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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 LT |
5 | */ |
6 | #ifndef __XFS_MOUNT_H__ | |
7 | #define __XFS_MOUNT_H__ | |
8 | ||
ad223e60 | 9 | struct xlog; |
1da177e4 | 10 | struct xfs_inode; |
2a82b8be | 11 | struct xfs_mru_cache; |
82fa9012 | 12 | struct xfs_ail; |
7d095257 | 13 | struct xfs_quotainfo; |
0650b554 | 14 | struct xfs_da_geometry; |
07b6403a | 15 | struct xfs_perag; |
7d095257 | 16 | |
055388a3 DC |
17 | /* dynamic preallocation free space thresholds, 5% down to 1% */ |
18 | enum { | |
19 | XFS_LOWSP_1_PCNT = 0, | |
20 | XFS_LOWSP_2_PCNT, | |
21 | XFS_LOWSP_3_PCNT, | |
22 | XFS_LOWSP_4_PCNT, | |
23 | XFS_LOWSP_5_PCNT, | |
24 | XFS_LOWSP_MAX, | |
25 | }; | |
26 | ||
192852be CM |
27 | /* |
28 | * Error Configuration | |
29 | * | |
30 | * Error classes define the subsystem the configuration belongs to. | |
31 | * Error numbers define the errors that are configurable. | |
32 | */ | |
33 | enum { | |
ffd40ef6 | 34 | XFS_ERR_METADATA, |
192852be CM |
35 | XFS_ERR_CLASS_MAX, |
36 | }; | |
37 | enum { | |
ffd40ef6 | 38 | XFS_ERR_DEFAULT, |
e0a431b3 CM |
39 | XFS_ERR_EIO, |
40 | XFS_ERR_ENOSPC, | |
41 | XFS_ERR_ENODEV, | |
192852be CM |
42 | XFS_ERR_ERRNO_MAX, |
43 | }; | |
44 | ||
a5ea70d2 CM |
45 | #define XFS_ERR_RETRY_FOREVER -1 |
46 | ||
77169812 ES |
47 | /* |
48 | * Although retry_timeout is in jiffies which is normally an unsigned long, | |
49 | * we limit the retry timeout to 86400 seconds, or one day. So even a | |
50 | * signed 32-bit long is sufficient for a HZ value up to 24855. Making it | |
51 | * signed lets us store the special "-1" value, meaning retry forever. | |
52 | */ | |
192852be CM |
53 | struct xfs_error_cfg { |
54 | struct xfs_kobj kobj; | |
55 | int max_retries; | |
77169812 | 56 | long retry_timeout; /* in jiffies, -1 = infinite */ |
192852be CM |
57 | }; |
58 | ||
ab23a776 DC |
59 | /* |
60 | * Per-cpu deferred inode inactivation GC lists. | |
61 | */ | |
62 | struct xfs_inodegc { | |
63 | struct llist_head list; | |
64 | struct work_struct work; | |
65 | ||
66 | /* approximate count of inodes in the list */ | |
67 | unsigned int items; | |
40b1de00 | 68 | unsigned int shrinker_hits; |
ab23a776 DC |
69 | }; |
70 | ||
b0dff466 DC |
71 | /* |
72 | * The struct xfsmount layout is optimised to separate read-mostly variables | |
73 | * from variables that are frequently modified. We put the read-mostly variables | |
74 | * first, then place all the other variables at the end. | |
75 | * | |
76 | * Typically, read-mostly variables are those that are set at mount time and | |
77 | * never changed again, or only change rarely as a result of things like sysfs | |
78 | * knobs being tweaked. | |
79 | */ | |
1da177e4 | 80 | typedef struct xfs_mount { |
b0dff466 | 81 | struct xfs_sb m_sb; /* copy of fs superblock */ |
b267ce99 | 82 | struct super_block *m_super; |
82fa9012 | 83 | struct xfs_ail *m_ail; /* fs active log item list */ |
1da177e4 | 84 | struct xfs_buf *m_sb_bp; /* buffer for superblock */ |
fc1f8c1c NS |
85 | char *m_rtname; /* realtime device name */ |
86 | char *m_logname; /* external log device name */ | |
0650b554 DC |
87 | struct xfs_da_geometry *m_dir_geo; /* directory block geometry */ |
