2 * Copyright (c) 2000-2005 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
20 #include "xfs_types.h"
24 #include "xfs_trans.h"
29 #include "xfs_dmapi.h"
30 #include "xfs_mount.h"
31 #include "xfs_da_btree.h"
32 #include "xfs_bmap_btree.h"
33 #include "xfs_ialloc_btree.h"
34 #include "xfs_alloc_btree.h"
35 #include "xfs_dir_sf.h"
36 #include "xfs_dir2_sf.h"
37 #include "xfs_attr_sf.h"
38 #include "xfs_dinode.h"
39 #include "xfs_inode.h"
40 #include "xfs_inode_item.h"
41 #include "xfs_btree.h"
42 #include "xfs_alloc.h"
43 #include "xfs_ialloc.h"
44 #include "xfs_quota.h"
45 #include "xfs_error.h"
48 #include "xfs_refcache.h"
49 #include "xfs_buf_item.h"
50 #include "xfs_log_priv.h"
51 #include "xfs_dir2_trace.h"
52 #include "xfs_extfree_item.h"
56 #include "xfs_fsops.h"
58 STATIC
int xfs_sync(bhv_desc_t
*, int, cred_t
*);
63 extern kmem_zone_t
*xfs_bmap_free_item_zone
;
64 extern kmem_zone_t
*xfs_btree_cur_zone
;
65 extern kmem_zone_t
*xfs_trans_zone
;
66 extern kmem_zone_t
*xfs_buf_item_zone
;
67 extern kmem_zone_t
*xfs_dabuf_zone
;
68 #ifdef XFS_DABUF_DEBUG
69 extern lock_t xfs_dabuf_global_lock
;
70 spinlock_init(&xfs_dabuf_global_lock
, "xfsda");
74 * Initialize all of the zone allocators we use.
76 xfs_bmap_free_item_zone
= kmem_zone_init(sizeof(xfs_bmap_free_item_t
),
77 "xfs_bmap_free_item");
78 xfs_btree_cur_zone
= kmem_zone_init(sizeof(xfs_btree_cur_t
),
80 xfs_inode_zone
= kmem_zone_init(sizeof(xfs_inode_t
), "xfs_inode");
81 xfs_trans_zone
= kmem_zone_init(sizeof(xfs_trans_t
), "xfs_trans");
83 kmem_zone_init(sizeof(xfs_da_state_t
), "xfs_da_state");
84 xfs_dabuf_zone
= kmem_zone_init(sizeof(xfs_dabuf_t
), "xfs_dabuf");
87 * The size of the zone allocated buf log item is the maximum
88 * size possible under XFS. This wastes a little bit of memory,
89 * but it is much faster.
92 kmem_zone_init((sizeof(xfs_buf_log_item_t
) +
93 (((XFS_MAX_BLOCKSIZE
/ XFS_BLI_CHUNK
) /
94 NBWORD
) * sizeof(int))),
96 xfs_efd_zone
= kmem_zone_init((sizeof(xfs_efd_log_item_t
) +
97 ((XFS_EFD_MAX_FAST_EXTENTS
- 1) * sizeof(xfs_extent_t
))),
99 xfs_efi_zone
= kmem_zone_init((sizeof(xfs_efi_log_item_t
) +
100 ((XFS_EFI_MAX_FAST_EXTENTS
- 1) * sizeof(xfs_extent_t
))),
102 xfs_ifork_zone
= kmem_zone_init(sizeof(xfs_ifork_t
), "xfs_ifork");
103 xfs_ili_zone
= kmem_zone_init(sizeof(xfs_inode_log_item_t
), "xfs_ili");
104 xfs_chashlist_zone
= kmem_zone_init(sizeof(xfs_chashlist_t
),
106 xfs_acl_zone_init(xfs_acl_zone
, "xfs_acl");
109 * Allocate global trace buffers.
111 #ifdef XFS_ALLOC_TRACE
112 xfs_alloc_trace_buf
= ktrace_alloc(XFS_ALLOC_TRACE_SIZE
, KM_SLEEP
);
114 #ifdef XFS_BMAP_TRACE
115 xfs_bmap_trace_buf
= ktrace_alloc(XFS_BMAP_TRACE_SIZE
, KM_SLEEP
);
117 #ifdef XFS_BMBT_TRACE
118 xfs_bmbt_trace_buf
= ktrace_alloc(XFS_BMBT_TRACE_SIZE
, KM_SLEEP
);
121 xfs_dir_trace_buf
= ktrace_alloc(XFS_DIR_TRACE_SIZE
, KM_SLEEP
);
123 #ifdef XFS_ATTR_TRACE
124 xfs_attr_trace_buf
= ktrace_alloc(XFS_ATTR_TRACE_SIZE
, KM_SLEEP
);
126 #ifdef XFS_DIR2_TRACE
127 xfs_dir2_trace_buf
= ktrace_alloc(XFS_DIR2_GTRACE_SIZE
, KM_SLEEP
);
132 #if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
133 xfs_error_test_init();
134 #endif /* DEBUG || INDUCE_IO_ERROR */
137 xfs_sysctl_register();
144 extern kmem_zone_t
*xfs_bmap_free_item_zone
;
145 extern kmem_zone_t
*xfs_btree_cur_zone
;
146 extern kmem_zone_t
*xfs_inode_zone
;
147 extern kmem_zone_t
*xfs_trans_zone
;
148 extern kmem_zone_t
*xfs_da_state_zone
;
149 extern kmem_zone_t
*xfs_dabuf_zone
;
150 extern kmem_zone_t
*xfs_efd_zone
;
151 extern kmem_zone_t
*xfs_efi_zone
;
152 extern kmem_zone_t
*xfs_buf_item_zone
;
153 extern kmem_zone_t
*xfs_chashlist_zone
;
155 xfs_cleanup_procfs();
156 xfs_sysctl_unregister();
157 xfs_refcache_destroy();
158 xfs_acl_zone_destroy(xfs_acl_zone
);
160 #ifdef XFS_DIR2_TRACE
161 ktrace_free(xfs_dir2_trace_buf
);
163 #ifdef XFS_ATTR_TRACE
164 ktrace_free(xfs_attr_trace_buf
);
167 ktrace_free(xfs_dir_trace_buf
);
169 #ifdef XFS_BMBT_TRACE
170 ktrace_free(xfs_bmbt_trace_buf
);
172 #ifdef XFS_BMAP_TRACE
173 ktrace_free(xfs_bmap_trace_buf
);
175 #ifdef XFS_ALLOC_TRACE
176 ktrace_free(xfs_alloc_trace_buf
);
179 kmem_cache_destroy(xfs_bmap_free_item_zone
);
180 kmem_cache_destroy(xfs_btree_cur_zone
);
181 kmem_cache_destroy(xfs_inode_zone
);
182 kmem_cache_destroy(xfs_trans_zone
);
183 kmem_cache_destroy(xfs_da_state_zone
);
184 kmem_cache_destroy(xfs_dabuf_zone
);
185 kmem_cache_destroy(xfs_buf_item_zone
);
186 kmem_cache_destroy(xfs_efd_zone
);
187 kmem_cache_destroy(xfs_efi_zone
);
188 kmem_cache_destroy(xfs_ifork_zone
);
189 kmem_cache_destroy(xfs_ili_zone
);
190 kmem_cache_destroy(xfs_chashlist_zone
);
196 * This function fills in xfs_mount_t fields based on mount args.
197 * Note: the superblock has _not_ yet been read in.
202 struct xfs_mount_args
*ap
,
203 struct xfs_mount
*mp
)
205 /* Values are in BBs */
206 if ((ap
->flags
& XFSMNT_NOALIGN
) != XFSMNT_NOALIGN
) {
208 * At this point the superblock has not been read
209 * in, therefore we do not know the block size.
