Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
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. | |
1da177e4 | 13 | * |
7b718769 NS |
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 | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
a844f451 | 19 | #include "xfs_fs.h" |
1da177e4 | 20 | #include "xfs_types.h" |
a844f451 | 21 | #include "xfs_bit.h" |
1da177e4 | 22 | #include "xfs_log.h" |
a844f451 | 23 | #include "xfs_inum.h" |
1da177e4 LT |
24 | #include "xfs_trans.h" |
25 | #include "xfs_sb.h" | |
a844f451 | 26 | #include "xfs_ag.h" |
1da177e4 LT |
27 | #include "xfs_dir2.h" |
28 | #include "xfs_dmapi.h" | |
29 | #include "xfs_mount.h" | |
a844f451 | 30 | #include "xfs_da_btree.h" |
1da177e4 LT |
31 | #include "xfs_bmap_btree.h" |
32 | #include "xfs_ialloc_btree.h" | |
33 | #include "xfs_alloc_btree.h" | |
1da177e4 | 34 | #include "xfs_dir2_sf.h" |
a844f451 | 35 | #include "xfs_attr_sf.h" |
1da177e4 | 36 | #include "xfs_dinode.h" |
1da177e4 | 37 | #include "xfs_inode.h" |
a844f451 NS |
38 | #include "xfs_inode_item.h" |
39 | #include "xfs_btree.h" | |
40 | #include "xfs_alloc.h" | |
41 | #include "xfs_ialloc.h" | |
42 | #include "xfs_quota.h" | |
1da177e4 LT |
43 | #include "xfs_error.h" |
44 | #include "xfs_bmap.h" | |
1da177e4 LT |
45 | #include "xfs_rw.h" |
46 | #include "xfs_refcache.h" | |
47 | #include "xfs_buf_item.h" | |
a844f451 | 48 | #include "xfs_log_priv.h" |
1da177e4 | 49 | #include "xfs_dir2_trace.h" |
a844f451 | 50 | #include "xfs_extfree_item.h" |
1da177e4 LT |
51 | #include "xfs_acl.h" |
52 | #include "xfs_attr.h" | |
53 | #include "xfs_clnt.h" | |
2a82b8be DC |
54 | #include "xfs_mru_cache.h" |
55 | #include "xfs_filestream.h" | |
e13a73f0 | 56 | #include "xfs_fsops.h" |
1da177e4 | 57 | |
8d280b98 | 58 | STATIC int xfs_sync(bhv_desc_t *, int, cred_t *); |
1da177e4 LT |
59 | |
60 | int | |
61 | xfs_init(void) | |
62 | { | |
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"); | |
71 | #endif | |
72 | ||
73 | /* | |
74 | * Initialize all of the zone allocators we use. | |
75 | */ | |
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), | |
79 | "xfs_btree_cur"); | |
1da177e4 LT |
80 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); |
81 | xfs_da_state_zone = | |
82 | kmem_zone_init(sizeof(xfs_da_state_t), "xfs_da_state"); | |
83 | xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
8758280f NS |
84 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
85 | xfs_acl_zone_init(xfs_acl_zone, "xfs_acl"); | |
2a82b8be DC |
86 | xfs_mru_cache_init(); |
87 | xfs_filestream_init(); | |
1da177e4 LT |
88 | |
89 | /* | |
90 | * The size of the zone allocated buf log item is the maximum | |
91 | * size possible under XFS. This wastes a little bit of memory, | |
92 | * but it is much faster. | |
93 | */ | |
94 | xfs_buf_item_zone = | |
95 | kmem_zone_init((sizeof(xfs_buf_log_item_t) + | |
96 | (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) / | |
97 | NBWORD) * sizeof(int))), | |
98 | "xfs_buf_item"); | |
8758280f NS |
99 | xfs_efd_zone = |
100 | kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
101 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
102 | sizeof(xfs_extent_t))), | |
1da177e4 | 103 | "xfs_efd_item"); |
8758280f NS |
104 | xfs_efi_zone = |
105 | kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
106 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
107 | sizeof(xfs_extent_t))), | |
1da177e4 | 108 | "xfs_efi_item"); |
8758280f NS |
109 | |
110 | /* | |
111 | * These zones warrant special memory allocator hints | |
112 | */ | |
113 | xfs_inode_zone = | |
114 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
115 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | | |
116 | KM_ZONE_SPREAD, NULL); | |
117 | xfs_ili_zone = | |
118 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
119 | KM_ZONE_SPREAD, NULL); | |
120 | xfs_chashlist_zone = | |
121 | kmem_zone_init_flags(sizeof(xfs_chashlist_t), "xfs_chashlist", | |
122 | KM_ZONE_SPREAD, NULL); | |
1da177e4 LT |
123 | |
124 | /* | |
125 | * Allocate global trace buffers. | |
126 | */ | |
127 | #ifdef XFS_ALLOC_TRACE | |
128 | xfs_alloc_trace_buf = ktrace_alloc(XFS_ALLOC_TRACE_SIZE, KM_SLEEP); | |
129 | #endif | |
130 | #ifdef XFS_BMAP_TRACE | |
131 | xfs_bmap_trace_buf = ktrace_alloc(XFS_BMAP_TRACE_SIZE, KM_SLEEP); | |
132 | #endif | |
133 | #ifdef XFS_BMBT_TRACE | |
134 | xfs_bmbt_trace_buf = ktrace_alloc(XFS_BMBT_TRACE_SIZE, KM_SLEEP); | |
135 | #endif | |
1da177e4 LT |
136 | #ifdef XFS_ATTR_TRACE |
137 | xfs_attr_trace_buf = ktrace_alloc(XFS_ATTR_TRACE_SIZE, KM_SLEEP); | |
138 | #endif | |
139 | #ifdef XFS_DIR2_TRACE | |
140 | xfs_dir2_trace_buf = ktrace_alloc(XFS_DIR2_GTRACE_SIZE, KM_SLEEP); | |
141 | #endif | |
142 | ||
143 | xfs_dir_startup(); | |
144 | ||
145 | #if (defined(DEBUG) || defined(INDUCE_IO_ERROR)) | |
146 | xfs_error_test_init(); | |
147 | #endif /* DEBUG || INDUCE_IO_ERROR */ | |
148 | ||
149 | xfs_init_procfs(); | |
150 | xfs_sysctl_register(); | |
151 | return 0; | |
152 | } | |
153 | ||
154 | void | |
155 | xfs_cleanup(void) | |
156 | { | |
157 | extern kmem_zone_t *xfs_bmap_free_item_zone; | |
158 | extern kmem_zone_t *xfs_btree_cur_zone; | |
159 | extern kmem_zone_t *xfs_inode_zone; | |
160 | extern kmem_zone_t *xfs_trans_zone; | |
161 | extern kmem_zone_t *xfs_da_state_zone; | |
162 | extern kmem_zone_t *xfs_dabuf_zone; | |
163 | extern kmem_zone_t *xfs_efd_zone; | |
164 | extern kmem_zone_t *xfs_efi_zone; | |
165 | extern kmem_zone_t *xfs_buf_item_zone; | |
166 | extern kmem_zone_t *xfs_chashlist_zone; | |
167 | ||
168 | xfs_cleanup_procfs(); | |
169 | xfs_sysctl_unregister(); | |
170 | xfs_refcache_destroy(); | |
2a82b8be DC |
171 | xfs_filestream_uninit(); |
172 | xfs_mru_cache_uninit(); | |
1da177e4 LT |
173 | xfs_acl_zone_destroy(xfs_acl_zone); |
174 | ||
175 | #ifdef XFS_DIR2_TRACE | |
176 | ktrace_free(xfs_dir2_trace_buf); | |
177 | #endif | |
178 | #ifdef XFS_ATTR_TRACE | |
179 | ktrace_free(xfs_attr_trace_buf); | |
180 | #endif | |
1da177e4 LT |
181 | #ifdef XFS_BMBT_TRACE |
182 | ktrace_free(xfs_bmbt_trace_buf); | |
183 | #endif | |
184 | #ifdef XFS_BMAP_TRACE | |
185 | ktrace_free(xfs_bmap_trace_buf); | |
186 | #endif | |
187 | #ifdef XFS_ALLOC_TRACE | |
188 | ktrace_free(xfs_alloc_trace_buf); | |
189 | #endif | |
190 | ||
3758dee9 NS |
191 | kmem_zone_destroy(xfs_bmap_free_item_zone); |
192 | kmem_zone_destroy(xfs_btree_cur_zone); | |
193 | kmem_zone_destroy(xfs_inode_zone); | |
194 | kmem_zone_destroy(xfs_trans_zone); | |
195 | kmem_zone_destroy(xfs_da_state_zone); | |
196 | kmem_zone_destroy(xfs_dabuf_zone); | |
197 | kmem_zone_destroy(xfs_buf_item_zone); | |
198 | kmem_zone_destroy(xfs_efd_zone); | |
199 | kmem_zone_destroy(xfs_efi_zone); | |
200 | kmem_zone_destroy(xfs_ifork_zone); | |
201 | kmem_zone_destroy(xfs_ili_zone); | |
202 | kmem_zone_destroy(xfs_chashlist_zone); | |
1da177e4 LT |
203 | } |
204 | ||
205 | /* | |
206 | * xfs_start_flags | |
207 | * | |
208 | * This function fills in xfs_mount_t fields based on mount args. | |
209 | * Note: the superblock has _not_ yet been read in. | |
210 | */ | |
211 | STATIC int | |
212 | xfs_start_flags( | |
b83bd138 | 213 | struct bhv_vfs *vfs, |
1da177e4 LT |
214 | struct xfs_mount_args *ap, |
215 | struct xfs_mount *mp) | |
216 | { | |
217 | /* Values are in BBs */ | |
218 | if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) { | |
219 | /* | |
220 | * At this point the superblock has not been read | |
221 | * in, therefore we do not know the block size. | |
222 | * Before the mount call ends we will convert | |
223 | * these to FSBs. | |
224 | */ | |
225 | mp->m_dalign = ap->sunit; | |
226 | mp->m_swidth = ap->swidth; | |
227 | } | |
228 | ||
229 | if (ap->logbufs != -1 && | |
1da177e4 | 230 | ap->logbufs != 0 && |
1da177e4 LT |
231 | (ap->logbufs < XLOG_MIN_ICLOGS || |
232 | ap->logbufs > XLOG_MAX_ICLOGS)) { | |
233 | cmn_err(CE_WARN, | |
234 | "XFS: invalid logbufs value: %d [not %d-%d]", | |
235 | ap->logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); | |
236 | return XFS_ERROR(EINVAL); | |
237 | } | |
238 | mp->m_logbufs = ap->logbufs; | |
239 | if (ap->logbufsize != -1 && | |
cfcbbbd0 | 240 | ap->logbufsize != 0 && |
1da177e4 LT |
241 | ap->logbufsize != 16 * 1024 && |
242 | ap->logbufsize != 32 * 1024 && | |
243 | ap->logbufsize != 64 * 1024 && | |
244 | ap->logbufsize != 128 * 1024 && | |
245 | ap->logbufsize != 256 * 1024) { | |
246 | cmn_err(CE_WARN, | |
247 | "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
248 | ap->logbufsize); | |
249 | return XFS_ERROR(EINVAL); | |
250 | } | |
251 | mp->m_ihsize = ap->ihashsize; | |
252 | mp->m_logbsize = ap->logbufsize; | |
253 | mp->m_fsname_len = strlen(ap->fsname) + 1; | |
254 | mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP); | |
255 | strcpy(mp->m_fsname, ap->fsname); | |
fc1f8c1c NS |
256 | if (ap->rtname[0]) { |
257 | mp->m_rtname = kmem_alloc(strlen(ap->rtname) + 1, KM_SLEEP); | |
258 | strcpy(mp->m_rtname, ap->rtname); | |
259 | } | |
260 | if (ap->logname[0]) { | |
261 | mp->m_logname = kmem_alloc(strlen(ap->logname) + 1, KM_SLEEP); | |
262 | strcpy(mp->m_logname, ap->logname); | |
263 | } | |
1da177e4 LT |
264 | |
