
350 mp
->m_flags
&= ~XFS_MOUNT_ATTR2
;
351 mp
->m_flags
|= XFS_MOUNT_NOATTR2
;
352 } else if (!strcmp(this_char
, MNTOPT_FILESTREAM
)) {
353 mp
->m_flags
|= XFS_MOUNT_FILESTREAMS
;
354 } else if (!strcmp(this_char
, MNTOPT_NOQUOTA
)) {
355 mp
->m_qflags
&= ~(XFS_UQUOTA_ACCT
| XFS_UQUOTA_ACTIVE
|
356 XFS_GQUOTA_ACCT
| XFS_GQUOTA_ACTIVE
|
357 XFS_PQUOTA_ACCT
| XFS_PQUOTA_ACTIVE
|
358 XFS_UQUOTA_ENFD
| XFS_OQUOTA_ENFD
);
359 } else if (!strcmp(this_char
, MNTOPT_QUOTA
) ||
360 !strcmp(this_char
, MNTOPT_UQUOTA
) ||
361 !strcmp(this_char
, MNTOPT_USRQUOTA
)) {
362 mp
->m_qflags
|= (XFS_UQUOTA_ACCT
| XFS_UQUOTA_ACTIVE
|
364 } else if (!strcmp(this_char
, MNTOPT_QUOTANOENF
) ||
365 !strcmp(this_char
, MNTOPT_UQUOTANOENF
)) {
366 mp
->m_qflags
|= (XFS_UQUOTA_ACCT
| XFS_UQUOTA_ACTIVE
);
367 mp
->m_qflags
&= ~XFS_UQUOTA_ENFD
;
368 } else if (!strcmp(this_char
, MNTOPT_PQUOTA
) ||
369 !strcmp(this_char
, MNTOPT_PRJQUOTA
)) {
370 mp
->m_qflags
|= (XFS_PQUOTA_ACCT
| XFS_PQUOTA_ACTIVE
|
372 } else if (!strcmp(this_char
, MNTOPT_PQUOTANOENF
)) {
373 mp
->m_qflags
|= (XFS_PQUOTA_ACCT
| XFS_PQUOTA_ACTIVE
);
374 mp
->m_qflags
&= ~XFS_OQUOTA_ENFD
;
375 } else if (!strcmp(this_char
, MNTOPT_GQUOTA
) ||
376 !strcmp(this_char
, MNTOPT_GRPQUOTA
)) {
377 mp
->m_qflags
|= (XFS_GQUOTA_ACCT
| XFS_GQUOTA_ACTIVE
|
379 } else if (!strcmp(this_char
, MNTOPT_GQUOTANOENF
)) {
380 mp
->m_qflags
|= (XFS_GQUOTA_ACCT
| XFS_GQUOTA_ACTIVE
);
381 mp
->m_qflags
&= ~XFS_OQUOTA_ENFD
;
382 } else if (!strcmp(this_char
, MNTOPT_DMAPI
)) {
383 mp
->m_flags
|= XFS_MOUNT_DMAPI
;
384 } else if (!strcmp(this_char
, MNTOPT_XDSM
)) {
385 mp
->m_flags
|= XFS_MOUNT_DMAPI
;
386 } else if (!strcmp(this_char
, MNTOPT_DMI
)) {
387 mp
->m_flags
|= XFS_MOUNT_DMAPI
;
388 } else if (!strcmp(this_char
, "ihashsize")) {
390 "XFS: ihashsize no longer used, option is deprecated.");
391 } else if (!strcmp(this_char
, "osyncisdsync")) {
392 /* no-op, this is now the default */
394 "XFS: osyncisdsync is now the default, option is deprecated.");
395 } else if (!strcmp(this_char
, "irixsgid")) {
397 "XFS: irixsgid is now a sysctl(2) variable, option is deprecated.");
400 "XFS: unknown mount option [%s].", this_char
);
406 * no recovery flag requires a read-only mount
408 if ((mp
->m_flags
& XFS_MOUNT_NORECOVERY
) &&
409 !(mp
->m_flags
& XFS_MOUNT_RDONLY
)) {
410 cmn_err(CE_WARN
, "XFS: no-recovery mounts must be read-only.");
414 if ((mp
->m_flags
& XFS_MOUNT_NOALIGN
) && (dsunit
|| dswidth
)) {
416 "XFS: sunit and swidth options incompatible with the noalign option");
420 if ((mp
->m_qflags
& (XFS_GQUOTA_ACCT
| XFS_GQUOTA_ACTIVE
)) &&
421 (mp
->m_qflags
& (XFS_PQUOTA_ACCT
| XFS_PQUOTA_ACTIVE
))) {
423 "XFS: cannot mount with both project and group quota");
427 if ((mp
->m_flags
& XFS_MOUNT_DMAPI
) && (!*mtpt
|| *mtpt
[0] == '\0')) {
428 printk("XFS: %s option needs the mount point option as well\n",
433 if ((dsunit
&& !dswidth
) || (!dsunit
&& dswidth
)) {
435 "XFS: sunit and swidth must be specified together");
439 if (dsunit
&& (dswidth
% dsunit
!= 0)) {
441 "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)",
447 * Applications using DMI filesystems often expect the
448 * inode generation number to be monotonically increasing.
449 * If we delete inode chunks we break this assumption, so
450 * keep unused inode chunks on disk for DMI filesystems
451 * until we come up with a better solution.
452 * Note that if "ikeep" or "noikeep" mount options are
453 * supplied, then they are honored.
455 if ((mp
->m_flags
& XFS_MOUNT_DMAPI
) && dmapi_implies_ikeep
)
456 mp
->m_flags
|= XFS_MOUNT_IKEEP
;
459 if (!(mp
->m_flags
& XFS_MOUNT_NOALIGN
)) {
461 * At this point the superblock has not been read
462 * in, therefore we do not know the block size.