88 | struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */ | |
ad223e60 | 89 | struct xlog *m_log; /* log specific stuff */ |
1da177e4 LT |
90 | struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ |
91 | struct xfs_inode *m_rsumip; /* pointer to summary inode */ | |
92 | struct xfs_inode *m_rootip; /* pointer to root directory */ | |
93 | struct xfs_quotainfo *m_quotainfo; /* disk quota information */ | |
94 | xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ | |
95 | xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ | |
96 | xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ | |
0ed17f01 | 97 | struct list_head m_mount_list; /* global mount list */ |
ab23a776 DC |
98 | void __percpu *m_inodegc; /* percpu inodegc structures */ |
99 | ||
b0dff466 DC |
100 | /* |
101 | * Optional cache of rt summary level per bitmap block with the | |
102 | * invariant that m_rsum_cache[bbno] <= the minimum i for which | |
103 | * rsum[i][bbno] != 0. Reads and writes are serialized by the rsumip | |
104 | * inode lock. | |
105 | */ | |
106 | uint8_t *m_rsum_cache; | |
107 | struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ | |
108 | struct workqueue_struct *m_buf_workqueue; | |
109 | struct workqueue_struct *m_unwritten_workqueue; | |
b0dff466 | 110 | struct workqueue_struct *m_reclaim_workqueue; |
b0dff466 | 111 | struct workqueue_struct *m_sync_workqueue; |
ab23a776 DC |
112 | struct workqueue_struct *m_blockgc_wq; |
113 | struct workqueue_struct *m_inodegc_wq; | |
b0dff466 DC |
114 | |
115 | int m_bsize; /* fs logical block size */ | |
c8ce540d DW |
116 | uint8_t m_blkbit_log; /* blocklog + NBBY */ |
117 | uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ | |
118 | uint8_t m_agno_log; /* log #ag's */ | |
b0dff466 | 119 | uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ |
1da177e4 LT |
120 | uint m_blockmask; /* sb_blocksize-1 */ |
121 | uint m_blockwsize; /* sb_blocksize in words */ | |
122 | uint m_blockwmask; /* blockwsize-1 */ | |
60197e8d CH |
123 | uint m_alloc_mxr[2]; /* max alloc btree records */ |
124 | uint m_alloc_mnr[2]; /* min alloc btree records */ | |
125 | uint m_bmap_dmxr[2]; /* max bmap btree records */ | |
126 | uint m_bmap_dmnr[2]; /* min bmap btree records */ | |
035e00ac DW |
127 | uint m_rmap_mxr[2]; /* max rmap btree records */ |
128 | uint m_rmap_mnr[2]; /* min rmap btree records */ | |
1946b91c DW |
129 | uint m_refc_mxr[2]; /* max refc btree records */ |
130 | uint m_refc_mnr[2]; /* min refc btree records */ | |
7cb3efb4 DW |
131 | uint m_alloc_maxlevels; /* max alloc btree levels */ |
132 | uint m_bm_maxlevels[2]; /* max bmap btree levels */ | |
035e00ac | 133 | uint m_rmap_maxlevels; /* max rmap btree levels */ |
1946b91c | 134 | uint m_refc_maxlevels; /* max refcount btree level */ |
b74e15d7 | 135 | unsigned int m_agbtree_maxlevels; /* max level of all AG btrees */ |
8018026e | 136 | xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */ |
52548852 DW |
137 | uint m_alloc_set_aside; /* space we can't use */ |
138 | uint m_ag_max_usable; /* max space per AG */ | |
b0dff466 DC |
139 | int m_dalign; /* stripe unit */ |
140 | int m_swidth; /* stripe width */ | |