265 | if (ap->flags & XFSMNT_WSYNC) | |
266 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
267 | #if XFS_BIG_INUMS | |
268 | if (ap->flags & XFSMNT_INO64) { | |
269 | mp->m_flags |= XFS_MOUNT_INO64; | |
270 | mp->m_inoadd = XFS_INO64_OFFSET; | |
271 | } | |
272 | #endif | |
1da177e4 LT |
273 | if (ap->flags & XFSMNT_RETERR) |
274 | mp->m_flags |= XFS_MOUNT_RETERR; | |
1da177e4 LT |
275 | if (ap->flags & XFSMNT_NOALIGN) |
276 | mp->m_flags |= XFS_MOUNT_NOALIGN; | |
1da177e4 LT |
277 | if (ap->flags & XFSMNT_SWALLOC) |
278 | mp->m_flags |= XFS_MOUNT_SWALLOC; | |
1da177e4 LT |
279 | if (ap->flags & XFSMNT_OSYNCISOSYNC) |
280 | mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC; | |
1da177e4 | 281 | if (ap->flags & XFSMNT_32BITINODES) |
c11e2c36 | 282 | mp->m_flags |= XFS_MOUNT_32BITINODES; |
1da177e4 LT |
283 | |
284 | if (ap->flags & XFSMNT_IOSIZE) { | |
285 | if (ap->iosizelog > XFS_MAX_IO_LOG || | |
286 | ap->iosizelog < XFS_MIN_IO_LOG) { | |
287 | cmn_err(CE_WARN, | |
288 | "XFS: invalid log iosize: %d [not %d-%d]", | |
289 | ap->iosizelog, XFS_MIN_IO_LOG, | |
290 | XFS_MAX_IO_LOG); | |
291 | return XFS_ERROR(EINVAL); | |
292 | } | |
293 | ||
294 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
295 | mp->m_readio_log = mp->m_writeio_log = ap->iosizelog; | |
296 | } | |
297 | ||
298 | if (ap->flags & XFSMNT_IHASHSIZE) | |
299 | mp->m_flags |= XFS_MOUNT_IHASHSIZE; | |
1da177e4 LT |
300 | if (ap->flags & XFSMNT_IDELETE) |
301 | mp->m_flags |= XFS_MOUNT_IDELETE; | |
1da177e4 LT |
302 | if (ap->flags & XFSMNT_DIRSYNC) |
303 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
13059ff0 NS |
304 | if (ap->flags & XFSMNT_ATTR2) |
305 | mp->m_flags |= XFS_MOUNT_ATTR2; | |
e8c8b3a7 | 306 | |
e718eeb4 NS |
307 | if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE) |
308 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
309 | ||
1da177e4 LT |
310 | /* |
311 | * no recovery flag requires a read-only mount | |
312 | */ | |
313 | if (ap->flags & XFSMNT_NORECOVERY) { | |
314 | if (!(vfs->vfs_flag & VFS_RDONLY)) { | |
315 | cmn_err(CE_WARN, | |
316 | "XFS: tried to mount a FS read-write without recovery!"); | |
317 | return XFS_ERROR(EINVAL); | |
318 | } | |
319 | mp->m_flags |= XFS_MOUNT_NORECOVERY; | |
320 | } | |
321 | ||
322 | if (ap->flags & XFSMNT_NOUUID) | |
323 | mp->m_flags |= XFS_MOUNT_NOUUID; | |
f538d4da CH |
324 | if (ap->flags & XFSMNT_BARRIER) |
325 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
4ef19ddd CH |
326 | else |
327 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
1da177e4 | 328 | |
2a82b8be DC |
329 | if (ap->flags2 & XFSMNT2_FILESTREAMS) |
330 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; | |
331 | ||
1da177e4 LT |
332 | return 0; |
333 | } | |
334 | ||
335 | /* | |
336 | * This function fills in xfs_mount_t fields based on mount args. | |
337 | * Note: the superblock _has_ now been read in. | |
338 | */ | |
339 | STATIC int | |
340 | xfs_finish_flags( | |
b83bd138 | 341 | struct bhv_vfs *vfs, |
1da177e4 LT |
342 | struct xfs_mount_args *ap, |
343 | struct xfs_mount *mp) | |
344 | { | |
345 | int ronly = (vfs->vfs_flag & VFS_RDONLY); | |
346 | ||
347 | /* Fail a mount where the logbuf is smaller then the log stripe */ | |
348 | if (XFS_SB_VERSION_HASLOGV2(&mp->m_sb)) { | |
c2cd2550 | 349 | if ((ap->logbufsize <= 0) && |
1da177e4 LT |
350 | (mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) { |
351 | mp->m_logbsize = mp->m_sb.sb_logsunit; | |
c2cd2550 NS |
352 | } else if (ap->logbufsize > 0 && |
353 | ap->logbufsize < mp->m_sb.sb_logsunit) { | |
1da177e4 LT |
354 | cmn_err(CE_WARN, |
355 | "XFS: logbuf size must be greater than or equal to log stripe size"); | |
356 | return XFS_ERROR(EINVAL); | |
357 | } | |
358 | } else { | |
359 | /* Fail a mount if the logbuf is larger than 32K */ | |
360 | if (ap->logbufsize > XLOG_BIG_RECORD_BSIZE) { | |
361 | cmn_err(CE_WARN, | |
362 | "XFS: logbuf size for version 1 logs must be 16K or 32K"); | |
363 | return XFS_ERROR(EINVAL); | |
364 | } | |
365 | } | |
366 | ||
13059ff0 NS |
367 | if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) { |
368 | mp->m_flags |= XFS_MOUNT_ATTR2; | |
369 | } | |
370 | ||
1da177e4 LT |
371 | /* |
372 | * prohibit r/w mounts of read-only filesystems | |
373 | */ | |
374 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
375 | cmn_err(CE_WARN, | |
376 | "XFS: cannot mount a read-only filesystem as read-write"); | |
377 | return XFS_ERROR(EROFS); | |
378 | } | |
379 | ||
1da177e4 LT |
380 | /* |
381 | * check for shared mount. | |
382 | */ | |
383 | if (ap->flags & XFSMNT_SHARED) { | |
384 | if (!XFS_SB_VERSION_HASSHARED(&mp->m_sb)) | |
385 | return XFS_ERROR(EINVAL); | |
386 | ||
387 | /* | |
388 | * For IRIX 6.5, shared mounts must have the shared | |
389 | * version bit set, have the persistent readonly | |
390 | * field set, must be version 0 and can only be mounted | |
391 | * read-only. | |
392 | */ | |
393 | if (!ronly || !(mp->m_sb.sb_flags & XFS_SBF_READONLY) || | |
394 | (mp->m_sb.sb_shared_vn != 0)) | |
395 | return XFS_ERROR(EINVAL); | |
396 | ||
397 | mp->m_flags |= XFS_MOUNT_SHARED; | |
398 | ||
399 | /* | |
400 | * Shared XFS V0 can't deal with DMI. Return EINVAL. | |
401 | */ | |
402 | if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI)) | |
403 | return XFS_ERROR(EINVAL); | |
404 | } | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
409 | /* | |
410 | * xfs_mount | |
411 | * | |
412 | * The file system configurations are: | |
413 | * (1) device (partition) with data and internal log | |
414 | * (2) logical volume with data and log subvolumes. | |
415 | * (3) logical volume with data, log, and realtime subvolumes. | |
416 | * | |
417 | * We only have to handle opening the log and realtime volumes here if | |
418 | * they are present. The data subvolume has already been opened by | |
419 | * get_sb_bdev() and is stored in vfsp->vfs_super->s_bdev. | |
420 | */ | |
421 | STATIC int | |
422 | xfs_mount( | |
423 | struct bhv_desc *bhvp, | |
424 | struct xfs_mount_args *args, | |
425 | cred_t *credp) | |
426 | { | |
b83bd138 | 427 | struct bhv_vfs *vfsp = bhvtovfs(bhvp); |
1da177e4 LT |
428 | struct bhv_desc *p; |
429 | struct xfs_mount *mp = XFS_BHVTOM(bhvp); | |
430 | struct block_device *ddev, *logdev, *rtdev; | |
431 | int flags = 0, error; | |
432 | ||
433 | ddev = vfsp->vfs_super->s_bdev; | |
434 | logdev = rtdev = NULL; | |
435 | ||
436 | /* | |
437 | * Setup xfs_mount function vectors from available behaviors | |
438 | */ | |
439 | p = vfs_bhv_lookup(vfsp, VFS_POSITION_DM); | |
440 | mp->m_dm_ops = p ? *(xfs_dmops_t *) vfs_bhv_custom(p) : xfs_dmcore_stub; | |
441 | p = vfs_bhv_lookup(vfsp, VFS_POSITION_QM); | |
442 | mp->m_qm_ops = p ? *(xfs_qmops_t *) vfs_bhv_custom(p) : xfs_qmcore_stub; | |
443 | p = vfs_bhv_lookup(vfsp, VFS_POSITION_IO); | |
444 | mp->m_io_ops = p ? *(xfs_ioops_t *) vfs_bhv_custom(p) : xfs_iocore_xfs; | |
445 | ||
764d1f89 NS |
446 | if (args->flags & XFSMNT_QUIET) |
447 | flags |= XFS_MFSI_QUIET; | |
448 | ||
1da177e4 LT |
449 | /* |
450 | * Open real time and log devices - order is important. | |
451 | */ | |
452 | if (args->logname[0]) { | |
453 | error = xfs_blkdev_get(mp, args->logname, &logdev); | |
454 | if (error) | |
455 | return error; | |
456 | } | |
457 | if (args->rtname[0]) { | |
458 | error = xfs_blkdev_get(mp, args->rtname, &rtdev); | |
459 | if (error) { | |
460 | xfs_blkdev_put(logdev); | |
461 | return error; | |
462 | } | |
463 | ||
464 | if (rtdev == ddev || rtdev == logdev) { | |
465 | cmn_err(CE_WARN, | |
466 | "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
467 | xfs_blkdev_put(logdev); | |
468 | xfs_blkdev_put(rtdev); | |
469 | return EINVAL; | |
470 | } | |
471 | } | |
472 | ||
473 | /* | |
474 | * Setup xfs_mount buffer target pointers | |
475 | */ | |
476 | error = ENOMEM; | |
477 | mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0); | |
478 | if (!mp->m_ddev_targp) { | |
479 | xfs_blkdev_put(logdev); | |
480 | xfs_blkdev_put(rtdev); | |
481 | return error; | |
482 | } | |
483 | if (rtdev) { | |
484 | mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1); | |
485 | if (!mp->m_rtdev_targp) | |
486 | goto error0; | |
487 | } | |
488 | mp->m_logdev_targp = (logdev && logdev != ddev) ? | |
489 | xfs_alloc_buftarg(logdev, 1) : mp->m_ddev_targp; | |
490 | if (!mp->m_logdev_targp) | |
491 | goto error0; | |
492 | ||
493 | /* | |
494 | * Setup flags based on mount(2) options and then the superblock | |
495 | */ | |
496 | error = xfs_start_flags(vfsp, args, mp); | |
497 | if (error) | |
498 | goto error1; | |
764d1f89 | 499 | error = xfs_readsb(mp, flags); |
1da177e4 LT |
500 | if (error) |
501 | goto error1; | |
502 | error = xfs_finish_flags(vfsp, args, mp); | |
503 | if (error) | |
504 | goto error2; | |
505 | ||
506 | /* | |
507 | * Setup xfs_mount buffer target pointers based on superblock | |
508 | */ | |
509 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, | |
510 | mp->m_sb.sb_sectsize); | |
511 | if (!error && logdev && logdev != ddev) { | |
512 | unsigned int log_sector_size = BBSIZE; | |
513 | ||
514 | if (XFS_SB_VERSION_HASSECTOR(&mp->m_sb)) | |
515 | log_sector_size = mp->m_sb.sb_logsectsize; | |
