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"
47 #include "xfs_buf_item.h"
48 #include "xfs_utils.h"
49 #include "xfs_vnodeops.h"
50 #include "xfs_version.h"
51 #include "xfs_log_priv.h"
52 #include "xfs_trans_priv.h"
53 #include "xfs_filestream.h"
54 #include "xfs_da_btree.h"
55 #include "xfs_dir2_trace.h"
56 #include "xfs_extfree_item.h"
57 #include "xfs_mru_cache.h"
58 #include "xfs_inode_item.h"
61 #include <linux/namei.h>
62 #include <linux/init.h>
63 #include <linux/mount.h>
64 #include <linux/mempool.h>
65 #include <linux/writeback.h>
66 #include <linux/kthread.h>
67 #include <linux/freezer.h>
68 #include <linux/parser.h>
70 static struct super_operations xfs_super_operations
;
71 static kmem_zone_t
*xfs_ioend_zone
;
72 mempool_t
*xfs_ioend_pool
;
74 #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
75 #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
76 #define MNTOPT_LOGDEV "logdev" /* log device */
77 #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
78 #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
79 #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
80 #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
81 #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */
82 #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
83 #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
84 #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
85 #define MNTOPT_MTPT "mtpt" /* filesystem mount point */
86 #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */
87 #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */
88 #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */
89 #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */
90 #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */
91 #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
92 #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
93 * unwritten extent conversion */
94 #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */
95 #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
96 #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
97 #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
98 #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
99 #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
100 #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes
102 #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
103 #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
104 #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */
105 #define MNTOPT_QUOTA "quota" /* disk quotas (user) */
106 #define MNTOPT_NOQUOTA "noquota" /* no quotas */
107 #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */
108 #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */
109 #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */
110 #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */
111 #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */
112 #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */
113 #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */
114 #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */
115 #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */
116 #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */
117 #define MNTOPT_DMAPI "dmapi" /* DMI enabled (DMAPI / XDSM) */
118 #define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */
119 #define MNTOPT_DMI "dmi" /* DMI enabled (DMAPI / XDSM) */
122 * Table driven mount option parser.
124 * Currently only used for remount, but it will be used for mount
125 * in the future, too.
128 Opt_barrier
, Opt_nobarrier
, Opt_err
131 static const match_table_t tokens
= {
132 {Opt_barrier
, "barrier"},
133 {Opt_nobarrier
, "nobarrier"},
139 suffix_strtoul(char *s
, char **endp
, unsigned int base
)
141 int last
, shift_left_factor
= 0;
144 last
= strlen(value
) - 1;
145 if (value
[last
] == 'K' || value
[last
] == 'k') {
146 shift_left_factor
= 10;
149 if (value
[last
] == 'M' || value
[last
] == 'm') {
150 shift_left_factor
= 20;
153 if (value
[last
] == 'G' || value
[last
] == 'g') {
154 shift_left_factor
= 30;
158 return simple_strtoul((const char *)s
, endp
, base
) << shift_left_factor
;
162 * This function fills in xfs_mount_t fields based on mount args.
163 * Note: the superblock has _not_ yet been read in.
165 * Note that this function leaks the various device name allocations on
166 * failure. The caller takes care of them.
170 struct xfs_mount
*mp
,
174 struct super_block
*sb
= mp
->m_super
;
175 char *this_char
, *value
, *eov
;
179 int dmapi_implies_ikeep
= 1;
180 __uint8_t iosizelog
= 0;
183 * Copy binary VFS mount flags we are interested in.
185 if (sb
->s_flags
& MS_RDONLY
)
186 mp
->m_flags
|= XFS_MOUNT_RDONLY
;
187 if (sb
->s_flags
& MS_DIRSYNC
)
188 mp
->m_flags
|= XFS_MOUNT_DIRSYNC
;
189 if (sb
->s_flags
& MS_SYNCHRONOUS
)
190 mp
->m_flags
|= XFS_MOUNT_WSYNC
;
193 * Set some default flags that could be cleared by the mount option
196 mp
->m_flags
|= XFS_MOUNT_BARRIER
;
197 mp
->m_flags
|= XFS_MOUNT_COMPAT_IOSIZE
;
198 mp
->m_flags
|= XFS_MOUNT_SMALL_INUMS
;
201 * These can be overridden by the mount option parsing.
209 while ((this_char
= strsep(&options
, ",")) != NULL
) {
212 if ((value
= strchr(this_char
, '=')) != NULL
)
215 if (!strcmp(this_char
, MNTOPT_LOGBUFS
)) {
216 if (!value
|| !*value
) {
218 "XFS: %s option requires an argument",
222 mp
->m_logbufs
= simple_strtoul(value
, &eov
, 10);
223 } else if (!strcmp(this_char
, MNTOPT_LOGBSIZE
)) {
224 if (!value
|| !*value
) {
226 "XFS: %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
) {
234 "XFS: %s option requires an argument",
238 mp
->m_logname
= kstrndup(value
, MAXNAMELEN
, GFP_KERNEL
);
241 } else if (!strcmp(this_char
, MNTOPT_MTPT
)) {
242 if (!value
|| !*value
) {
244 "XFS: %s option requires an argument",
248 *mtpt
= kstrndup(value
, MAXNAMELEN
, GFP_KERNEL
);
251 } else if (!strcmp(this_char
, MNTOPT_RTDEV
)) {
252 if (!value
|| !*value
) {
254 "XFS: %s option requires an argument",
258 mp
->m_rtname
= kstrndup(value
, MAXNAMELEN
, GFP_KERNEL
);
261 } else if (!strcmp(this_char
, MNTOPT_BIOSIZE
)) {