210 * Before the mount call ends we will convert
213 mp
->m_dalign
= ap
->sunit
;
214 mp
->m_swidth
= ap
->swidth
;
217 if (ap
->logbufs
!= -1 &&
219 (ap
->logbufs
< XLOG_MIN_ICLOGS
||
220 ap
->logbufs
> XLOG_MAX_ICLOGS
)) {
222 "XFS: invalid logbufs value: %d [not %d-%d]",
223 ap
->logbufs
, XLOG_MIN_ICLOGS
, XLOG_MAX_ICLOGS
);
224 return XFS_ERROR(EINVAL
);
226 mp
->m_logbufs
= ap
->logbufs
;
227 if (ap
->logbufsize
!= -1 &&
228 ap
->logbufsize
!= 0 &&
229 ap
->logbufsize
!= 16 * 1024 &&
230 ap
->logbufsize
!= 32 * 1024 &&
231 ap
->logbufsize
!= 64 * 1024 &&
232 ap
->logbufsize
!= 128 * 1024 &&
233 ap
->logbufsize
!= 256 * 1024) {
235 "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
237 return XFS_ERROR(EINVAL
);
239 mp
->m_ihsize
= ap
->ihashsize
;
240 mp
->m_logbsize
= ap
->logbufsize
;
241 mp
->m_fsname_len
= strlen(ap
->fsname
) + 1;
242 mp
->m_fsname
= kmem_alloc(mp
->m_fsname_len
, KM_SLEEP
);
243 strcpy(mp
->m_fsname
, ap
->fsname
);
245 mp
->m_rtname
= kmem_alloc(strlen(ap
->rtname
) + 1, KM_SLEEP
);
246 strcpy(mp
->m_rtname
, ap
->rtname
);
248 if (ap
->logname
[0]) {
249 mp
->m_logname
= kmem_alloc(strlen(ap
->logname
) + 1, KM_SLEEP
);
250 strcpy(mp
->m_logname
, ap
->logname
);
253 if (ap
->flags
& XFSMNT_WSYNC
)
254 mp
->m_flags
|= XFS_MOUNT_WSYNC
;
256 if (ap
->flags
& XFSMNT_INO64
) {
257 mp
->m_flags
|= XFS_MOUNT_INO64
;
258 mp
->m_inoadd
= XFS_INO64_OFFSET
;
261 if (ap
->flags
& XFSMNT_NOATIME
)
262 mp
->m_flags
|= XFS_MOUNT_NOATIME
;
263 if (ap
->flags
& XFSMNT_RETERR
)
264 mp
->m_flags
|= XFS_MOUNT_RETERR
;
265 if (ap
->flags
& XFSMNT_NOALIGN
)
266 mp
->m_flags
|= XFS_MOUNT_NOALIGN
;
267 if (ap
->flags
& XFSMNT_SWALLOC
)
268 mp
->m_flags
|= XFS_MOUNT_SWALLOC
;
269 if (ap
->flags
& XFSMNT_OSYNCISOSYNC
)
270 mp
->m_flags
|= XFS_MOUNT_OSYNCISOSYNC
;
271 if (ap
->flags
& XFSMNT_32BITINODES
)
272 mp
->m_flags
|= XFS_MOUNT_32BITINODES
;
274 if (ap
->flags
& XFSMNT_IOSIZE
) {
275 if (ap
->iosizelog
> XFS_MAX_IO_LOG
||
276 ap
->iosizelog
< XFS_MIN_IO_LOG
) {
278 "XFS: invalid log iosize: %d [not %d-%d]",
279 ap
->iosizelog
, XFS_MIN_IO_LOG
,
281 return XFS_ERROR(EINVAL
);
284 mp
->m_flags
|= XFS_MOUNT_DFLT_IOSIZE
;
285 mp
->m_readio_log
= mp
->m_writeio_log
= ap
->iosizelog
;
288 if (ap
->flags
& XFSMNT_IHASHSIZE
)
289 mp
->m_flags
|= XFS_MOUNT_IHASHSIZE
;
290 if (ap
->flags
& XFSMNT_IDELETE
)
291 mp
->m_flags
|= XFS_MOUNT_IDELETE
;
292 if (ap
->flags
& XFSMNT_DIRSYNC
)
293 mp
->m_flags
|= XFS_MOUNT_DIRSYNC
;
294 if (ap
->flags
& XFSMNT_ATTR2
)
295 mp
->m_flags
|= XFS_MOUNT_ATTR2
;
297 if (ap
->flags2
& XFSMNT2_COMPAT_IOSIZE
)
298 mp
->m_flags
|= XFS_MOUNT_COMPAT_IOSIZE
;
301 * no recovery flag requires a read-only mount
303 if (ap
->flags
& XFSMNT_NORECOVERY
) {
304 if (!(vfs
->vfs_flag
& VFS_RDONLY
)) {
306 "XFS: tried to mount a FS read-write without recovery!");
307 return XFS_ERROR(EINVAL
);
309 mp
->m_flags
|= XFS_MOUNT_NORECOVERY
;
312 if (ap
->flags
& XFSMNT_NOUUID
)
313 mp
->m_flags
|= XFS_MOUNT_NOUUID
;
314 if (ap
->flags
& XFSMNT_BARRIER
)
315 mp
->m_flags
|= XFS_MOUNT_BARRIER
;
317 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
323 * This function fills in xfs_mount_t fields based on mount args.
324 * Note: the superblock _has_ now been read in.
329 struct xfs_mount_args
*ap
,
330 struct xfs_mount
*mp
)
332 int ronly
= (vfs
->vfs_flag
& VFS_RDONLY
);
334 /* Fail a mount where the logbuf is smaller then the log stripe */
335 if (XFS_SB_VERSION_HASLOGV2(&mp
->m_sb
)) {
336 if ((ap
->logbufsize
<= 0) &&
337 (mp
->m_sb
.sb_logsunit
> XLOG_BIG_RECORD_BSIZE
)) {
338 mp
->m_logbsize
= mp
->m_sb
.sb_logsunit
;
339 } else if (ap
->logbufsize
> 0 &&
340 ap
->logbufsize
< mp
->m_sb
.sb_logsunit
) {
342 "XFS: logbuf size must be greater than or equal to log stripe size");
343 return XFS_ERROR(EINVAL
);
346 /* Fail a mount if the logbuf is larger than 32K */
347 if (ap
->logbufsize
> XLOG_BIG_RECORD_BSIZE
) {
349 "XFS: logbuf size for version 1 logs must be 16K or 32K");
350 return XFS_ERROR(EINVAL
);
354 if (XFS_SB_VERSION_HASATTR2(&mp
->m_sb
)) {
355 mp
->m_flags
|= XFS_MOUNT_ATTR2
;
359 * prohibit r/w mounts of read-only filesystems
361 if ((mp
->m_sb
.sb_flags
& XFS_SBF_READONLY
) && !ronly
) {
363 "XFS: cannot mount a read-only filesystem as read-write");
364 return XFS_ERROR(EROFS
);
368 * check for shared mount.
370 if (ap
->flags
& XFSMNT_SHARED
) {
371 if (!XFS_SB_VERSION_HASSHARED(&mp
->m_sb
))
372 return XFS_ERROR(EINVAL
);
375 * For IRIX 6.5, shared mounts must have the shared
376 * version bit set, have the persistent readonly
377 * field set, must be version 0 and can only be mounted
380 if (!ronly
|| !(mp
->m_sb
.sb_flags
& XFS_SBF_READONLY
) ||
381 (mp
->m_sb
.sb_shared_vn
!= 0))
382 return XFS_ERROR(EINVAL
);
384 mp
->m_flags
|= XFS_MOUNT_SHARED
;
387 * Shared XFS V0 can't deal with DMI. Return EINVAL.
389 if (mp
->m_sb
.sb_shared_vn
== 0 && (ap
->flags
& XFSMNT_DMAPI
))
390 return XFS_ERROR(EINVAL
);
399 * The file system configurations are:
400 * (1) device (partition) with data and internal log
401 * (2) logical volume with data and log subvolumes.
402 * (3) logical volume with data, log, and realtime subvolumes.
404 * We only have to handle opening the log and realtime volumes here if
405 * they are present. The data subvolume has already been opened by
406 * get_sb_bdev() and is stored in vfsp->vfs_super->s_bdev.