516 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
517 | mp->m_sb.sb_blocksize, | |
518 | log_sector_size); | |
519 | } | |
520 | if (!error && rtdev) | |
521 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
522 | mp->m_sb.sb_blocksize, | |
523 | mp->m_sb.sb_sectsize); | |
524 | if (error) | |
525 | goto error2; | |
526 | ||
b2ea401b | 527 | if (mp->m_flags & XFS_MOUNT_BARRIER) |
c7d437da CH |
528 | xfs_mountfs_check_barriers(mp); |
529 | ||
2a82b8be DC |
530 | if ((error = xfs_filestream_mount(mp))) |
531 | goto error2; | |
532 | ||
1da177e4 | 533 | error = XFS_IOINIT(vfsp, args, flags); |
f538d4da CH |
534 | if (error) |
535 | goto error2; | |
536 | ||
f538d4da CH |
537 | return 0; |
538 | ||
1da177e4 LT |
539 | error2: |
540 | if (mp->m_sb_bp) | |
541 | xfs_freesb(mp); | |
542 | error1: | |
543 | xfs_binval(mp->m_ddev_targp); | |
544 | if (logdev && logdev != ddev) | |
545 | xfs_binval(mp->m_logdev_targp); | |
546 | if (rtdev) | |
547 | xfs_binval(mp->m_rtdev_targp); | |
548 | error0: | |
549 | xfs_unmountfs_close(mp, credp); | |
550 | return error; | |
551 | } | |
552 | ||
553 | STATIC int | |
554 | xfs_unmount( | |
555 | bhv_desc_t *bdp, | |
556 | int flags, | |
557 | cred_t *credp) | |
558 | { | |
b83bd138 | 559 | bhv_vfs_t *vfsp = bhvtovfs(bdp); |
1da177e4 LT |
560 | xfs_mount_t *mp = XFS_BHVTOM(bdp); |
561 | xfs_inode_t *rip; | |
67fcaa73 | 562 | bhv_vnode_t *rvp; |
1da177e4 LT |
563 | int unmount_event_wanted = 0; |
564 | int unmount_event_flags = 0; | |
565 | int xfs_unmountfs_needed = 0; | |
566 | int error; | |
567 | ||
568 | rip = mp->m_rootip; | |
569 | rvp = XFS_ITOV(rip); | |
570 | ||
571 | if (vfsp->vfs_flag & VFS_DMI) { | |
572 | error = XFS_SEND_PREUNMOUNT(mp, vfsp, | |
573 | rvp, DM_RIGHT_NULL, rvp, DM_RIGHT_NULL, | |
574 | NULL, NULL, 0, 0, | |
575 | (mp->m_dmevmask & (1<<DM_EVENT_PREUNMOUNT))? | |
576 | 0:DM_FLAGS_UNWANTED); | |
577 | if (error) | |
578 | return XFS_ERROR(error); | |
579 | unmount_event_wanted = 1; | |
580 | unmount_event_flags = (mp->m_dmevmask & (1<<DM_EVENT_UNMOUNT))? | |
581 | 0 : DM_FLAGS_UNWANTED; | |
582 | } | |
583 | ||
584 | /* | |
585 | * First blow any referenced inode from this file system | |
586 | * out of the reference cache, and delete the timer. | |
587 | */ | |
588 | xfs_refcache_purge_mp(mp); | |
589 | ||
2a82b8be DC |
590 | /* |
591 | * Blow away any referenced inode in the filestreams cache. | |
592 | * This can and will cause log traffic as inodes go inactive | |
593 | * here. | |
594 | */ | |
595 | xfs_filestream_unmount(mp); | |
596 | ||
1da177e4 LT |
597 | XFS_bflush(mp->m_ddev_targp); |
598 | error = xfs_unmount_flush(mp, 0); | |
599 | if (error) | |
600 | goto out; | |
601 | ||
602 | ASSERT(vn_count(rvp) == 1); | |
603 | ||
604 | /* | |
605 | * Drop the reference count | |
606 | */ | |
607 | VN_RELE(rvp); | |
608 | ||
609 | /* | |
610 | * If we're forcing a shutdown, typically because of a media error, | |
611 | * we want to make sure we invalidate dirty pages that belong to | |
612 | * referenced vnodes as well. | |
613 | */ | |
614 | if (XFS_FORCED_SHUTDOWN(mp)) { | |
615 | error = xfs_sync(&mp->m_bhv, | |
616 | (SYNC_WAIT | SYNC_CLOSE), credp); | |
617 | ASSERT(error != EFSCORRUPTED); | |
618 | } | |
619 | xfs_unmountfs_needed = 1; | |
620 | ||
621 | out: | |
622 | /* Send DMAPI event, if required. | |
623 | * Then do xfs_unmountfs() if needed. | |
624 | * Then return error (or zero). | |
625 | */ | |
626 | if (unmount_event_wanted) { | |
627 | /* Note: mp structure must still exist for | |
628 | * XFS_SEND_UNMOUNT() call. | |
629 | */ | |
630 | XFS_SEND_UNMOUNT(mp, vfsp, error == 0 ? rvp : NULL, | |
631 | DM_RIGHT_NULL, 0, error, unmount_event_flags); | |
632 | } | |
633 | if (xfs_unmountfs_needed) { | |
634 | /* | |
635 | * Call common unmount function to flush to disk | |
636 | * and free the super block buffer & mount structures. | |
637 | */ | |
638 | xfs_unmountfs(mp, credp); | |
639 | } | |
640 | ||
641 | return XFS_ERROR(error); | |
642 | } | |
643 | ||
f898d6c0 CH |
644 | STATIC int |
645 | xfs_quiesce_fs( | |
646 | xfs_mount_t *mp) | |
647 | { | |
648 | int count = 0, pincount; | |
3758dee9 | 649 | |
f898d6c0 CH |
650 | xfs_refcache_purge_mp(mp); |
651 | xfs_flush_buftarg(mp->m_ddev_targp, 0); | |
652 | xfs_finish_reclaim_all(mp, 0); | |
653 | ||
654 | /* This loop must run at least twice. | |
655 | * The first instance of the loop will flush | |
656 | * most meta data but that will generate more | |
657 | * meta data (typically directory updates). | |
658 | * Which then must be flushed and logged before | |
659 | * we can write the unmount record. | |
3758dee9 | 660 | */ |
f898d6c0 | 661 | do { |
516b2e7c | 662 | xfs_syncsub(mp, SYNC_INODE_QUIESCE, NULL); |
f898d6c0 CH |
663 | pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1); |
664 | if (!pincount) { | |
665 | delay(50); | |
666 | count++; | |
667 | } | |
668 | } while (count < 2); | |
669 | ||
670 | return 0; | |
671 | } | |
1da177e4 | 672 | |
516b2e7c DC |
673 | /* |
674 | * Second stage of a quiesce. The data is already synced, now we have to take | |
675 | * care of the metadata. New transactions are already blocked, so we need to | |
676 | * wait for any remaining transactions to drain out before proceding. | |
677 | */ | |
678 | STATIC void | |
679 | xfs_attr_quiesce( | |
680 | xfs_mount_t *mp) | |
681 | { | |
682 | /* wait for all modifications to complete */ | |
683 | while (atomic_read(&mp->m_active_trans) > 0) | |
684 | delay(100); | |
685 | ||
686 | /* flush inodes and push all remaining buffers out to disk */ | |
687 | xfs_quiesce_fs(mp); | |
688 | ||
689 | ASSERT_ALWAYS(atomic_read(&mp->m_active_trans) == 0); | |
690 | ||
691 | /* Push the superblock and write an unmount record */ | |
692 | xfs_log_sbcount(mp, 1); | |
693 | xfs_log_unmount_write(mp); | |
694 | xfs_unmountfs_writesb(mp); | |
695 | } | |
696 | ||
1da177e4 LT |
697 | STATIC int |
698 | xfs_mntupdate( | |
699 | bhv_desc_t *bdp, | |
700 | int *flags, | |
701 | struct xfs_mount_args *args) | |
702 | { | |
b83bd138 | 703 | bhv_vfs_t *vfsp = bhvtovfs(bdp); |
1da177e4 | 704 | xfs_mount_t *mp = XFS_BHVTOM(bdp); |
1da177e4 | 705 | |
d08d389d NS |
706 | if (!(*flags & MS_RDONLY)) { /* rw/ro -> rw */ |
707 | if (vfsp->vfs_flag & VFS_RDONLY) | |
708 | vfsp->vfs_flag &= ~VFS_RDONLY; | |
709 | if (args->flags & XFSMNT_BARRIER) { | |
710 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
f538d4da | 711 | xfs_mountfs_check_barriers(mp); |
d08d389d NS |
712 | } else { |
713 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
714 | } | |
715 | } else if (!(vfsp->vfs_flag & VFS_RDONLY)) { /* rw -> ro */ | |
2a82b8be | 716 | xfs_filestream_flush(mp); |
516b2e7c DC |
717 | bhv_vfs_sync(vfsp, SYNC_DATA_QUIESCE, NULL); |
718 | xfs_attr_quiesce(mp); | |
1da177e4 | 719 | vfsp->vfs_flag |= VFS_RDONLY; |
1da177e4 | 720 | } |
1da177e4 LT |
721 | return 0; |
722 | } | |
723 | ||
724 | /* | |
725 | * xfs_unmount_flush implements a set of flush operation on special | |
726 | * inodes, which are needed as a separate set of operations so that | |
727 | * they can be called as part of relocation process. | |
728 | */ | |
729 | int | |
730 | xfs_unmount_flush( | |
731 | xfs_mount_t *mp, /* Mount structure we are getting | |
732 | rid of. */ | |
733 | int relocation) /* Called from vfs relocation. */ | |
734 | { | |
735 | xfs_inode_t *rip = mp->m_rootip; | |
736 | xfs_inode_t *rbmip; | |
737 | xfs_inode_t *rsumip = NULL; | |
67fcaa73 | 738 | bhv_vnode_t *rvp = XFS_ITOV(rip); |
1da177e4 LT |
739 | int error; |
740 | ||
f7c66ce3 | 741 | xfs_ilock(rip, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT); |
1da177e4 LT |
742 | xfs_iflock(rip); |
743 | ||
744 | /* | |
745 | * Flush out the real time inodes. | |
746 | */ | |
747 | if ((rbmip = mp->m_rbmip) != NULL) { | |
748 | xfs_ilock(rbmip, XFS_ILOCK_EXCL); | |
749 | xfs_iflock(rbmip); | |
750 | error = xfs_iflush(rbmip, XFS_IFLUSH_SYNC); | |
751 | xfs_iunlock(rbmip, XFS_ILOCK_EXCL); | |
752 | ||
753 | if (error == EFSCORRUPTED) | |
754 | goto fscorrupt_out; | |
755 | ||
756 | ASSERT(vn_count(XFS_ITOV(rbmip)) == 1); | |
757 | ||
758 | rsumip = mp->m_rsumip; | |
759 | xfs_ilock(rsumip, XFS_ILOCK_EXCL); | |
760 | xfs_iflock(rsumip); | |
761 | error = xfs_iflush(rsumip, XFS_IFLUSH_SYNC); | |
762 | xfs_iunlock(rsumip, XFS_ILOCK_EXCL); | |
763 | ||
764 | if (error == EFSCORRUPTED) | |
765 | goto fscorrupt_out; | |
766 | ||
767 | ASSERT(vn_count(XFS_ITOV(rsumip)) == 1); | |
768 | } | |
769 | ||
770 | /* | |
771 | * Synchronously flush root inode to disk | |
772 | */ | |
773 | error = xfs_iflush(rip, XFS_IFLUSH_SYNC); | |
774 | if (error == EFSCORRUPTED) | |
775 | goto fscorrupt_out2; | |
776 | ||
777 | if (vn_count(rvp) != 1 && !relocation) { | |
778 | xfs_iunlock(rip, XFS_ILOCK_EXCL); | |
779 | return XFS_ERROR(EBUSY); | |
780 | } | |
781 | ||
782 | /* | |
783 | * Release dquot that rootinode, rbmino and rsumino might be holding, | |
784 | * flush and purge the quota inodes. | |
785 | */ | |
786 | error = XFS_QM_UNMOUNT(mp); | |
787 | if (error == EFSCORRUPTED) | |
788 | goto fscorrupt_out2; | |
789 | ||
790 | if (rbmip) { | |
791 | VN_RELE(XFS_ITOV(rbmip)); | |
792 | VN_RELE(XFS_ITOV(rsumip)); | |