262 if (!value
|| !*value
) {
264 "XFS: %s option requires an argument",
268 iosize
= simple_strtoul(value
, &eov
, 10);
269 iosizelog
= ffs(iosize
) - 1;
270 } else if (!strcmp(this_char
, MNTOPT_ALLOCSIZE
)) {
271 if (!value
|| !*value
) {
273 "XFS: %s option requires an argument",
277 iosize
= suffix_strtoul(value
, &eov
, 10);
278 iosizelog
= ffs(iosize
) - 1;
279 } else if (!strcmp(this_char
, MNTOPT_GRPID
) ||
280 !strcmp(this_char
, MNTOPT_BSDGROUPS
)) {
281 mp
->m_flags
|= XFS_MOUNT_GRPID
;
282 } else if (!strcmp(this_char
, MNTOPT_NOGRPID
) ||
283 !strcmp(this_char
, MNTOPT_SYSVGROUPS
)) {
284 mp
->m_flags
&= ~XFS_MOUNT_GRPID
;
285 } else if (!strcmp(this_char
, MNTOPT_WSYNC
)) {
286 mp
->m_flags
|= XFS_MOUNT_WSYNC
;
287 } else if (!strcmp(this_char
, MNTOPT_OSYNCISOSYNC
)) {
288 mp
->m_flags
|= XFS_MOUNT_OSYNCISOSYNC
;
289 } else if (!strcmp(this_char
, MNTOPT_NORECOVERY
)) {
290 mp
->m_flags
|= XFS_MOUNT_NORECOVERY
;
291 } else if (!strcmp(this_char
, MNTOPT_NOALIGN
)) {
292 mp
->m_flags
|= XFS_MOUNT_NOALIGN
;
293 } else if (!strcmp(this_char
, MNTOPT_SWALLOC
)) {
294 mp
->m_flags
|= XFS_MOUNT_SWALLOC
;
295 } else if (!strcmp(this_char
, MNTOPT_SUNIT
)) {
296 if (!value
|| !*value
) {
298 "XFS: %s option requires an argument",
302 dsunit
= simple_strtoul(value
, &eov
, 10);
303 } else if (!strcmp(this_char
, MNTOPT_SWIDTH
)) {
304 if (!value
|| !*value
) {
306 "XFS: %s option requires an argument",
310 dswidth
= simple_strtoul(value
, &eov
, 10);
311 } else if (!strcmp(this_char
, MNTOPT_64BITINODE
)) {
312 mp
->m_flags
&= ~XFS_MOUNT_SMALL_INUMS
;
315 "XFS: %s option not allowed on this system",
319 } else if (!strcmp(this_char
, MNTOPT_NOUUID
)) {
320 mp
->m_flags
|= XFS_MOUNT_NOUUID
;
321 } else if (!strcmp(this_char
, MNTOPT_BARRIER
)) {
322 mp
->m_flags
|= XFS_MOUNT_BARRIER
;
323 } else if (!strcmp(this_char
, MNTOPT_NOBARRIER
)) {
324 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
325 } else if (!strcmp(this_char
, MNTOPT_IKEEP
)) {
326 mp
->m_flags
|= XFS_MOUNT_IKEEP
;
327 } else if (!strcmp(this_char
, MNTOPT_NOIKEEP
)) {
328 dmapi_implies_ikeep
= 0;
329 mp
->m_flags
&= ~XFS_MOUNT_IKEEP
;
330 } else if (!strcmp(this_char
, MNTOPT_LARGEIO
)) {
331 mp
->m_flags
&= ~XFS_MOUNT_COMPAT_IOSIZE
;
332 } else if (!strcmp(this_char
, MNTOPT_NOLARGEIO
)) {
333 mp
->m_flags
|= XFS_MOUNT_COMPAT_IOSIZE
;
334 } else if (!strcmp(this_char
, MNTOPT_ATTR2
)) {
335 mp
->m_flags
|= XFS_MOUNT_ATTR2
;
336 } else if (!strcmp(this_char
, MNTOPT_NOATTR2
)) {
337 mp
->m_flags
&= ~XFS_MOUNT_ATTR2
;
338 mp
->m_flags
|= XFS_MOUNT_NOATTR2
;
339 } else if (!strcmp(this_char
, MNTOPT_FILESTREAM
)) {
340 mp
->m_flags
|= XFS_MOUNT_FILESTREAMS
;
341 } else if (!strcmp(this_char
, MNTOPT_NOQUOTA
)) {
342 mp
->m_qflags
&= ~(XFS_UQUOTA_ACCT
| XFS_UQUOTA_ACTIVE
|
343 XFS_GQUOTA_ACCT
| XFS_GQUOTA_ACTIVE
|
344 XFS_PQUOTA_ACCT
| XFS_PQUOTA_ACTIVE
|
345 XFS_UQUOTA_ENFD
| XFS_OQUOTA_ENFD
);
346 } else if (!strcmp(this_char
, MNTOPT_QUOTA
) ||
347 !strcmp(this_char
, MNTOPT_UQUOTA
) ||
348 !strcmp(this_char
, MNTOPT_USRQUOTA
)) {
349 mp
->m_qflags
|= (XFS_UQUOTA_ACCT
| XFS_UQUOTA_ACTIVE
|
351 } else if (!strcmp(this_char
, MNTOPT_QUOTANOENF
) ||
352 !strcmp(this_char
, MNTOPT_UQUOTANOENF
)) {
353 mp
->m_qflags
|= (XFS_UQUOTA_ACCT
| XFS_UQUOTA_ACTIVE
);
354 mp
->m_qflags
&= ~XFS_UQUOTA_ENFD
;
355 } else if (!strcmp(this_char
, MNTOPT_PQUOTA
) ||
356 !strcmp(this_char
, MNTOPT_PRJQUOTA
)) {
357 mp
->m_qflags
|= (XFS_PQUOTA_ACCT
| XFS_PQUOTA_ACTIVE
|
359 } else if (!strcmp(this_char
, MNTOPT_PQUOTANOENF
)) {
360 mp
->m_qflags
|= (XFS_PQUOTA_ACCT
| XFS_PQUOTA_ACTIVE
);
361 mp
->m_qflags
&= ~XFS_OQUOTA_ENFD
;
362 } else if (!strcmp(this_char
, MNTOPT_GQUOTA
) ||
363 !strcmp(this_char
, MNTOPT_GRPQUOTA
)) {
364 mp
->m_qflags
|= (XFS_GQUOTA_ACCT
| XFS_GQUOTA_ACTIVE
|
366 } else if (!strcmp(this_char
, MNTOPT_GQUOTANOENF
)) {
367 mp
->m_qflags
|= (XFS_GQUOTA_ACCT
| XFS_GQUOTA_ACTIVE
);
368 mp
->m_qflags
&= ~XFS_OQUOTA_ENFD
;
369 } else if (!strcmp(this_char
, MNTOPT_DMAPI
)) {
370 mp
->m_flags
|= XFS_MOUNT_DMAPI
;
371 } else if (!strcmp(this_char
, MNTOPT_XDSM
)) {
372 mp
->m_flags
|= XFS_MOUNT_DMAPI
;
373 } else if (!strcmp(this_char
, MNTOPT_DMI
)) {
374 mp
->m_flags
|= XFS_MOUNT_DMAPI
;
375 } else if (!strcmp(this_char
, "ihashsize")) {
377 "XFS: ihashsize no longer used, option is deprecated.");
378 } else if (!strcmp(this_char
, "osyncisdsync")) {
379 /* no-op, this is now the default */
381 "XFS: osyncisdsync is now the default, option is deprecated.");
382 } else if (!strcmp(this_char
, "irixsgid")) {
384 "XFS: irixsgid is now a sysctl(2) variable, option is deprecated.");
387 "XFS: unknown mount option [%s].", this_char
);
393 * no recovery flag requires a read-only mount
395 if ((mp
->m_flags
& XFS_MOUNT_NORECOVERY
) &&
396 !(mp
->m_flags
& XFS_MOUNT_RDONLY
)) {
397 cmn_err(CE_WARN
, "XFS: no-recovery mounts must be read-only.");
401 if ((mp
->m_flags
& XFS_MOUNT_NOALIGN
) && (dsunit
|| dswidth
)) {
403 "XFS: sunit and swidth options incompatible with the noalign option");
407 #ifndef CONFIG_XFS_QUOTA
408 if (XFS_IS_QUOTA_RUNNING(mp
)) {
410 "XFS: quota support not available in this kernel.");
415 if ((mp
->m_qflags
& (XFS_GQUOTA_ACCT
| XFS_GQUOTA_ACTIVE
)) &&
416 (mp
->m_qflags
& (XFS_PQUOTA_ACCT
| XFS_PQUOTA_ACTIVE
))) {
418 "XFS: cannot mount with both project and group quota");
422 if ((mp
->m_flags
& XFS_MOUNT_DMAPI
) && (!*mtpt
|| *mtpt
[0] == '\0')) {
423 printk("XFS: %s option needs the mount point option as well\n",
428 if ((dsunit
&& !dswidth
) || (!dsunit
&& dswidth
)) {
430 "XFS: sunit and swidth must be specified together");
434 if (dsunit
&& (dswidth
% dsunit
!= 0)) {
436 "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)",
442 * Applications using DMI filesystems often expect the
443 * inode generation number to be monotonically increasing.
444 * If we delete inode chunks we break this assumption, so
445 * keep unused inode chunks on disk for DMI filesystems
446 * until we come up with a better solution.
447 * Note that if "ikeep" or "noikeep" mount options are
448 * supplied, then they are honored.