410 struct bhv_desc
*bhvp
,
411 struct xfs_mount_args
*args
,
414 struct vfs
*vfsp
= bhvtovfs(bhvp
);
416 struct xfs_mount
*mp
= XFS_BHVTOM(bhvp
);
417 struct block_device
*ddev
, *logdev
, *rtdev
;
418 int flags
= 0, error
;
420 ddev
= vfsp
->vfs_super
->s_bdev
;
421 logdev
= rtdev
= NULL
;
424 * Setup xfs_mount function vectors from available behaviors
426 p
= vfs_bhv_lookup(vfsp
, VFS_POSITION_DM
);
427 mp
->m_dm_ops
= p
? *(xfs_dmops_t
*) vfs_bhv_custom(p
) : xfs_dmcore_stub
;
428 p
= vfs_bhv_lookup(vfsp
, VFS_POSITION_QM
);
429 mp
->m_qm_ops
= p
? *(xfs_qmops_t
*) vfs_bhv_custom(p
) : xfs_qmcore_stub
;
430 p
= vfs_bhv_lookup(vfsp
, VFS_POSITION_IO
);
431 mp
->m_io_ops
= p
? *(xfs_ioops_t
*) vfs_bhv_custom(p
) : xfs_iocore_xfs
;
434 * Open real time and log devices - order is important.
436 if (args
->logname
[0]) {
437 error
= xfs_blkdev_get(mp
, args
->logname
, &logdev
);
441 if (args
->rtname
[0]) {
442 error
= xfs_blkdev_get(mp
, args
->rtname
, &rtdev
);
444 xfs_blkdev_put(logdev
);
448 if (rtdev
== ddev
|| rtdev
== logdev
) {
450 "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
451 xfs_blkdev_put(logdev
);
452 xfs_blkdev_put(rtdev
);
458 * Setup xfs_mount buffer target pointers
461 mp
->m_ddev_targp
= xfs_alloc_buftarg(ddev
, 0);
462 if (!mp
->m_ddev_targp
) {
463 xfs_blkdev_put(logdev
);
464 xfs_blkdev_put(rtdev
);
468 mp
->m_rtdev_targp
= xfs_alloc_buftarg(rtdev
, 1);
469 if (!mp
->m_rtdev_targp
)
472 mp
->m_logdev_targp
= (logdev
&& logdev
!= ddev
) ?
473 xfs_alloc_buftarg(logdev
, 1) : mp
->m_ddev_targp
;
474 if (!mp
->m_logdev_targp
)
478 * Setup flags based on mount(2) options and then the superblock
480 error
= xfs_start_flags(vfsp
, args
, mp
);
483 error
= xfs_readsb(mp
);
486 error
= xfs_finish_flags(vfsp
, args
, mp
);
491 * Setup xfs_mount buffer target pointers based on superblock
493 error
= xfs_setsize_buftarg(mp
->m_ddev_targp
, mp
->m_sb
.sb_blocksize
,
494 mp
->m_sb
.sb_sectsize
);
495 if (!error
&& logdev
&& logdev
!= ddev
) {
496 unsigned int log_sector_size
= BBSIZE
;
498 if (XFS_SB_VERSION_HASSECTOR(&mp
->m_sb
))
499 log_sector_size
= mp
->m_sb
.sb_logsectsize
;
500 error
= xfs_setsize_buftarg(mp
->m_logdev_targp
,
501 mp
->m_sb
.sb_blocksize
,
505 error
= xfs_setsize_buftarg(mp
->m_rtdev_targp
,
506 mp
->m_sb
.sb_blocksize
,
507 mp
->m_sb
.sb_sectsize
);
511 if ((mp
->m_flags
& XFS_MOUNT_BARRIER
) && !(vfsp
->vfs_flag
& VFS_RDONLY
))
512 xfs_mountfs_check_barriers(mp
);
514 error
= XFS_IOINIT(vfsp
, args
, flags
);
524 xfs_binval(mp
->m_ddev_targp
);
525 if (logdev
&& logdev
!= ddev
)
526 xfs_binval(mp
->m_logdev_targp
);
528 xfs_binval(mp
->m_rtdev_targp
);
530 xfs_unmountfs_close(mp
, credp
);
540 struct vfs
*vfsp
= bhvtovfs(bdp
);
541 xfs_mount_t
*mp
= XFS_BHVTOM(bdp
);
544 int unmount_event_wanted
= 0;
545 int unmount_event_flags
= 0;
546 int xfs_unmountfs_needed
= 0;
552 if (vfsp
->vfs_flag
& VFS_DMI
) {
553 error
= XFS_SEND_PREUNMOUNT(mp
, vfsp
,
554 rvp
, DM_RIGHT_NULL
, rvp
, DM_RIGHT_NULL
,
556 (mp
->m_dmevmask
& (1<<DM_EVENT_PREUNMOUNT
))?
557 0:DM_FLAGS_UNWANTED
);
559 return XFS_ERROR(error
);
560 unmount_event_wanted
= 1;
561 unmount_event_flags
= (mp
->m_dmevmask
& (1<<DM_EVENT_UNMOUNT
))?
562 0 : DM_FLAGS_UNWANTED
;
566 * First blow any referenced inode from this file system
567 * out of the reference cache, and delete the timer.
569 xfs_refcache_purge_mp(mp
);
571 XFS_bflush(mp
->m_ddev_targp
);
572 error
= xfs_unmount_flush(mp
, 0);
576 ASSERT(vn_count(rvp
) == 1);
579 * Drop the reference count
584 * If we're forcing a shutdown, typically because of a media error,
585 * we want to make sure we invalidate dirty pages that belong to
586 * referenced vnodes as well.
588 if (XFS_FORCED_SHUTDOWN(mp
)) {
589 error
= xfs_sync(&mp
->m_bhv
,
590 (SYNC_WAIT
| SYNC_CLOSE
), credp
);
591 ASSERT(error
!= EFSCORRUPTED
);
593 xfs_unmountfs_needed
= 1;
596 /* Send DMAPI event, if required.
597 * Then do xfs_unmountfs() if needed.
598 * Then return error (or zero).
600 if (unmount_event_wanted
) {
601 /* Note: mp structure must still exist for
602 * XFS_SEND_UNMOUNT() call.
604 XFS_SEND_UNMOUNT(mp
, vfsp
, error
== 0 ? rvp
: NULL
,
605 DM_RIGHT_NULL
, 0, error
, unmount_event_flags
);
607 if (xfs_unmountfs_needed
) {
609 * Call common unmount function to flush to disk
610 * and free the super block buffer & mount structures.
612 xfs_unmountfs(mp
, credp
);
615 return XFS_ERROR(error
);
622 int count
= 0, pincount
;
624 xfs_refcache_purge_mp(mp
);
625 xfs_flush_buftarg(mp
->m_ddev_targp
, 0);
626 xfs_finish_reclaim_all(mp
, 0);
628 /* This loop must run at least twice.
629 * The first instance of the loop will flush
630 * most meta data but that will generate more
631 * meta data (typically directory updates).
632 * Which then must be flushed and logged before
633 * we can write the unmount record.
636 xfs_syncsub(mp
, SYNC_REMOUNT
|SYNC_ATTR
|SYNC_WAIT
, 0, NULL
);
637 pincount
= xfs_flush_buftarg(mp
->m_ddev_targp
, 1);
651 struct xfs_mount_args
*args
)
653 struct vfs
*vfsp
= bhvtovfs(bdp
);
654 xfs_mount_t
*mp
= XFS_BHVTOM(bdp
);
657 if (args
->flags
& XFSMNT_NOATIME
)
658 mp
->m_flags
|= XFS_MOUNT_NOATIME
;
660 mp
->m_flags
&= ~XFS_MOUNT_NOATIME
;
662 if (args
->flags
& XFSMNT_BARRIER
)
663 mp
->m_flags
|= XFS_MOUNT_BARRIER
;
665 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
667 if ((vfsp
->vfs_flag
& VFS_RDONLY
) &&
668 !(*flags
& MS_RDONLY
)) {
669 vfsp
->vfs_flag
&= ~VFS_RDONLY
;
671 if (args
->flags
& XFSMNT_BARRIER
)
672 xfs_mountfs_check_barriers(mp
);
675 if (!(vfsp
->vfs_flag
& VFS_RDONLY
) &&
676 (*flags
& MS_RDONLY
)) {
677 VFS_SYNC(vfsp
, SYNC_FSDATA
|SYNC_BDFLUSH
|SYNC_ATTR
, NULL
, error
);
681 /* Ok now write out an unmount record */
682 xfs_log_unmount_write(mp
);
683 xfs_unmountfs_writesb(mp
);
684 vfsp
->vfs_flag
|= VFS_RDONLY
;
691 * xfs_unmount_flush implements a set of flush operation on special
692 * inodes, which are needed as a separate set of operations so that
693 * they can be called as part of relocation process.