141 | xfs_agnumber_t m_maxagi; /* highest inode alloc group */ | |
142 | uint m_allocsize_log;/* min write size log bytes */ | |
143 | uint m_allocsize_blocks; /* min write size blocks */ | |
144 | int m_logbufs; /* number of log buffers */ | |
145 | int m_logbsize; /* size of each log buffer */ | |
146 | uint m_rsumlevels; /* rt summary levels */ | |
147 | uint m_rsumsize; /* size of rt summary, bytes */ | |
1da177e4 | 148 | int m_fixedfsid[2]; /* unchanged for life of FS */ |
1da177e4 | 149 | uint m_qflags; /* quota status flags */ |
a1d86e8d | 150 | uint64_t m_features; /* active filesystem features */ |
65f03d86 DW |
151 | uint64_t m_low_space[XFS_LOWSP_MAX]; |
152 | uint64_t m_low_rtexts[XFS_LOWSP_MAX]; | |
b0dff466 | 153 | struct xfs_ino_geometry m_ino_geo; /* inode geometry */ |
0eadd102 | 154 | struct xfs_trans_resv m_resv; /* precomputed res values */ |
b0dff466 | 155 | /* low free space thresholds */ |
ab23a776 | 156 | unsigned long m_opstate; /* dynamic state flags */ |
b0dff466 DC |
157 | bool m_always_cow; |
158 | bool m_fail_unmount; | |
159 | bool m_finobt_nores; /* no per-AG finobt resv. */ | |
160 | bool m_update_sb; /* sb needs update in mount */ | |
161 | ||
162 | /* | |
163 | * Bitsets of per-fs metadata that have been checked and/or are sick. | |
164 | * Callers must hold m_sb_lock to access these two fields. | |
165 | */ | |
166 | uint8_t m_fs_checked; | |
167 | uint8_t m_fs_sick; | |
168 | /* | |
169 | * Bitsets of rt metadata that have been checked and/or are sick. | |
170 | * Callers must hold m_sb_lock to access this field. | |
171 | */ | |
172 | uint8_t m_rt_checked; | |
173 | uint8_t m_rt_sick; | |
174 | ||
175 | /* | |
176 | * End of read-mostly variables. Frequently written variables and locks | |
177 | * should be placed below this comment from now on. The first variable | |
178 | * here is marked as cacheline aligned so they it is separated from | |
179 | * the read-mostly variables. | |
180 | */ | |
181 | ||
182 | spinlock_t ____cacheline_aligned m_sb_lock; /* sb counter lock */ | |
183 | struct percpu_counter m_icount; /* allocated inodes counter */ | |
184 | struct percpu_counter m_ifree; /* free inodes counter */ | |
185 | struct percpu_counter m_fdblocks; /* free block counter */ | |
2229276c DW |
186 | struct percpu_counter m_frextents; /* free rt extent counter */ |
187 | ||
b0dff466 DC |
188 | /* |
189 | * Count of data device blocks reserved for delayed allocations, | |
190 | * including indlen blocks. Does not include allocated CoW staging | |
191 | * extents or anything related to the rt device. | |
192 | */ | |
193 | struct percpu_counter m_delalloc_blks; | |
16eaab83 BF |
194 | /* |
195 | * Global count of allocation btree blocks in use across all AGs. Only | |
196 | * used when perag reservation is enabled. Helps prevent block | |
197 | * reservation from attempting to reserve allocation btree blocks. | |
198 | */ | |
199 | atomic64_t m_allocbt_blks; | |
b0dff466 DC |
200 | |
201 | struct radix_tree_root m_perag_tree; /* per-ag accounting info */ | |
202 | spinlock_t m_perag_lock; /* lock for m_perag_tree */ | |
c8ce540d DW |
203 | uint64_t m_resblks; /* total reserved blocks */ |
204 | uint64_t m_resblks_avail;/* available reserved blocks */ | |