450 if ((mp
->m_flags
& XFS_MOUNT_DMAPI
) && dmapi_implies_ikeep
)
451 mp
->m_flags
|= XFS_MOUNT_IKEEP
;
454 if (!(mp
->m_flags
& XFS_MOUNT_NOALIGN
)) {
456 * At this point the superblock has not been read
457 * in, therefore we do not know the block size.
458 * Before the mount call ends we will convert
462 mp
->m_dalign
= dsunit
;
463 mp
->m_flags
|= XFS_MOUNT_RETERR
;
467 mp
->m_swidth
= dswidth
;
470 if (mp
->m_logbufs
!= -1 &&
471 mp
->m_logbufs
!= 0 &&
472 (mp
->m_logbufs
< XLOG_MIN_ICLOGS
||
473 mp
->m_logbufs
> XLOG_MAX_ICLOGS
)) {
475 "XFS: invalid logbufs value: %d [not %d-%d]",
476 mp
->m_logbufs
, XLOG_MIN_ICLOGS
, XLOG_MAX_ICLOGS
);
477 return XFS_ERROR(EINVAL
);
479 if (mp
->m_logbsize
!= -1 &&
480 mp
->m_logbsize
!= 0 &&
481 (mp
->m_logbsize
< XLOG_MIN_RECORD_BSIZE
||
482 mp
->m_logbsize
> XLOG_MAX_RECORD_BSIZE
||
483 !is_power_of_2(mp
->m_logbsize
))) {
485 "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
487 return XFS_ERROR(EINVAL
);
490 mp
->m_fsname
= kstrndup(sb
->s_id
, MAXNAMELEN
, GFP_KERNEL
);
493 mp
->m_fsname_len
= strlen(mp
->m_fsname
) + 1;
496 if (iosizelog
> XFS_MAX_IO_LOG
||
497 iosizelog
< XFS_MIN_IO_LOG
) {
499 "XFS: invalid log iosize: %d [not %d-%d]",
500 iosizelog
, XFS_MIN_IO_LOG
,
502 return XFS_ERROR(EINVAL
);
505 mp
->m_flags
|= XFS_MOUNT_DFLT_IOSIZE
;
506 mp
->m_readio_log
= iosizelog
;
507 mp
->m_writeio_log
= iosizelog
;
513 struct proc_xfs_info
{
520 struct xfs_mount
*mp
,
523 static struct proc_xfs_info xfs_info_set
[] = {
524 /* the few simple ones we can get from the mount struct */
525 { XFS_MOUNT_IKEEP
, "," MNTOPT_IKEEP
},
526 { XFS_MOUNT_WSYNC
, "," MNTOPT_WSYNC
},
527 { XFS_MOUNT_NOALIGN
, "," MNTOPT_NOALIGN
},
528 { XFS_MOUNT_SWALLOC
, "," MNTOPT_SWALLOC
},
529 { XFS_MOUNT_NOUUID
, "," MNTOPT_NOUUID
},
530 { XFS_MOUNT_NORECOVERY
, "," MNTOPT_NORECOVERY
},
531 { XFS_MOUNT_OSYNCISOSYNC
, "," MNTOPT_OSYNCISOSYNC
},
532 { XFS_MOUNT_ATTR2
, "," MNTOPT_ATTR2
},
533 { XFS_MOUNT_FILESTREAMS
, "," MNTOPT_FILESTREAM
},
534 { XFS_MOUNT_DMAPI
, "," MNTOPT_DMAPI
},
535 { XFS_MOUNT_GRPID
, "," MNTOPT_GRPID
},
538 static struct proc_xfs_info xfs_info_unset
[] = {
539 /* the few simple ones we can get from the mount struct */
540 { XFS_MOUNT_COMPAT_IOSIZE
, "," MNTOPT_LARGEIO
},
541 { XFS_MOUNT_BARRIER
, "," MNTOPT_NOBARRIER
},
542 { XFS_MOUNT_SMALL_INUMS
, "," MNTOPT_64BITINODE
},
545 struct proc_xfs_info
*xfs_infop
;
547 for (xfs_infop
= xfs_info_set
; xfs_infop
->flag
; xfs_infop
++) {
548 if (mp
->m_flags
& xfs_infop
->flag
)
549 seq_puts(m
, xfs_infop
->str
);
551 for (xfs_infop
= xfs_info_unset
; xfs_infop
->flag
; xfs_infop
++) {
552 if (!(mp
->m_flags
& xfs_infop
->flag
))
553 seq_puts(m
, xfs_infop
->str
);
556 if (mp
->m_flags
& XFS_MOUNT_DFLT_IOSIZE
)
557 seq_printf(m
, "," MNTOPT_ALLOCSIZE
"=%dk",
558 (int)(1 << mp
->m_writeio_log
) >> 10);
560 if (mp
->m_logbufs
> 0)
561 seq_printf(m
, "," MNTOPT_LOGBUFS
"=%d", mp
->m_logbufs
);
562 if (mp
->m_logbsize
> 0)
563 seq_printf(m
, "," MNTOPT_LOGBSIZE
"=%dk", mp
->m_logbsize
>> 10);
566 seq_printf(m
, "," MNTOPT_LOGDEV
"=%s", mp
->m_logname
);
568 seq_printf(m
, "," MNTOPT_RTDEV
"=%s", mp
->m_rtname
);
570 if (mp
->m_dalign
> 0)
571 seq_printf(m
, "," MNTOPT_SUNIT
"=%d",
572 (int)XFS_FSB_TO_BB(mp
, mp
->m_dalign
));
573 if (mp
->m_swidth
> 0)
574 seq_printf(m
, "," MNTOPT_SWIDTH
"=%d",
575 (int)XFS_FSB_TO_BB(mp
, mp
->m_swidth
));
577 if (mp
->m_qflags
& (XFS_UQUOTA_ACCT
|XFS_UQUOTA_ENFD
))
578 seq_puts(m
, "," MNTOPT_USRQUOTA
);
579 else if (mp
->m_qflags
& XFS_UQUOTA_ACCT
)
580 seq_puts(m
, "," MNTOPT_UQUOTANOENF
);
582 if (mp
->m_qflags
& (XFS_PQUOTA_ACCT
|XFS_OQUOTA_ENFD
))
583 seq_puts(m
, "," MNTOPT_PRJQUOTA
);
584 else if (mp
->m_qflags
& XFS_PQUOTA_ACCT
)
585 seq_puts(m
, "," MNTOPT_PQUOTANOENF
);
587 if (mp
->m_qflags
& (XFS_GQUOTA_ACCT
|XFS_OQUOTA_ENFD
))
588 seq_puts(m
, "," MNTOPT_GRPQUOTA
);
589 else if (mp
->m_qflags
& XFS_GQUOTA_ACCT
)
590 seq_puts(m
, "," MNTOPT_GQUOTANOENF
);
592 if (!(mp
->m_qflags
& XFS_ALL_QUOTA_ACCT
))
593 seq_puts(m
, "," MNTOPT_NOQUOTA
);
599 unsigned int blockshift
)
601 unsigned int pagefactor
= 1;
602 unsigned int bitshift
= BITS_PER_LONG
- 1;
604 /* Figure out maximum filesize, on Linux this can depend on
605 * the filesystem blocksize (on 32 bit platforms).
606 * __block_prepare_write does this in an [unsigned] long...
607 * page->index << (PAGE_CACHE_SHIFT - bbits)
608 * So, for page sized blocks (4K on 32 bit platforms),
609 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
610 * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
611 * but for smaller blocksizes it is less (bbits = log2 bsize).