793 | } | |
794 | ||
795 | xfs_iunlock(rip, XFS_ILOCK_EXCL); | |
796 | return 0; | |
797 | ||
798 | fscorrupt_out: | |
799 | xfs_ifunlock(rip); | |
800 | ||
801 | fscorrupt_out2: | |
802 | xfs_iunlock(rip, XFS_ILOCK_EXCL); | |
803 | ||
804 | return XFS_ERROR(EFSCORRUPTED); | |
805 | } | |
806 | ||
807 | /* | |
808 | * xfs_root extracts the root vnode from a vfs. | |
809 | * | |
810 | * vfsp -- the vfs struct for the desired file system | |
811 | * vpp -- address of the caller's vnode pointer which should be | |
812 | * set to the desired fs root vnode | |
813 | */ | |
814 | STATIC int | |
815 | xfs_root( | |
816 | bhv_desc_t *bdp, | |
67fcaa73 | 817 | bhv_vnode_t **vpp) |
1da177e4 | 818 | { |
67fcaa73 | 819 | bhv_vnode_t *vp; |
1da177e4 LT |
820 | |
821 | vp = XFS_ITOV((XFS_BHVTOM(bdp))->m_rootip); | |
822 | VN_HOLD(vp); | |
823 | *vpp = vp; | |
824 | return 0; | |
825 | } | |
826 | ||
827 | /* | |
828 | * xfs_statvfs | |
829 | * | |
830 | * Fill in the statvfs structure for the given file system. We use | |
831 | * the superblock lock in the mount structure to ensure a consistent | |
832 | * snapshot of the counters returned. | |
833 | */ | |
834 | STATIC int | |
835 | xfs_statvfs( | |
836 | bhv_desc_t *bdp, | |
8285fb58 | 837 | bhv_statvfs_t *statp, |
67fcaa73 | 838 | bhv_vnode_t *vp) |
1da177e4 LT |
839 | { |
840 | __uint64_t fakeinos; | |
841 | xfs_extlen_t lsize; | |
842 | xfs_mount_t *mp; | |
843 | xfs_sb_t *sbp; | |
844 | unsigned long s; | |
1da177e4 LT |
845 | |
846 | mp = XFS_BHVTOM(bdp); | |
847 | sbp = &(mp->m_sb); | |
848 | ||
849 | statp->f_type = XFS_SB_MAGIC; | |
850 | ||
dbcabad1 | 851 | xfs_icsb_sync_counters_flags(mp, XFS_ICSB_LAZY_COUNT); |
1da177e4 LT |
852 | s = XFS_SB_LOCK(mp); |
853 | statp->f_bsize = sbp->sb_blocksize; | |
854 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
855 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
4be536de DC |
856 | statp->f_bfree = statp->f_bavail = |
857 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1da177e4 LT |
858 | fakeinos = statp->f_bfree << sbp->sb_inopblog; |
859 | #if XFS_BIG_INUMS | |
860 | fakeinos += mp->m_inoadd; | |
861 | #endif | |
862 | statp->f_files = | |
863 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
864 | if (mp->m_maxicount) | |
865 | #if XFS_BIG_INUMS | |
866 | if (!mp->m_inoadd) | |
867 | #endif | |
868 | statp->f_files = min_t(typeof(statp->f_files), | |
869 | statp->f_files, | |
870 | mp->m_maxicount); | |
871 | statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
872 | XFS_SB_UNLOCK(mp, s); | |
873 | ||
cde410a9 | 874 | xfs_statvfs_fsid(statp, mp); |
1da177e4 LT |
875 | statp->f_namelen = MAXNAMELEN - 1; |
876 | ||
877 | return 0; | |
878 | } | |
879 | ||
880 | ||
881 | /* | |
882 | * xfs_sync flushes any pending I/O to file system vfsp. | |
883 | * | |
884 | * This routine is called by vfs_sync() to make sure that things make it | |
885 | * out to disk eventually, on sync() system calls to flush out everything, | |
886 | * and when the file system is unmounted. For the vfs_sync() case, all | |
887 | * we really need to do is sync out the log to make all of our meta-data | |
888 | * updates permanent (except for timestamps). For calls from pflushd(), | |
889 | * dirty pages are kept moving by calling pdflush() on the inodes | |
890 | * containing them. We also flush the inodes that we can lock without | |
891 | * sleeping and the superblock if we can lock it without sleeping from | |
892 | * vfs_sync() so that items at the tail of the log are always moving out. | |
893 | * | |
894 | * Flags: | |
895 | * SYNC_BDFLUSH - We're being called from vfs_sync() so we don't want | |
896 | * to sleep if we can help it. All we really need | |
897 | * to do is ensure that the log is synced at least | |
898 | * periodically. We also push the inodes and | |
899 | * superblock if we can lock them without sleeping | |
900 | * and they are not pinned. | |
901 | * SYNC_ATTR - We need to flush the inodes. If SYNC_BDFLUSH is not | |
902 | * set, then we really want to lock each inode and flush | |
903 | * it. | |
904 | * SYNC_WAIT - All the flushes that take place in this call should | |
905 | * be synchronous. | |
906 | * SYNC_DELWRI - This tells us to push dirty pages associated with | |
907 | * inodes. SYNC_WAIT and SYNC_BDFLUSH are used to | |
908 | * determine if they should be flushed sync, async, or | |
909 | * delwri. | |
910 | * SYNC_CLOSE - This flag is passed when the system is being | |
c41564b5 | 911 | * unmounted. We should sync and invalidate everything. |
1da177e4 LT |
912 | * SYNC_FSDATA - This indicates that the caller would like to make |
913 | * sure the superblock is safe on disk. We can ensure | |
c41564b5 | 914 | * this by simply making sure the log gets flushed |
1da177e4 LT |
915 | * if SYNC_BDFLUSH is set, and by actually writing it |
916 | * out otherwise. | |
3c0dc77b DC |
917 | * SYNC_IOWAIT - The caller wants us to wait for all data I/O to complete |
918 | * before we return (including direct I/O). Forms the drain | |
919 | * side of the write barrier needed to safely quiesce the | |
920 | * filesystem. | |
1da177e4 LT |
921 | * |
922 | */ | |
923 | /*ARGSUSED*/ | |
924 | STATIC int | |
925 | xfs_sync( | |
926 | bhv_desc_t *bdp, | |
927 | int flags, | |
928 | cred_t *credp) | |
929 | { | |
f898d6c0 | 930 | xfs_mount_t *mp = XFS_BHVTOM(bdp); |
1da177e4 | 931 | |
2a82b8be DC |
932 | if (flags & SYNC_IOWAIT) |
933 | xfs_filestream_flush(mp); | |
934 | ||
2823945f | 935 | return xfs_syncsub(mp, flags, NULL); |
1da177e4 LT |
936 | } |
937 | ||
938 | /* | |
939 | * xfs sync routine for internal use | |
940 | * | |
b83bd138 | 941 | * This routine supports all of the flags defined for the generic vfs_sync |
1f9b3b64 | 942 | * interface as explained above under xfs_sync. |
1da177e4 LT |
943 | * |
944 | */ | |
ee34807a | 945 | int |
1da177e4 LT |
946 | xfs_sync_inodes( |
947 | xfs_mount_t *mp, | |
948 | int flags, | |
1da177e4 LT |
949 | int *bypassed) |
950 | { | |
951 | xfs_inode_t *ip = NULL; | |
952 | xfs_inode_t *ip_next; | |
953 | xfs_buf_t *bp; | |
67fcaa73 | 954 | bhv_vnode_t *vp = NULL; |
1da177e4 LT |
955 | int error; |
956 | int last_error; | |
957 | uint64_t fflag; | |
958 | uint lock_flags; | |
959 | uint base_lock_flags; | |
960 | boolean_t mount_locked; | |
961 | boolean_t vnode_refed; | |
962 | int preempt; | |
963 | xfs_dinode_t *dip; | |
964 | xfs_iptr_t *ipointer; | |
965 | #ifdef DEBUG | |
966 | boolean_t ipointer_in = B_FALSE; | |
967 | ||
968 | #define IPOINTER_SET ipointer_in = B_TRUE | |
969 | #define IPOINTER_CLR ipointer_in = B_FALSE | |
970 | #else | |
971 | #define IPOINTER_SET | |
972 | #define IPOINTER_CLR | |
973 | #endif | |
974 | ||
975 | ||
976 | /* Insert a marker record into the inode list after inode ip. The list | |
977 | * must be locked when this is called. After the call the list will no | |
978 | * longer be locked. | |
979 | */ | |
980 | #define IPOINTER_INSERT(ip, mp) { \ | |
981 | ASSERT(ipointer_in == B_FALSE); \ | |
982 | ipointer->ip_mnext = ip->i_mnext; \ | |
983 | ipointer->ip_mprev = ip; \ | |
984 | ip->i_mnext = (xfs_inode_t *)ipointer; \ | |
985 | ipointer->ip_mnext->i_mprev = (xfs_inode_t *)ipointer; \ | |
986 | preempt = 0; \ | |
987 | XFS_MOUNT_IUNLOCK(mp); \ | |
988 | mount_locked = B_FALSE; \ | |
989 | IPOINTER_SET; \ | |
990 | } | |
991 | ||
992 | /* Remove the marker from the inode list. If the marker was the only item | |
993 | * in the list then there are no remaining inodes and we should zero out | |
994 | * the whole list. If we are the current head of the list then move the head | |
995 | * past us. | |
996 | */ | |
997 | #define IPOINTER_REMOVE(ip, mp) { \ | |
998 | ASSERT(ipointer_in == B_TRUE); \ | |
999 | if (ipointer->ip_mnext != (xfs_inode_t *)ipointer) { \ | |
1000 | ip = ipointer->ip_mnext; \ | |
1001 | ip->i_mprev = ipointer->ip_mprev; \ | |
1002 | ipointer->ip_mprev->i_mnext = ip; \ | |
1003 | if (mp->m_inodes == (xfs_inode_t *)ipointer) { \ | |
1004 | mp->m_inodes = ip; \ | |
1005 | } \ | |
1006 | } else { \ | |
1007 | ASSERT(mp->m_inodes == (xfs_inode_t *)ipointer); \ | |
1008 | mp->m_inodes = NULL; \ | |
1009 | ip = NULL; \ | |
1010 | } \ | |
1011 | IPOINTER_CLR; \ | |
1012 | } | |
1013 | ||
1014 | #define XFS_PREEMPT_MASK 0x7f | |
1015 | ||
1016 | if (bypassed) | |
1017 | *bypassed = 0; | |
1018 | if (XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY) | |
1019 | return 0; | |
1020 | error = 0; | |
1021 | last_error = 0; | |
1022 | preempt = 0; | |
1023 | ||
1024 | /* Allocate a reference marker */ | |
1025 | ipointer = (xfs_iptr_t *)kmem_zalloc(sizeof(xfs_iptr_t), KM_SLEEP); | |
1026 | ||
1027 | fflag = XFS_B_ASYNC; /* default is don't wait */ | |
ee34807a | 1028 | if (flags & (SYNC_BDFLUSH | SYNC_DELWRI)) |
1da177e4 LT |
1029 | fflag = XFS_B_DELWRI; |
1030 | if (flags & SYNC_WAIT) | |
1031 | fflag = 0; /* synchronous overrides all */ | |
1032 | ||
1033 | base_lock_flags = XFS_ILOCK_SHARED; | |
1034 | if (flags & (SYNC_DELWRI | SYNC_CLOSE)) { | |
1035 | /* | |
1036 | * We need the I/O lock if we're going to call any of | |
1037 | * the flush/inval routines. | |
1038 | */ | |
1039 | base_lock_flags |= XFS_IOLOCK_SHARED; | |
1040 | } | |