205 | uint64_t m_resblks_save; /* reserved blks @ remount,ro */ | |
a7b339f1 | 206 | struct delayed_work m_reclaim_work; /* background inode reclaim */ |
a31b1d3d | 207 | struct xfs_kobj m_kobj; |
192852be | 208 | struct xfs_kobj m_error_kobj; |
ffd40ef6 | 209 | struct xfs_kobj m_error_meta_kobj; |
192852be | 210 | struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX]; |
225e4635 | 211 | struct xstats m_stats; /* per-fs stats */ |
b0dff466 DC |
212 | xfs_agnumber_t m_agfrotor; /* last ag where space found */ |
213 | xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ | |
214 | spinlock_t m_agirotor_lock;/* .. and lock protecting it */ | |
aa6bf01d | 215 | |
40b1de00 DW |
216 | /* Memory shrinker to throttle and reprioritize inodegc */ |
217 | struct shrinker m_inodegc_shrinker; | |
f0f7a674 DW |
218 | /* |
219 | * Workqueue item so that we can coalesce multiple inode flush attempts | |
220 | * into a single flush. | |
221 | */ | |
222 | struct work_struct m_flush_inodes_work; | |
52785112 CH |
223 | |
224 | /* | |
225 | * Generation of the filesysyem layout. This is incremented by each | |
226 | * growfs, and used by the pNFS server to ensure the client updates | |
227 | * its view of the block device once it gets a layout that might | |
228 | * reference the newly added blocks. Does not need to be persistent | |
229 | * as long as we only allow file system size increments, but if we | |
230 | * ever support shrinks it would have to be persisted in addition | |
231 | * to various other kinds of pain inflicted on the pNFS server. | |
232 | */ | |
c8ce540d | 233 | uint32_t m_generation; |
b0dff466 | 234 | struct mutex m_growlock; /* growfs mutex */ |
801cc4e1 BF |
235 | |
236 | #ifdef DEBUG | |
31965ef3 DW |
237 | /* |
238 | * Frequency with which errors are injected. Replaces xfs_etest; the | |
239 | * value stored in here is the inverse of the frequency with which the | |
240 | * error triggers. 1 = always, 2 = half the time, etc. | |
241 | */ | |
242 | unsigned int *m_errortag; | |
c6840101 | 243 | struct xfs_kobj m_errortag_kobj; |
801cc4e1 | 244 | #endif |
1da177e4 LT |
245 | } xfs_mount_t; |
246 | ||
ef325959 DW |
247 | #define M_IGEO(mp) (&(mp)->m_ino_geo) |
248 | ||
a1d86e8d DC |
249 | /* |
250 | * Flags for m_features. | |
251 | * | |
252 | * These are all the active features in the filesystem, regardless of how | |
253 | * they are configured. | |
254 | */ | |
255 | #define XFS_FEAT_ATTR (1ULL << 0) /* xattrs present in fs */ | |
256 | #define XFS_FEAT_NLINK (1ULL << 1) /* 32 bit link counts */ | |
257 | #define XFS_FEAT_QUOTA (1ULL << 2) /* quota active */ | |
258 | #define XFS_FEAT_ALIGN (1ULL << 3) /* inode alignment */ | |
259 | #define XFS_FEAT_DALIGN (1ULL << 4) /* data alignment */ | |
260 | #define XFS_FEAT_LOGV2 (1ULL << 5) /* version 2 logs */ | |
261 | #define XFS_FEAT_SECTOR (1ULL << 6) /* sector size > 512 bytes */ | |
262 | #define XFS_FEAT_EXTFLG (1ULL << 7) /* unwritten extents */ | |
263 | #define XFS_FEAT_ASCIICI (1ULL << 8) /* ASCII only case-insens. */ | |
264 | #define XFS_FEAT_LAZYSBCOUNT (1ULL << 9) /* Superblk counters */ | |
265 | #define XFS_FEAT_ATTR2 (1ULL << 10) /* dynamic attr fork */ | |