463 * Before the mount call ends we will convert
467 mp
->m_dalign
= dsunit
;
468 mp
->m_flags
|= XFS_MOUNT_RETERR
;
472 mp
->m_swidth
= dswidth
;
475 if (mp
->m_logbufs
!= -1 &&
476 mp
->m_logbufs
!= 0 &&
477 (mp
->m_logbufs
< XLOG_MIN_ICLOGS
||
478 mp
->m_logbufs
> XLOG_MAX_ICLOGS
)) {
480 "XFS: invalid logbufs value: %d [not %d-%d]",
481 mp
->m_logbufs
, XLOG_MIN_ICLOGS
, XLOG_MAX_ICLOGS
);
482 return XFS_ERROR(EINVAL
);
484 if (mp
->m_logbsize
!= -1 &&
485 mp
->m_logbsize
!= 0 &&
486 (mp
->m_logbsize
< XLOG_MIN_RECORD_BSIZE
||
487 mp
->m_logbsize
> XLOG_MAX_RECORD_BSIZE
||
488 !is_power_of_2(mp
->m_logbsize
))) {
490 "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
492 return XFS_ERROR(EINVAL
);
495 mp
->m_fsname
= kstrndup(sb
->s_id
, MAXNAMELEN
, GFP_KERNEL
);
498 mp
->m_fsname_len
= strlen(mp
->m_fsname
) + 1;
501 if (iosizelog
> XFS_MAX_IO_LOG
||
502 iosizelog
< XFS_MIN_IO_LOG
) {
504 "XFS: invalid log iosize: %d [not %d-%d]",
505 iosizelog
, XFS_MIN_IO_LOG
,
507 return XFS_ERROR(EINVAL
);
510 mp
->m_flags
|= XFS_MOUNT_DFLT_IOSIZE
;
511 mp
->m_readio_log
= iosizelog
;
512 mp
->m_writeio_log
= iosizelog
;
518 struct proc_xfs_info
{
525 struct xfs_mount
*mp
,
528 static struct proc_xfs_info xfs_info_set
[] = {
529 /* the few simple ones we can get from the mount struct */
530 { XFS_MOUNT_IKEEP
, "," MNTOPT_IKEEP
},
531 { XFS_MOUNT_WSYNC
, "," MNTOPT_WSYNC
},
532 { XFS_MOUNT_INO64
, "," MNTOPT_INO64
},
533 { XFS_MOUNT_NOALIGN
, "," MNTOPT_NOALIGN
},
534 { XFS_MOUNT_SWALLOC
, "," MNTOPT_SWALLOC
},
535 { XFS_MOUNT_NOUUID
, "," MNTOPT_NOUUID
},
536 { XFS_MOUNT_NORECOVERY
, "," MNTOPT_NORECOVERY
},
537 { XFS_MOUNT_OSYNCISOSYNC
, "," MNTOPT_OSYNCISOSYNC
},
538 { XFS_MOUNT_ATTR2
, "," MNTOPT_ATTR2
},
539 { XFS_MOUNT_FILESTREAMS
, "," MNTOPT_FILESTREAM
},
540 { XFS_MOUNT_DMAPI
, "," MNTOPT_DMAPI
},
541 { XFS_MOUNT_GRPID
, "," MNTOPT_GRPID
},
544 static struct proc_xfs_info xfs_info_unset
[] = {
545 /* the few simple ones we can get from the mount struct */
546 { XFS_MOUNT_COMPAT_IOSIZE
, "," MNTOPT_LARGEIO
},
547 { XFS_MOUNT_BARRIER
, "," MNTOPT_NOBARRIER
},
548 { XFS_MOUNT_SMALL_INUMS
, "," MNTOPT_64BITINODE
},
551 struct proc_xfs_info
*xfs_infop
;
553 for (xfs_infop
= xfs_info_set
; xfs_infop
->flag
; xfs_infop
++) {
554 if (mp
->m_flags
& xfs_infop
->flag
)
555 seq_puts(m
, xfs_infop
->str
);
557 for (xfs_infop
= xfs_info_unset
; xfs_infop
->flag
; xfs_infop
++) {
558 if (!(mp
->m_flags
& xfs_infop
->flag
))
559 seq_puts(m
, xfs_infop
->str
);
562 if (mp
->m_flags
& XFS_MOUNT_DFLT_IOSIZE
)
563 seq_printf(m
, "," MNTOPT_ALLOCSIZE
"=%dk",
564 (int)(1 << mp
->m_writeio_log
) >> 10);
566 if (mp
->m_logbufs
> 0)
567 seq_printf(m
, "," MNTOPT_LOGBUFS
"=%d", mp
->m_logbufs
);
568 if (mp
->m_logbsize
> 0)
569 seq_printf(m
, "," MNTOPT_LOGBSIZE
"=%dk", mp
->m_logbsize
>> 10);
572 seq_printf(m
, "," MNTOPT_LOGDEV
"=%s", mp
->m_logname
);
574 seq_printf(m
, "," MNTOPT_RTDEV
"=%s", mp
->m_rtname
);
576 if (mp
->m_dalign
> 0)
577 seq_printf(m
, "," MNTOPT_SUNIT
"=%d",
578 (int)XFS_FSB_TO_BB(mp
, mp
->m_dalign
));
579 if (mp
->m_swidth
> 0)
580 seq_printf(m
, "," MNTOPT_SWIDTH
"=%d",
581 (int)XFS_FSB_TO_BB(mp
, mp
->m_swidth
));
583 if (mp
->m_qflags
& (XFS_UQUOTA_ACCT
|XFS_UQUOTA_ENFD
))
584 seq_puts(m
, "," MNTOPT_USRQUOTA
);
585 else if (mp
->m_qflags
& XFS_UQUOTA_ACCT
)
586 seq_puts(m
, "," MNTOPT_UQUOTANOENF
);
588 if (mp
->m_qflags
& (XFS_PQUOTA_ACCT
|XFS_OQUOTA_ENFD
))
589 seq_puts(m
, "," MNTOPT_PRJQUOTA
);
590 else if (mp
->m_qflags
& XFS_PQUOTA_ACCT
)
591 seq_puts(m
, "," MNTOPT_PQUOTANOENF
);
593 if (mp
->m_qflags
& (XFS_GQUOTA_ACCT
|XFS_OQUOTA_ENFD
))
594 seq_puts(m
, "," MNTOPT_GRPQUOTA
);
595 else if (mp
->m_qflags
& XFS_GQUOTA_ACCT
)
596 seq_puts(m
, "," MNTOPT_GQUOTANOENF
);
598 if (!(mp
->m_qflags
& XFS_ALL_QUOTA_ACCT
))
599 seq_puts(m
, "," MNTOPT_NOQUOTA
);
605 unsigned int blockshift
)
607 unsigned int pagefactor
= 1;
608 unsigned int bitshift
= BITS_PER_LONG
- 1;
610 /* Figure out maximum filesize, on Linux this can depend on
611 * the filesystem blocksize (on 32 bit platforms).
612 * __block_prepare_write does this in an [unsigned] long...