1041 | ||
1042 | XFS_MOUNT_ILOCK(mp); | |
1043 | ||
1044 | ip = mp->m_inodes; | |
1045 | ||
1046 | mount_locked = B_TRUE; | |
1047 | vnode_refed = B_FALSE; | |
1048 | ||
1049 | IPOINTER_CLR; | |
1050 | ||
1051 | do { | |
1052 | ASSERT(ipointer_in == B_FALSE); | |
1053 | ASSERT(vnode_refed == B_FALSE); | |
1054 | ||
1055 | lock_flags = base_lock_flags; | |
1056 | ||
1057 | /* | |
1058 | * There were no inodes in the list, just break out | |
1059 | * of the loop. | |
1060 | */ | |
1061 | if (ip == NULL) { | |
1062 | break; | |
1063 | } | |
1064 | ||
1065 | /* | |
1066 | * We found another sync thread marker - skip it | |
1067 | */ | |
1068 | if (ip->i_mount == NULL) { | |
1069 | ip = ip->i_mnext; | |
1070 | continue; | |
1071 | } | |
1072 | ||
1073 | vp = XFS_ITOV_NULL(ip); | |
1074 | ||
1075 | /* | |
1076 | * If the vnode is gone then this is being torn down, | |
1077 | * call reclaim if it is flushed, else let regular flush | |
1078 | * code deal with it later in the loop. | |
1079 | */ | |
1080 | ||
1081 | if (vp == NULL) { | |
1082 | /* Skip ones already in reclaim */ | |
1083 | if (ip->i_flags & XFS_IRECLAIM) { | |
1084 | ip = ip->i_mnext; | |
1085 | continue; | |
1086 | } | |
1087 | if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) { | |
1088 | ip = ip->i_mnext; | |
1089 | } else if ((xfs_ipincount(ip) == 0) && | |
1090 | xfs_iflock_nowait(ip)) { | |
1091 | IPOINTER_INSERT(ip, mp); | |
1092 | ||
1093 | xfs_finish_reclaim(ip, 1, | |
1094 | XFS_IFLUSH_DELWRI_ELSE_ASYNC); | |
1095 | ||
1096 | XFS_MOUNT_ILOCK(mp); | |
1097 | mount_locked = B_TRUE; | |
1098 | IPOINTER_REMOVE(ip, mp); | |
1099 | } else { | |
1100 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1101 | ip = ip->i_mnext; | |
1102 | } | |
1103 | continue; | |
1104 | } | |
1105 | ||
1106 | if (VN_BAD(vp)) { | |
1107 | ip = ip->i_mnext; | |
1108 | continue; | |
1109 | } | |
1110 | ||
1111 | if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) { | |
1112 | XFS_MOUNT_IUNLOCK(mp); | |
1113 | kmem_free(ipointer, sizeof(xfs_iptr_t)); | |
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | /* | |
1118 | * If this is just vfs_sync() or pflushd() calling | |
1119 | * then we can skip inodes for which it looks like | |
1120 | * there is nothing to do. Since we don't have the | |
c41564b5 | 1121 | * inode locked this is racy, but these are periodic |
1da177e4 LT |
1122 | * calls so it doesn't matter. For the others we want |
1123 | * to know for sure, so we at least try to lock them. | |
1124 | */ | |
1125 | if (flags & SYNC_BDFLUSH) { | |
1126 | if (((ip->i_itemp == NULL) || | |
1127 | !(ip->i_itemp->ili_format.ilf_fields & | |
1128 | XFS_ILOG_ALL)) && | |
1129 | (ip->i_update_core == 0)) { | |
1130 | ip = ip->i_mnext; | |
1131 | continue; | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | /* | |
1136 | * Try to lock without sleeping. We're out of order with | |
1137 | * the inode list lock here, so if we fail we need to drop | |
1138 | * the mount lock and try again. If we're called from | |
1139 | * bdflush() here, then don't bother. | |
1140 | * | |
1141 | * The inode lock here actually coordinates with the | |
1142 | * almost spurious inode lock in xfs_ireclaim() to prevent | |
1143 | * the vnode we handle here without a reference from | |
1144 | * being freed while we reference it. If we lock the inode | |
1145 | * while it's on the mount list here, then the spurious inode | |
1146 | * lock in xfs_ireclaim() after the inode is pulled from | |
1147 | * the mount list will sleep until we release it here. | |
1148 | * This keeps the vnode from being freed while we reference | |
cdb62687 | 1149 | * it. |
1da177e4 LT |
1150 | */ |
1151 | if (xfs_ilock_nowait(ip, lock_flags) == 0) { | |
1da177e4 LT |
1152 | if ((flags & SYNC_BDFLUSH) || (vp == NULL)) { |
1153 | ip = ip->i_mnext; | |
1154 | continue; | |
1155 | } | |
1156 | ||
cdb62687 | 1157 | vp = vn_grab(vp); |
1da177e4 | 1158 | if (vp == NULL) { |
cdb62687 | 1159 | ip = ip->i_mnext; |
1da177e4 LT |
1160 | continue; |
1161 | } | |
1162 | ||
cdb62687 | 1163 | IPOINTER_INSERT(ip, mp); |
1da177e4 LT |
1164 | xfs_ilock(ip, lock_flags); |
1165 | ||
1166 | ASSERT(vp == XFS_ITOV(ip)); | |
1167 | ASSERT(ip->i_mount == mp); | |
1168 | ||
1169 | vnode_refed = B_TRUE; | |
1170 | } | |
1171 | ||
1172 | /* From here on in the loop we may have a marker record | |
1173 | * in the inode list. | |
1174 | */ | |
1175 | ||
40095b64 DC |
1176 | /* |
1177 | * If we have to flush data or wait for I/O completion | |
1178 | * we need to drop the ilock that we currently hold. | |
1179 | * If we need to drop the lock, insert a marker if we | |
1180 | * have not already done so. | |
1181 | */ | |
1182 | if ((flags & (SYNC_CLOSE|SYNC_IOWAIT)) || | |
1183 | ((flags & SYNC_DELWRI) && VN_DIRTY(vp))) { | |
1184 | if (mount_locked) { | |
1185 | IPOINTER_INSERT(ip, mp); | |
1da177e4 | 1186 | } |
40095b64 | 1187 | xfs_iunlock(ip, XFS_ILOCK_SHARED); |
1da177e4 | 1188 | |
40095b64 DC |
1189 | if (flags & SYNC_CLOSE) { |
1190 | /* Shutdown case. Flush and invalidate. */ | |
1191 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1192 | bhv_vop_toss_pages(vp, 0, -1, FI_REMAPF); | |
1193 | else | |
1194 | error = bhv_vop_flushinval_pages(vp, 0, | |
1195 | -1, FI_REMAPF); | |
1196 | } else if ((flags & SYNC_DELWRI) && VN_DIRTY(vp)) { | |
67fcaa73 NS |
1197 | error = bhv_vop_flush_pages(vp, (xfs_off_t)0, |
1198 | -1, fflag, FI_NONE); | |
1da177e4 LT |
1199 | } |
1200 | ||
40095b64 DC |
1201 | /* |
1202 | * When freezing, we need to wait ensure all I/O (including direct | |
1203 | * I/O) is complete to ensure no further data modification can take | |
1204 | * place after this point | |
1205 | */ | |
1206 | if (flags & SYNC_IOWAIT) | |
1207 | vn_iowait(vp); | |
1208 | ||
1209 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
1da177e4 LT |
1210 | } |
1211 | ||
1212 | if (flags & SYNC_BDFLUSH) { | |
1213 | if ((flags & SYNC_ATTR) && | |
1214 | ((ip->i_update_core) || | |
1215 | ((ip->i_itemp != NULL) && | |
1216 | (ip->i_itemp->ili_format.ilf_fields != 0)))) { | |
1217 | ||
1218 | /* Insert marker and drop lock if not already | |
1219 | * done. | |
1220 | */ | |
1221 | if (mount_locked) { | |
1222 | IPOINTER_INSERT(ip, mp); | |
1223 | } | |
1224 | ||
1225 | /* | |
1226 | * We don't want the periodic flushing of the | |
1227 | * inodes by vfs_sync() to interfere with | |
1228 | * I/O to the file, especially read I/O | |
1229 | * where it is only the access time stamp | |
1230 | * that is being flushed out. To prevent | |
1231 | * long periods where we have both inode | |
1232 | * locks held shared here while reading the | |
1233 | * inode's buffer in from disk, we drop the | |
1234 | * inode lock while reading in the inode | |
1235 | * buffer. We have to release the buffer | |
1236 | * and reacquire the inode lock so that they | |
1237 | * are acquired in the proper order (inode | |
1238 | * locks first). The buffer will go at the | |
1239 | * end of the lru chain, though, so we can | |
1240 | * expect it to still be there when we go | |
1241 | * for it again in xfs_iflush(). | |
1242 | */ | |
1243 | if ((xfs_ipincount(ip) == 0) && | |
1244 | xfs_iflock_nowait(ip)) { | |
1245 | ||
1246 | xfs_ifunlock(ip); | |
1247 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1248 | ||
1249 | error = xfs_itobp(mp, NULL, ip, | |
b12dd342 | 1250 | &dip, &bp, 0, 0); |
1da177e4 LT |
1251 | if (!error) { |
1252 | xfs_buf_relse(bp); | |
1253 | } else { | |
1254 | /* Bailing out, remove the | |
1255 | * marker and free it. | |
1256 | */ | |
1257 | XFS_MOUNT_ILOCK(mp); | |
1da177e4 | 1258 | IPOINTER_REMOVE(ip, mp); |
1da177e4 LT |
1259 | XFS_MOUNT_IUNLOCK(mp); |
1260 | ||
1261 | ASSERT(!(lock_flags & | |
1262 | XFS_IOLOCK_SHARED)); | |
1263 | ||
1264 | kmem_free(ipointer, | |
1265 | sizeof(xfs_iptr_t)); | |
1266 | return (0); | |
1267 | } | |
1268 | ||
1269 | /* | |
1270 | * Since we dropped the inode lock, | |
1271 | * the inode may have been reclaimed. | |
1272 | * Therefore, we reacquire the mount | |
1273 | * lock and check to see if we were the | |
1274 | * inode reclaimed. If this happened | |
1275 | * then the ipointer marker will no | |
1276 | * longer point back at us. In this | |
1277 | * case, move ip along to the inode | |
1278 | * after the marker, remove the marker | |
1279 | * and continue. | |
1280 | */ | |
1281 | XFS_MOUNT_ILOCK(mp); | |
1282 | mount_locked = B_TRUE; | |
1283 | ||
1284 | if (ip != ipointer->ip_mprev) { | |
1285 | IPOINTER_REMOVE(ip, mp); | |
1286 | ||
1287 | ASSERT(!vnode_refed); | |
1288 | ASSERT(!(lock_flags & | |
1289 | XFS_IOLOCK_SHARED)); | |
1290 | continue; | |
1291 | } | |
1292 | ||
1293 | ASSERT(ip->i_mount == mp); | |
1294 | ||
1295 | if (xfs_ilock_nowait(ip, | |
1296 | XFS_ILOCK_SHARED) == 0) { | |
1297 | ASSERT(ip->i_mount == mp); | |
1298 | /* | |
1299 | * We failed to reacquire | |
1300 | * the inode lock without | |
1301 | * sleeping, so just skip | |
1302 | * the inode for now. We | |
1303 | * clear the ILOCK bit from | |
1304 | * the lock_flags so that we | |
1305 | * won't try to drop a lock | |
1306 | * we don't hold below. | |
1307 | */ | |
1308 | lock_flags &= ~XFS_ILOCK_SHARED; | |
1309 | IPOINTER_REMOVE(ip_next, mp); | |