266 | #define XFS_FEAT_PARENT (1ULL << 11) /* parent pointers */ | |
267 | #define XFS_FEAT_PROJID32 (1ULL << 12) /* 32 bit project id */ | |
268 | #define XFS_FEAT_CRC (1ULL << 13) /* metadata CRCs */ | |
269 | #define XFS_FEAT_V3INODES (1ULL << 14) /* Version 3 inodes */ | |
270 | #define XFS_FEAT_PQUOTINO (1ULL << 15) /* non-shared proj/grp quotas */ | |
271 | #define XFS_FEAT_FTYPE (1ULL << 16) /* inode type in dir */ | |
272 | #define XFS_FEAT_FINOBT (1ULL << 17) /* free inode btree */ | |
273 | #define XFS_FEAT_RMAPBT (1ULL << 18) /* reverse map btree */ | |
274 | #define XFS_FEAT_REFLINK (1ULL << 19) /* reflinked files */ | |
275 | #define XFS_FEAT_SPINODES (1ULL << 20) /* sparse inode chunks */ | |
276 | #define XFS_FEAT_META_UUID (1ULL << 21) /* metadata UUID */ | |
277 | #define XFS_FEAT_REALTIME (1ULL << 22) /* realtime device present */ | |
278 | #define XFS_FEAT_INOBTCNT (1ULL << 23) /* inobt block counts */ | |
279 | #define XFS_FEAT_BIGTIME (1ULL << 24) /* large timestamps */ | |
280 | #define XFS_FEAT_NEEDSREPAIR (1ULL << 25) /* needs xfs_repair */ | |
919819f5 | 281 | #define XFS_FEAT_NREXT64 (1ULL << 26) /* large extent counters */ |
a1d86e8d | 282 | |
8970a5b8 DC |
283 | /* Mount features */ |
284 | #define XFS_FEAT_NOATTR2 (1ULL << 48) /* disable attr2 creation */ | |
285 | #define XFS_FEAT_NOALIGN (1ULL << 49) /* ignore alignment */ | |
286 | #define XFS_FEAT_ALLOCSIZE (1ULL << 50) /* user specified allocation size */ | |
287 | #define XFS_FEAT_LARGE_IOSIZE (1ULL << 51) /* report large preferred | |
288 | * I/O size in stat() */ | |
289 | #define XFS_FEAT_WSYNC (1ULL << 52) /* synchronous metadata ops */ | |
290 | #define XFS_FEAT_DIRSYNC (1ULL << 53) /* synchronous directory ops */ | |
291 | #define XFS_FEAT_DISCARD (1ULL << 54) /* discard unused blocks */ | |
292 | #define XFS_FEAT_GRPID (1ULL << 55) /* group-ID assigned from directory */ | |
293 | #define XFS_FEAT_SMALL_INUMS (1ULL << 56) /* user wants 32bit inodes */ | |
294 | #define XFS_FEAT_IKEEP (1ULL << 57) /* keep empty inode clusters*/ | |
295 | #define XFS_FEAT_SWALLOC (1ULL << 58) /* stripe width allocation */ | |
296 | #define XFS_FEAT_FILESTREAMS (1ULL << 59) /* use filestreams allocator */ | |
297 | #define XFS_FEAT_DAX_ALWAYS (1ULL << 60) /* DAX always enabled */ | |
298 | #define XFS_FEAT_DAX_NEVER (1ULL << 61) /* DAX never enabled */ | |
299 | #define XFS_FEAT_NORECOVERY (1ULL << 62) /* no recovery - dirty fs */ | |
300 | #define XFS_FEAT_NOUUID (1ULL << 63) /* ignore uuid during mount */ | |
301 | ||
a1d86e8d DC |
302 | #define __XFS_HAS_FEAT(name, NAME) \ |
303 | static inline bool xfs_has_ ## name (struct xfs_mount *mp) \ | |
304 | { \ | |
305 | return mp->m_features & XFS_FEAT_ ## NAME; \ | |
306 | } | |
307 | ||
308 | /* Some features can be added dynamically so they need a set wrapper, too. */ | |
309 | #define __XFS_ADD_FEAT(name, NAME) \ | |
310 | __XFS_HAS_FEAT(name, NAME); \ | |
311 | static inline void xfs_add_ ## name (struct xfs_mount *mp) \ | |
312 | { \ | |
313 | mp->m_features |= XFS_FEAT_ ## NAME; \ | |
314 | xfs_sb_version_add ## name(&mp->m_sb); \ | |
315 | } | |
316 | ||
8970a5b8 | 317 | /* Superblock features */ |
a1d86e8d DC |
318 | __XFS_ADD_FEAT(attr, ATTR) |