613 * page->index << (PAGE_CACHE_SHIFT - bbits)
614 * So, for page sized blocks (4K on 32 bit platforms),
615 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
616 * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
617 * but for smaller blocksizes it is less (bbits = log2 bsize).
618 * Note1: get_block_t takes a long (implicit cast from above)
619 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
620 * can optionally convert the [unsigned] long from above into
621 * an [unsigned] long long.
624 #if BITS_PER_LONG == 32
625 # if defined(CONFIG_LBD)
626 ASSERT(sizeof(sector_t
) == 8);
627 pagefactor
= PAGE_CACHE_SIZE
;
628 bitshift
= BITS_PER_LONG
;
630 pagefactor
= PAGE_CACHE_SIZE
>> (PAGE_CACHE_SHIFT
- blockshift
);
634 return (((__uint64_t
)pagefactor
) << bitshift
) - 1;
641 struct block_device
**bdevp
)
645 *bdevp
= open_bdev_exclusive(name
, FMODE_READ
|FMODE_WRITE
, mp
);
646 if (IS_ERR(*bdevp
)) {
647 error
= PTR_ERR(*bdevp
);
648 printk("XFS: Invalid device [%s], error=%d\n", name
, error
);
656 struct block_device
*bdev
)
659 close_bdev_exclusive(bdev
, FMODE_READ
|FMODE_WRITE
);
663 * Try to write out the superblock using barriers.
669 xfs_buf_t
*sbp
= xfs_getsb(mp
, 0);
674 XFS_BUF_UNDELAYWRITE(sbp
);
676 XFS_BUF_UNASYNC(sbp
);
677 XFS_BUF_ORDERED(sbp
);
680 error
= xfs_iowait(sbp
);
683 * Clear all the flags we set and possible error state in the
684 * buffer. We only did the write to try out whether barriers
685 * worked and shouldn't leave any traces in the superblock
689 XFS_BUF_ERROR(sbp
, 0);
690 XFS_BUF_UNORDERED(sbp
);
697 xfs_mountfs_check_barriers(xfs_mount_t
*mp
)
701 if (mp
->m_logdev_targp
!= mp
->m_ddev_targp
) {
702 xfs_fs_cmn_err(CE_NOTE
, mp
,
703 "Disabling barriers, not supported with external log device");
704 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
708 if (xfs_readonly_buftarg(mp
->m_ddev_targp
)) {
709 xfs_fs_cmn_err(CE_NOTE
, mp
,
710 "Disabling barriers, underlying device is readonly");
711 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
715 error
= xfs_barrier_test(mp
);
717 xfs_fs_cmn_err(CE_NOTE
, mp
,
718 "Disabling barriers, trial barrier write failed");
719 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
725 xfs_blkdev_issue_flush(
726 xfs_buftarg_t
*buftarg
)
728 blkdev_issue_flush(buftarg
->bt_bdev
, NULL
);
733 struct xfs_mount
*mp
)
735 if (mp
->m_logdev_targp
&& mp
->m_logdev_targp
!= mp
->m_ddev_targp
) {
736 struct block_device
*logdev
= mp
->m_logdev_targp
->bt_bdev
;
737 xfs_free_buftarg(mp
->m_logdev_targp
);
738 xfs_blkdev_put(logdev
);
740 if (mp
->m_rtdev_targp
) {
741 struct block_device
*rtdev
= mp
->m_rtdev_targp
->bt_bdev
;
742 xfs_free_buftarg(mp
->m_rtdev_targp
);
743 xfs_blkdev_put(rtdev
);
745 xfs_free_buftarg(mp
->m_ddev_targp
);
749 * The file system configurations are:
750 * (1) device (partition) with data and internal log
751 * (2) logical volume with data and log subvolumes.
752 * (3) logical volume with data, log, and realtime subvolumes.
754 * We only have to handle opening the log and realtime volumes here if
755 * they are present. The data subvolume has already been opened by
756 * get_sb_bdev() and is stored in sb->s_bdev.
760 struct xfs_mount
*mp
)
762 struct block_device
*ddev
= mp
->m_super
->s_bdev
;
763 struct block_device
*logdev
= NULL
, *rtdev
= NULL
;
767 * Open real time and log devices - order is important.
770 error
= xfs_blkdev_get(mp
, mp
->m_logname
, &logdev
);
776 error
= xfs_blkdev_get(mp
, mp
->m_rtname
, &rtdev
);
778 goto out_close_logdev
;
780 if (rtdev
== ddev
|| rtdev
== logdev
) {
782 "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
784 goto out_close_rtdev
;
789 * Setup xfs_mount buffer target pointers
792 mp
->m_ddev_targp
= xfs_alloc_buftarg(ddev
, 0);
793 if (!mp
->m_ddev_targp
)
794 goto out_close_rtdev
;
797 mp
->m_rtdev_targp
= xfs_alloc_buftarg(rtdev
, 1);
798 if (!mp
->m_rtdev_targp
)
799 goto out_free_ddev_targ
;
802 if (logdev
&& logdev
!= ddev
) {
803 mp
->m_logdev_targp
= xfs_alloc_buftarg(logdev
, 1);
804 if (!mp
->m_logdev_targp
)
805 goto out_free_rtdev_targ
;
807 mp
->m_logdev_targp
= mp
->m_ddev_targp
;
813 if (mp
->m_rtdev_targp
)
814 xfs_free_buftarg(mp
->m_rtdev_targp
);
816 xfs_free_buftarg(mp
->m_ddev_targp
);
819 xfs_blkdev_put(rtdev
);
821 if (logdev
&& logdev
!= ddev
)
822 xfs_blkdev_put(logdev
);
828 * Setup xfs_mount buffer target pointers based on superblock
832 struct xfs_mount
*mp
)
836 error
= xfs_setsize_buftarg(mp
->m_ddev_targp
, mp
->m_sb
.sb_blocksize
,
837 mp
->m_sb
.sb_sectsize
);
841 if (mp
->m_logdev_targp
&& mp
->m_logdev_targp
!= mp
->m_ddev_targp
) {
842 unsigned int log_sector_size
= BBSIZE
;
844 if (xfs_sb_version_hassector(&mp
->m_sb
))
845 log_sector_size
= mp
->m_sb
.sb_logsectsize
;
846 error
= xfs_setsize_buftarg(mp
->m_logdev_targp
,
847 mp
->m_sb
.sb_blocksize
,
852 if (mp
->m_rtdev_targp
) {
853 error
= xfs_setsize_buftarg(mp
->m_rtdev_targp
,
854 mp
->m_sb
.sb_blocksize
,
855 mp
->m_sb
.sb_sectsize
);
864 * XFS AIL push thread support
868 struct xfs_ail
*ailp
,
869 xfs_lsn_t threshold_lsn
)
871 ailp
->xa_target
= threshold_lsn
;
872 wake_up_process(ailp
->xa_task
);
879 struct xfs_ail
*ailp
= data
;
880 xfs_lsn_t last_pushed_lsn
= 0;
883 while (!kthread_should_stop()) {
885 schedule_timeout_interruptible(msecs_to_jiffies(tout
));
891 ASSERT(ailp
->xa_mount
->m_log
);
892 if (XFS_FORCED_SHUTDOWN(ailp
->xa_mount
))
895 tout
= xfsaild_push(ailp
, &last_pushed_lsn
);
903 struct xfs_ail
*ailp
)
906 ailp
->xa_task
= kthread_run(xfsaild
, ailp
, "xfsaild");
907 if (IS_ERR(ailp
->xa_task
))
908 return -PTR_ERR(ailp
->xa_task
);
914 struct xfs_ail
*ailp
)
916 kthread_stop(ailp
->xa_task
);
920 /* Catch misguided souls that try to use this interface on XFS */
921 STATIC
struct inode
*
923 struct super_block
*sb
)
930 * Now that the generic code is guaranteed not to be accessing
931 * the linux inode, we can reclaim the inode.
