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1da177e4 | 1 | /* |
a805bad5 | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
7b718769 | 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_bit.h" |
1da177e4 LT |
20 | #include "xfs_log.h" |
21 | #include "xfs_clnt.h" | |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
28 | #include "xfs_dmapi.h" | |
29 | #include "xfs_quota.h" | |
30 | #include "xfs_mount.h" | |
1da177e4 | 31 | #include "xfs_bmap_btree.h" |
a844f451 | 32 | #include "xfs_alloc_btree.h" |
1da177e4 | 33 | #include "xfs_ialloc_btree.h" |
1da177e4 | 34 | #include "xfs_dir2_sf.h" |
a844f451 | 35 | #include "xfs_attr_sf.h" |
1da177e4 LT |
36 | #include "xfs_dinode.h" |
37 | #include "xfs_inode.h" | |
a844f451 NS |
38 | #include "xfs_btree.h" |
39 | #include "xfs_ialloc.h" | |
1da177e4 | 40 | #include "xfs_bmap.h" |
1da177e4 LT |
41 | #include "xfs_rtalloc.h" |
42 | #include "xfs_error.h" | |
43 | #include "xfs_itable.h" | |
9909c4aa | 44 | #include "xfs_fsops.h" |
1da177e4 LT |
45 | #include "xfs_rw.h" |
46 | #include "xfs_acl.h" | |
1da177e4 LT |
47 | #include "xfs_attr.h" |
48 | #include "xfs_buf_item.h" | |
49 | #include "xfs_utils.h" | |
739bfb2a | 50 | #include "xfs_vnodeops.h" |
745f6919 | 51 | #include "xfs_vfsops.h" |
1da177e4 | 52 | #include "xfs_version.h" |
1da177e4 LT |
53 | |
54 | #include <linux/namei.h> | |
55 | #include <linux/init.h> | |
56 | #include <linux/mount.h> | |
0829c360 | 57 | #include <linux/mempool.h> |
1da177e4 | 58 | #include <linux/writeback.h> |
4df08c52 | 59 | #include <linux/kthread.h> |
7dfb7103 | 60 | #include <linux/freezer.h> |
1da177e4 | 61 | |
7989cb8e DC |
62 | static struct quotactl_ops xfs_quotactl_operations; |
63 | static struct super_operations xfs_super_operations; | |
64 | static kmem_zone_t *xfs_vnode_zone; | |
65 | static kmem_zone_t *xfs_ioend_zone; | |
0829c360 | 66 | mempool_t *xfs_ioend_pool; |
1da177e4 LT |
67 | |
68 | STATIC struct xfs_mount_args * | |
69 | xfs_args_allocate( | |
764d1f89 NS |
70 | struct super_block *sb, |
71 | int silent) | |
1da177e4 LT |
72 | { |
73 | struct xfs_mount_args *args; | |
74 | ||
75 | args = kmem_zalloc(sizeof(struct xfs_mount_args), KM_SLEEP); | |
76 | args->logbufs = args->logbufsize = -1; | |
77 | strncpy(args->fsname, sb->s_id, MAXNAMELEN); | |
78 | ||
79 | /* Copy the already-parsed mount(2) flags we're interested in */ | |
1da177e4 LT |
80 | if (sb->s_flags & MS_DIRSYNC) |
81 | args->flags |= XFSMNT_DIRSYNC; | |
82 | if (sb->s_flags & MS_SYNCHRONOUS) | |
83 | args->flags |= XFSMNT_WSYNC; | |
764d1f89 NS |
84 | if (silent) |
85 | args->flags |= XFSMNT_QUIET; | |
1da177e4 LT |
86 | args->flags |= XFSMNT_32BITINODES; |
87 | ||
88 | return args; | |
89 | } | |
90 | ||
91 | __uint64_t | |
92 | xfs_max_file_offset( | |
93 | unsigned int blockshift) | |
94 | { | |
95 | unsigned int pagefactor = 1; | |
96 | unsigned int bitshift = BITS_PER_LONG - 1; | |
97 | ||
98 | /* Figure out maximum filesize, on Linux this can depend on | |
99 | * the filesystem blocksize (on 32 bit platforms). | |
100 | * __block_prepare_write does this in an [unsigned] long... | |
101 | * page->index << (PAGE_CACHE_SHIFT - bbits) | |
102 | * So, for page sized blocks (4K on 32 bit platforms), | |
103 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
104 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
105 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
106 | * Note1: get_block_t takes a long (implicit cast from above) | |
107 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
108 | * can optionally convert the [unsigned] long from above into | |
109 | * an [unsigned] long long. | |
110 | */ | |
111 | ||
112 | #if BITS_PER_LONG == 32 | |
113 | # if defined(CONFIG_LBD) | |
114 | ASSERT(sizeof(sector_t) == 8); | |
115 | pagefactor = PAGE_CACHE_SIZE; | |
116 | bitshift = BITS_PER_LONG; | |
117 | # else | |
118 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
119 | # endif | |
120 | #endif | |
121 | ||
122 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
123 | } | |
124 | ||
7989cb8e | 125 | STATIC_INLINE void |
1da177e4 LT |
126 | xfs_set_inodeops( |
127 | struct inode *inode) | |
128 | { | |
0432dab2 CH |
129 | switch (inode->i_mode & S_IFMT) { |
130 | case S_IFREG: | |
416c6d5b | 131 | inode->i_op = &xfs_inode_operations; |
3562fd45 | 132 | inode->i_fop = &xfs_file_operations; |