319 | __XFS_HAS_FEAT(nlink, NLINK) | |
320 | __XFS_ADD_FEAT(quota, QUOTA) | |
321 | __XFS_HAS_FEAT(align, ALIGN) | |
322 | __XFS_HAS_FEAT(dalign, DALIGN) | |
323 | __XFS_HAS_FEAT(logv2, LOGV2) | |
324 | __XFS_HAS_FEAT(sector, SECTOR) | |
325 | __XFS_HAS_FEAT(extflg, EXTFLG) | |
326 | __XFS_HAS_FEAT(asciici, ASCIICI) | |
327 | __XFS_HAS_FEAT(lazysbcount, LAZYSBCOUNT) | |
328 | __XFS_ADD_FEAT(attr2, ATTR2) | |
329 | __XFS_HAS_FEAT(parent, PARENT) | |
330 | __XFS_ADD_FEAT(projid32, PROJID32) | |
331 | __XFS_HAS_FEAT(crc, CRC) | |
332 | __XFS_HAS_FEAT(v3inodes, V3INODES) | |
333 | __XFS_HAS_FEAT(pquotino, PQUOTINO) | |
334 | __XFS_HAS_FEAT(ftype, FTYPE) | |
335 | __XFS_HAS_FEAT(finobt, FINOBT) | |
336 | __XFS_HAS_FEAT(rmapbt, RMAPBT) | |
337 | __XFS_HAS_FEAT(reflink, REFLINK) | |
338 | __XFS_HAS_FEAT(sparseinodes, SPINODES) | |
339 | __XFS_HAS_FEAT(metauuid, META_UUID) | |
340 | __XFS_HAS_FEAT(realtime, REALTIME) | |
38c26bfd DC |
341 | __XFS_HAS_FEAT(inobtcounts, INOBTCNT) |
342 | __XFS_HAS_FEAT(bigtime, BIGTIME) | |
343 | __XFS_HAS_FEAT(needsrepair, NEEDSREPAIR) | |
919819f5 | 344 | __XFS_HAS_FEAT(large_extent_counts, NREXT64) |
a1d86e8d | 345 | |
8970a5b8 DC |
346 | /* |
347 | * Mount features | |
348 | * | |
2e973b2c DC |
349 | * These do not change dynamically - features that can come and go, such as 32 |
350 | * bit inodes and read-only state, are kept as operational state rather than | |
8970a5b8 DC |
351 | * features. |
352 | */ | |
353 | __XFS_HAS_FEAT(noattr2, NOATTR2) | |
354 | __XFS_HAS_FEAT(noalign, NOALIGN) | |
355 | __XFS_HAS_FEAT(allocsize, ALLOCSIZE) | |
356 | __XFS_HAS_FEAT(large_iosize, LARGE_IOSIZE) | |
357 | __XFS_HAS_FEAT(wsync, WSYNC) | |
358 | __XFS_HAS_FEAT(dirsync, DIRSYNC) | |
359 | __XFS_HAS_FEAT(discard, DISCARD) | |
360 | __XFS_HAS_FEAT(grpid, GRPID) | |
361 | __XFS_HAS_FEAT(small_inums, SMALL_INUMS) | |
362 | __XFS_HAS_FEAT(ikeep, IKEEP) | |
363 | __XFS_HAS_FEAT(swalloc, SWALLOC) | |
364 | __XFS_HAS_FEAT(filestreams, FILESTREAMS) | |
365 | __XFS_HAS_FEAT(dax_always, DAX_ALWAYS) | |
366 | __XFS_HAS_FEAT(dax_never, DAX_NEVER) | |
367 | __XFS_HAS_FEAT(norecovery, NORECOVERY) | |
368 | __XFS_HAS_FEAT(nouuid, NOUUID) | |
369 | ||
1da177e4 | 370 | /* |
2e973b2c DC |
371 | * Operational mount state flags |
372 | * | |
373 | * Use these with atomic bit ops only! | |
1da177e4 | 374 | */ |
2e973b2c DC |
375 | #define XFS_OPSTATE_UNMOUNTING 0 /* filesystem is unmounting */ |
376 | #define XFS_OPSTATE_CLEAN 1 /* mount was clean */ | |
377 | #define XFS_OPSTATE_SHUTDOWN 2 /* stop all fs operations */ | |
378 | #define XFS_OPSTATE_INODE32 3 /* inode32 allocator active */ | |
379 | #define XFS_OPSTATE_READONLY 4 /* read-only fs */ | |
cbe4dab1 | 380 | |
ab23a776 DC |
381 | /* |
382 | * If set, inactivation worker threads will be scheduled to process queued | |
383 | * inodegc work. If not, queued inodes remain in memory waiting to be | |
384 | * processed. | |
385 | */ | |
2e973b2c | 386 | #define XFS_OPSTATE_INODEGC_ENABLED 5 |
6f649091 DW |
387 | /* |
388 | * If set, background speculative prealloc gc worker threads will be scheduled | |
389 | * to process queued blockgc work. If not, inodes retain their preallocations | |
390 | * until explicitly deleted. | |