697 xfs_mount_t
*mp
, /* Mount structure we are getting
699 int relocation
) /* Called from vfs relocation. */
701 xfs_inode_t
*rip
= mp
->m_rootip
;
703 xfs_inode_t
*rsumip
= NULL
;
704 vnode_t
*rvp
= XFS_ITOV(rip
);
707 xfs_ilock(rip
, XFS_ILOCK_EXCL
);
711 * Flush out the real time inodes.
713 if ((rbmip
= mp
->m_rbmip
) != NULL
) {
714 xfs_ilock(rbmip
, XFS_ILOCK_EXCL
);
716 error
= xfs_iflush(rbmip
, XFS_IFLUSH_SYNC
);
717 xfs_iunlock(rbmip
, XFS_ILOCK_EXCL
);
719 if (error
== EFSCORRUPTED
)
722 ASSERT(vn_count(XFS_ITOV(rbmip
)) == 1);
724 rsumip
= mp
->m_rsumip
;
725 xfs_ilock(rsumip
, XFS_ILOCK_EXCL
);
727 error
= xfs_iflush(rsumip
, XFS_IFLUSH_SYNC
);
728 xfs_iunlock(rsumip
, XFS_ILOCK_EXCL
);
730 if (error
== EFSCORRUPTED
)
733 ASSERT(vn_count(XFS_ITOV(rsumip
)) == 1);
737 * Synchronously flush root inode to disk
739 error
= xfs_iflush(rip
, XFS_IFLUSH_SYNC
);
740 if (error
== EFSCORRUPTED
)
743 if (vn_count(rvp
) != 1 && !relocation
) {
744 xfs_iunlock(rip
, XFS_ILOCK_EXCL
);
745 return XFS_ERROR(EBUSY
);
749 * Release dquot that rootinode, rbmino and rsumino might be holding,
750 * flush and purge the quota inodes.
752 error
= XFS_QM_UNMOUNT(mp
);
753 if (error
== EFSCORRUPTED
)
757 VN_RELE(XFS_ITOV(rbmip
));
758 VN_RELE(XFS_ITOV(rsumip
));
761 xfs_iunlock(rip
, XFS_ILOCK_EXCL
);
768 xfs_iunlock(rip
, XFS_ILOCK_EXCL
);
770 return XFS_ERROR(EFSCORRUPTED
);
774 * xfs_root extracts the root vnode from a vfs.
776 * vfsp -- the vfs struct for the desired file system
777 * vpp -- address of the caller's vnode pointer which should be
778 * set to the desired fs root vnode
787 vp
= XFS_ITOV((XFS_BHVTOM(bdp
))->m_rootip
);
796 * Fill in the statvfs structure for the given file system. We use
797 * the superblock lock in the mount structure to ensure a consistent
798 * snapshot of the counters returned.
812 mp
= XFS_BHVTOM(bdp
);
815 statp
->f_type
= XFS_SB_MAGIC
;
818 statp
->f_bsize
= sbp
->sb_blocksize
;
819 lsize
= sbp
->sb_logstart
? sbp
->sb_logblocks
: 0;
820 statp
->f_blocks
= sbp
->sb_dblocks
- lsize
;
821 statp
->f_bfree
= statp
->f_bavail
= sbp
->sb_fdblocks
;
822 fakeinos
= statp
->f_bfree
<< sbp
->sb_inopblog
;
824 fakeinos
+= mp
->m_inoadd
;
827 MIN(sbp
->sb_icount
+ fakeinos
, (__uint64_t
)XFS_MAXINUMBER
);
832 statp
->f_files
= min_t(typeof(statp
->f_files
),
835 statp
->f_ffree
= statp
->f_files
- (sbp
->sb_icount
- sbp
->sb_ifree
);
836 XFS_SB_UNLOCK(mp
, s
);
838 xfs_statvfs_fsid(statp
, mp
);
839 statp
->f_namelen
= MAXNAMELEN
- 1;
846 * xfs_sync flushes any pending I/O to file system vfsp.
848 * This routine is called by vfs_sync() to make sure that things make it
849 * out to disk eventually, on sync() system calls to flush out everything,
850 * and when the file system is unmounted. For the vfs_sync() case, all
851 * we really need to do is sync out the log to make all of our meta-data
852 * updates permanent (except for timestamps). For calls from pflushd(),
853 * dirty pages are kept moving by calling pdflush() on the inodes
854 * containing them. We also flush the inodes that we can lock without
855 * sleeping and the superblock if we can lock it without sleeping from
856 * vfs_sync() so that items at the tail of the log are always moving out.
859 * SYNC_BDFLUSH - We're being called from vfs_sync() so we don't want
860 * to sleep if we can help it. All we really need
861 * to do is ensure that the log is synced at least
862 * periodically. We also push the inodes and
863 * superblock if we can lock them without sleeping
864 * and they are not pinned.
865 * SYNC_ATTR - We need to flush the inodes. If SYNC_BDFLUSH is not
866 * set, then we really want to lock each inode and flush
868 * SYNC_WAIT - All the flushes that take place in this call should
870 * SYNC_DELWRI - This tells us to push dirty pages associated with
871 * inodes. SYNC_WAIT and SYNC_BDFLUSH are used to
872 * determine if they should be flushed sync, async, or
874 * SYNC_CLOSE - This flag is passed when the system is being
875 * unmounted. We should sync and invalidate everthing.
876 * SYNC_FSDATA - This indicates that the caller would like to make
877 * sure the superblock is safe on disk. We can ensure
878 * this by simply makeing sure the log gets flushed
879 * if SYNC_BDFLUSH is set, and by actually writing it
890 xfs_mount_t
*mp
= XFS_BHVTOM(bdp
);
892 if (unlikely(flags
== SYNC_QUIESCE
))
893 return xfs_quiesce_fs(mp
);
895 return xfs_syncsub(mp
, flags
, 0, NULL
);
899 * xfs sync routine for internal use
901 * This routine supports all of the flags defined for the generic VFS_SYNC
902 * interface as explained above under xfs_sync. In the interests of not
903 * changing interfaces within the 6.5 family, additional internallly-
904 * required functions are specified within a separate xflags parameter,
905 * only available by calling this routine.
915 xfs_inode_t
*ip
= NULL
;
916 xfs_inode_t
*ip_next
;
923 uint base_lock_flags
;
924 boolean_t mount_locked
;
925 boolean_t vnode_refed
;
928 xfs_iptr_t
*ipointer
;
930 boolean_t ipointer_in
= B_FALSE
;
932 #define IPOINTER_SET ipointer_in = B_TRUE
933 #define IPOINTER_CLR ipointer_in = B_FALSE
940 /* Insert a marker record into the inode list after inode ip. The list
941 * must be locked when this is called. After the call the list will no
944 #define IPOINTER_INSERT(ip, mp) { \
945 ASSERT(ipointer_in == B_FALSE); \
946 ipointer->ip_mnext = ip->i_mnext; \
947 ipointer->ip_mprev = ip; \
948 ip->i_mnext = (xfs_inode_t *)ipointer; \
949 ipointer->ip_mnext->i_mprev = (xfs_inode_t *)ipointer; \
951 XFS_MOUNT_IUNLOCK(mp); \
952 mount_locked = B_FALSE; \
956 /* Remove the marker from the inode list. If the marker was the only item
957 * in the list then there are no remaining inodes and we should zero out
958 * the whole list. If we are the current head of the list then move the head
961 #define IPOINTER_REMOVE(ip, mp) { \
962 ASSERT(ipointer_in == B_TRUE); \
963 if (ipointer->ip_mnext != (xfs_inode_t *)ipointer) { \
964 ip = ipointer->ip_mnext; \
965 ip->i_mprev = ipointer->ip_mprev; \
966 ipointer->ip_mprev->i_mnext = ip; \
967 if (mp->m_inodes == (xfs_inode_t *)ipointer) { \
971 ASSERT(mp->m_inodes == (xfs_inode_t *)ipointer); \
972 mp->m_inodes = NULL; \
978 #define XFS_PREEMPT_MASK 0x7f
982 if (XFS_MTOVFS(mp
)->vfs_flag
& VFS_RDONLY
)
988 /* Allocate a reference marker */
989 ipointer
= (xfs_iptr_t
*)kmem_zalloc(sizeof(xfs_iptr_t
), KM_SLEEP
);
991 fflag
= XFS_B_ASYNC
; /* default is don't wait */
992 if (flags
& (SYNC_BDFLUSH
| SYNC_DELWRI
))
993 fflag
= XFS_B_DELWRI
;
994 if (flags
& SYNC_WAIT
)
995 fflag
= 0; /* synchronous overrides all */
997 base_lock_flags
= XFS_ILOCK_SHARED
;
998 if (flags
& (SYNC_DELWRI
| SYNC_CLOSE
)) {
1000 * We need the I/O lock if we're going to call any of
1001 * the flush/inval routines.