612 * Note1: get_block_t takes a long (implicit cast from above)
613 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
614 * can optionally convert the [unsigned] long from above into
615 * an [unsigned] long long.
618 #if BITS_PER_LONG == 32
619 # if defined(CONFIG_LBD)
620 ASSERT(sizeof(sector_t
) == 8);
621 pagefactor
= PAGE_CACHE_SIZE
;
622 bitshift
= BITS_PER_LONG
;
624 pagefactor
= PAGE_CACHE_SIZE
>> (PAGE_CACHE_SHIFT
- blockshift
);
628 return (((__uint64_t
)pagefactor
) << bitshift
) - 1;
635 struct block_device
**bdevp
)
639 *bdevp
= open_bdev_exclusive(name
, FMODE_READ
|FMODE_WRITE
, mp
);
640 if (IS_ERR(*bdevp
)) {
641 error
= PTR_ERR(*bdevp
);
642 printk("XFS: Invalid device [%s], error=%d\n", name
, error
);
650 struct block_device
*bdev
)
653 close_bdev_exclusive(bdev
, FMODE_READ
|FMODE_WRITE
);
657 * Try to write out the superblock using barriers.
663 xfs_buf_t
*sbp
= xfs_getsb(mp
, 0);
668 XFS_BUF_UNDELAYWRITE(sbp
);
670 XFS_BUF_UNASYNC(sbp
);
671 XFS_BUF_ORDERED(sbp
);
674 error
= xfs_iowait(sbp
);
677 * Clear all the flags we set and possible error state in the
678 * buffer. We only did the write to try out whether barriers
679 * worked and shouldn't leave any traces in the superblock
683 XFS_BUF_ERROR(sbp
, 0);
684 XFS_BUF_UNORDERED(sbp
);
691 xfs_mountfs_check_barriers(xfs_mount_t
*mp
)
695 if (mp
->m_logdev_targp
!= mp
->m_ddev_targp
) {
696 xfs_fs_cmn_err(CE_NOTE
, mp
,
697 "Disabling barriers, not supported with external log device");
698 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
702 if (xfs_readonly_buftarg(mp
->m_ddev_targp
)) {
703 xfs_fs_cmn_err(CE_NOTE
, mp
,
704 "Disabling barriers, underlying device is readonly");
705 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
709 error
= xfs_barrier_test(mp
);
711 xfs_fs_cmn_err(CE_NOTE
, mp
,
712 "Disabling barriers, trial barrier write failed");
713 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
719 xfs_blkdev_issue_flush(
720 xfs_buftarg_t
*buftarg
)
722 blkdev_issue_flush(buftarg
->bt_bdev
, NULL
);
727 struct xfs_mount
*mp
)
729 if (mp
->m_logdev_targp
&& mp
->m_logdev_targp
!= mp
->m_ddev_targp
) {
730 struct block_device
*logdev
= mp
->m_logdev_targp
->bt_bdev
;
731 xfs_free_buftarg(mp
, mp
->m_logdev_targp
);
732 xfs_blkdev_put(logdev
);
734 if (mp
->m_rtdev_targp
) {
735 struct block_device
*rtdev
= mp
->m_rtdev_targp
->bt_bdev
;
736 xfs_free_buftarg(mp
, mp
->m_rtdev_targp
);
737 xfs_blkdev_put(rtdev
);
739 xfs_free_buftarg(mp
, mp
->m_ddev_targp
);
743 * The file system configurations are:
744 * (1) device (partition) with data and internal log
745 * (2) logical volume with data and log subvolumes.
746 * (3) logical volume with data, log, and realtime subvolumes.
748 * We only have to handle opening the log and realtime volumes here if
749 * they are present. The data subvolume has already been opened by
750 * get_sb_bdev() and is stored in sb->s_bdev.
754 struct xfs_mount
*mp
)
756 struct block_device
*ddev
= mp
->m_super
->s_bdev
;
757 struct block_device
*logdev
= NULL
, *rtdev
= NULL
;
761 * Open real time and log devices - order is important.
764 error
= xfs_blkdev_get(mp
, mp
->m_logname
, &logdev
);
770 error
= xfs_blkdev_get(mp
, mp
->m_rtname
, &rtdev
);
772 goto out_close_logdev
;
774 if (rtdev
== ddev
|| rtdev
== logdev
) {
776 "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
778 goto out_close_rtdev
;
783 * Setup xfs_mount buffer target pointers
786 mp
->m_ddev_targp
= xfs_alloc_buftarg(ddev
, 0);
787 if (!mp
->m_ddev_targp
)
788 goto out_close_rtdev
;
791 mp
->m_rtdev_targp
= xfs_alloc_buftarg(rtdev
, 1);
792 if (!mp
->m_rtdev_targp
)
793 goto out_free_ddev_targ
;
796 if (logdev
&& logdev
!= ddev
) {
797 mp
->m_logdev_targp
= xfs_alloc_buftarg(logdev
, 1);
798 if (!mp
->m_logdev_targp
)
799 goto out_free_rtdev_targ
;
801 mp
->m_logdev_targp
= mp
->m_ddev_targp
;
807 if (mp
->m_rtdev_targp
)
808 xfs_free_buftarg(mp
, mp
->m_rtdev_targp
);
810 xfs_free_buftarg(mp
, mp
->m_ddev_targp
);
813 xfs_blkdev_put(rtdev
);
815 if (logdev
&& logdev
!= ddev
)
816 xfs_blkdev_put(logdev
);
822 * Setup xfs_mount buffer target pointers based on superblock
826 struct xfs_mount
*mp
)
830 error
= xfs_setsize_buftarg(mp
->m_ddev_targp
, mp
->m_sb
.sb_blocksize
,
831 mp
->m_sb
.sb_sectsize
);
835 if (mp
->m_logdev_targp
&& mp
->m_logdev_targp
!= mp
->m_ddev_targp
) {
836 unsigned int log_sector_size
= BBSIZE
;
838 if (xfs_sb_version_hassector(&mp
->m_sb
))
839 log_sector_size
= mp
->m_sb
.sb_logsectsize
;
840 error
= xfs_setsize_buftarg(mp
->m_logdev_targp
,
841 mp
->m_sb
.sb_blocksize
,
846 if (mp
->m_rtdev_targp
) {
847 error
= xfs_setsize_buftarg(mp
->m_rtdev_targp
,
848 mp
->m_sb
.sb_blocksize
,
849 mp
->m_sb
.sb_sectsize
);
858 * XFS AIL push thread support
862 struct xfs_ail
*ailp
,
863 xfs_lsn_t threshold_lsn
)
865 ailp
->xa_target
= threshold_lsn
;
866 wake_up_process(ailp
->xa_task
);
873 struct xfs_ail
*ailp
= data
;
874 xfs_lsn_t last_pushed_lsn
= 0;
877 while (!kthread_should_stop()) {
879 schedule_timeout_interruptible(msecs_to_jiffies(tout
));
885 ASSERT(ailp
->xa_mount
->m_log
);
886 if (XFS_FORCED_SHUTDOWN(ailp
->xa_mount
))
889 tout
= xfsaild_push(ailp
, &last_pushed_lsn
);
897 struct xfs_ail
*ailp
)
900 ailp
->xa_task
= kthread_run(xfsaild
, ailp
, "xfsaild");
901 if (IS_ERR(ailp
->xa_task
))
902 return -PTR_ERR(ailp
->xa_task
);
908 struct xfs_ail
*ailp
)
910 kthread_stop(ailp
->xa_task
);
914 /* Catch misguided souls that try to use this interface on XFS */
915 STATIC
struct inode
*
917 struct super_block
*sb
)
924 * Now that the generic code is guaranteed not to be accessing
925 * the linux inode, we can reclaim the inode.