391 | */ | |
2e973b2c | 392 | #define XFS_OPSTATE_BLOCKGC_ENABLED 6 |
ab23a776 | 393 | |
df5660cf DW |
394 | /* Kernel has logged a warning about online fsck being used on this fs. */ |
395 | #define XFS_OPSTATE_WARNED_SCRUB 7 | |
396 | /* Kernel has logged a warning about shrink being used on this fs. */ | |
397 | #define XFS_OPSTATE_WARNED_SHRINK 8 | |
202865cc DW |
398 | /* Kernel has logged a warning about logged xattr updates being used. */ |
399 | #define XFS_OPSTATE_WARNED_LARP 9 | |
df5660cf | 400 | |
ab23a776 DC |
401 | #define __XFS_IS_OPSTATE(name, NAME) \ |
402 | static inline bool xfs_is_ ## name (struct xfs_mount *mp) \ | |
403 | { \ | |
404 | return test_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ | |
405 | } \ | |
406 | static inline bool xfs_clear_ ## name (struct xfs_mount *mp) \ | |
407 | { \ | |
408 | return test_and_clear_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ | |
409 | } \ | |
410 | static inline bool xfs_set_ ## name (struct xfs_mount *mp) \ | |
411 | { \ | |
412 | return test_and_set_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ | |
413 | } | |
414 | ||
2e973b2c DC |
415 | __XFS_IS_OPSTATE(unmounting, UNMOUNTING) |
416 | __XFS_IS_OPSTATE(clean, CLEAN) | |
417 | __XFS_IS_OPSTATE(shutdown, SHUTDOWN) | |
418 | __XFS_IS_OPSTATE(inode32, INODE32) | |
419 | __XFS_IS_OPSTATE(readonly, READONLY) | |
ab23a776 | 420 | __XFS_IS_OPSTATE(inodegc_enabled, INODEGC_ENABLED) |
6f649091 | 421 | __XFS_IS_OPSTATE(blockgc_enabled, BLOCKGC_ENABLED) |
ab23a776 | 422 | |
df5660cf DW |
423 | static inline bool |
424 | xfs_should_warn(struct xfs_mount *mp, long nr) | |
425 | { | |
426 | return !test_and_set_bit(nr, &mp->m_opstate); | |
427 | } | |
428 | ||
ab23a776 | 429 | #define XFS_OPSTATE_STRINGS \ |
2e973b2c DC |
430 | { (1UL << XFS_OPSTATE_UNMOUNTING), "unmounting" }, \ |
431 | { (1UL << XFS_OPSTATE_CLEAN), "clean" }, \ | |
432 | { (1UL << XFS_OPSTATE_SHUTDOWN), "shutdown" }, \ | |
433 | { (1UL << XFS_OPSTATE_INODE32), "inode32" }, \ | |
434 | { (1UL << XFS_OPSTATE_READONLY), "read_only" }, \ | |
6f649091 | 435 | { (1UL << XFS_OPSTATE_INODEGC_ENABLED), "inodegc" }, \ |
df5660cf DW |
436 | { (1UL << XFS_OPSTATE_BLOCKGC_ENABLED), "blockgc" }, \ |
437 | { (1UL << XFS_OPSTATE_WARNED_SCRUB), "wscrub" }, \ | |
202865cc DW |
438 | { (1UL << XFS_OPSTATE_WARNED_SHRINK), "wshrink" }, \ |
439 | { (1UL << XFS_OPSTATE_WARNED_LARP), "wlarp" } | |
ab23a776 | 440 | |
1da177e4 | 441 | /* |
1f443ad7 NS |
442 | * Max and min values for mount-option defined I/O |
443 | * preallocation sizes. | |
1da177e4 | 444 | */ |
1f443ad7 | 445 | #define XFS_MAX_IO_LOG 30 /* 1G */ |
1da177e4 LT |
446 | #define XFS_MIN_IO_LOG PAGE_SHIFT |
447 | ||
2eb7550d | 448 | void xfs_do_force_shutdown(struct xfs_mount *mp, uint32_t flags, char *fname, |
745f6919 | 449 | int lnnum); |
1da177e4 | 450 | #define xfs_force_shutdown(m,f) \ |
745f6919 | 451 | xfs_do_force_shutdown(m, f, __FILE__, __LINE__) |
1da177e4 | 452 | |
2eb7550d DC |
453 | #define SHUTDOWN_META_IO_ERROR (1u << 0) /* write attempt to metadata failed */ |
454 | #define SHUTDOWN_LOG_IO_ERROR (1u << 1) /* write attempt to the log failed */ | |
455 | #define SHUTDOWN_FORCE_UMOUNT (1u << 2) /* shutdown from a forced unmount */ | |