1003 base_lock_flags
|= XFS_IOLOCK_SHARED
;
1006 XFS_MOUNT_ILOCK(mp
);
1010 mount_locked
= B_TRUE
;
1011 vnode_refed
= B_FALSE
;
1016 ASSERT(ipointer_in
== B_FALSE
);
1017 ASSERT(vnode_refed
== B_FALSE
);
1019 lock_flags
= base_lock_flags
;
1022 * There were no inodes in the list, just break out
1030 * We found another sync thread marker - skip it
1032 if (ip
->i_mount
== NULL
) {
1037 vp
= XFS_ITOV_NULL(ip
);
1040 * If the vnode is gone then this is being torn down,
1041 * call reclaim if it is flushed, else let regular flush
1042 * code deal with it later in the loop.
1046 /* Skip ones already in reclaim */
1047 if (ip
->i_flags
& XFS_IRECLAIM
) {
1051 if (xfs_ilock_nowait(ip
, XFS_ILOCK_EXCL
) == 0) {
1053 } else if ((xfs_ipincount(ip
) == 0) &&
1054 xfs_iflock_nowait(ip
)) {
1055 IPOINTER_INSERT(ip
, mp
);
1057 xfs_finish_reclaim(ip
, 1,
1058 XFS_IFLUSH_DELWRI_ELSE_ASYNC
);
1060 XFS_MOUNT_ILOCK(mp
);
1061 mount_locked
= B_TRUE
;
1062 IPOINTER_REMOVE(ip
, mp
);
1064 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1075 if (XFS_FORCED_SHUTDOWN(mp
) && !(flags
& SYNC_CLOSE
)) {
1076 XFS_MOUNT_IUNLOCK(mp
);
1077 kmem_free(ipointer
, sizeof(xfs_iptr_t
));
1082 * If this is just vfs_sync() or pflushd() calling
1083 * then we can skip inodes for which it looks like
1084 * there is nothing to do. Since we don't have the
1085 * inode locked this is racey, but these are periodic
1086 * calls so it doesn't matter. For the others we want
1087 * to know for sure, so we at least try to lock them.
1089 if (flags
& SYNC_BDFLUSH
) {
1090 if (((ip
->i_itemp
== NULL
) ||
1091 !(ip
->i_itemp
->ili_format
.ilf_fields
&
1093 (ip
->i_update_core
== 0)) {
1100 * Try to lock without sleeping. We're out of order with
1101 * the inode list lock here, so if we fail we need to drop
1102 * the mount lock and try again. If we're called from
1103 * bdflush() here, then don't bother.
1105 * The inode lock here actually coordinates with the
1106 * almost spurious inode lock in xfs_ireclaim() to prevent
1107 * the vnode we handle here without a reference from
1108 * being freed while we reference it. If we lock the inode
1109 * while it's on the mount list here, then the spurious inode
1110 * lock in xfs_ireclaim() after the inode is pulled from
1111 * the mount list will sleep until we release it here.
1112 * This keeps the vnode from being freed while we reference
1115 if (xfs_ilock_nowait(ip
, lock_flags
) == 0) {
1116 if ((flags
& SYNC_BDFLUSH
) || (vp
== NULL
)) {
1127 IPOINTER_INSERT(ip
, mp
);
1128 xfs_ilock(ip
, lock_flags
);
1130 ASSERT(vp
== XFS_ITOV(ip
));
1131 ASSERT(ip
->i_mount
== mp
);
1133 vnode_refed
= B_TRUE
;
1136 /* From here on in the loop we may have a marker record
1137 * in the inode list.
1140 if ((flags
& SYNC_CLOSE
) && (vp
!= NULL
)) {
1142 * This is the shutdown case. We just need to
1143 * flush and invalidate all the pages associated
1144 * with the inode. Drop the inode lock since
1145 * we can't hold it across calls to the buffer
1148 * We don't set the VREMAPPING bit in the vnode
1149 * here, because we don't hold the vnode lock
1150 * exclusively. It doesn't really matter, though,
1151 * because we only come here when we're shutting
1154 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
1156 if (XFS_FORCED_SHUTDOWN(mp
)) {
1157 VOP_TOSS_PAGES(vp
, 0, -1, FI_REMAPF
);
1159 VOP_FLUSHINVAL_PAGES(vp
, 0, -1, FI_REMAPF
);
1162 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
1164 } else if ((flags
& SYNC_DELWRI
) && (vp
!= NULL
)) {
1166 /* We need to have dropped the lock here,
1167 * so insert a marker if we have not already
1171 IPOINTER_INSERT(ip
, mp
);
1175 * Drop the inode lock since we can't hold it
1176 * across calls to the buffer cache.
1178 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
1179 VOP_FLUSH_PAGES(vp
, (xfs_off_t
)0, -1,
1180 fflag
, FI_NONE
, error
);
1181 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
1186 if (flags
& SYNC_BDFLUSH
) {
1187 if ((flags
& SYNC_ATTR
) &&
1188 ((ip
->i_update_core
) ||
1189 ((ip
->i_itemp
!= NULL
) &&
1190 (ip
->i_itemp
->ili_format
.ilf_fields
!= 0)))) {
1192 /* Insert marker and drop lock if not already
1196 IPOINTER_INSERT(ip
, mp
);
1200 * We don't want the periodic flushing of the
1201 * inodes by vfs_sync() to interfere with
1202 * I/O to the file, especially read I/O
1203 * where it is only the access time stamp
1204 * that is being flushed out. To prevent
1205 * long periods where we have both inode
1206 * locks held shared here while reading the
1207 * inode's buffer in from disk, we drop the
1208 * inode lock while reading in the inode
1209 * buffer. We have to release the buffer
1210 * and reacquire the inode lock so that they
1211 * are acquired in the proper order (inode
1212 * locks first). The buffer will go at the
1213 * end of the lru chain, though, so we can
1214 * expect it to still be there when we go
1215 * for it again in xfs_iflush().
1217 if ((xfs_ipincount(ip
) == 0) &&
1218 xfs_iflock_nowait(ip
)) {
1221 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
1223 error
= xfs_itobp(mp
, NULL
, ip
,
1228 /* Bailing out, remove the
1229 * marker and free it.
1231 XFS_MOUNT_ILOCK(mp
);
1233 IPOINTER_REMOVE(ip
, mp
);
1235 XFS_MOUNT_IUNLOCK(mp
);
1237 ASSERT(!(lock_flags
&
1238 XFS_IOLOCK_SHARED
));
1241 sizeof(xfs_iptr_t
));
1246 * Since we dropped the inode lock,
1247 * the inode may have been reclaimed.
1248 * Therefore, we reacquire the mount
1249 * lock and check to see if we were the
1250 * inode reclaimed. If this happened
1251 * then the ipointer marker will no
1252 * longer point back at us. In this
1253 * case, move ip along to the inode
1254 * after the marker, remove the marker
1257 XFS_MOUNT_ILOCK(mp
);
1258 mount_locked
= B_TRUE
;
1260 if (ip
!= ipointer
->ip_mprev
) {
1261 IPOINTER_REMOVE(ip
, mp
);
1263 ASSERT(!vnode_refed
);
1264 ASSERT(!(lock_flags
&
1265 XFS_IOLOCK_SHARED
));
1269 ASSERT(ip
->i_mount
== mp
);
1271 if (xfs_ilock_nowait(ip
,
1272 XFS_ILOCK_SHARED
) == 0) {
1273 ASSERT(ip
->i_mount
== mp
);
1275 * We failed to reacquire
1276 * the inode lock without
1277 * sleeping, so just skip
1278 * the inode for now. We
1279 * clear the ILOCK bit from
1280 * the lock_flags so that we
1281 * won't try to drop a lock
1282 * we don't hold below.