1310 | } else if ((xfs_ipincount(ip) == 0) && | |
1311 | xfs_iflock_nowait(ip)) { | |
1312 | ASSERT(ip->i_mount == mp); | |
1313 | /* | |
1314 | * Since this is vfs_sync() | |
1315 | * calling we only flush the | |
1316 | * inode out if we can lock | |
1317 | * it without sleeping and | |
1318 | * it is not pinned. Drop | |
1319 | * the mount lock here so | |
1320 | * that we don't hold it for | |
1321 | * too long. We already have | |
1322 | * a marker in the list here. | |
1323 | */ | |
1324 | XFS_MOUNT_IUNLOCK(mp); | |
1325 | mount_locked = B_FALSE; | |
1326 | error = xfs_iflush(ip, | |
1327 | XFS_IFLUSH_DELWRI); | |
1328 | } else { | |
1329 | ASSERT(ip->i_mount == mp); | |
1330 | IPOINTER_REMOVE(ip_next, mp); | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | } | |
1335 | ||
1336 | } else { | |
1337 | if ((flags & SYNC_ATTR) && | |
1338 | ((ip->i_update_core) || | |
1339 | ((ip->i_itemp != NULL) && | |
1340 | (ip->i_itemp->ili_format.ilf_fields != 0)))) { | |
1341 | if (mount_locked) { | |
1342 | IPOINTER_INSERT(ip, mp); | |
1343 | } | |
1344 | ||
1345 | if (flags & SYNC_WAIT) { | |
1346 | xfs_iflock(ip); | |
1347 | error = xfs_iflush(ip, | |
1348 | XFS_IFLUSH_SYNC); | |
1349 | } else { | |
1350 | /* | |
1351 | * If we can't acquire the flush | |
1352 | * lock, then the inode is already | |
1353 | * being flushed so don't bother | |
1354 | * waiting. If we can lock it then | |
1355 | * do a delwri flush so we can | |
1356 | * combine multiple inode flushes | |
1357 | * in each disk write. | |
1358 | */ | |
1359 | if (xfs_iflock_nowait(ip)) { | |
1360 | error = xfs_iflush(ip, | |
1361 | XFS_IFLUSH_DELWRI); | |
1362 | } | |
1363 | else if (bypassed) | |
1364 | (*bypassed)++; | |
1365 | } | |
1366 | } | |
1367 | } | |
1368 | ||
1369 | if (lock_flags != 0) { | |
1370 | xfs_iunlock(ip, lock_flags); | |
1371 | } | |
1372 | ||
1373 | if (vnode_refed) { | |
1374 | /* | |
1375 | * If we had to take a reference on the vnode | |
1376 | * above, then wait until after we've unlocked | |
1377 | * the inode to release the reference. This is | |
1378 | * because we can be already holding the inode | |
1379 | * lock when VN_RELE() calls xfs_inactive(). | |
1380 | * | |
1381 | * Make sure to drop the mount lock before calling | |
1382 | * VN_RELE() so that we don't trip over ourselves if | |
1383 | * we have to go for the mount lock again in the | |
1384 | * inactive code. | |
1385 | */ | |
1386 | if (mount_locked) { | |
1387 | IPOINTER_INSERT(ip, mp); | |
1388 | } | |
1389 | ||
1390 | VN_RELE(vp); | |
1391 | ||
1392 | vnode_refed = B_FALSE; | |
1393 | } | |
1394 | ||
1395 | if (error) { | |
1396 | last_error = error; | |
1397 | } | |
1398 | ||
1399 | /* | |
1400 | * bail out if the filesystem is corrupted. | |
1401 | */ | |
1402 | if (error == EFSCORRUPTED) { | |
1403 | if (!mount_locked) { | |
1404 | XFS_MOUNT_ILOCK(mp); | |
1405 | IPOINTER_REMOVE(ip, mp); | |
1406 | } | |
1407 | XFS_MOUNT_IUNLOCK(mp); | |
1408 | ASSERT(ipointer_in == B_FALSE); | |
1409 | kmem_free(ipointer, sizeof(xfs_iptr_t)); | |
1410 | return XFS_ERROR(error); | |
1411 | } | |
1412 | ||
1413 | /* Let other threads have a chance at the mount lock | |
1414 | * if we have looped many times without dropping the | |
1415 | * lock. | |
1416 | */ | |
1417 | if ((++preempt & XFS_PREEMPT_MASK) == 0) { | |
1418 | if (mount_locked) { | |
1419 | IPOINTER_INSERT(ip, mp); | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | if (mount_locked == B_FALSE) { | |
1424 | XFS_MOUNT_ILOCK(mp); | |
1425 | mount_locked = B_TRUE; | |
1426 | IPOINTER_REMOVE(ip, mp); | |
1427 | continue; | |
1428 | } | |
1429 | ||
1430 | ASSERT(ipointer_in == B_FALSE); | |
1431 | ip = ip->i_mnext; | |
1432 | ||
1433 | } while (ip != mp->m_inodes); | |
1434 | ||
1435 | XFS_MOUNT_IUNLOCK(mp); | |
1436 | ||
1437 | ASSERT(ipointer_in == B_FALSE); | |
1438 | ||
1439 | kmem_free(ipointer, sizeof(xfs_iptr_t)); | |
1440 | return XFS_ERROR(last_error); | |
1441 | } | |
1442 | ||
1443 | /* | |
1444 | * xfs sync routine for internal use | |
1445 | * | |
b83bd138 | 1446 | * This routine supports all of the flags defined for the generic vfs_sync |
1f9b3b64 | 1447 | * interface as explained above under xfs_sync. |
1da177e4 LT |
1448 | * |
1449 | */ | |
1450 | int | |
1451 | xfs_syncsub( | |
1452 | xfs_mount_t *mp, | |
1453 | int flags, | |
1da177e4 LT |
1454 | int *bypassed) |
1455 | { | |
1456 | int error = 0; | |
1457 | int last_error = 0; | |
1458 | uint log_flags = XFS_LOG_FORCE; | |
1459 | xfs_buf_t *bp; | |
1460 | xfs_buf_log_item_t *bip; | |
1461 | ||
1462 | /* | |
1463 | * Sync out the log. This ensures that the log is periodically | |
1464 | * flushed even if there is not enough activity to fill it up. | |
1465 | */ | |
1466 | if (flags & SYNC_WAIT) | |
1467 | log_flags |= XFS_LOG_SYNC; | |
1468 | ||
1469 | xfs_log_force(mp, (xfs_lsn_t)0, log_flags); | |
1470 | ||
1471 | if (flags & (SYNC_ATTR|SYNC_DELWRI)) { | |
1472 | if (flags & SYNC_BDFLUSH) | |
1473 | xfs_finish_reclaim_all(mp, 1); | |
1474 | else | |
1f9b3b64 | 1475 | error = xfs_sync_inodes(mp, flags, bypassed); |
1da177e4 LT |
1476 | } |
1477 | ||
1478 | /* | |
1479 | * Flushing out dirty data above probably generated more | |
1480 | * log activity, so if this isn't vfs_sync() then flush | |
1481 | * the log again. | |
1482 | */ | |
1483 | if (flags & SYNC_DELWRI) { | |
1484 | xfs_log_force(mp, (xfs_lsn_t)0, log_flags); | |
1485 | } | |
1486 | ||
1487 | if (flags & SYNC_FSDATA) { | |
1488 | /* | |
1489 | * If this is vfs_sync() then only sync the superblock | |
1490 | * if we can lock it without sleeping and it is not pinned. | |
1491 | */ | |
1492 | if (flags & SYNC_BDFLUSH) { | |
1493 | bp = xfs_getsb(mp, XFS_BUF_TRYLOCK); | |
1494 | if (bp != NULL) { | |
1495 | bip = XFS_BUF_FSPRIVATE(bp,xfs_buf_log_item_t*); | |
1496 | if ((bip != NULL) && | |
1497 | xfs_buf_item_dirty(bip)) { | |
1498 | if (!(XFS_BUF_ISPINNED(bp))) { | |
1499 | XFS_BUF_ASYNC(bp); | |
1500 | error = xfs_bwrite(mp, bp); | |
1501 | } else { | |
1502 | xfs_buf_relse(bp); | |
1503 | } | |
1504 | } else { | |
1505 | xfs_buf_relse(bp); | |
1506 | } | |
1507 | } | |
1508 | } else { | |
1509 | bp = xfs_getsb(mp, 0); | |
1510 | /* | |
1511 | * If the buffer is pinned then push on the log so | |
1512 | * we won't get stuck waiting in the write for | |
1513 | * someone, maybe ourselves, to flush the log. | |
1514 | * Even though we just pushed the log above, we | |
1515 | * did not have the superblock buffer locked at | |
1516 | * that point so it can become pinned in between | |
1517 | * there and here. | |
1518 | */ | |
1519 | if (XFS_BUF_ISPINNED(bp)) | |
1520 | xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE); | |
1521 | if (flags & SYNC_WAIT) | |
1522 | XFS_BUF_UNASYNC(bp); | |
1523 | else | |
1524 | XFS_BUF_ASYNC(bp); | |
1525 | error = xfs_bwrite(mp, bp); | |
1526 | } | |
1527 | if (error) { | |
1528 | last_error = error; | |
1529 | } | |
1530 | } | |
1531 | ||
1532 | /* | |
1533 | * If this is the periodic sync, then kick some entries out of | |
1534 | * the reference cache. This ensures that idle entries are | |
1535 | * eventually kicked out of the cache. | |
1536 | */ | |
1537 | if (flags & SYNC_REFCACHE) { | |
cde410a9 NS |
1538 | if (flags & SYNC_WAIT) |
1539 | xfs_refcache_purge_mp(mp); | |
1540 | else | |
1541 | xfs_refcache_purge_some(mp); | |
1da177e4 LT |
1542 | } |
1543 | ||
92821e2b DC |
1544 | /* |
1545 | * If asked, update the disk superblock with incore counter values if we | |
1546 | * are using non-persistent counters so that they don't get too far out | |
1547 | * of sync if we crash or get a forced shutdown. We don't want to force | |
1548 | * this to disk, just get a transaction into the iclogs.... | |
1549 | */ | |
1550 | if (flags & SYNC_SUPER) | |
1551 | xfs_log_sbcount(mp, 0); | |
1552 | ||
1da177e4 LT |
1553 | /* |
1554 | * Now check to see if the log needs a "dummy" transaction. | |
1555 | */ | |
1556 | ||
1557 | if (!(flags & SYNC_REMOUNT) && xfs_log_need_covered(mp)) { | |
1558 | xfs_trans_t *tp; | |
1559 | xfs_inode_t *ip; | |
1560 | ||
1561 | /* | |
1562 | * Put a dummy transaction in the log to tell | |
1563 | * recovery that all others are OK. | |
1564 | */ | |
1565 | tp = xfs_trans_alloc(mp, XFS_TRANS_DUMMY1); | |
1566 | if ((error = xfs_trans_reserve(tp, 0, | |
1567 | XFS_ICHANGE_LOG_RES(mp), | |
1568 | 0, 0, 0))) { | |
1569 | xfs_trans_cancel(tp, 0); | |
1570 | return error; | |
1571 | } | |
1572 | ||
1573 | ip = mp->m_rootip; | |
1574 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
1575 | ||
1576 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
1577 | xfs_trans_ihold(tp, ip); | |
1578 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1c72bf90 | 1579 | error = xfs_trans_commit(tp, 0); |
1da177e4 LT |
1580 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
1581 | xfs_log_force(mp, (xfs_lsn_t)0, log_flags); | |
1582 | } | |
1583 | ||
1584 | /* | |
1585 | * When shutting down, we need to insure that the AIL is pushed | |
1586 | * to disk or the filesystem can appear corrupt from the PROM. | |
1587 | */ | |
1588 | if ((flags & (SYNC_CLOSE|SYNC_WAIT)) == (SYNC_CLOSE|SYNC_WAIT)) { | |
1589 | XFS_bflush(mp->m_ddev_targp); | |