928 xfs_fs_destroy_inode(
931 xfs_inode_t
*ip
= XFS_I(inode
);
933 XFS_STATS_INC(vn_reclaim
);
935 panic("%s: cannot reclaim 0x%p\n", __func__
, inode
);
939 * Slab object creation initialisation for the XFS inode.
940 * This covers only the idempotent fields in the XFS inode;
941 * all other fields need to be initialised on allocation
942 * from the slab. This avoids the need to repeatedly intialise
943 * fields in the xfs inode that left in the initialise state
944 * when freeing the inode.
947 xfs_fs_inode_init_once(
950 struct xfs_inode
*ip
= inode
;
952 memset(ip
, 0, sizeof(struct xfs_inode
));
955 inode_init_once(VFS_I(ip
));
958 atomic_set(&ip
->i_iocount
, 0);
959 atomic_set(&ip
->i_pincount
, 0);
960 spin_lock_init(&ip
->i_flags_lock
);
961 init_waitqueue_head(&ip
->i_ipin_wait
);
963 * Because we want to use a counting completion, complete
964 * the flush completion once to allow a single access to
965 * the flush completion without blocking.
967 init_completion(&ip
->i_flush
);
968 complete(&ip
->i_flush
);
970 mrlock_init(&ip
->i_lock
, MRLOCK_ALLOW_EQUAL_PRI
|MRLOCK_BARRIER
,
971 "xfsino", ip
->i_ino
);
972 mrlock_init(&ip
->i_iolock
, MRLOCK_BARRIER
, "xfsio", ip
->i_ino
);
976 * Attempt to flush the inode, this will actually fail
977 * if the inode is pinned, but we dirty the inode again
978 * at the point when it is unpinned after a log write,
979 * since this is when the inode itself becomes flushable.
986 struct xfs_inode
*ip
= XFS_I(inode
);
987 struct xfs_mount
*mp
= ip
->i_mount
;
990 xfs_itrace_entry(ip
);
992 if (XFS_FORCED_SHUTDOWN(mp
))
993 return XFS_ERROR(EIO
);
996 error
= xfs_wait_on_pages(ip
, 0, -1);
1002 * Bypass inodes which have already been cleaned by
1003 * the inode flush clustering code inside xfs_iflush
1005 if (xfs_inode_clean(ip
))
1009 * We make this non-blocking if the inode is contended, return
1010 * EAGAIN to indicate to the caller that they did not succeed.
1011 * This prevents the flush path from blocking on inodes inside
1012 * another operation right now, they get caught later by xfs_sync.
1015 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
1018 error
= xfs_iflush(ip
, XFS_IFLUSH_SYNC
);
1021 if (!xfs_ilock_nowait(ip
, XFS_ILOCK_SHARED
))
1023 if (xfs_ipincount(ip
) || !xfs_iflock_nowait(ip
))
1026 error
= xfs_iflush(ip
, XFS_IFLUSH_ASYNC_NOBLOCK
);
1030 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
1033 * if we failed to write out the inode then mark
1034 * it dirty again so we'll try again later.
1037 xfs_mark_inode_dirty_sync(ip
);
1043 struct inode
*inode
)
1045 xfs_inode_t
*ip
= XFS_I(inode
);
1047 xfs_itrace_entry(ip
);
1048 XFS_STATS_INC(vn_rele
);
1049 XFS_STATS_INC(vn_remove
);
1050 XFS_STATS_DEC(vn_active
);
1057 struct xfs_mount
*mp
)
1059 kfree(mp
->m_fsname
);
1060 kfree(mp
->m_rtname
);
1061 kfree(mp
->m_logname
);
1066 struct super_block
*sb
)
1068 struct xfs_mount
*mp
= XFS_M(sb
);
1069 struct xfs_inode
*rip
= mp
->m_rootip
;
1070 int unmount_event_flags
= 0;
1074 if (!(sb
->s_flags
& MS_RDONLY
)) {
1076 * XXX(hch): this should be SYNC_WAIT.
1078 * Or more likely not needed at all because the VFS is already
1079 * calling ->sync_fs after shutting down all filestem
1080 * operations and just before calling ->put_super.
1082 xfs_sync_data(mp
, 0);
1083 xfs_sync_attr(mp
, 0);
1087 if (mp
->m_flags
& XFS_MOUNT_DMAPI
) {
1088 unmount_event_flags
=
1089 (mp
->m_dmevmask
& (1 << DM_EVENT_UNMOUNT
)) ?
1090 0 : DM_FLAGS_UNWANTED
;
1092 * Ignore error from dmapi here, first unmount is not allowed
1093 * to fail anyway, and second we wouldn't want to fail a
1094 * unmount because of dmapi.
1096 XFS_SEND_PREUNMOUNT(mp
, rip
, DM_RIGHT_NULL
, rip
, DM_RIGHT_NULL
,
1097 NULL
, NULL
, 0, 0, unmount_event_flags
);
1102 * Blow away any referenced inode in the filestreams cache.
1103 * This can and will cause log traffic as inodes go inactive
1106 xfs_filestream_unmount(mp
);
1108 XFS_bflush(mp
->m_ddev_targp
);
1110 if (mp
->m_flags
& XFS_MOUNT_DMAPI
) {
1111 XFS_SEND_UNMOUNT(mp
, rip
, DM_RIGHT_NULL
, 0, 0,
1112 unmount_event_flags
);
1117 xfs_icsb_destroy_counters(mp
);
1118 xfs_close_devices(mp
);
1120 xfs_free_fsname(mp
);
1126 struct super_block
*sb
)
1128 if (!(sb
->s_flags
& MS_RDONLY
))
1129 xfs_sync_fsdata(XFS_M(sb
), 0);
1135 struct super_block
*sb
,
1138 struct xfs_mount
*mp
= XFS_M(sb
);
1142 * Treat a sync operation like a freeze. This is to work
1143 * around a race in sync_inodes() which works in two phases
1144 * - an asynchronous flush, which can write out an inode
1145 * without waiting for file size updates to complete, and a
1146 * synchronous flush, which wont do anything because the
1147 * async flush removed the inode's dirty flag. Also
1148 * sync_inodes() will not see any files that just have
1149 * outstanding transactions to be flushed because we don't
1150 * dirty the Linux inode until after the transaction I/O
1153 if (wait
|| unlikely(sb
->s_frozen
== SB_FREEZE_WRITE
))
1154 error
= xfs_quiesce_data(mp
);
1156 error
= xfs_sync_fsdata(mp
, 0);
1159 if (unlikely(laptop_mode
)) {
1160 int prev_sync_seq
= mp
->m_sync_seq
;
1163 * The disk must be active because we're syncing.
1164 * We schedule xfssyncd now (now that the disk is
1165 * active) instead of later (when it might not be).
1167 wake_up_process(mp
->m_sync_task
);
1169 * We have to wait for the sync iteration to complete.
1170 * If we don't, the disk activity caused by the sync
1171 * will come after the sync is completed, and that
1172 * triggers another sync from laptop mode.