934 xfs_fs_destroy_inode(
937 xfs_inode_t
*ip
= XFS_I(inode
);
939 XFS_STATS_INC(vn_reclaim
);
941 panic("%s: cannot reclaim 0x%p\n", __func__
, inode
);
945 * Slab object creation initialisation for the XFS inode.
946 * This covers only the idempotent fields in the XFS inode;
947 * all other fields need to be initialised on allocation
948 * from the slab. This avoids the need to repeatedly intialise
949 * fields in the xfs inode that left in the initialise state
950 * when freeing the inode.
953 xfs_fs_inode_init_once(
956 struct xfs_inode
*ip
= inode
;
958 memset(ip
, 0, sizeof(struct xfs_inode
));
961 inode_init_once(VFS_I(ip
));
964 atomic_set(&ip
->i_iocount
, 0);
965 atomic_set(&ip
->i_pincount
, 0);
966 spin_lock_init(&ip
->i_flags_lock
);
967 init_waitqueue_head(&ip
->i_ipin_wait
);
969 * Because we want to use a counting completion, complete
970 * the flush completion once to allow a single access to
971 * the flush completion without blocking.
973 init_completion(&ip
->i_flush
);
974 complete(&ip
->i_flush
);
976 mrlock_init(&ip
->i_lock
, MRLOCK_ALLOW_EQUAL_PRI
|MRLOCK_BARRIER
,
977 "xfsino", ip
->i_ino
);
978 mrlock_init(&ip
->i_iolock
, MRLOCK_BARRIER
, "xfsio", ip
->i_ino
);
982 * Attempt to flush the inode, this will actually fail
983 * if the inode is pinned, but we dirty the inode again
984 * at the point when it is unpinned after a log write,
985 * since this is when the inode itself becomes flushable.
992 struct xfs_inode
*ip
= XFS_I(inode
);
996 xfs_itrace_entry(ip
);
998 error
= xfs_wait_on_pages(ip
, 0, -1);
1001 flags
|= FLUSH_SYNC
;
1003 error
= xfs_inode_flush(ip
, flags
);
1007 * if we failed to write out the inode then mark
1008 * it dirty again so we'll try again later.
1011 xfs_mark_inode_dirty_sync(ip
);
1018 struct inode
*inode
)
1020 xfs_inode_t
*ip
= XFS_I(inode
);
1022 xfs_itrace_entry(ip
);
1023 XFS_STATS_INC(vn_rele
);
1024 XFS_STATS_INC(vn_remove
);
1025 XFS_STATS_DEC(vn_active
);
1032 struct xfs_mount
*mp
)
1034 kfree(mp
->m_fsname
);
1035 kfree(mp
->m_rtname
);
1036 kfree(mp
->m_logname
);
1041 struct super_block
*sb
)
1043 struct xfs_mount
*mp
= XFS_M(sb
);
1044 struct xfs_inode
*rip
= mp
->m_rootip
;
1045 int unmount_event_flags
= 0;
1048 xfs_sync_inodes(mp
, SYNC_ATTR
|SYNC_DELWRI
);
1051 if (mp
->m_flags
& XFS_MOUNT_DMAPI
) {
1052 unmount_event_flags
=
1053 (mp
->m_dmevmask
& (1 << DM_EVENT_UNMOUNT
)) ?
1054 0 : DM_FLAGS_UNWANTED
;
1056 * Ignore error from dmapi here, first unmount is not allowed
1057 * to fail anyway, and second we wouldn't want to fail a
1058 * unmount because of dmapi.
1060 XFS_SEND_PREUNMOUNT(mp
, rip
, DM_RIGHT_NULL
, rip
, DM_RIGHT_NULL
,
1061 NULL
, NULL
, 0, 0, unmount_event_flags
);
1066 * Blow away any referenced inode in the filestreams cache.
1067 * This can and will cause log traffic as inodes go inactive
1070 xfs_filestream_unmount(mp
);
1072 XFS_bflush(mp
->m_ddev_targp
);
1074 if (mp
->m_flags
& XFS_MOUNT_DMAPI
) {
1075 XFS_SEND_UNMOUNT(mp
, rip
, DM_RIGHT_NULL
, 0, 0,
1076 unmount_event_flags
);
1081 xfs_icsb_destroy_counters(mp
);
1082 xfs_close_devices(mp
);
1085 xfs_free_fsname(mp
);
1091 struct super_block
*sb
)
1093 if (!(sb
->s_flags
& MS_RDONLY
))
1094 xfs_sync_fsdata(XFS_M(sb
), 0);
1100 struct super_block
*sb
,
1103 struct xfs_mount
*mp
= XFS_M(sb
);
1107 * Treat a sync operation like a freeze. This is to work
1108 * around a race in sync_inodes() which works in two phases
1109 * - an asynchronous flush, which can write out an inode
1110 * without waiting for file size updates to complete, and a
1111 * synchronous flush, which wont do anything because the
1112 * async flush removed the inode's dirty flag. Also
1113 * sync_inodes() will not see any files that just have
1114 * outstanding transactions to be flushed because we don't
1115 * dirty the Linux inode until after the transaction I/O
1118 if (wait
|| unlikely(sb
->s_frozen
== SB_FREEZE_WRITE
))
1119 error
= xfs_quiesce_data(mp
);
1121 error
= xfs_sync_fsdata(mp
, 0);
1124 if (unlikely(laptop_mode
)) {
1125 int prev_sync_seq
= mp
->m_sync_seq
;
1128 * The disk must be active because we're syncing.