e4c573bb | 133 | inode->i_mapping->a_ops = &xfs_address_space_operations; |
0432dab2 CH |
134 | break; |
135 | case S_IFDIR: | |
416c6d5b | 136 | inode->i_op = &xfs_dir_inode_operations; |
3562fd45 | 137 | inode->i_fop = &xfs_dir_file_operations; |
0432dab2 CH |
138 | break; |
139 | case S_IFLNK: | |
416c6d5b | 140 | inode->i_op = &xfs_symlink_inode_operations; |
1da177e4 | 141 | if (inode->i_blocks) |
e4c573bb | 142 | inode->i_mapping->a_ops = &xfs_address_space_operations; |
0432dab2 CH |
143 | break; |
144 | default: | |
416c6d5b | 145 | inode->i_op = &xfs_inode_operations; |
1da177e4 | 146 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
0432dab2 | 147 | break; |
1da177e4 LT |
148 | } |
149 | } | |
150 | ||
7989cb8e | 151 | STATIC_INLINE void |
1da177e4 LT |
152 | xfs_revalidate_inode( |
153 | xfs_mount_t *mp, | |
67fcaa73 | 154 | bhv_vnode_t *vp, |
1da177e4 LT |
155 | xfs_inode_t *ip) |
156 | { | |
ec86dc02 | 157 | struct inode *inode = vn_to_inode(vp); |
1da177e4 | 158 | |
0432dab2 | 159 | inode->i_mode = ip->i_d.di_mode; |
1da177e4 LT |
160 | inode->i_nlink = ip->i_d.di_nlink; |
161 | inode->i_uid = ip->i_d.di_uid; | |
162 | inode->i_gid = ip->i_d.di_gid; | |
0432dab2 CH |
163 | |
164 | switch (inode->i_mode & S_IFMT) { | |
165 | case S_IFBLK: | |
166 | case S_IFCHR: | |
167 | inode->i_rdev = | |
168 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
169 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
170 | break; | |
171 | default: | |
1da177e4 | 172 | inode->i_rdev = 0; |
0432dab2 | 173 | break; |
1da177e4 | 174 | } |
0432dab2 | 175 | |
1da177e4 LT |
176 | inode->i_generation = ip->i_d.di_gen; |
177 | i_size_write(inode, ip->i_d.di_size); | |
178 | inode->i_blocks = | |
179 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
180 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
181 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
182 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
183 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
184 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
185 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
186 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
187 | inode->i_flags |= S_IMMUTABLE; | |
188 | else | |
189 | inode->i_flags &= ~S_IMMUTABLE; | |
190 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
191 | inode->i_flags |= S_APPEND; | |
192 | else | |
193 | inode->i_flags &= ~S_APPEND; | |
194 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
195 | inode->i_flags |= S_SYNC; | |
196 | else | |
197 | inode->i_flags &= ~S_SYNC; | |
198 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
199 | inode->i_flags |= S_NOATIME; | |
200 | else | |
201 | inode->i_flags &= ~S_NOATIME; | |
b3aea4ed | 202 | xfs_iflags_clear(ip, XFS_IMODIFIED); |
1da177e4 LT |
203 | } |
204 | ||
205 | void | |
206 | xfs_initialize_vnode( | |
48c872a9 | 207 | struct xfs_mount *mp, |
67fcaa73 | 208 | bhv_vnode_t *vp, |
745f6919 | 209 | struct xfs_inode *ip) |
1da177e4 | 210 | { |
ec86dc02 | 211 | struct inode *inode = vn_to_inode(vp); |
1da177e4 | 212 | |
739bfb2a | 213 | if (!ip->i_vnode) { |
739bfb2a CH |
214 | ip->i_vnode = vp; |
215 | inode->i_private = ip; | |
1da177e4 LT |
216 | } |
217 | ||
218 | /* | |
219 | * We need to set the ops vectors, and unlock the inode, but if | |
220 | * we have been called during the new inode create process, it is | |
221 | * too early to fill in the Linux inode. We will get called a | |
222 | * second time once the inode is properly set up, and then we can | |
223 | * finish our work. | |
224 | */ | |
745f6919 | 225 | if (ip->i_d.di_mode != 0 && (inode->i_state & I_NEW)) { |
48c872a9 | 226 | xfs_revalidate_inode(mp, vp, ip); |
1da177e4 | 227 | xfs_set_inodeops(inode); |
ec86dc02 | 228 | |
7a18c386 | 229 | xfs_iflags_clear(ip, XFS_INEW); |
1da177e4 LT |
230 | barrier(); |
231 | ||
232 | unlock_new_inode(inode); | |
233 | } | |
234 | } | |
235 | ||
236 | int | |
237 | xfs_blkdev_get( | |
238 | xfs_mount_t *mp, | |
239 | const char *name, | |
240 | struct block_device **bdevp) | |
241 | { | |
242 | int error = 0; | |
243 | ||
244 | *bdevp = open_bdev_excl(name, 0, mp); | |
245 | if (IS_ERR(*bdevp)) { | |
246 | error = PTR_ERR(*bdevp); | |
247 | printk("XFS: Invalid device [%s], error=%d\n", name, error); | |
248 | } | |
249 | ||
250 | return -error; | |
251 | } | |
252 | ||
253 | void | |