1174 wait_event(mp
->m_wait_single_sync_task
,
1175 mp
->m_sync_seq
!= prev_sync_seq
);
1183 struct dentry
*dentry
,
1184 struct kstatfs
*statp
)
1186 struct xfs_mount
*mp
= XFS_M(dentry
->d_sb
);
1187 xfs_sb_t
*sbp
= &mp
->m_sb
;
1188 struct xfs_inode
*ip
= XFS_I(dentry
->d_inode
);
1189 __uint64_t fakeinos
, id
;
1192 statp
->f_type
= XFS_SB_MAGIC
;
1193 statp
->f_namelen
= MAXNAMELEN
- 1;
1195 id
= huge_encode_dev(mp
->m_ddev_targp
->bt_dev
);
1196 statp
->f_fsid
.val
[0] = (u32
)id
;
1197 statp
->f_fsid
.val
[1] = (u32
)(id
>> 32);
1199 xfs_icsb_sync_counters(mp
, XFS_ICSB_LAZY_COUNT
);
1201 spin_lock(&mp
->m_sb_lock
);
1202 statp
->f_bsize
= sbp
->sb_blocksize
;
1203 lsize
= sbp
->sb_logstart
? sbp
->sb_logblocks
: 0;
1204 statp
->f_blocks
= sbp
->sb_dblocks
- lsize
;
1205 statp
->f_bfree
= statp
->f_bavail
=
1206 sbp
->sb_fdblocks
- XFS_ALLOC_SET_ASIDE(mp
);
1207 fakeinos
= statp
->f_bfree
<< sbp
->sb_inopblog
;
1209 MIN(sbp
->sb_icount
+ fakeinos
, (__uint64_t
)XFS_MAXINUMBER
);
1210 if (mp
->m_maxicount
)
1211 statp
->f_files
= min_t(typeof(statp
->f_files
),
1214 statp
->f_ffree
= statp
->f_files
- (sbp
->sb_icount
- sbp
->sb_ifree
);
1215 spin_unlock(&mp
->m_sb_lock
);
1217 if ((ip
->i_d
.di_flags
& XFS_DIFLAG_PROJINHERIT
) ||
1218 ((mp
->m_qflags
& (XFS_PQUOTA_ACCT
|XFS_OQUOTA_ENFD
))) ==
1219 (XFS_PQUOTA_ACCT
|XFS_OQUOTA_ENFD
))
1220 xfs_qm_statvfs(ip
, statp
);
1226 struct super_block
*sb
,
1230 struct xfs_mount
*mp
= XFS_M(sb
);
1231 substring_t args
[MAX_OPT_ARGS
];
1235 while ((p
= strsep(&options
, ",")) != NULL
) {
1241 token
= match_token(p
, tokens
, args
);
1244 mp
->m_flags
|= XFS_MOUNT_BARRIER
;
1247 * Test if barriers are actually working if we can,
1248 * else delay this check until the filesystem is
1251 if (!(mp
->m_flags
& XFS_MOUNT_RDONLY
))
1252 xfs_mountfs_check_barriers(mp
);
1255 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
1259 * Logically we would return an error here to prevent
1260 * users from believing they might have changed
1261 * mount options using remount which can't be changed.
1263 * But unfortunately mount(8) adds all options from
1264 * mtab and fstab to the mount arguments in some cases
1265 * so we can't blindly reject options, but have to
1266 * check for each specified option if it actually
1267 * differs from the currently set option and only
1268 * reject it if that's the case.
1270 * Until that is implemented we return success for
1271 * every remount request, and silently ignore all
1272 * options that we can't actually change.
1276 "XFS: mount option \"%s\" not supported for remount\n", p
);
1285 if ((mp
->m_flags
& XFS_MOUNT_RDONLY
) && !(*flags
& MS_RDONLY
)) {
1286 mp
->m_flags
&= ~XFS_MOUNT_RDONLY
;
1287 if (mp
->m_flags
& XFS_MOUNT_BARRIER
)
1288 xfs_mountfs_check_barriers(mp
);
1291 * If this is the first remount to writeable state we
1292 * might have some superblock changes to update.
1294 if (mp
->m_update_flags
) {
1295 error
= xfs_mount_log_sb(mp
, mp
->m_update_flags
);
1298 "XFS: failed to write sb changes");
1301 mp
->m_update_flags
= 0;
1306 if (!(mp
->m_flags
& XFS_MOUNT_RDONLY
) && (*flags
& MS_RDONLY
)) {
1307 xfs_quiesce_data(mp
);
1308 xfs_quiesce_attr(mp
);
1309 mp
->m_flags
|= XFS_MOUNT_RDONLY
;
1316 * Second stage of a freeze. The data is already frozen so we only
1317 * need to take care of the metadata. Once that's done write a dummy
1318 * record to dirty the log in case of a crash while frozen.
1322 struct super_block
*sb
)
1324 struct xfs_mount
*mp
= XFS_M(sb
);
1326 xfs_quiesce_attr(mp
);
1327 return -xfs_fs_log_dummy(mp
);
1331 xfs_fs_show_options(
1333 struct vfsmount
*mnt
)
1335 return -xfs_showargs(XFS_M(mnt
->mnt_sb
), m
);
1339 * This function fills in xfs_mount_t fields based on mount args.
1340 * Note: the superblock _has_ now been read in.
1344 struct xfs_mount
*mp
)
1346 int ronly
= (mp
->m_flags
& XFS_MOUNT_RDONLY
);
1348 /* Fail a mount where the logbuf is smaller than the log stripe */
1349 if (xfs_sb_version_haslogv2(&mp
->m_sb
)) {
1350 if (mp
->m_logbsize
<= 0 &&
1351 mp
->m_sb
.sb_logsunit
> XLOG_BIG_RECORD_BSIZE
) {
1352 mp
->m_logbsize
= mp
->m_sb
.sb_logsunit
;
1353 } else if (mp
->m_logbsize
> 0 &&
1354 mp
->m_logbsize
< mp
->m_sb
.sb_logsunit
) {
1356 "XFS: logbuf size must be greater than or equal to log stripe size");
1357 return XFS_ERROR(EINVAL
);
1360 /* Fail a mount if the logbuf is larger than 32K */
1361 if (mp
->m_logbsize
> XLOG_BIG_RECORD_BSIZE
) {
1363 "XFS: logbuf size for version 1 logs must be 16K or 32K");
1364 return XFS_ERROR(EINVAL
);
1369 * mkfs'ed attr2 will turn on attr2 mount unless explicitly
1370 * told by noattr2 to turn it off
1372 if (xfs_sb_version_hasattr2(&mp
->m_sb
) &&
1373 !(mp
->m_flags
& XFS_MOUNT_NOATTR2
))
1374 mp
->m_flags
|= XFS_MOUNT_ATTR2
;
1377 * prohibit r/w mounts of read-only filesystems
1379 if ((mp
->m_sb
.sb_flags
& XFS_SBF_READONLY
) && !ronly
) {
1381 "XFS: cannot mount a read-only filesystem as read-write");
1382 return XFS_ERROR(EROFS
);
1390 struct super_block
*sb
,
1395 struct xfs_mount
*mp
= NULL
;
1396 int flags
= 0, error
= ENOMEM
;
1399 mp
= kzalloc(sizeof(struct xfs_mount
), GFP_KERNEL
);
1403 spin_lock_init(&mp
->m_sb_lock
);
1404 mutex_init(&mp
->m_growlock
);
1405 atomic_set(&mp
->m_active_trans
, 0);
1406 INIT_LIST_HEAD(&mp
->m_sync_list
);
1407 spin_lock_init(&mp
->m_sync_lock
);
1408 init_waitqueue_head(&mp
->m_wait_single_sync_task
);
1413 error
= xfs_parseargs(mp
, (char *)data
, &mtpt
);
1415 goto out_free_fsname
;
1417 sb_min_blocksize(sb
, BBSIZE
);
1418 sb
->s_xattr
= xfs_xattr_handlers
;
1419 sb
->s_export_op
= &xfs_export_operations
;
1420 #ifdef CONFIG_XFS_QUOTA
1421 sb
->s_qcop
= &xfs_quotactl_operations
;
1423 sb
->s_op
= &xfs_super_operations
;
1425 error
= xfs_dmops_get(mp
);
1427 goto out_free_fsname
;
1430 flags
|= XFS_MFSI_QUIET
;
1432 error
= xfs_open_devices(mp
);
1436 if (xfs_icsb_init_counters(mp
))
1437 mp
->m_flags
|= XFS_MOUNT_NO_PERCPU_SB
;
1439 error
= xfs_readsb(mp
, flags
);
1441 goto out_destroy_counters
;
1443 error
= xfs_finish_flags(mp
);
1447 error
= xfs_setup_devices(mp
);
1451 if (mp
->m_flags
& XFS_MOUNT_BARRIER
)
1452 xfs_mountfs_check_barriers(mp
);
1454 error
= xfs_filestream_mount(mp
);
1458 error
= xfs_mountfs(mp
);
1460 goto out_filestream_unmount
;
1462 XFS_SEND_MOUNT(mp
, DM_RIGHT_NULL
, mtpt
, mp
->m_fsname
);
1465 sb
->s_magic
= XFS_SB_MAGIC
;
1466 sb
->s_blocksize
= mp
->m_sb
.sb_blocksize
;
1467 sb
->s_blocksize_bits
= ffs(sb
->s_blocksize
) - 1;
1468 sb
->s_maxbytes
= xfs_max_file_offset(sb
->s_blocksize_bits
);
1469 sb
->s_time_gran
= 1;
1470 set_posix_acl_flag(sb
);
1472 root
= igrab(VFS_I(mp
->m_rootip
));
1477 if (is_bad_inode(root
)) {
1481 sb
->s_root
= d_alloc_root(root
);
1487 error
= xfs_syncd_init(mp
);
1493 xfs_itrace_exit(XFS_I(sb
->s_root
->d_inode
));
1496 out_filestream_unmount
:
1497 xfs_filestream_unmount(mp
);
1500 out_destroy_counters
:
1501 xfs_icsb_destroy_counters(mp
);
1502 xfs_close_devices(mp
);
1506 xfs_free_fsname(mp
);
1522 * Blow away any referenced inode in the filestreams cache.