1129 * We schedule xfssyncd now (now that the disk is
1130 * active) instead of later (when it might not be).
1132 wake_up_process(mp
->m_sync_task
);
1134 * We have to wait for the sync iteration to complete.
1135 * If we don't, the disk activity caused by the sync
1136 * will come after the sync is completed, and that
1137 * triggers another sync from laptop mode.
1139 wait_event(mp
->m_wait_single_sync_task
,
1140 mp
->m_sync_seq
!= prev_sync_seq
);
1148 struct dentry
*dentry
,
1149 struct kstatfs
*statp
)
1151 struct xfs_mount
*mp
= XFS_M(dentry
->d_sb
);
1152 xfs_sb_t
*sbp
= &mp
->m_sb
;
1153 __uint64_t fakeinos
, id
;
1156 statp
->f_type
= XFS_SB_MAGIC
;
1157 statp
->f_namelen
= MAXNAMELEN
- 1;
1159 id
= huge_encode_dev(mp
->m_ddev_targp
->bt_dev
);
1160 statp
->f_fsid
.val
[0] = (u32
)id
;
1161 statp
->f_fsid
.val
[1] = (u32
)(id
>> 32);
1163 xfs_icsb_sync_counters(mp
, XFS_ICSB_LAZY_COUNT
);
1165 spin_lock(&mp
->m_sb_lock
);
1166 statp
->f_bsize
= sbp
->sb_blocksize
;
1167 lsize
= sbp
->sb_logstart
? sbp
->sb_logblocks
: 0;
1168 statp
->f_blocks
= sbp
->sb_dblocks
- lsize
;
1169 statp
->f_bfree
= statp
->f_bavail
=
1170 sbp
->sb_fdblocks
- XFS_ALLOC_SET_ASIDE(mp
);
1171 fakeinos
= statp
->f_bfree
<< sbp
->sb_inopblog
;
1173 fakeinos
+= mp
->m_inoadd
;
1176 MIN(sbp
->sb_icount
+ fakeinos
, (__uint64_t
)XFS_MAXINUMBER
);
1177 if (mp
->m_maxicount
)
1181 statp
->f_files
= min_t(typeof(statp
->f_files
),
1184 statp
->f_ffree
= statp
->f_files
- (sbp
->sb_icount
- sbp
->sb_ifree
);
1185 spin_unlock(&mp
->m_sb_lock
);
1187 XFS_QM_DQSTATVFS(XFS_I(dentry
->d_inode
), statp
);
1193 struct super_block
*sb
,
1197 struct xfs_mount
*mp
= XFS_M(sb
);
1198 substring_t args
[MAX_OPT_ARGS
];
1201 while ((p
= strsep(&options
, ",")) != NULL
) {
1207 token
= match_token(p
, tokens
, args
);
1210 mp
->m_flags
|= XFS_MOUNT_BARRIER
;
1213 * Test if barriers are actually working if we can,
1214 * else delay this check until the filesystem is
1217 if (!(mp
->m_flags
& XFS_MOUNT_RDONLY
))
1218 xfs_mountfs_check_barriers(mp
);
1221 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
1225 * Logically we would return an error here to prevent
1226 * users from believing they might have changed
1227 * mount options using remount which can't be changed.
1229 * But unfortunately mount(8) adds all options from
1230 * mtab and fstab to the mount arguments in some cases
1231 * so we can't blindly reject options, but have to
1232 * check for each specified option if it actually
1233 * differs from the currently set option and only
1234 * reject it if that's the case.
1236 * Until that is implemented we return success for
1237 * every remount request, and silently ignore all
1238 * options that we can't actually change.
1242 "XFS: mount option \"%s\" not supported for remount\n", p
);
1251 if ((mp
->m_flags
& XFS_MOUNT_RDONLY
) && !(*flags
& MS_RDONLY
)) {
1252 mp
->m_flags
&= ~XFS_MOUNT_RDONLY
;
1253 if (mp
->m_flags
& XFS_MOUNT_BARRIER
)
1254 xfs_mountfs_check_barriers(mp
);
1258 if (!(mp
->m_flags
& XFS_MOUNT_RDONLY
) && (*flags
& MS_RDONLY
)) {
1259 xfs_quiesce_data(mp
);
1260 xfs_quiesce_attr(mp
);
1261 mp
->m_flags
|= XFS_MOUNT_RDONLY
;
1268 * Second stage of a freeze. The data is already frozen so we only
1269 * need to take care of the metadata. Once that's done write a dummy
1270 * record to dirty the log in case of a crash while frozen.
1274 struct super_block
*sb
)
1276 struct xfs_mount
*mp
= XFS_M(sb
);
1278 xfs_quiesce_attr(mp
);
1279 return -xfs_fs_log_dummy(mp
);
1283 xfs_fs_show_options(
1285 struct vfsmount
*mnt
)
1287 return -xfs_showargs(XFS_M(mnt
->mnt_sb
), m
);
1292 struct super_block
*sb
,
1295 return -XFS_QM_QUOTACTL(XFS_M(sb
), Q_XQUOTASYNC
, 0, NULL
);
1300 struct super_block
*sb
,
1301 struct fs_quota_stat
*fqs
)
1303 return -XFS_QM_QUOTACTL(XFS_M(sb
), Q_XGETQSTAT
, 0, (caddr_t
)fqs
);
1308 struct super_block
*sb
,
1312 return -XFS_QM_QUOTACTL(XFS_M(sb
), op
, 0, (caddr_t
)&flags
);
1317 struct super_block
*sb
,
1320 struct fs_disk_quota
*fdq
)
1322 return -XFS_QM_QUOTACTL(XFS_M(sb
),
1323 (type
== USRQUOTA
) ? Q_XGETQUOTA
:
1324 ((type
== GRPQUOTA
) ? Q_XGETGQUOTA
:
1325 Q_XGETPQUOTA
), id
, (caddr_t
)fdq
);
1330 struct super_block
*sb
,
1333 struct fs_disk_quota
*fdq
)
1335 return -XFS_QM_QUOTACTL(XFS_M(sb
),
1336 (type
== USRQUOTA
) ? Q_XSETQLIM
:
1337 ((type
== GRPQUOTA
) ? Q_XSETGQLIM
:
1338 Q_XSETPQLIM
), id
, (caddr_t
)fdq
);
1342 * This function fills in xfs_mount_t fields based on mount args.