254 | xfs_blkdev_put( | |
255 | struct block_device *bdev) | |
256 | { | |
257 | if (bdev) | |
258 | close_bdev_excl(bdev); | |
259 | } | |
260 | ||
f538d4da CH |
261 | /* |
262 | * Try to write out the superblock using barriers. | |
263 | */ | |
264 | STATIC int | |
265 | xfs_barrier_test( | |
266 | xfs_mount_t *mp) | |
267 | { | |
268 | xfs_buf_t *sbp = xfs_getsb(mp, 0); | |
269 | int error; | |
270 | ||
271 | XFS_BUF_UNDONE(sbp); | |
272 | XFS_BUF_UNREAD(sbp); | |
273 | XFS_BUF_UNDELAYWRITE(sbp); | |
274 | XFS_BUF_WRITE(sbp); | |
275 | XFS_BUF_UNASYNC(sbp); | |
276 | XFS_BUF_ORDERED(sbp); | |
277 | ||
278 | xfsbdstrat(mp, sbp); | |
279 | error = xfs_iowait(sbp); | |
280 | ||
281 | /* | |
282 | * Clear all the flags we set and possible error state in the | |
283 | * buffer. We only did the write to try out whether barriers | |
284 | * worked and shouldn't leave any traces in the superblock | |
285 | * buffer. | |
286 | */ | |
287 | XFS_BUF_DONE(sbp); | |
288 | XFS_BUF_ERROR(sbp, 0); | |
289 | XFS_BUF_UNORDERED(sbp); | |
290 | ||
291 | xfs_buf_relse(sbp); | |
292 | return error; | |
293 | } | |
294 | ||
295 | void | |
296 | xfs_mountfs_check_barriers(xfs_mount_t *mp) | |
297 | { | |
298 | int error; | |
299 | ||
300 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
301 | xfs_fs_cmn_err(CE_NOTE, mp, | |
302 | "Disabling barriers, not supported with external log device"); | |
303 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 304 | return; |
f538d4da CH |
305 | } |
306 | ||
ce8e922c | 307 | if (mp->m_ddev_targp->bt_bdev->bd_disk->queue->ordered == |
f538d4da CH |
308 | QUEUE_ORDERED_NONE) { |
309 | xfs_fs_cmn_err(CE_NOTE, mp, | |
310 | "Disabling barriers, not supported by the underlying device"); | |
311 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 312 | return; |
f538d4da CH |
313 | } |
314 | ||
b2ea401b NS |
315 | if (xfs_readonly_buftarg(mp->m_ddev_targp)) { |
316 | xfs_fs_cmn_err(CE_NOTE, mp, | |
317 | "Disabling barriers, underlying device is readonly"); | |
318 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
319 | return; | |
320 | } | |
321 | ||
f538d4da CH |
322 | error = xfs_barrier_test(mp); |
323 | if (error) { | |
324 | xfs_fs_cmn_err(CE_NOTE, mp, | |
325 | "Disabling barriers, trial barrier write failed"); | |
326 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 327 | return; |
f538d4da CH |
328 | } |
329 | } | |
330 | ||
331 | void | |
332 | xfs_blkdev_issue_flush( | |
333 | xfs_buftarg_t *buftarg) | |
334 | { | |
ce8e922c | 335 | blkdev_issue_flush(buftarg->bt_bdev, NULL); |
f538d4da | 336 | } |
1da177e4 LT |
337 | |
338 | STATIC struct inode * | |
a50cd269 | 339 | xfs_fs_alloc_inode( |
1da177e4 LT |
340 | struct super_block *sb) |
341 | { | |
67fcaa73 | 342 | bhv_vnode_t *vp; |
1da177e4 | 343 | |
8758280f NS |
344 | vp = kmem_zone_alloc(xfs_vnode_zone, KM_SLEEP); |
345 | if (unlikely(!vp)) | |
1da177e4 | 346 | return NULL; |
ec86dc02 | 347 | return vn_to_inode(vp); |
1da177e4 LT |
348 | } |
349 | ||
350 | STATIC void | |
a50cd269 | 351 | xfs_fs_destroy_inode( |
1da177e4 LT |
352 | struct inode *inode) |
353 | { | |
ec86dc02 | 354 | kmem_zone_free(xfs_vnode_zone, vn_from_inode(inode)); |
1da177e4 LT |
355 | } |
356 | ||
357 | STATIC void | |
a50cd269 | 358 | xfs_fs_inode_init_once( |
8758280f | 359 | kmem_zone_t *zonep, |
4ba9b9d0 | 360 | void *vnode) |
1da177e4 | 361 | { |
a35afb83 | 362 | inode_init_once(vn_to_inode((bhv_vnode_t *)vnode)); |
1da177e4 LT |
363 | } |
364 | ||
365 | STATIC int | |
8758280f | 366 | xfs_init_zones(void) |
1da177e4 | 367 | { |
67fcaa73 | 368 | xfs_vnode_zone = kmem_zone_init_flags(sizeof(bhv_vnode_t), "xfs_vnode", |
e0cc2325 NS |
369 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | |
370 | KM_ZONE_SPREAD, | |
a50cd269 | 371 | xfs_fs_inode_init_once); |
0829c360 CH |
372 | if (!xfs_vnode_zone) |
373 | goto out; | |
374 | ||
375 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
376 | if (!xfs_ioend_zone) | |
377 | goto out_destroy_vnode_zone; | |
378 | ||
93d2341c MD |
379 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, |
380 | xfs_ioend_zone); | |
0829c360 CH |
381 | if (!xfs_ioend_pool) |
382 | goto out_free_ioend_zone; | |
1da177e4 | 383 | return 0; |
0829c360 | 384 | |
0829c360 CH |
385 | out_free_ioend_zone: |
386 | kmem_zone_destroy(xfs_ioend_zone); | |
387 | out_destroy_vnode_zone: | |