1284 lock_flags
&= ~XFS_ILOCK_SHARED
;
1285 IPOINTER_REMOVE(ip_next
, mp
);
1286 } else if ((xfs_ipincount(ip
) == 0) &&
1287 xfs_iflock_nowait(ip
)) {
1288 ASSERT(ip
->i_mount
== mp
);
1290 * Since this is vfs_sync()
1291 * calling we only flush the
1292 * inode out if we can lock
1293 * it without sleeping and
1294 * it is not pinned. Drop
1295 * the mount lock here so
1296 * that we don't hold it for
1297 * too long. We already have
1298 * a marker in the list here.
1300 XFS_MOUNT_IUNLOCK(mp
);
1301 mount_locked
= B_FALSE
;
1302 error
= xfs_iflush(ip
,
1305 ASSERT(ip
->i_mount
== mp
);
1306 IPOINTER_REMOVE(ip_next
, mp
);
1313 if ((flags
& SYNC_ATTR
) &&
1314 ((ip
->i_update_core
) ||
1315 ((ip
->i_itemp
!= NULL
) &&
1316 (ip
->i_itemp
->ili_format
.ilf_fields
!= 0)))) {
1318 IPOINTER_INSERT(ip
, mp
);
1321 if (flags
& SYNC_WAIT
) {
1323 error
= xfs_iflush(ip
,
1327 * If we can't acquire the flush
1328 * lock, then the inode is already
1329 * being flushed so don't bother
1330 * waiting. If we can lock it then
1331 * do a delwri flush so we can
1332 * combine multiple inode flushes
1333 * in each disk write.
1335 if (xfs_iflock_nowait(ip
)) {
1336 error
= xfs_iflush(ip
,
1345 if (lock_flags
!= 0) {
1346 xfs_iunlock(ip
, lock_flags
);
1351 * If we had to take a reference on the vnode
1352 * above, then wait until after we've unlocked
1353 * the inode to release the reference. This is
1354 * because we can be already holding the inode
1355 * lock when VN_RELE() calls xfs_inactive().
1357 * Make sure to drop the mount lock before calling
1358 * VN_RELE() so that we don't trip over ourselves if
1359 * we have to go for the mount lock again in the
1363 IPOINTER_INSERT(ip
, mp
);
1368 vnode_refed
= B_FALSE
;
1376 * bail out if the filesystem is corrupted.
1378 if (error
== EFSCORRUPTED
) {
1379 if (!mount_locked
) {
1380 XFS_MOUNT_ILOCK(mp
);
1381 IPOINTER_REMOVE(ip
, mp
);
1383 XFS_MOUNT_IUNLOCK(mp
);
1384 ASSERT(ipointer_in
== B_FALSE
);
1385 kmem_free(ipointer
, sizeof(xfs_iptr_t
));
1386 return XFS_ERROR(error
);
1389 /* Let other threads have a chance at the mount lock
1390 * if we have looped many times without dropping the
1393 if ((++preempt
& XFS_PREEMPT_MASK
) == 0) {
1395 IPOINTER_INSERT(ip
, mp
);
1399 if (mount_locked
== B_FALSE
) {
1400 XFS_MOUNT_ILOCK(mp
);
1401 mount_locked
= B_TRUE
;
1402 IPOINTER_REMOVE(ip
, mp
);
1406 ASSERT(ipointer_in
== B_FALSE
);
1409 } while (ip
!= mp
->m_inodes
);
1411 XFS_MOUNT_IUNLOCK(mp
);
1413 ASSERT(ipointer_in
== B_FALSE
);
1415 kmem_free(ipointer
, sizeof(xfs_iptr_t
));
1416 return XFS_ERROR(last_error
);
1420 * xfs sync routine for internal use
1422 * This routine supports all of the flags defined for the generic VFS_SYNC
1423 * interface as explained above under xfs_sync. In the interests of not
1424 * changing interfaces within the 6.5 family, additional internallly-
1425 * required functions are specified within a separate xflags parameter,
1426 * only available by calling this routine.
1438 uint log_flags
= XFS_LOG_FORCE
;
1440 xfs_buf_log_item_t
*bip
;
1443 * Sync out the log. This ensures that the log is periodically
1444 * flushed even if there is not enough activity to fill it up.
1446 if (flags
& SYNC_WAIT
)
1447 log_flags
|= XFS_LOG_SYNC
;
1449 xfs_log_force(mp
, (xfs_lsn_t
)0, log_flags
);
1451 if (flags
& (SYNC_ATTR
|SYNC_DELWRI
)) {
1452 if (flags
& SYNC_BDFLUSH
)
1453 xfs_finish_reclaim_all(mp
, 1);
1455 error
= xfs_sync_inodes(mp
, flags
, xflags
, bypassed
);
1459 * Flushing out dirty data above probably generated more
1460 * log activity, so if this isn't vfs_sync() then flush
1463 if (flags
& SYNC_DELWRI
) {
1464 xfs_log_force(mp
, (xfs_lsn_t
)0, log_flags
);
1467 if (flags
& SYNC_FSDATA
) {
1469 * If this is vfs_sync() then only sync the superblock
1470 * if we can lock it without sleeping and it is not pinned.
1472 if (flags
& SYNC_BDFLUSH
) {
1473 bp
= xfs_getsb(mp
, XFS_BUF_TRYLOCK
);
1475 bip
= XFS_BUF_FSPRIVATE(bp
,xfs_buf_log_item_t
*);
1476 if ((bip
!= NULL
) &&
1477 xfs_buf_item_dirty(bip
)) {
1478 if (!(XFS_BUF_ISPINNED(bp
))) {
1480 error
= xfs_bwrite(mp
, bp
);
1489 bp
= xfs_getsb(mp
, 0);
1491 * If the buffer is pinned then push on the log so
1492 * we won't get stuck waiting in the write for
1493 * someone, maybe ourselves, to flush the log.
1494 * Even though we just pushed the log above, we
1495 * did not have the superblock buffer locked at
1496 * that point so it can become pinned in between
1499 if (XFS_BUF_ISPINNED(bp
))
1500 xfs_log_force(mp
, (xfs_lsn_t
)0, XFS_LOG_FORCE
);
1501 if (flags
& SYNC_WAIT
)
1502 XFS_BUF_UNASYNC(bp
);
1505 error
= xfs_bwrite(mp
, bp
);
1513 * If this is the periodic sync, then kick some entries out of
1514 * the reference cache. This ensures that idle entries are
1515 * eventually kicked out of the cache.
1517 if (flags
& SYNC_REFCACHE
) {
1518 if (flags
& SYNC_WAIT
)
1519 xfs_refcache_purge_mp(mp
);
1521 xfs_refcache_purge_some(mp
);
1525 * Now check to see if the log needs a "dummy" transaction.
1528 if (!(flags
& SYNC_REMOUNT
) && xfs_log_need_covered(mp
)) {
1533 * Put a dummy transaction in the log to tell
1534 * recovery that all others are OK.
1536 tp
= xfs_trans_alloc(mp
, XFS_TRANS_DUMMY1
);
1537 if ((error
= xfs_trans_reserve(tp
, 0,
1538 XFS_ICHANGE_LOG_RES(mp
),
1540 xfs_trans_cancel(tp
, 0);
1545 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
1547 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
1548 xfs_trans_ihold(tp
, ip
);
1549 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
1550 error
= xfs_trans_commit(tp
, 0, NULL
);
1551 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1552 xfs_log_force(mp
, (xfs_lsn_t
)0, log_flags
);
1556 * When shutting down, we need to insure that the AIL is pushed
1557 * to disk or the filesystem can appear corrupt from the PROM.