1523 * This can and will cause log traffic as inodes go inactive
1526 xfs_filestream_unmount(mp
);
1528 XFS_bflush(mp
->m_ddev_targp
);
1536 struct file_system_type
*fs_type
,
1538 const char *dev_name
,
1540 struct vfsmount
*mnt
)
1542 return get_sb_bdev(fs_type
, flags
, dev_name
, data
, xfs_fs_fill_super
,
1546 static struct super_operations xfs_super_operations
= {
1547 .alloc_inode
= xfs_fs_alloc_inode
,
1548 .destroy_inode
= xfs_fs_destroy_inode
,
1549 .write_inode
= xfs_fs_write_inode
,
1550 .clear_inode
= xfs_fs_clear_inode
,
1551 .put_super
= xfs_fs_put_super
,
1552 .write_super
= xfs_fs_write_super
,
1553 .sync_fs
= xfs_fs_sync_super
,
1554 .freeze_fs
= xfs_fs_freeze
,
1555 .statfs
= xfs_fs_statfs
,
1556 .remount_fs
= xfs_fs_remount
,
1557 .show_options
= xfs_fs_show_options
,
1560 static struct file_system_type xfs_fs_type
= {
1561 .owner
= THIS_MODULE
,
1563 .get_sb
= xfs_fs_get_sb
,
1564 .kill_sb
= kill_block_super
,
1565 .fs_flags
= FS_REQUIRES_DEV
,
1569 xfs_alloc_trace_bufs(void)
1571 #ifdef XFS_ALLOC_TRACE
1572 xfs_alloc_trace_buf
= ktrace_alloc(XFS_ALLOC_TRACE_SIZE
, KM_MAYFAIL
);
1573 if (!xfs_alloc_trace_buf
)
1576 #ifdef XFS_BMAP_TRACE
1577 xfs_bmap_trace_buf
= ktrace_alloc(XFS_BMAP_TRACE_SIZE
, KM_MAYFAIL
);
1578 if (!xfs_bmap_trace_buf
)
1579 goto out_free_alloc_trace
;
1581 #ifdef XFS_BTREE_TRACE
1582 xfs_allocbt_trace_buf
= ktrace_alloc(XFS_ALLOCBT_TRACE_SIZE
,
1584 if (!xfs_allocbt_trace_buf
)
1585 goto out_free_bmap_trace
;
1587 xfs_inobt_trace_buf
= ktrace_alloc(XFS_INOBT_TRACE_SIZE
, KM_MAYFAIL
);
1588 if (!xfs_inobt_trace_buf
)
1589 goto out_free_allocbt_trace
;
1591 xfs_bmbt_trace_buf
= ktrace_alloc(XFS_BMBT_TRACE_SIZE
, KM_MAYFAIL
);
1592 if (!xfs_bmbt_trace_buf
)
1593 goto out_free_inobt_trace
;
1595 #ifdef XFS_ATTR_TRACE
1596 xfs_attr_trace_buf
= ktrace_alloc(XFS_ATTR_TRACE_SIZE
, KM_MAYFAIL
);
1597 if (!xfs_attr_trace_buf
)
1598 goto out_free_bmbt_trace
;
1600 #ifdef XFS_DIR2_TRACE
1601 xfs_dir2_trace_buf
= ktrace_alloc(XFS_DIR2_GTRACE_SIZE
, KM_MAYFAIL
);
1602 if (!xfs_dir2_trace_buf
)
1603 goto out_free_attr_trace
;
1608 #ifdef XFS_DIR2_TRACE
1609 out_free_attr_trace
:
1611 #ifdef XFS_ATTR_TRACE
1612 ktrace_free(xfs_attr_trace_buf
);
1613 out_free_bmbt_trace
:
1615 #ifdef XFS_BTREE_TRACE
1616 ktrace_free(xfs_bmbt_trace_buf
);
1617 out_free_inobt_trace
:
1618 ktrace_free(xfs_inobt_trace_buf
);
1619 out_free_allocbt_trace
:
1620 ktrace_free(xfs_allocbt_trace_buf
);
1621 out_free_bmap_trace
:
1623 #ifdef XFS_BMAP_TRACE
1624 ktrace_free(xfs_bmap_trace_buf
);
1625 out_free_alloc_trace
:
1627 #ifdef XFS_ALLOC_TRACE
1628 ktrace_free(xfs_alloc_trace_buf
);
1635 xfs_free_trace_bufs(void)
1637 #ifdef XFS_DIR2_TRACE
1638 ktrace_free(xfs_dir2_trace_buf
);
1640 #ifdef XFS_ATTR_TRACE
1641 ktrace_free(xfs_attr_trace_buf
);
1643 #ifdef XFS_BTREE_TRACE
1644 ktrace_free(xfs_bmbt_trace_buf
);
1645 ktrace_free(xfs_inobt_trace_buf
);
1646 ktrace_free(xfs_allocbt_trace_buf
);
1648 #ifdef XFS_BMAP_TRACE
1649 ktrace_free(xfs_bmap_trace_buf
);
1651 #ifdef XFS_ALLOC_TRACE
1652 ktrace_free(xfs_alloc_trace_buf
);
1657 xfs_init_zones(void)
1660 xfs_ioend_zone
= kmem_zone_init(sizeof(xfs_ioend_t
), "xfs_ioend");
1661 if (!xfs_ioend_zone
)
1664 xfs_ioend_pool
= mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE
,
1666 if (!xfs_ioend_pool
)
1667 goto out_destroy_ioend_zone
;
1669 xfs_log_ticket_zone
= kmem_zone_init(sizeof(xlog_ticket_t
),
1671 if (!xfs_log_ticket_zone
)
1672 goto out_destroy_ioend_pool
;
1674 xfs_bmap_free_item_zone
= kmem_zone_init(sizeof(xfs_bmap_free_item_t
),
1675 "xfs_bmap_free_item");
1676 if (!xfs_bmap_free_item_zone
)
1677 goto out_destroy_log_ticket_zone
;
1679 xfs_btree_cur_zone
= kmem_zone_init(sizeof(xfs_btree_cur_t
),
1681 if (!xfs_btree_cur_zone
)
1682 goto out_destroy_bmap_free_item_zone
;
1684 xfs_da_state_zone
= kmem_zone_init(sizeof(xfs_da_state_t
),
1686 if (!xfs_da_state_zone
)
1687 goto out_destroy_btree_cur_zone
;
1689 xfs_dabuf_zone
= kmem_zone_init(sizeof(xfs_dabuf_t
), "xfs_dabuf");
1690 if (!xfs_dabuf_zone
)
1691 goto out_destroy_da_state_zone
;
1693 xfs_ifork_zone
= kmem_zone_init(sizeof(xfs_ifork_t
), "xfs_ifork");
1694 if (!xfs_ifork_zone
)
1695 goto out_destroy_dabuf_zone
;
1697 xfs_trans_zone
= kmem_zone_init(sizeof(xfs_trans_t
), "xfs_trans");
1698 if (!xfs_trans_zone
)
1699 goto out_destroy_ifork_zone
;
1702 * The size of the zone allocated buf log item is the maximum
1703 * size possible under XFS. This wastes a little bit of memory,
1704 * but it is much faster.