388 | kmem_zone_destroy(xfs_vnode_zone); | |
389 | out: | |
390 | return -ENOMEM; | |
1da177e4 LT |
391 | } |
392 | ||
393 | STATIC void | |
8758280f | 394 | xfs_destroy_zones(void) |
1da177e4 | 395 | { |
0829c360 CH |
396 | mempool_destroy(xfs_ioend_pool); |
397 | kmem_zone_destroy(xfs_vnode_zone); | |
398 | kmem_zone_destroy(xfs_ioend_zone); | |
1da177e4 LT |
399 | } |
400 | ||
401 | /* | |
402 | * Attempt to flush the inode, this will actually fail | |
403 | * if the inode is pinned, but we dirty the inode again | |
404 | * at the point when it is unpinned after a log write, | |
8758280f | 405 | * since this is when the inode itself becomes flushable. |
1da177e4 LT |
406 | */ |
407 | STATIC int | |
a50cd269 | 408 | xfs_fs_write_inode( |
1da177e4 LT |
409 | struct inode *inode, |
410 | int sync) | |
411 | { | |
1da177e4 LT |
412 | int error = 0, flags = FLUSH_INODE; |
413 | ||
cf441eeb | 414 | xfs_itrace_entry(XFS_I(inode)); |
739bfb2a CH |
415 | if (sync) { |
416 | filemap_fdatawait(inode->i_mapping); | |
417 | flags |= FLUSH_SYNC; | |
1da177e4 | 418 | } |
739bfb2a | 419 | error = xfs_inode_flush(XFS_I(inode), flags); |
e893bffd LM |
420 | /* |
421 | * if we failed to write out the inode then mark | |
422 | * it dirty again so we'll try again later. | |
423 | */ | |
424 | if (error) | |
425 | mark_inode_dirty_sync(inode); | |
739bfb2a | 426 | |
1da177e4 LT |
427 | return -error; |
428 | } | |
429 | ||
430 | STATIC void | |
a50cd269 | 431 | xfs_fs_clear_inode( |
1da177e4 LT |
432 | struct inode *inode) |
433 | { | |
1543d79c | 434 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 435 | |
02ba71de | 436 | /* |
1543d79c | 437 | * ip can be null when xfs_iget_core calls xfs_idestroy if we |
02ba71de CH |
438 | * find an inode with di_mode == 0 but without IGET_CREATE set. |
439 | */ | |
1543d79c | 440 | if (ip) { |
cf441eeb | 441 | xfs_itrace_entry(ip); |
1543d79c CH |
442 | XFS_STATS_INC(vn_rele); |
443 | XFS_STATS_INC(vn_remove); | |
444 | XFS_STATS_INC(vn_reclaim); | |
445 | XFS_STATS_DEC(vn_active); | |
446 | ||
447 | xfs_inactive(ip); | |
448 | xfs_iflags_clear(ip, XFS_IMODIFIED); | |
449 | if (xfs_reclaim(ip)) | |
450 | panic("%s: cannot reclaim 0x%p\n", __FUNCTION__, inode); | |
b3aea4ed | 451 | } |
56d433e4 | 452 | |
739bfb2a | 453 | ASSERT(XFS_I(inode) == NULL); |
56d433e4 | 454 | } |
1da177e4 LT |
455 | |
456 | /* | |
457 | * Enqueue a work item to be picked up by the vfs xfssyncd thread. | |
458 | * Doing this has two advantages: | |
459 | * - It saves on stack space, which is tight in certain situations | |
460 | * - It can be used (with care) as a mechanism to avoid deadlocks. | |
461 | * Flushing while allocating in a full filesystem requires both. | |
462 | */ | |
463 | STATIC void | |
464 | xfs_syncd_queue_work( | |
74394496 | 465 | struct xfs_mount *mp, |
1da177e4 | 466 | void *data, |
74394496 | 467 | void (*syncer)(struct xfs_mount *, void *)) |
1da177e4 | 468 | { |
b83bd138 | 469 | struct bhv_vfs_sync_work *work; |
1da177e4 | 470 | |
b83bd138 | 471 | work = kmem_alloc(sizeof(struct bhv_vfs_sync_work), KM_SLEEP); |
1da177e4 LT |
472 | INIT_LIST_HEAD(&work->w_list); |
473 | work->w_syncer = syncer; | |
474 | work->w_data = data; | |
74394496 CH |
475 | work->w_mount = mp; |
476 | spin_lock(&mp->m_sync_lock); | |
477 | list_add_tail(&work->w_list, &mp->m_sync_list); | |
478 | spin_unlock(&mp->m_sync_lock); | |
479 | wake_up_process(mp->m_sync_task); | |
1da177e4 LT |
480 | } |
481 | ||
482 | /* | |
483 | * Flush delayed allocate data, attempting to free up reserved space | |
484 | * from existing allocations. At this point a new allocation attempt | |
485 | * has failed with ENOSPC and we are in the process of scratching our | |
486 | * heads, looking about for more room... | |
487 | */ | |
488 | STATIC void | |
489 | xfs_flush_inode_work( | |
74394496 CH |
490 | struct xfs_mount *mp, |
491 | void *arg) | |
1da177e4 | 492 | { |
74394496 CH |
493 | struct inode *inode = arg; |
494 | filemap_flush(inode->i_mapping); | |
495 | iput(inode); | |
1da177e4 LT |
496 | } |
497 | ||
498 | void | |
499 | xfs_flush_inode( | |
500 | xfs_inode_t *ip) | |
501 | { | |
74394496 | 502 | struct inode *inode = ip->i_vnode; |
1da177e4 LT |
503 | |
504 | igrab(inode); | |
74394496 | 505 | xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_inode_work); |
041e0e3b | 506 | delay(msecs_to_jiffies(500)); |