1559 if ((flags
& (SYNC_CLOSE
|SYNC_WAIT
)) == (SYNC_CLOSE
|SYNC_WAIT
)) {
1560 XFS_bflush(mp
->m_ddev_targp
);
1561 if (mp
->m_rtdev_targp
) {
1562 XFS_bflush(mp
->m_rtdev_targp
);
1566 return XFS_ERROR(last_error
);
1570 * xfs_vget - called by DMAPI and NFSD to get vnode from file handle
1578 xfs_mount_t
*mp
= XFS_BHVTOM(bdp
);
1579 xfs_fid_t
*xfid
= (struct xfs_fid
*)fidp
;
1586 * Invalid. Since handles can be created in user space and passed in
1587 * via gethandle(), this is not cause for a panic.
1589 if (xfid
->xfs_fid_len
!= sizeof(*xfid
) - sizeof(xfid
->xfs_fid_len
))
1590 return XFS_ERROR(EINVAL
);
1592 ino
= xfid
->xfs_fid_ino
;
1593 igen
= xfid
->xfs_fid_gen
;
1596 * NFS can sometimes send requests for ino 0. Fail them gracefully.
1599 return XFS_ERROR(ESTALE
);
1601 error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_SHARED
, &ip
, 0);
1609 return XFS_ERROR(EIO
);
1612 if (ip
->i_d
.di_mode
== 0 || ip
->i_d
.di_gen
!= igen
) {
1613 xfs_iput_new(ip
, XFS_ILOCK_SHARED
);
1615 return XFS_ERROR(ENOENT
);
1618 *vpp
= XFS_ITOV(ip
);
1619 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
1624 #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
1625 #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
1626 #define MNTOPT_LOGDEV "logdev" /* log device */
1627 #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
1628 #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
1629 #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
1630 #define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */
1631 #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
1632 #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */
1633 #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
1634 #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
1635 #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
1636 #define MNTOPT_MTPT "mtpt" /* filesystem mount point */
1637 #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */
1638 #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */
1639 #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */
1640 #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */
1641 #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */
1642 #define MNTOPT_IHASHSIZE "ihashsize" /* size of inode hash table */
1643 #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
1644 #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
1645 * unwritten extent conversion */
1646 #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */
1647 #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
1648 #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
1649 #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
1650 #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
1651 #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
1652 #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes
1654 #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
1655 #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
1657 STATIC
unsigned long
1658 suffix_strtoul(const char *cp
, char **endp
, unsigned int base
)
1660 int last
, shift_left_factor
= 0;
1661 char *value
= (char *)cp
;
1663 last
= strlen(value
) - 1;
1664 if (value
[last
] == 'K' || value
[last
] == 'k') {
1665 shift_left_factor
= 10;
1668 if (value
[last
] == 'M' || value
[last
] == 'm') {
1669 shift_left_factor
= 20;
1672 if (value
[last
] == 'G' || value
[last
] == 'g') {
1673 shift_left_factor
= 30;
1677 return simple_strtoul(cp
, endp
, base
) << shift_left_factor
;
1682 struct bhv_desc
*bhv
,
1684 struct xfs_mount_args
*args
,
1687 struct vfs
*vfsp
= bhvtovfs(bhv
);
1688 char *this_char
, *value
, *eov
;
1689 int dsunit
, dswidth
, vol_dsunit
, vol_dswidth
;
1692 args
->flags2
|= XFSMNT2_COMPAT_IOSIZE
;
1694 #if 0 /* XXX: off by default, until some remaining issues ironed out */
1695 args
->flags
|= XFSMNT_IDELETE
; /* default to on */
1701 iosize
= dsunit
= dswidth
= vol_dsunit
= vol_dswidth
= 0;
1703 while ((this_char
= strsep(&options
, ",")) != NULL
) {
1706 if ((value
= strchr(this_char
, '=')) != NULL
)
1709 if (!strcmp(this_char
, MNTOPT_LOGBUFS
)) {
1710 if (!value
|| !*value
) {
1711 printk("XFS: %s option requires an argument\n",
1715 args
->logbufs
= simple_strtoul(value
, &eov
, 10);
1716 } else if (!strcmp(this_char
, MNTOPT_LOGBSIZE
)) {
1717 if (!value
|| !*value
) {
1718 printk("XFS: %s option requires an argument\n",
1722 args
->logbufsize
= suffix_strtoul(value
, &eov
, 10);
1723 } else if (!strcmp(this_char
, MNTOPT_LOGDEV
)) {
1724 if (!value
|| !*value
) {
1725 printk("XFS: %s option requires an argument\n",
1729 strncpy(args
->logname
, value
, MAXNAMELEN
);
1730 } else if (!strcmp(this_char
, MNTOPT_MTPT
)) {
1731 if (!value
|| !*value
) {
1732 printk("XFS: %s option requires an argument\n",
1736 strncpy(args
->mtpt
, value
, MAXNAMELEN
);
1737 } else if (!strcmp(this_char
, MNTOPT_RTDEV
)) {
1738 if (!value
|| !*value
) {
1739 printk("XFS: %s option requires an argument\n",
1743 strncpy(args
->rtname
, value
, MAXNAMELEN
);
1744 } else if (!strcmp(this_char
, MNTOPT_BIOSIZE
)) {
1745 if (!value
|| !*value
) {
1746 printk("XFS: %s option requires an argument\n",
1750 iosize
= simple_strtoul(value
, &eov
, 10);
1751 args
->flags
|= XFSMNT_IOSIZE
;
1752 args
->iosizelog
= (uint8_t) iosize
;
1753 } else if (!strcmp(this_char
, MNTOPT_ALLOCSIZE
)) {
1754 if (!value
|| !*value
) {
1755 printk("XFS: %s option requires an argument\n",
1759 iosize
= suffix_strtoul(value
, &eov
, 10);
1760 args
->flags
|= XFSMNT_IOSIZE
;
1761 args
->iosizelog
= ffs(iosize
) - 1;
1762 } else if (!strcmp(this_char
, MNTOPT_IHASHSIZE
)) {
1763 if (!value
|| !*value
) {
1764 printk("XFS: %s option requires an argument\n",
1768 args
->flags
|= XFSMNT_IHASHSIZE
;
1769 args
->ihashsize
= simple_strtoul(value
, &eov
, 10);
1770 } else if (!strcmp(this_char
, MNTOPT_GRPID
) ||
1771 !strcmp(this_char
, MNTOPT_BSDGROUPS
)) {
1772 vfsp
->vfs_flag
|= VFS_GRPID
;
1773 } else if (!strcmp(this_char
, MNTOPT_NOGRPID
) ||
1774 !strcmp(this_char
, MNTOPT_SYSVGROUPS
)) {
1775 vfsp
->vfs_flag
&= ~VFS_GRPID
;
1776 } else if (!strcmp(this_char