1343 * Note: the superblock _has_ now been read in.
1347 struct xfs_mount
*mp
)
1349 int ronly
= (mp
->m_flags
& XFS_MOUNT_RDONLY
);
1351 /* Fail a mount where the logbuf is smaller than the log stripe */
1352 if (xfs_sb_version_haslogv2(&mp
->m_sb
)) {
1353 if (mp
->m_logbsize
<= 0 &&
1354 mp
->m_sb
.sb_logsunit
> XLOG_BIG_RECORD_BSIZE
) {
1355 mp
->m_logbsize
= mp
->m_sb
.sb_logsunit
;
1356 } else if (mp
->m_logbsize
> 0 &&
1357 mp
->m_logbsize
< mp
->m_sb
.sb_logsunit
) {
1359 "XFS: logbuf size must be greater than or equal to log stripe size");
1360 return XFS_ERROR(EINVAL
);
1363 /* Fail a mount if the logbuf is larger than 32K */
1364 if (mp
->m_logbsize
> XLOG_BIG_RECORD_BSIZE
) {
1366 "XFS: logbuf size for version 1 logs must be 16K or 32K");
1367 return XFS_ERROR(EINVAL
);
1372 * mkfs'ed attr2 will turn on attr2 mount unless explicitly
1373 * told by noattr2 to turn it off
1375 if (xfs_sb_version_hasattr2(&mp
->m_sb
) &&
1376 !(mp
->m_flags
& XFS_MOUNT_NOATTR2
))
1377 mp
->m_flags
|= XFS_MOUNT_ATTR2
;
1380 * prohibit r/w mounts of read-only filesystems
1382 if ((mp
->m_sb
.sb_flags
& XFS_SBF_READONLY
) && !ronly
) {
1384 "XFS: cannot mount a read-only filesystem as read-write");
1385 return XFS_ERROR(EROFS
);
1393 struct super_block
*sb
,
1398 struct xfs_mount
*mp
= NULL
;
1399 int flags
= 0, error
= ENOMEM
;
1402 mp
= kzalloc(sizeof(struct xfs_mount
), GFP_KERNEL
);
1406 spin_lock_init(&mp
->m_sb_lock
);
1407 mutex_init(&mp
->m_growlock
);
1408 atomic_set(&mp
->m_active_trans
, 0);
1409 INIT_LIST_HEAD(&mp
->m_sync_list
);
1410 spin_lock_init(&mp
->m_sync_lock
);
1411 init_waitqueue_head(&mp
->m_wait_single_sync_task
);
1416 error
= xfs_parseargs(mp
, (char *)data
, &mtpt
);
1418 goto out_free_fsname
;
1420 sb_min_blocksize(sb
, BBSIZE
);
1421 sb
->s_xattr
= xfs_xattr_handlers
;
1422 sb
->s_export_op
= &xfs_export_operations
;
1423 sb
->s_qcop
= &xfs_quotactl_operations
;
1424 sb
->s_op
= &xfs_super_operations
;
1426 error
= xfs_dmops_get(mp
);
1428 goto out_free_fsname
;
1429 error
= xfs_qmops_get(mp
);
1434 flags
|= XFS_MFSI_QUIET
;
1436 error
= xfs_open_devices(mp
);
1440 if (xfs_icsb_init_counters(mp
))
1441 mp
->m_flags
|= XFS_MOUNT_NO_PERCPU_SB
;
1443 error
= xfs_readsb(mp
, flags
);
1445 goto out_destroy_counters
;
1447 error
= xfs_finish_flags(mp
);
1451 error
= xfs_setup_devices(mp
);
1455 if (mp
->m_flags
& XFS_MOUNT_BARRIER
)
1456 xfs_mountfs_check_barriers(mp
);
1458 error
= xfs_filestream_mount(mp
);
1462 error
= xfs_mountfs(mp
);
1464 goto out_filestream_unmount
;
1466 XFS_SEND_MOUNT(mp
, DM_RIGHT_NULL
, mtpt
, mp
->m_fsname
);
1469 sb
->s_magic
= XFS_SB_MAGIC
;
1470 sb
->s_blocksize
= mp
->m_sb
.sb_blocksize
;
1471 sb
->s_blocksize_bits
= ffs(sb
->s_blocksize
) - 1;
1472 sb
->s_maxbytes
= xfs_max_file_offset(sb
->s_blocksize_bits
);
1473 sb
->s_time_gran
= 1;
1474 set_posix_acl_flag(sb
);
1476 root
= igrab(VFS_I(mp
->m_rootip
));
1481 if (is_bad_inode(root
)) {
1485 sb
->s_root
= d_alloc_root(root
);
1491 error
= xfs_syncd_init(mp
);
1497 xfs_itrace_exit(XFS_I(sb
->s_root
->d_inode
));
1500 out_filestream_unmount
:
1501 xfs_filestream_unmount(mp
);
1504 out_destroy_counters
:
1505 xfs_icsb_destroy_counters(mp
);
1506 xfs_close_devices(mp
);
1512 xfs_free_fsname(mp
);
1528 * Blow away any referenced inode in the filestreams cache.