1da177e4 LT |
507 | } |
508 | ||
509 | /* | |
510 | * This is the "bigger hammer" version of xfs_flush_inode_work... | |
511 | * (IOW, "If at first you don't succeed, use a Bigger Hammer"). | |
512 | */ | |
513 | STATIC void | |
514 | xfs_flush_device_work( | |
74394496 CH |
515 | struct xfs_mount *mp, |
516 | void *arg) | |
1da177e4 | 517 | { |
74394496 | 518 | struct inode *inode = arg; |
b267ce99 | 519 | sync_blockdev(mp->m_super->s_bdev); |
74394496 | 520 | iput(inode); |
1da177e4 LT |
521 | } |
522 | ||
523 | void | |
524 | xfs_flush_device( | |
525 | xfs_inode_t *ip) | |
526 | { | |
ec86dc02 | 527 | struct inode *inode = vn_to_inode(XFS_ITOV(ip)); |
1da177e4 LT |
528 | |
529 | igrab(inode); | |
74394496 | 530 | xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_device_work); |
041e0e3b | 531 | delay(msecs_to_jiffies(500)); |
1da177e4 LT |
532 | xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC); |
533 | } | |
534 | ||
1da177e4 | 535 | STATIC void |
74394496 CH |
536 | xfs_sync_worker( |
537 | struct xfs_mount *mp, | |
1da177e4 LT |
538 | void *unused) |
539 | { | |
540 | int error; | |
541 | ||
74394496 CH |
542 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) |
543 | error = xfs_sync(mp, SYNC_FSDATA | SYNC_BDFLUSH | SYNC_ATTR | | |
544 | SYNC_REFCACHE | SYNC_SUPER); | |
545 | mp->m_sync_seq++; | |
546 | wake_up(&mp->m_wait_single_sync_task); | |
1da177e4 LT |
547 | } |
548 | ||
549 | STATIC int | |
550 | xfssyncd( | |
551 | void *arg) | |
552 | { | |
74394496 | 553 | struct xfs_mount *mp = arg; |
1da177e4 | 554 | long timeleft; |
b83bd138 | 555 | bhv_vfs_sync_work_t *work, *n; |
4df08c52 | 556 | LIST_HEAD (tmp); |
1da177e4 | 557 | |
83144186 | 558 | set_freezable(); |
041e0e3b | 559 | timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10); |
1da177e4 | 560 | for (;;) { |
041e0e3b | 561 | timeleft = schedule_timeout_interruptible(timeleft); |
1da177e4 | 562 | /* swsusp */ |
3e1d1d28 | 563 | try_to_freeze(); |
74394496 | 564 | if (kthread_should_stop() && list_empty(&mp->m_sync_list)) |
1da177e4 LT |
565 | break; |
566 | ||
74394496 | 567 | spin_lock(&mp->m_sync_lock); |
1da177e4 LT |
568 | /* |
569 | * We can get woken by laptop mode, to do a sync - | |
570 | * that's the (only!) case where the list would be | |
571 | * empty with time remaining. | |
572 | */ | |
74394496 | 573 | if (!timeleft || list_empty(&mp->m_sync_list)) { |
1da177e4 | 574 | if (!timeleft) |
041e0e3b NA |
575 | timeleft = xfs_syncd_centisecs * |
576 | msecs_to_jiffies(10); | |
74394496 CH |
577 | INIT_LIST_HEAD(&mp->m_sync_work.w_list); |
578 | list_add_tail(&mp->m_sync_work.w_list, | |
579 | &mp->m_sync_list); | |
1da177e4 | 580 | } |
74394496 | 581 | list_for_each_entry_safe(work, n, &mp->m_sync_list, w_list) |
1da177e4 | 582 | list_move(&work->w_list, &tmp); |
74394496 | 583 | spin_unlock(&mp->m_sync_lock); |
1da177e4 LT |
584 | |
585 | list_for_each_entry_safe(work, n, &tmp, w_list) { | |
74394496 | 586 | (*work->w_syncer)(mp, work->w_data); |
1da177e4 | 587 | list_del(&work->w_list); |
74394496 | 588 | if (work == &mp->m_sync_work) |
1da177e4 | 589 | continue; |
b83bd138 | 590 | kmem_free(work, sizeof(struct bhv_vfs_sync_work)); |
1da177e4 LT |
591 | } |
592 | } | |
593 | ||
1da177e4 LT |
594 | return 0; |
595 | } | |
596 | ||
1da177e4 | 597 | STATIC void |
a50cd269 | 598 | xfs_fs_put_super( |
1da177e4 LT |
599 | struct super_block *sb) |
600 | { | |
745f6919 | 601 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 LT |
602 | int error; |
603 | ||
74394496 CH |
604 | kthread_stop(mp->m_sync_task); |
605 | ||
745f6919 CH |
606 | xfs_sync(mp, SYNC_ATTR | SYNC_DELWRI); |
607 | error = xfs_unmount(mp, 0, NULL); | |
b267ce99 | 608 | if (error) |
b83bd138 | 609 | printk("XFS: unmount got error=%d\n", error); |
1da177e4 LT |
610 | } |
611 | ||
612 | STATIC void | |
a50cd269 | 613 | xfs_fs_write_super( |
1da177e4 LT |
614 | struct super_block *sb) |
615 | { | |
b83bd138 | 616 | if (!(sb->s_flags & MS_RDONLY)) |
745f6919 | 617 | xfs_sync(XFS_M(sb), SYNC_FSDATA); |
1da177e4 LT |
618 | sb->s_dirt = 0; |
619 | } | |
620 | ||
621 | STATIC int | |
a50cd269 | 622 | xfs_fs_sync_super( |
1da177e4 LT |
623 | struct super_block *sb, |
624 | int wait) | |
625 | { | |
745f6919 | 626 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 NS |
627 | int error; |
628 | int flags; | |
1da177e4 | 629 | |
e893bffd LM |