, MNTOPT_WSYNC
)) {
1777 args
->flags
|= XFSMNT_WSYNC
;
1778 } else if (!strcmp(this_char
, MNTOPT_OSYNCISOSYNC
)) {
1779 args
->flags
|= XFSMNT_OSYNCISOSYNC
;
1780 } else if (!strcmp(this_char
, MNTOPT_NORECOVERY
)) {
1781 args
->flags
|= XFSMNT_NORECOVERY
;
1782 } else if (!strcmp(this_char
, MNTOPT_INO64
)) {
1783 args
->flags
|= XFSMNT_INO64
;
1785 printk("XFS: %s option not allowed on this system\n",
1789 } else if (!strcmp(this_char
, MNTOPT_NOALIGN
)) {
1790 args
->flags
|= XFSMNT_NOALIGN
;
1791 } else if (!strcmp(this_char
, MNTOPT_SWALLOC
)) {
1792 args
->flags
|= XFSMNT_SWALLOC
;
1793 } else if (!strcmp(this_char
, MNTOPT_SUNIT
)) {
1794 if (!value
|| !*value
) {
1795 printk("XFS: %s option requires an argument\n",
1799 dsunit
= simple_strtoul(value
, &eov
, 10);
1800 } else if (!strcmp(this_char
, MNTOPT_SWIDTH
)) {
1801 if (!value
|| !*value
) {
1802 printk("XFS: %s option requires an argument\n",
1806 dswidth
= simple_strtoul(value
, &eov
, 10);
1807 } else if (!strcmp(this_char
, MNTOPT_64BITINODE
)) {
1808 args
->flags
&= ~XFSMNT_32BITINODES
;
1810 printk("XFS: %s option not allowed on this system\n",
1814 } else if (!strcmp(this_char
, MNTOPT_NOUUID
)) {
1815 args
->flags
|= XFSMNT_NOUUID
;
1816 } else if (!strcmp(this_char
, MNTOPT_BARRIER
)) {
1817 args
->flags
|= XFSMNT_BARRIER
;
1818 } else if (!strcmp(this_char
, MNTOPT_NOBARRIER
)) {
1819 args
->flags
&= ~XFSMNT_BARRIER
;
1820 } else if (!strcmp(this_char
, MNTOPT_IKEEP
)) {
1821 args
->flags
&= ~XFSMNT_IDELETE
;
1822 } else if (!strcmp(this_char
, MNTOPT_NOIKEEP
)) {
1823 args
->flags
|= XFSMNT_IDELETE
;
1824 } else if (!strcmp(this_char
, MNTOPT_LARGEIO
)) {
1825 args
->flags2
&= ~XFSMNT2_COMPAT_IOSIZE
;
1826 } else if (!strcmp(this_char
, MNTOPT_NOLARGEIO
)) {
1827 args
->flags2
|= XFSMNT2_COMPAT_IOSIZE
;
1828 } else if (!strcmp(this_char
, MNTOPT_ATTR2
)) {
1829 args
->flags
|= XFSMNT_ATTR2
;
1830 } else if (!strcmp(this_char
, MNTOPT_NOATTR2
)) {
1831 args
->flags
&= ~XFSMNT_ATTR2
;
1832 } else if (!strcmp(this_char
, "osyncisdsync")) {
1833 /* no-op, this is now the default */
1834 printk("XFS: osyncisdsync is now the default, option is deprecated.\n");
1835 } else if (!strcmp(this_char
, "irixsgid")) {
1836 printk("XFS: irixsgid is now a sysctl(2) variable, option is deprecated.\n");
1838 printk("XFS: unknown mount option [%s].\n", this_char
);
1843 if (args
->flags
& XFSMNT_NORECOVERY
) {
1844 if ((vfsp
->vfs_flag
& VFS_RDONLY
) == 0) {
1845 printk("XFS: no-recovery mounts must be read-only.\n");
1850 if ((args
->flags
& XFSMNT_NOALIGN
) && (dsunit
|| dswidth
)) {
1852 "XFS: sunit and swidth options incompatible with the noalign option\n");
1856 if ((dsunit
&& !dswidth
) || (!dsunit
&& dswidth
)) {
1857 printk("XFS: sunit and swidth must be specified together\n");
1861 if (dsunit
&& (dswidth
% dsunit
!= 0)) {
1863 "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)\n",
1868 if ((args
->flags
& XFSMNT_NOALIGN
) != XFSMNT_NOALIGN
) {
1870 args
->sunit
= dsunit
;
1871 args
->flags
|= XFSMNT_RETERR
;
1873 args
->sunit
= vol_dsunit
;
1875 dswidth
? (args
->swidth
= dswidth
) :
1876 (args
->swidth
= vol_dswidth
);
1878 args
->sunit
= args
->swidth
= 0;
1882 if (args
->flags
& XFSMNT_32BITINODES
)
1883 vfsp
->vfs_flag
|= VFS_32BITINODES
;
1885 args
->flags
|= XFSMNT_FLAGS2
;
1891 struct bhv_desc
*bhv
,
1894 static struct proc_xfs_info
{
1898 /* the few simple ones we can get from the mount struct */
1899 { XFS_MOUNT_WSYNC
, "," MNTOPT_WSYNC
},
1900 { XFS_MOUNT_INO64
, "," MNTOPT_INO64
},
1901 { XFS_MOUNT_NOALIGN
, "," MNTOPT_NOALIGN
},
1902 { XFS_MOUNT_SWALLOC
, "," MNTOPT_SWALLOC
},
1903 { XFS_MOUNT_NOUUID
, "," MNTOPT_NOUUID
},
1904 { XFS_MOUNT_NORECOVERY
, "," MNTOPT_NORECOVERY
},
1905 { XFS_MOUNT_OSYNCISOSYNC
, "," MNTOPT_OSYNCISOSYNC
},
1906 { XFS_MOUNT_IDELETE
, "," MNTOPT_NOIKEEP
},
1909 struct proc_xfs_info
*xfs_infop
;
1910 struct xfs_mount
*mp
= XFS_BHVTOM(bhv
);
1911 struct vfs
*vfsp
= XFS_MTOVFS(mp
);
1913 for (xfs_infop
= xfs_info
; xfs_infop
->flag
; xfs_infop
++) {
1914 if (mp
->m_flags
& xfs_infop
->flag
)
1915 seq_puts(m
, xfs_infop
->str
);
1918 if (mp
->m_flags
& XFS_MOUNT_IHASHSIZE
)
1919 seq_printf(m
, "," MNTOPT_IHASHSIZE
"=%d", mp
->m_ihsize
);
1921 if (mp
->m_flags
& XFS_MOUNT_DFLT_IOSIZE
)
1922 seq_printf(m
, "," MNTOPT_ALLOCSIZE
"=%dk",
1923 (int)(1 << mp
->m_writeio_log
) >> 10);
1925 if (mp
->m_logbufs
> 0)
1926 seq_printf(m
, "," MNTOPT_LOGBUFS
"=%d", mp
->m_logbufs
);
1927 if (mp
->m_logbsize
> 0)
1928 seq_printf(m
, "," MNTOPT_LOGBSIZE
"=%dk", mp
->m_logbsize
>> 10);
1931 seq_printf(m
, "," MNTOPT_LOGDEV
"=%s", mp
->m_logname
);
1933 seq_printf(m
, "," MNTOPT_RTDEV
"=%s", mp
->m_rtname
);
1935 if (mp
->m_dalign
> 0)
1936 seq_printf(m
, "," MNTOPT_SUNIT
"=%d",
1937 (int)XFS_FSB_TO_BB(mp
, mp
->m_dalign
));
1938 if (mp
->m_swidth
> 0)
1939 seq_printf(m
, "," MNTOPT_SWIDTH
"=%d",
1940 (int)XFS_FSB_TO_BB(mp
, mp
->m_swidth
));
1942 if (!(mp
->m_flags
& XFS_MOUNT_COMPAT_IOSIZE
))
1943 seq_printf(m
, "," MNTOPT_LARGEIO
);
1944 if (mp
->m_flags
& XFS_MOUNT_BARRIER
)
1945 seq_printf(m
, "," MNTOPT_BARRIER
);
1947 if (!(vfsp
->vfs_flag
& VFS_32BITINODES
))
1948 seq_printf(m
, "," MNTOPT_64BITINODE
);
1949 if (vfsp
->vfs_flag
& VFS_GRPID
)
1950 seq_printf(m
, "," MNTOPT_GRPID
);
1959 xfs_mount_t
*mp
= XFS_BHVTOM(bdp
);
1961 while (atomic_read(&mp
->m_active_trans
) > 0)
1964 /* Push the superblock and write an unmount record */
1965 xfs_log_unmount_write(mp
);
1966 xfs_unmountfs_writesb(mp
);
1967 xfs_fs_log_dummy(mp
);
1971 vfsops_t xfs_vfsops
= {
1972 BHV_IDENTITY_INIT(VFS_BHV_XFS
,VFS_POSITION_XFS
),
1973 .vfs_parseargs
= xfs_parseargs
,
1974 .vfs_showargs
= xfs_showargs
,
1975 .vfs_mount
= xfs_mount
,
1976 .vfs_unmount
= xfs_unmount
,
1977 .vfs_mntupdate
= xfs_mntupdate
,
1978 .vfs_root
= xfs_root
,
1979 .vfs_statvfs
= xfs_statvfs
,
1980 .vfs_sync
= xfs_sync
,
1981 .vfs_vget
= xfs_vget
,
1982 .vfs_dmapiops
= (vfs_dmapiops_t
)fs_nosys
,
1983 .vfs_quotactl
= (vfs_quotactl_t
)fs_nosys
,
1984 .vfs_init_vnode
= xfs_initialize_vnode
,
1985 .vfs_force_shutdown
= xfs_do_force_shutdown
,
1986 .vfs_freeze
= xfs_freeze
,