1706 xfs_buf_item_zone
= kmem_zone_init((sizeof(xfs_buf_log_item_t
) +
1707 (((XFS_MAX_BLOCKSIZE
/ XFS_BLI_CHUNK
) /
1708 NBWORD
) * sizeof(int))), "xfs_buf_item");
1709 if (!xfs_buf_item_zone
)
1710 goto out_destroy_trans_zone
;
1712 xfs_efd_zone
= kmem_zone_init((sizeof(xfs_efd_log_item_t
) +
1713 ((XFS_EFD_MAX_FAST_EXTENTS
- 1) *
1714 sizeof(xfs_extent_t
))), "xfs_efd_item");
1716 goto out_destroy_buf_item_zone
;
1718 xfs_efi_zone
= kmem_zone_init((sizeof(xfs_efi_log_item_t
) +
1719 ((XFS_EFI_MAX_FAST_EXTENTS
- 1) *
1720 sizeof(xfs_extent_t
))), "xfs_efi_item");
1722 goto out_destroy_efd_zone
;
1725 kmem_zone_init_flags(sizeof(xfs_inode_t
), "xfs_inode",
1726 KM_ZONE_HWALIGN
| KM_ZONE_RECLAIM
| KM_ZONE_SPREAD
,
1727 xfs_fs_inode_init_once
);
1728 if (!xfs_inode_zone
)
1729 goto out_destroy_efi_zone
;
1732 kmem_zone_init_flags(sizeof(xfs_inode_log_item_t
), "xfs_ili",
1733 KM_ZONE_SPREAD
, NULL
);
1735 goto out_destroy_inode_zone
;
1739 out_destroy_inode_zone
:
1740 kmem_zone_destroy(xfs_inode_zone
);
1741 out_destroy_efi_zone
:
1742 kmem_zone_destroy(xfs_efi_zone
);
1743 out_destroy_efd_zone
:
1744 kmem_zone_destroy(xfs_efd_zone
);
1745 out_destroy_buf_item_zone
:
1746 kmem_zone_destroy(xfs_buf_item_zone
);
1747 out_destroy_trans_zone
:
1748 kmem_zone_destroy(xfs_trans_zone
);
1749 out_destroy_ifork_zone
:
1750 kmem_zone_destroy(xfs_ifork_zone
);
1751 out_destroy_dabuf_zone
:
1752 kmem_zone_destroy(xfs_dabuf_zone
);
1753 out_destroy_da_state_zone
:
1754 kmem_zone_destroy(xfs_da_state_zone
);
1755 out_destroy_btree_cur_zone
:
1756 kmem_zone_destroy(xfs_btree_cur_zone
);
1757 out_destroy_bmap_free_item_zone
:
1758 kmem_zone_destroy(xfs_bmap_free_item_zone
);
1759 out_destroy_log_ticket_zone
:
1760 kmem_zone_destroy(xfs_log_ticket_zone
);
1761 out_destroy_ioend_pool
:
1762 mempool_destroy(xfs_ioend_pool
);
1763 out_destroy_ioend_zone
:
1764 kmem_zone_destroy(xfs_ioend_zone
);
1770 xfs_destroy_zones(void)
1772 kmem_zone_destroy(xfs_ili_zone
);
1773 kmem_zone_destroy(xfs_inode_zone
);
1774 kmem_zone_destroy(xfs_efi_zone
);
1775 kmem_zone_destroy(xfs_efd_zone
);
1776 kmem_zone_destroy(xfs_buf_item_zone
);
1777 kmem_zone_destroy(xfs_trans_zone
);
1778 kmem_zone_destroy(xfs_ifork_zone
);
1779 kmem_zone_destroy(xfs_dabuf_zone
);
1780 kmem_zone_destroy(xfs_da_state_zone
);
1781 kmem_zone_destroy(xfs_btree_cur_zone
);
1782 kmem_zone_destroy(xfs_bmap_free_item_zone
);
1783 kmem_zone_destroy(xfs_log_ticket_zone
);
1784 mempool_destroy(xfs_ioend_pool
);
1785 kmem_zone_destroy(xfs_ioend_zone
);
1794 printk(KERN_INFO XFS_VERSION_STRING
" with "
1795 XFS_BUILD_OPTIONS
" enabled\n");
1801 error
= xfs_init_zones();
1805 error
= xfs_alloc_trace_bufs();
1807 goto out_destroy_zones
;
1809 error
= xfs_mru_cache_init();
1811 goto out_free_trace_buffers
;
1813 error
= xfs_filestream_init();
1815 goto out_mru_cache_uninit
;
1817 error
= xfs_buf_init();
1819 goto out_filestream_uninit
;
1821 error
= xfs_init_procfs();
1823 goto out_buf_terminate
;
1825 error
= xfs_sysctl_register();
1827 goto out_cleanup_procfs
;
1831 error
= register_filesystem(&xfs_fs_type
);
1833 goto out_sysctl_unregister
;
1836 out_sysctl_unregister
:
1837 xfs_sysctl_unregister();
1839 xfs_cleanup_procfs();
1841 xfs_buf_terminate();
1842 out_filestream_uninit
:
1843 xfs_filestream_uninit();
1844 out_mru_cache_uninit
:
1845 xfs_mru_cache_uninit();
1846 out_free_trace_buffers
:
1847 xfs_free_trace_bufs();
1849 xfs_destroy_zones();
1858 unregister_filesystem(&xfs_fs_type
);
1859 xfs_sysctl_unregister();
1860 xfs_cleanup_procfs();
1861 xfs_buf_terminate();
1862 xfs_filestream_uninit();
1863 xfs_mru_cache_uninit();
1864 xfs_free_trace_bufs();
1865 xfs_destroy_zones();
1869 module_init(init_xfs_fs
);
1870 module_exit(exit_xfs_fs
);
1872 MODULE_AUTHOR("Silicon Graphics, Inc.");
1873 MODULE_DESCRIPTION(XFS_VERSION_STRING
" with " XFS_BUILD_OPTIONS
" enabled");
1874 MODULE_LICENSE("GPL");