630 | /* |
631 | * Treat a sync operation like a freeze. This is to work | |
632 | * around a race in sync_inodes() which works in two phases | |
633 | * - an asynchronous flush, which can write out an inode | |
634 | * without waiting for file size updates to complete, and a | |
635 | * synchronous flush, which wont do anything because the | |
636 | * async flush removed the inode's dirty flag. Also | |
637 | * sync_inodes() will not see any files that just have | |
638 | * outstanding transactions to be flushed because we don't | |
639 | * dirty the Linux inode until after the transaction I/O | |
640 | * completes. | |
641 | */ | |
642 | if (wait || unlikely(sb->s_frozen == SB_FREEZE_WRITE)) { | |
2823945f DC |
643 | /* |
644 | * First stage of freeze - no more writers will make progress | |
645 | * now we are here, so we flush delwri and delalloc buffers | |
646 | * here, then wait for all I/O to complete. Data is frozen at | |
647 | * that point. Metadata is not frozen, transactions can still | |
648 | * occur here so don't bother flushing the buftarg (i.e | |
649 | * SYNC_QUIESCE) because it'll just get dirty again. | |
650 | */ | |
516b2e7c | 651 | flags = SYNC_DATA_QUIESCE; |
2823945f | 652 | } else |
e893bffd | 653 | flags = SYNC_FSDATA; |
1da177e4 | 654 | |
745f6919 | 655 | error = xfs_sync(mp, flags); |
1da177e4 LT |
656 | sb->s_dirt = 0; |
657 | ||
658 | if (unlikely(laptop_mode)) { | |
74394496 | 659 | int prev_sync_seq = mp->m_sync_seq; |
1da177e4 LT |
660 | |
661 | /* | |
662 | * The disk must be active because we're syncing. | |
663 | * We schedule xfssyncd now (now that the disk is | |
664 | * active) instead of later (when it might not be). | |
665 | */ | |
74394496 | 666 | wake_up_process(mp->m_sync_task); |
1da177e4 LT |
667 | /* |
668 | * We have to wait for the sync iteration to complete. | |
669 | * If we don't, the disk activity caused by the sync | |
670 | * will come after the sync is completed, and that | |
671 | * triggers another sync from laptop mode. | |
672 | */ | |
74394496 CH |
673 | wait_event(mp->m_wait_single_sync_task, |
674 | mp->m_sync_seq != prev_sync_seq); | |
1da177e4 LT |
675 | } |
676 | ||
677 | return -error; | |
678 | } | |
679 | ||
680 | STATIC int | |
a50cd269 | 681 | xfs_fs_statfs( |
726c3342 | 682 | struct dentry *dentry, |
1da177e4 LT |
683 | struct kstatfs *statp) |
684 | { | |
4ca488eb CH |
685 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
686 | xfs_sb_t *sbp = &mp->m_sb; | |
687 | __uint64_t fakeinos, id; | |
688 | xfs_extlen_t lsize; | |
689 | ||
690 | statp->f_type = XFS_SB_MAGIC; | |
691 | statp->f_namelen = MAXNAMELEN - 1; | |
692 | ||
693 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
694 | statp->f_fsid.val[0] = (u32)id; | |
695 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
696 | ||
697 | xfs_icsb_sync_counters_flags(mp, XFS_ICSB_LAZY_COUNT); | |
698 | ||
699 | spin_lock(&mp->m_sb_lock); | |
700 | statp->f_bsize = sbp->sb_blocksize; | |
701 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
702 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
703 | statp->f_bfree = statp->f_bavail = | |
704 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
705 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
706 | #if XFS_BIG_INUMS | |
707 | fakeinos += mp->m_inoadd; | |
708 | #endif | |
709 | statp->f_files = | |
710 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
711 | if (mp->m_maxicount) | |
712 | #if XFS_BIG_INUMS | |
713 | if (!mp->m_inoadd) | |
714 | #endif | |
715 | statp->f_files = min_t(typeof(statp->f_files), | |
716 | statp->f_files, | |
717 | mp->m_maxicount); | |
718 | statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
719 | spin_unlock(&mp->m_sb_lock); | |
720 | ||
721 | XFS_QM_DQSTATVFS(XFS_I(dentry->d_inode), statp); | |
722 | return 0; | |
1da177e4 LT |
723 | } |
724 | ||
725 | STATIC int | |
a50cd269 | 726 | xfs_fs_remount( |
1da177e4 LT |
727 | struct super_block *sb, |
728 | int *flags, | |
729 | char *options) | |
730 | { | |
745f6919 | 731 | struct xfs_mount *mp = XFS_M(sb); |
764d1f89 | 732 | struct xfs_mount_args *args = xfs_args_allocate(sb, 0); |
1da177e4 LT |
733 | int error; |
734 | ||
745f6919 | 735 | error = xfs_parseargs(mp, options, args, 1); |
1da177e4 | 736 | if (!error) |
745f6919 | 737 | error = xfs_mntupdate(mp, flags, args); |
1da177e4 LT |