1529 * This can and will cause log traffic as inodes go inactive
1532 xfs_filestream_unmount(mp
);
1534 XFS_bflush(mp
->m_ddev_targp
);
1542 struct file_system_type
*fs_type
,
1544 const char *dev_name
,
1546 struct vfsmount
*mnt
)
1548 return get_sb_bdev(fs_type
, flags
, dev_name
, data
, xfs_fs_fill_super
,
1552 static struct super_operations xfs_super_operations
= {
1553 .alloc_inode
= xfs_fs_alloc_inode
,
1554 .destroy_inode
= xfs_fs_destroy_inode
,
1555 .write_inode
= xfs_fs_write_inode
,
1556 .clear_inode
= xfs_fs_clear_inode
,
1557 .put_super
= xfs_fs_put_super
,
1558 .write_super
= xfs_fs_write_super
,
1559 .sync_fs
= xfs_fs_sync_super
,
1560 .freeze_fs
= xfs_fs_freeze
,
1561 .statfs
= xfs_fs_statfs
,
1562 .remount_fs
= xfs_fs_remount
,
1563 .show_options
= xfs_fs_show_options
,
1566 static struct quotactl_ops xfs_quotactl_operations
= {
1567 .quota_sync
= xfs_fs_quotasync
,
1568 .get_xstate
= xfs_fs_getxstate
,
1569 .set_xstate
= xfs_fs_setxstate
,
1570 .get_xquota
= xfs_fs_getxquota
,
1571 .set_xquota
= xfs_fs_setxquota
,
1574 static struct file_system_type xfs_fs_type
= {
1575 .owner
= THIS_MODULE
,
1577 .get_sb
= xfs_fs_get_sb
,
1578 .kill_sb
= kill_block_super
,
1579 .fs_flags
= FS_REQUIRES_DEV
,
1583 xfs_alloc_trace_bufs(void)
1585 #ifdef XFS_ALLOC_TRACE
1586 xfs_alloc_trace_buf
= ktrace_alloc(XFS_ALLOC_TRACE_SIZE
, KM_MAYFAIL
);
1587 if (!xfs_alloc_trace_buf
)
1590 #ifdef XFS_BMAP_TRACE
1591 xfs_bmap_trace_buf
= ktrace_alloc(XFS_BMAP_TRACE_SIZE
, KM_MAYFAIL
);
1592 if (!xfs_bmap_trace_buf
)
1593 goto out_free_alloc_trace
;
1595 #ifdef XFS_BTREE_TRACE
1596 xfs_allocbt_trace_buf
= ktrace_alloc(XFS_ALLOCBT_TRACE_SIZE
,
1598 if (!xfs_allocbt_trace_buf
)
1599 goto out_free_bmap_trace
;
1601 xfs_inobt_trace_buf
= ktrace_alloc(XFS_INOBT_TRACE_SIZE
, KM_MAYFAIL
);
1602 if (!xfs_inobt_trace_buf
)
1603 goto out_free_allocbt_trace
;
1605 xfs_bmbt_trace_buf
= ktrace_alloc(XFS_BMBT_TRACE_SIZE
, KM_MAYFAIL
);
1606 if (!xfs_bmbt_trace_buf
)
1607 goto out_free_inobt_trace
;
1609 #ifdef XFS_ATTR_TRACE
1610 xfs_attr_trace_buf
= ktrace_alloc(XFS_ATTR_TRACE_SIZE
, KM_MAYFAIL
);
1611 if (!xfs_attr_trace_buf
)
1612 goto out_free_bmbt_trace
;
1614 #ifdef XFS_DIR2_TRACE
1615 xfs_dir2_trace_buf
= ktrace_alloc(XFS_DIR2_GTRACE_SIZE
, KM_MAYFAIL
);
1616 if (!xfs_dir2_trace_buf
)
1617 goto out_free_attr_trace
;
1622 #ifdef XFS_DIR2_TRACE
1623 out_free_attr_trace
:
1625 #ifdef XFS_ATTR_TRACE
1626 ktrace_free(xfs_attr_trace_buf
);
1627 out_free_bmbt_trace
:
1629 #ifdef XFS_BTREE_TRACE
1630 ktrace_free(xfs_bmbt_trace_buf
);
1631 out_free_inobt_trace
:
1632 ktrace_free(xfs_inobt_trace_buf
);
1633 out_free_allocbt_trace
:
1634 ktrace_free(xfs_allocbt_trace_buf
);
1635 out_free_bmap_trace
:
1637 #ifdef XFS_BMAP_TRACE
1638 ktrace_free(xfs_bmap_trace_buf
);
1639 out_free_alloc_trace
:
1641 #ifdef XFS_ALLOC_TRACE
1642 ktrace_free(xfs_alloc_trace_buf
);
1649 xfs_free_trace_bufs(void)
1651 #ifdef XFS_DIR2_TRACE
1652 ktrace_free(xfs_dir2_trace_buf
);
1654 #ifdef XFS_ATTR_TRACE
1655 ktrace_free(xfs_attr_trace_buf
);
1657 #ifdef XFS_BTREE_TRACE
1658 ktrace_free(xfs_bmbt_trace_buf
);
1659 ktrace_free(xfs_inobt_trace_buf
);
1660 ktrace_free(xfs_allocbt_trace_buf
);
1662 #ifdef XFS_BMAP_TRACE
1663 ktrace_free(xfs_bmap_trace_buf
);
1665 #ifdef XFS_ALLOC_TRACE
1666 ktrace_free(xfs_alloc_trace_buf
);
1671 xfs_init_zones(void)
1674 xfs_ioend_zone
= kmem_zone_init(sizeof(xfs_ioend_t
), "xfs_ioend");
1675 if (!xfs_ioend_zone
)
1678 xfs_ioend_pool
= mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE
,
1680 if (!xfs_ioend_pool
)
1681 goto out_destroy_ioend_zone
;
1683 xfs_log_ticket_zone
= kmem_zone_init(sizeof(xlog_ticket_t
),
1685 if (!xfs_log_ticket_zone
)
1686 goto out_destroy_ioend_pool
;
1688 xfs_bmap_free_item_zone
= kmem_zone_init(sizeof(xfs_bmap_free_item_t
),
1689 "xfs_bmap_free_item");
1690 if (!xfs_bmap_free_item_zone
)
1691 goto out_destroy_log_ticket_zone
;
1693 xfs_btree_cur_zone
= kmem_zone_init(sizeof(xfs_btree_cur_t
),
1695 if (!xfs_btree_cur_zone
)
1696 goto out_destroy_bmap_free_item_zone
;
1698 xfs_da_state_zone
= kmem_zone_init(sizeof(xfs_da_state_t
),
1700 if (!xfs_da_state_zone
)
1701 goto out_destroy_btree_cur_zone
;
1703 xfs_dabuf_zone
= kmem_zone_init(sizeof(xfs_dabuf_t
), "xfs_dabuf");
1704 if (!xfs_dabuf_zone
)
1705 goto out_destroy_da_state_zone
;
1707 xfs_ifork_zone
= kmem_zone_init(sizeof(xfs_ifork_t
), "xfs_ifork");
1708 if (!xfs_ifork_zone
)
1709 goto out_destroy_dabuf_zone
;
1711 xfs_trans_zone
= kmem_zone_init(sizeof(xfs_trans_t
), "xfs_trans");
1712 if (!xfs_trans_zone
)
1713 goto out_destroy_ifork_zone
;
1716 * The size of the zone allocated buf log item is the maximum
1717 * size possible under XFS. This wastes a little bit of memory,
1718 * but it is much faster.