1590 | if (mp->m_rtdev_targp) { | |
1591 | XFS_bflush(mp->m_rtdev_targp); | |
1592 | } | |
1593 | } | |
1594 | ||
1595 | return XFS_ERROR(last_error); | |
1596 | } | |
1597 | ||
1598 | /* | |
1599 | * xfs_vget - called by DMAPI and NFSD to get vnode from file handle | |
1600 | */ | |
1601 | STATIC int | |
1602 | xfs_vget( | |
1603 | bhv_desc_t *bdp, | |
67fcaa73 | 1604 | bhv_vnode_t **vpp, |
1da177e4 LT |
1605 | fid_t *fidp) |
1606 | { | |
1607 | xfs_mount_t *mp = XFS_BHVTOM(bdp); | |
1608 | xfs_fid_t *xfid = (struct xfs_fid *)fidp; | |
1609 | xfs_inode_t *ip; | |
1610 | int error; | |
1611 | xfs_ino_t ino; | |
1612 | unsigned int igen; | |
1613 | ||
1614 | /* | |
1615 | * Invalid. Since handles can be created in user space and passed in | |
1616 | * via gethandle(), this is not cause for a panic. | |
1617 | */ | |
1618 | if (xfid->xfs_fid_len != sizeof(*xfid) - sizeof(xfid->xfs_fid_len)) | |
1619 | return XFS_ERROR(EINVAL); | |
1620 | ||
1621 | ino = xfid->xfs_fid_ino; | |
1622 | igen = xfid->xfs_fid_gen; | |
1623 | ||
1624 | /* | |
1625 | * NFS can sometimes send requests for ino 0. Fail them gracefully. | |
1626 | */ | |
1627 | if (ino == 0) | |
1628 | return XFS_ERROR(ESTALE); | |
1629 | ||
1630 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0); | |
1631 | if (error) { | |
1632 | *vpp = NULL; | |
1633 | return error; | |
1634 | } | |
1635 | ||
1636 | if (ip == NULL) { | |
1637 | *vpp = NULL; | |
1638 | return XFS_ERROR(EIO); | |
1639 | } | |
1640 | ||
1641 | if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) { | |
1642 | xfs_iput_new(ip, XFS_ILOCK_SHARED); | |
1643 | *vpp = NULL; | |
1644 | return XFS_ERROR(ENOENT); | |
1645 | } | |
1646 | ||
1647 | *vpp = XFS_ITOV(ip); | |
1648 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1649 | return 0; | |
1650 | } | |
1651 | ||
1652 | ||
1653 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ | |
1654 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
1655 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
1656 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
1657 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
1658 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
1659 | #define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */ | |
1660 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ | |
1661 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
1662 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
1663 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
1664 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
1665 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
e69a333b NS |
1666 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ |
1667 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
1668 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
1669 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
1f443ad7 | 1670 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ |
1da177e4 LT |
1671 | #define MNTOPT_IHASHSIZE "ihashsize" /* size of inode hash table */ |
1672 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
f538d4da | 1673 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and |
d8cc890d | 1674 | * unwritten extent conversion */ |
4ef19ddd | 1675 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ |
1da177e4 LT |
1676 | #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */ |
1677 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ | |
1678 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ | |
1679 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
e8c8b3a7 DC |
1680 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ |
1681 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
1682 | * in stat(). */ | |
d8cc890d NS |
1683 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ |
1684 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
2a82b8be | 1685 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ |
1da177e4 | 1686 | |
1f443ad7 | 1687 | STATIC unsigned long |
b190f113 | 1688 | suffix_strtoul(char *s, char **endp, unsigned int base) |
1f443ad7 NS |
1689 | { |
1690 | int last, shift_left_factor = 0; | |
b190f113 | 1691 | char *value = s; |
1f443ad7 NS |
1692 | |
1693 | last = strlen(value) - 1; | |
1694 | if (value[last] == 'K' || value[last] == 'k') { | |
1695 | shift_left_factor = 10; | |
1696 | value[last] = '\0'; | |
1697 | } | |
1698 | if (value[last] == 'M' || value[last] == 'm') { | |
1699 | shift_left_factor = 20; | |
1700 | value[last] = '\0'; | |
1701 | } | |
1702 | if (value[last] == 'G' || value[last] == 'g') { | |
1703 | shift_left_factor = 30; | |
1704 | value[last] = '\0'; | |
1705 | } | |
1706 | ||
b190f113 | 1707 | return simple_strtoul((const char *)s, endp, base) << shift_left_factor; |
1f443ad7 | 1708 | } |
1da177e4 | 1709 | |
ba0f32d4 | 1710 | STATIC int |
1da177e4 LT |
1711 | xfs_parseargs( |
1712 | struct bhv_desc *bhv, | |
1713 | char *options, | |
1714 | struct xfs_mount_args *args, | |
1715 | int update) | |
1716 | { | |
b83bd138 | 1717 | bhv_vfs_t *vfsp = bhvtovfs(bhv); |
1da177e4 LT |
1718 | char *this_char, *value, *eov; |
1719 | int dsunit, dswidth, vol_dsunit, vol_dswidth; | |
1720 | int iosize; | |
1721 | ||
e15f195c | 1722 | args->flags |= XFSMNT_IDELETE; |
3bbcc8e3 NS |
1723 | args->flags |= XFSMNT_BARRIER; |
1724 | args->flags2 |= XFSMNT2_COMPAT_IOSIZE; | |
1da177e4 LT |
1725 | |
1726 | if (!options) | |
05db218a | 1727 | goto done; |
1da177e4 LT |
1728 | |
1729 | iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0; | |
1730 | ||
1731 | while ((this_char = strsep(&options, ",")) != NULL) { | |
1732 | if (!*this_char) | |
1733 | continue; | |
1734 | if ((value = strchr(this_char, '=')) != NULL) | |
1735 | *value++ = 0; | |
1736 | ||
1737 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
1738 | if (!value || !*value) { | |
b6574520 NS |
1739 | cmn_err(CE_WARN, |
1740 | "XFS: %s option requires an argument", | |
1f443ad7 | 1741 | this_char); |
1da177e4 LT |
1742 | return EINVAL; |
1743 | } | |
1744 | args->logbufs = simple_strtoul(value, &eov, 10); | |
1745 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { | |
1da177e4 | 1746 | if (!value || !*value) { |
b6574520 NS |
1747 | cmn_err(CE_WARN, |
1748 | "XFS: %s option requires an argument", | |
1f443ad7 | 1749 | this_char); |
1da177e4 LT |
1750 | return EINVAL; |
1751 | } | |
1f443ad7 | 1752 | args->logbufsize = suffix_strtoul(value, &eov, 10); |
1da177e4 LT |
1753 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
1754 | if (!value || !*value) { | |
b6574520 NS |
1755 | cmn_err(CE_WARN, |
1756 | "XFS: %s option requires an argument", | |
1f443ad7 | 1757 | this_char); |
1da177e4 LT |
1758 | return EINVAL; |
1759 | } | |
1760 | strncpy(args->logname, value, MAXNAMELEN); | |
1761 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { | |
1762 | if (!value || !*value) { | |
b6574520 NS |
1763 | cmn_err(CE_WARN, |
1764 | "XFS: %s option requires an argument", | |
1f443ad7 | 1765 | this_char); |
1da177e4 LT |
1766 | return EINVAL; |
1767 | } | |
1768 | strncpy(args->mtpt, value, MAXNAMELEN); | |
1769 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { | |
1770 | if (!value || !*value) { | |
b6574520 NS |
1771 | cmn_err(CE_WARN, |
1772 | "XFS: %s option requires an argument", | |
1f443ad7 | 1773 | this_char); |
1da177e4 LT |
1774 | return EINVAL; |
1775 | } | |
1776 | strncpy(args->rtname, value, MAXNAMELEN); | |
1777 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { | |
1778 | if (!value || !*value) { | |
b6574520 NS |
1779 | cmn_err(CE_WARN, |
1780 | "XFS: %s option requires an argument", | |
1f443ad7 | 1781 | this_char); |
1da177e4 LT |
1782 | return EINVAL; |
1783 | } | |
1784 | iosize = simple_strtoul(value, &eov, 10); | |
1785 | args->flags |= XFSMNT_IOSIZE; | |
1786 | args->iosizelog = (uint8_t) iosize; | |
1f443ad7 NS |
1787 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
1788 | if (!value || !*value) { | |
b6574520 NS |
1789 | cmn_err(CE_WARN, |
1790 | "XFS: %s option requires an argument", | |
1f443ad7 NS |
1791 | this_char); |
1792 | return EINVAL; | |
1793 | } | |
1794 | iosize = suffix_strtoul(value, &eov, 10); | |
1795 | args->flags |= XFSMNT_IOSIZE; | |
1796 | args->iosizelog = ffs(iosize) - 1; | |
1da177e4 LT |
1797 | } else if (!strcmp(this_char, MNTOPT_IHASHSIZE)) { |
1798 | if (!value || !*value) { | |
b6574520 NS |
1799 | cmn_err(CE_WARN, |
1800 | "XFS: %s option requires an argument", | |
1f443ad7 | 1801 | this_char); |
1da177e4 LT |
1802 | return EINVAL; |
1803 | } | |
1804 | args->flags |= XFSMNT_IHASHSIZE; | |
1805 | args->ihashsize = simple_strtoul(value, &eov, 10); | |
e69a333b NS |
1806 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
1807 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
1808 | vfsp->vfs_flag |= VFS_GRPID; | |
1809 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
1810 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
1811 | vfsp->vfs_flag &= ~VFS_GRPID; | |
1da177e4 LT |
1812 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { |
1813 | args->flags |= XFSMNT_WSYNC; | |
1814 | } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) { | |
1815 | args->flags |= XFSMNT_OSYNCISOSYNC; | |