738 | kmem_free(args, sizeof(*args)); |
739 | return -error; | |
740 | } | |
741 | ||
9909c4aa CH |
742 | /* |
743 | * Second stage of a freeze. The data is already frozen so we only | |
744 | * need to take care of themetadata. Once that's done write a dummy | |
745 | * record to dirty the log in case of a crash while frozen. | |
746 | */ | |
1da177e4 | 747 | STATIC void |
a50cd269 | 748 | xfs_fs_lockfs( |
1da177e4 LT |
749 | struct super_block *sb) |
750 | { | |
9909c4aa CH |
751 | struct xfs_mount *mp = XFS_M(sb); |
752 | ||
753 | xfs_attr_quiesce(mp); | |
754 | xfs_fs_log_dummy(mp); | |
1da177e4 LT |
755 | } |
756 | ||
757 | STATIC int | |
a50cd269 | 758 | xfs_fs_show_options( |
1da177e4 LT |
759 | struct seq_file *m, |
760 | struct vfsmount *mnt) | |
761 | { | |
745f6919 | 762 | return -xfs_showargs(XFS_M(mnt->mnt_sb), m); |
1da177e4 LT |
763 | } |
764 | ||
ee34807a | 765 | STATIC int |
a50cd269 | 766 | xfs_fs_quotasync( |
ee34807a NS |
767 | struct super_block *sb, |
768 | int type) | |
769 | { | |
b09cc771 | 770 | return -XFS_QM_QUOTACTL(XFS_M(sb), Q_XQUOTASYNC, 0, NULL); |
ee34807a NS |
771 | } |
772 | ||
1da177e4 | 773 | STATIC int |
a50cd269 | 774 | xfs_fs_getxstate( |
1da177e4 LT |
775 | struct super_block *sb, |
776 | struct fs_quota_stat *fqs) | |
777 | { | |
b09cc771 | 778 | return -XFS_QM_QUOTACTL(XFS_M(sb), Q_XGETQSTAT, 0, (caddr_t)fqs); |
1da177e4 LT |
779 | } |
780 | ||
781 | STATIC int | |
a50cd269 | 782 | xfs_fs_setxstate( |
1da177e4 LT |
783 | struct super_block *sb, |
784 | unsigned int flags, | |
785 | int op) | |
786 | { | |
b09cc771 | 787 | return -XFS_QM_QUOTACTL(XFS_M(sb), op, 0, (caddr_t)&flags); |
1da177e4 LT |
788 | } |
789 | ||
790 | STATIC int | |
a50cd269 | 791 | xfs_fs_getxquota( |
1da177e4 LT |
792 | struct super_block *sb, |
793 | int type, | |
794 | qid_t id, | |
795 | struct fs_disk_quota *fdq) | |
796 | { | |
b09cc771 | 797 | return -XFS_QM_QUOTACTL(XFS_M(sb), |
b83bd138 NS |
798 | (type == USRQUOTA) ? Q_XGETQUOTA : |
799 | ((type == GRPQUOTA) ? Q_XGETGQUOTA : | |
800 | Q_XGETPQUOTA), id, (caddr_t)fdq); | |
1da177e4 LT |
801 | } |
802 | ||
803 | STATIC int | |
a50cd269 | 804 | xfs_fs_setxquota( |
1da177e4 LT |
805 | struct super_block *sb, |
806 | int type, | |
807 | qid_t id, | |
808 | struct fs_disk_quota *fdq) | |
809 | { | |
b09cc771 | 810 | return -XFS_QM_QUOTACTL(XFS_M(sb), |
b83bd138 NS |
811 | (type == USRQUOTA) ? Q_XSETQLIM : |
812 | ((type == GRPQUOTA) ? Q_XSETGQLIM : | |
813 | Q_XSETPQLIM), id, (caddr_t)fdq); | |
1da177e4 LT |
814 | } |
815 | ||
816 | STATIC int | |
a50cd269 | 817 | xfs_fs_fill_super( |
1da177e4 LT |
818 | struct super_block *sb, |
819 | void *data, | |
820 | int silent) | |
821 | { | |
0a74cd19 | 822 | struct inode *rootvp; |
745f6919 | 823 | struct xfs_mount *mp = NULL; |
764d1f89 | 824 | struct xfs_mount_args *args = xfs_args_allocate(sb, silent); |
b83bd138 | 825 | int error; |
1da177e4 | 826 | |
745f6919 | 827 | mp = xfs_mount_init(); |
1da177e4 | 828 | |
74394496 CH |
829 | INIT_LIST_HEAD(&mp->m_sync_list); |
830 | spin_lock_init(&mp->m_sync_lock); | |
831 | init_waitqueue_head(&mp->m_wait_single_sync_task); | |
832 | ||
b267ce99 CH |
833 | mp->m_super = sb; |
834 | sb->s_fs_info = mp; | |
1da177e4 | 835 | |
bd186aa9 CH |
836 | if (sb->s_flags & MS_RDONLY) |
837 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
838 | ||
745f6919 CH |
839 | error = xfs_parseargs(mp, (char *)data, args, 0); |
840 | if (error) | |
1da177e4 | 841 | goto fail_vfsop; |
1da177e4 LT |
842 | |
843 | sb_min_blocksize(sb, BBSIZE); | |
a50cd269 | 844 | sb->s_export_op = &xfs_export_operations; |
a50cd269 NS |
845 | sb->s_qcop = &xfs_quotactl_operations; |
846 | sb->s_op = &xfs_super_operations; | |
1da177e4 | 847 | |
745f6919 CH |
848 | error = xfs_mount(mp, args, NULL); |
849 | if (error) | |
1da177e4 | 850 | goto fail_vfsop; |
1da177e4 | 851 | |
1da177e4 | 852 | sb->s_dirt = 1; |
4ca488eb CH |
853 | sb->s_magic = XFS_SB_MAGIC; |
854 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
855 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 LT |
856 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
857 | sb->s_time_gran = 1; | |
858 | set_posix_acl_flag(sb); | |
859 | ||
745f6919 | 860 | error = xfs_root(mp, &rootvp); |
1da177e4 LT |
861 | if (error) |
862 | goto fail_unmount; | |
863 | ||
ec86dc02 | 864 | sb->s_root = d_alloc_root(vn_to_inode(rootvp)); |