1720 xfs_buf_item_zone
= kmem_zone_init((sizeof(xfs_buf_log_item_t
) +
1721 (((XFS_MAX_BLOCKSIZE
/ XFS_BLI_CHUNK
) /
1722 NBWORD
) * sizeof(int))), "xfs_buf_item");
1723 if (!xfs_buf_item_zone
)
1724 goto out_destroy_trans_zone
;
1726 xfs_efd_zone
= kmem_zone_init((sizeof(xfs_efd_log_item_t
) +
1727 ((XFS_EFD_MAX_FAST_EXTENTS
- 1) *
1728 sizeof(xfs_extent_t
))), "xfs_efd_item");
1730 goto out_destroy_buf_item_zone
;
1732 xfs_efi_zone
= kmem_zone_init((sizeof(xfs_efi_log_item_t
) +
1733 ((XFS_EFI_MAX_FAST_EXTENTS
- 1) *
1734 sizeof(xfs_extent_t
))), "xfs_efi_item");
1736 goto out_destroy_efd_zone
;
1739 kmem_zone_init_flags(sizeof(xfs_inode_t
), "xfs_inode",
1740 KM_ZONE_HWALIGN
| KM_ZONE_RECLAIM
| KM_ZONE_SPREAD
,
1741 xfs_fs_inode_init_once
);
1742 if (!xfs_inode_zone
)
1743 goto out_destroy_efi_zone
;
1746 kmem_zone_init_flags(sizeof(xfs_inode_log_item_t
), "xfs_ili",
1747 KM_ZONE_SPREAD
, NULL
);
1749 goto out_destroy_inode_zone
;
1751 #ifdef CONFIG_XFS_POSIX_ACL
1752 xfs_acl_zone
= kmem_zone_init(sizeof(xfs_acl_t
), "xfs_acl");
1754 goto out_destroy_ili_zone
;
1759 #ifdef CONFIG_XFS_POSIX_ACL
1760 out_destroy_ili_zone
:
1762 kmem_zone_destroy(xfs_ili_zone
);
1763 out_destroy_inode_zone
:
1764 kmem_zone_destroy(xfs_inode_zone
);
1765 out_destroy_efi_zone
:
1766 kmem_zone_destroy(xfs_efi_zone
);
1767 out_destroy_efd_zone
:
1768 kmem_zone_destroy(xfs_efd_zone
);
1769 out_destroy_buf_item_zone
:
1770 kmem_zone_destroy(xfs_buf_item_zone
);
1771 out_destroy_trans_zone
:
1772 kmem_zone_destroy(xfs_trans_zone
);
1773 out_destroy_ifork_zone
:
1774 kmem_zone_destroy(xfs_ifork_zone
);
1775 out_destroy_dabuf_zone
:
1776 kmem_zone_destroy(xfs_dabuf_zone
);
1777 out_destroy_da_state_zone
:
1778 kmem_zone_destroy(xfs_da_state_zone
);
1779 out_destroy_btree_cur_zone
:
1780 kmem_zone_destroy(xfs_btree_cur_zone
);
1781 out_destroy_bmap_free_item_zone
:
1782 kmem_zone_destroy(xfs_bmap_free_item_zone
);
1783 out_destroy_log_ticket_zone
:
1784 kmem_zone_destroy(xfs_log_ticket_zone
);
1785 out_destroy_ioend_pool
:
1786 mempool_destroy(xfs_ioend_pool
);
1787 out_destroy_ioend_zone
:
1788 kmem_zone_destroy(xfs_ioend_zone
);
1794 xfs_destroy_zones(void)
1796 #ifdef CONFIG_XFS_POSIX_ACL
1797 kmem_zone_destroy(xfs_acl_zone
);
1799 kmem_zone_destroy(xfs_ili_zone
);
1800 kmem_zone_destroy(xfs_inode_zone
);
1801 kmem_zone_destroy(xfs_efi_zone
);
1802 kmem_zone_destroy(xfs_efd_zone
);
1803 kmem_zone_destroy(xfs_buf_item_zone
);
1804 kmem_zone_destroy(xfs_trans_zone
);
1805 kmem_zone_destroy(xfs_ifork_zone
);
1806 kmem_zone_destroy(xfs_dabuf_zone
);
1807 kmem_zone_destroy(xfs_da_state_zone
);
1808 kmem_zone_destroy(xfs_btree_cur_zone
);
1809 kmem_zone_destroy(xfs_bmap_free_item_zone
);
1810 kmem_zone_destroy(xfs_log_ticket_zone
);
1811 mempool_destroy(xfs_ioend_pool
);
1812 kmem_zone_destroy(xfs_ioend_zone
);
1821 printk(KERN_INFO XFS_VERSION_STRING
" with "
1822 XFS_BUILD_OPTIONS
" enabled\n");
1828 error
= xfs_init_zones();
1832 error
= xfs_alloc_trace_bufs();
1834 goto out_destroy_zones
;
1836 error
= xfs_mru_cache_init();
1838 goto out_free_trace_buffers
;
1840 error
= xfs_filestream_init();
1842 goto out_mru_cache_uninit
;
1844 error
= xfs_buf_init();
1846 goto out_filestream_uninit
;
1848 error
= xfs_init_procfs();
1850 goto out_buf_terminate
;
1852 error
= xfs_sysctl_register();
1854 goto out_cleanup_procfs
;
1858 error
= register_filesystem(&xfs_fs_type
);
1860 goto out_sysctl_unregister
;
1863 out_sysctl_unregister
:
1864 xfs_sysctl_unregister();
1866 xfs_cleanup_procfs();
1868 xfs_buf_terminate();
1869 out_filestream_uninit
:
1870 xfs_filestream_uninit();
1871 out_mru_cache_uninit
:
1872 xfs_mru_cache_uninit();
1873 out_free_trace_buffers
:
1874 xfs_free_trace_bufs();
1876 xfs_destroy_zones();
1885 unregister_filesystem(&xfs_fs_type
);
1886 xfs_sysctl_unregister();
1887 xfs_cleanup_procfs();
1888 xfs_buf_terminate();
1889 xfs_filestream_uninit();
1890 xfs_mru_cache_uninit();
1891 xfs_free_trace_bufs();
1892 xfs_destroy_zones();
1896 module_init(init_xfs_fs
);
1897 module_exit(exit_xfs_fs
);
1899 MODULE_AUTHOR("Silicon Graphics, Inc.");
1900 MODULE_DESCRIPTION(XFS_VERSION_STRING
" with " XFS_BUILD_OPTIONS
" enabled");
1901 MODULE_LICENSE("GPL");