1816 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { | |
1817 | args->flags |= XFSMNT_NORECOVERY; | |
1818 | } else if (!strcmp(this_char, MNTOPT_INO64)) { | |
1819 | args->flags |= XFSMNT_INO64; | |
1820 | #if !XFS_BIG_INUMS | |
b6574520 NS |
1821 | cmn_err(CE_WARN, |
1822 | "XFS: %s option not allowed on this system", | |
1f443ad7 | 1823 | this_char); |
1da177e4 LT |
1824 | return EINVAL; |
1825 | #endif | |
1826 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { | |
1827 | args->flags |= XFSMNT_NOALIGN; | |
1828 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { | |
1829 | args->flags |= XFSMNT_SWALLOC; | |
1830 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { | |
1831 | if (!value || !*value) { | |
b6574520 NS |
1832 | cmn_err(CE_WARN, |
1833 | "XFS: %s option requires an argument", | |
1f443ad7 | 1834 | this_char); |
1da177e4 LT |
1835 | return EINVAL; |
1836 | } | |
1837 | dsunit = simple_strtoul(value, &eov, 10); | |
1838 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { | |
1839 | if (!value || !*value) { | |
b6574520 NS |
1840 | cmn_err(CE_WARN, |
1841 | "XFS: %s option requires an argument", | |
1f443ad7 | 1842 | this_char); |
1da177e4 LT |
1843 | return EINVAL; |
1844 | } | |
1845 | dswidth = simple_strtoul(value, &eov, 10); | |
1846 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { | |
1847 | args->flags &= ~XFSMNT_32BITINODES; | |
1848 | #if !XFS_BIG_INUMS | |
b6574520 NS |
1849 | cmn_err(CE_WARN, |
1850 | "XFS: %s option not allowed on this system", | |
1f443ad7 | 1851 | this_char); |
1da177e4 LT |
1852 | return EINVAL; |
1853 | #endif | |
1854 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { | |
1855 | args->flags |= XFSMNT_NOUUID; | |
f538d4da CH |
1856 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
1857 | args->flags |= XFSMNT_BARRIER; | |
4ef19ddd CH |
1858 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
1859 | args->flags &= ~XFSMNT_BARRIER; | |
1da177e4 LT |
1860 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
1861 | args->flags &= ~XFSMNT_IDELETE; | |
1862 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { | |
1863 | args->flags |= XFSMNT_IDELETE; | |
e8c8b3a7 | 1864 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
e718eeb4 | 1865 | args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE; |
e8c8b3a7 | 1866 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
e718eeb4 | 1867 | args->flags2 |= XFSMNT2_COMPAT_IOSIZE; |
d8cc890d | 1868 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
13059ff0 | 1869 | args->flags |= XFSMNT_ATTR2; |
d8cc890d | 1870 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
13059ff0 | 1871 | args->flags &= ~XFSMNT_ATTR2; |
2a82b8be DC |
1872 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
1873 | args->flags2 |= XFSMNT2_FILESTREAMS; | |
1da177e4 LT |
1874 | } else if (!strcmp(this_char, "osyncisdsync")) { |
1875 | /* no-op, this is now the default */ | |
b6574520 NS |
1876 | cmn_err(CE_WARN, |
1877 | "XFS: osyncisdsync is now the default, option is deprecated."); | |
1da177e4 | 1878 | } else if (!strcmp(this_char, "irixsgid")) { |
b6574520 NS |
1879 | cmn_err(CE_WARN, |
1880 | "XFS: irixsgid is now a sysctl(2) variable, option is deprecated."); | |
1da177e4 | 1881 | } else { |
b6574520 NS |
1882 | cmn_err(CE_WARN, |
1883 | "XFS: unknown mount option [%s].", this_char); | |
1da177e4 LT |
1884 | return EINVAL; |
1885 | } | |
1886 | } | |
1887 | ||
1888 | if (args->flags & XFSMNT_NORECOVERY) { | |
1889 | if ((vfsp->vfs_flag & VFS_RDONLY) == 0) { | |
b6574520 NS |
1890 | cmn_err(CE_WARN, |
1891 | "XFS: no-recovery mounts must be read-only."); | |
1da177e4 LT |
1892 | return EINVAL; |
1893 | } | |
1894 | } | |
1895 | ||
1896 | if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) { | |
b6574520 NS |
1897 | cmn_err(CE_WARN, |
1898 | "XFS: sunit and swidth options incompatible with the noalign option"); | |
1da177e4 LT |
1899 | return EINVAL; |
1900 | } | |
1901 | ||
1902 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { | |
b6574520 NS |
1903 | cmn_err(CE_WARN, |
1904 | "XFS: sunit and swidth must be specified together"); | |
1da177e4 LT |
1905 | return EINVAL; |
1906 | } | |
1907 | ||
1908 | if (dsunit && (dswidth % dsunit != 0)) { | |
b6574520 NS |
1909 | cmn_err(CE_WARN, |
1910 | "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)", | |
1da177e4 LT |
1911 | dswidth, dsunit); |
1912 | return EINVAL; | |
1913 | } | |
1914 | ||
1915 | if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) { | |
1916 | if (dsunit) { | |
1917 | args->sunit = dsunit; | |
1918 | args->flags |= XFSMNT_RETERR; | |
1919 | } else { | |
1920 | args->sunit = vol_dsunit; | |
1921 | } | |
1922 | dswidth ? (args->swidth = dswidth) : | |
1923 | (args->swidth = vol_dswidth); | |
1924 | } else { | |
1925 | args->sunit = args->swidth = 0; | |
1926 | } | |
1927 | ||
05db218a | 1928 | done: |
c11e2c36 NS |
1929 | if (args->flags & XFSMNT_32BITINODES) |
1930 | vfsp->vfs_flag |= VFS_32BITINODES; | |
e718eeb4 NS |
1931 | if (args->flags2) |
1932 | args->flags |= XFSMNT_FLAGS2; | |
1da177e4 LT |
1933 | return 0; |
1934 | } | |
1935 | ||
ba0f32d4 | 1936 | STATIC int |
1da177e4 LT |
1937 | xfs_showargs( |
1938 | struct bhv_desc *bhv, | |
1939 | struct seq_file *m) | |
1940 | { | |
1941 | static struct proc_xfs_info { | |
1942 | int flag; | |
1943 | char *str; | |
1944 | } xfs_info[] = { | |
1945 | /* the few simple ones we can get from the mount struct */ | |
1946 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, | |
1947 | { XFS_MOUNT_INO64, "," MNTOPT_INO64 }, | |
1948 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, | |
1949 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
1950 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
1951 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
1952 | { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC }, | |
1da177e4 LT |
1953 | { 0, NULL } |
1954 | }; | |
1955 | struct proc_xfs_info *xfs_infop; | |
1956 | struct xfs_mount *mp = XFS_BHVTOM(bhv); | |
b83bd138 | 1957 | struct bhv_vfs *vfsp = XFS_MTOVFS(mp); |
1da177e4 LT |
1958 | |
1959 | for (xfs_infop = xfs_info; xfs_infop->flag; xfs_infop++) { | |
1960 | if (mp->m_flags & xfs_infop->flag) | |
1961 | seq_puts(m, xfs_infop->str); | |
1962 | } | |
1963 | ||
1964 | if (mp->m_flags & XFS_MOUNT_IHASHSIZE) | |
215101c3 | 1965 | seq_printf(m, "," MNTOPT_IHASHSIZE "=%d", (int)mp->m_ihsize); |
1da177e4 LT |
1966 | |
1967 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
cfcbbbd0 NS |
1968 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", |
1969 | (int)(1 << mp->m_writeio_log) >> 10); | |
1da177e4 LT |
1970 | |
1971 | if (mp->m_logbufs > 0) | |
1972 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
1da177e4 | 1973 | if (mp->m_logbsize > 0) |
cfcbbbd0 | 1974 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); |
1da177e4 | 1975 | |
fc1f8c1c NS |
1976 | if (mp->m_logname) |
1977 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
fc1f8c1c NS |
1978 | if (mp->m_rtname) |
1979 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
1da177e4 LT |
1980 | |
1981 | if (mp->m_dalign > 0) | |
1982 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
1983 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
1da177e4 LT |
1984 | if (mp->m_swidth > 0) |
1985 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
1986 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
1987 | ||
e15f195c NS |
1988 | if (!(mp->m_flags & XFS_MOUNT_IDELETE)) |
1989 | seq_printf(m, "," MNTOPT_IKEEP); | |
fa7e7d71 NS |
1990 | if (!(mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)) |
1991 | seq_printf(m, "," MNTOPT_LARGEIO); | |
1992 | ||
c11e2c36 NS |
1993 | if (!(vfsp->vfs_flag & VFS_32BITINODES)) |
1994 | seq_printf(m, "," MNTOPT_64BITINODE); | |
e69a333b NS |
1995 | if (vfsp->vfs_flag & VFS_GRPID) |
1996 | seq_printf(m, "," MNTOPT_GRPID); | |
1997 | ||
1da177e4 LT |
1998 | return 0; |
1999 | } | |
2000 | ||
2823945f | 2001 | /* |
516b2e7c DC |
2002 | * Second stage of a freeze. The data is already frozen so we only |
2003 | * need to take care of themetadata. Once that's done write a dummy | |
2004 | * record to dirty the log in case of a crash while frozen. | |
2823945f | 2005 | */ |
1da177e4 LT |
2006 | STATIC void |
2007 | xfs_freeze( | |
2008 | bhv_desc_t *bdp) | |
2009 | { | |
2010 | xfs_mount_t *mp = XFS_BHVTOM(bdp); | |
2011 | ||
516b2e7c | 2012 | xfs_attr_quiesce(mp); |
e13a73f0 | 2013 | xfs_fs_log_dummy(mp); |
1da177e4 LT |
2014 | } |
2015 | ||
2016 | ||
b83bd138 | 2017 | bhv_vfsops_t xfs_vfsops = { |
1da177e4 LT |
2018 | BHV_IDENTITY_INIT(VFS_BHV_XFS,VFS_POSITION_XFS), |
2019 | .vfs_parseargs = xfs_parseargs, | |
2020 | .vfs_showargs = xfs_showargs, | |
2021 | .vfs_mount = xfs_mount, | |
2022 | .vfs_unmount = xfs_unmount, | |
2023 | .vfs_mntupdate = xfs_mntupdate, | |
2024 | .vfs_root = xfs_root, | |
2025 | .vfs_statvfs = xfs_statvfs, | |
2026 | .vfs_sync = xfs_sync, | |
2027 | .vfs_vget = xfs_vget, | |
2028 | .vfs_dmapiops = (vfs_dmapiops_t)fs_nosys, | |
2029 | .vfs_quotactl = (vfs_quotactl_t)fs_nosys, | |
2030 | .vfs_init_vnode = xfs_initialize_vnode, | |
2031 | .vfs_force_shutdown = xfs_do_force_shutdown, | |
2032 | .vfs_freeze = xfs_freeze, | |
2033 | }; |