1da177e4 LT |
865 | if (!sb->s_root) { |
866 | error = ENOMEM; | |
867 | goto fail_vnrele; | |
868 | } | |
869 | if (is_bad_inode(sb->s_root->d_inode)) { | |
870 | error = EINVAL; | |
871 | goto fail_vnrele; | |
872 | } | |
74394496 CH |
873 | |
874 | mp->m_sync_work.w_syncer = xfs_sync_worker; | |
875 | mp->m_sync_work.w_mount = mp; | |
876 | mp->m_sync_task = kthread_run(xfssyncd, mp, "xfssyncd"); | |
877 | if (IS_ERR(mp->m_sync_task)) { | |
878 | error = -PTR_ERR(mp->m_sync_task); | |
1da177e4 | 879 | goto fail_vnrele; |
74394496 CH |
880 | } |
881 | ||
cf441eeb | 882 | xfs_itrace_exit(XFS_I(sb->s_root->d_inode)); |
1da177e4 LT |
883 | |
884 | kmem_free(args, sizeof(*args)); | |
885 | return 0; | |
886 | ||
887 | fail_vnrele: | |
888 | if (sb->s_root) { | |
889 | dput(sb->s_root); | |
890 | sb->s_root = NULL; | |
891 | } else { | |
892 | VN_RELE(rootvp); | |
893 | } | |
894 | ||
895 | fail_unmount: | |
745f6919 | 896 | xfs_unmount(mp, 0, NULL); |
1da177e4 LT |
897 | |
898 | fail_vfsop: | |
1da177e4 LT |
899 | kmem_free(args, sizeof(*args)); |
900 | return -error; | |
901 | } | |
902 | ||
454e2398 | 903 | STATIC int |
a50cd269 | 904 | xfs_fs_get_sb( |
1da177e4 LT |
905 | struct file_system_type *fs_type, |
906 | int flags, | |
907 | const char *dev_name, | |
454e2398 DH |
908 | void *data, |
909 | struct vfsmount *mnt) | |
1da177e4 | 910 | { |
454e2398 DH |
911 | return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super, |
912 | mnt); | |
a50cd269 NS |
913 | } |
914 | ||
7989cb8e | 915 | static struct super_operations xfs_super_operations = { |
a50cd269 NS |
916 | .alloc_inode = xfs_fs_alloc_inode, |
917 | .destroy_inode = xfs_fs_destroy_inode, | |
918 | .write_inode = xfs_fs_write_inode, | |
919 | .clear_inode = xfs_fs_clear_inode, | |
920 | .put_super = xfs_fs_put_super, | |
921 | .write_super = xfs_fs_write_super, | |
922 | .sync_fs = xfs_fs_sync_super, | |
923 | .write_super_lockfs = xfs_fs_lockfs, | |
924 | .statfs = xfs_fs_statfs, | |
925 | .remount_fs = xfs_fs_remount, | |
926 | .show_options = xfs_fs_show_options, | |
1da177e4 LT |
927 | }; |
928 | ||
7989cb8e | 929 | static struct quotactl_ops xfs_quotactl_operations = { |
a50cd269 NS |
930 | .quota_sync = xfs_fs_quotasync, |
931 | .get_xstate = xfs_fs_getxstate, | |
932 | .set_xstate = xfs_fs_setxstate, | |
933 | .get_xquota = xfs_fs_getxquota, | |
934 | .set_xquota = xfs_fs_setxquota, | |
1da177e4 LT |
935 | }; |
936 | ||
5085b607 | 937 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
938 | .owner = THIS_MODULE, |
939 | .name = "xfs", | |
a50cd269 | 940 | .get_sb = xfs_fs_get_sb, |
1da177e4 LT |
941 | .kill_sb = kill_block_super, |
942 | .fs_flags = FS_REQUIRES_DEV, | |
943 | }; | |
944 | ||
945 | ||
946 | STATIC int __init | |
947 | init_xfs_fs( void ) | |
948 | { | |
949 | int error; | |
1da177e4 LT |
950 | static char message[] __initdata = KERN_INFO \ |
951 | XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n"; | |
952 | ||
953 | printk(message); | |
954 | ||
1da177e4 LT |
955 | ktrace_init(64); |
956 | ||
8758280f | 957 | error = xfs_init_zones(); |
1da177e4 | 958 | if (error < 0) |
0829c360 | 959 | goto undo_zones; |
1da177e4 | 960 | |
ce8e922c | 961 | error = xfs_buf_init(); |
1da177e4 | 962 | if (error < 0) |
ce8e922c | 963 | goto undo_buffers; |
1da177e4 LT |
964 | |
965 | vn_init(); | |
966 | xfs_init(); | |
967 | uuid_init(); | |
968 | vfs_initquota(); | |
969 | ||
970 | error = register_filesystem(&xfs_fs_type); | |
971 | if (error) | |
972 | goto undo_register; | |
1da177e4 LT |
973 | return 0; |
974 | ||
975 | undo_register: | |
ce8e922c | 976 | xfs_buf_terminate(); |
1da177e4 | 977 | |
ce8e922c | 978 | undo_buffers: |
8758280f | 979 | xfs_destroy_zones(); |
1da177e4 | 980 | |
0829c360 | 981 | undo_zones: |
1da177e4 LT |
982 | return error; |
983 | } | |
984 | ||
985 | STATIC void __exit | |
986 | exit_xfs_fs( void ) | |
987 | { | |
988 | vfs_exitquota(); | |
1da177e4 LT |
989 | unregister_filesystem(&xfs_fs_type); |
990 | xfs_cleanup(); | |
ce8e922c | 991 | xfs_buf_terminate(); |
8758280f | 992 | xfs_destroy_zones(); |
1da177e4 LT |
993 | ktrace_uninit(); |
994 | } | |
995 | ||
996 | module_init(init_xfs_fs); | |
997 | module_exit(exit_xfs_fs); | |
998 | ||
999 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1000 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1001 | MODULE_LICENSE("GPL"); |