456 | #define SHUTDOWN_CORRUPT_INCORE (1u << 3) /* corrupt in-memory structures */ | |
2b5decd0 | 457 | |
7f89c838 DW |
458 | #define XFS_SHUTDOWN_STRINGS \ |
459 | { SHUTDOWN_META_IO_ERROR, "metadata_io" }, \ | |
460 | { SHUTDOWN_LOG_IO_ERROR, "log_io" }, \ | |
461 | { SHUTDOWN_FORCE_UMOUNT, "force_umount" }, \ | |
462 | { SHUTDOWN_CORRUPT_INCORE, "corruption" } | |
463 | ||
1da177e4 LT |
464 | /* |
465 | * Flags for xfs_mountfs | |
466 | */ | |
764d1f89 | 467 | #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ |
1da177e4 | 468 | |
a844f451 NS |
469 | static inline xfs_agnumber_t |
470 | xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) | |
1da177e4 | 471 | { |
4f1adf33 | 472 | xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); |
a844f451 NS |
473 | do_div(ld, mp->m_sb.sb_agblocks); |
474 | return (xfs_agnumber_t) ld; | |
1da177e4 LT |
475 | } |
476 | ||
a844f451 NS |
477 | static inline xfs_agblock_t |
478 | xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) | |
1da177e4 | 479 | { |
4f1adf33 | 480 | xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); |
a844f451 | 481 | return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); |
1da177e4 LT |
482 | } |
483 | ||
07b6403a DC |
484 | int xfs_buf_hash_init(struct xfs_perag *pag); |
485 | void xfs_buf_hash_destroy(struct xfs_perag *pag); | |
6031e73a | 486 | |
af3b6382 | 487 | extern void xfs_uuid_table_free(void); |
c8ce540d | 488 | extern uint64_t xfs_default_resblks(xfs_mount_t *mp); |
4249023a | 489 | extern int xfs_mountfs(xfs_mount_t *mp); |
41b5c2e7 | 490 | extern void xfs_unmountfs(xfs_mount_t *); |
964aa8d9 | 491 | |
7d6f07d2 DW |
492 | /* |
493 | * Deltas for the block count can vary from 1 to very large, but lock contention | |
494 | * only occurs on frequent small block count updates such as in the delayed | |
495 | * allocation path for buffered writes (page a time updates). Hence we set | |
496 | * a large batch count (1024) to minimise global counter updates except when | |
497 | * we get near to ENOSPC and we have to be very accurate with our updates. | |
498 | */ | |
499 | #define XFS_FDBLOCKS_BATCH 1024 | |
500 | ||
c8c56825 DW |
501 | /* |
502 | * Estimate the amount of free space that is not available to userspace and is | |
503 | * not explicitly reserved from the incore fdblocks. This includes: | |
504 | * | |
505 | * - The minimum number of blocks needed to support splitting a bmap btree | |
506 | * - The blocks currently in use by the freespace btrees because they record | |
507 | * the actual blocks that will fill per-AG metadata space reservations | |
508 | */ | |
509 | static inline uint64_t | |
510 | xfs_fdblocks_unavailable( | |
511 | struct xfs_mount *mp) | |
512 | { | |
513 | return mp->m_alloc_set_aside + atomic64_read(&mp->m_allocbt_blks); | |
514 | } | |
515 | ||
2229276c DW |
516 | int xfs_mod_freecounter(struct xfs_mount *mp, struct percpu_counter *counter, |
517 | int64_t delta, bool rsvd); | |
518 | ||
519 | static inline int | |
520 | xfs_mod_fdblocks(struct xfs_mount *mp, int64_t delta, bool reserved) | |
521 | { | |
522 | return xfs_mod_freecounter(mp, &mp->m_fdblocks, delta, reserved); | |
523 | } | |
524 | ||
525 | static inline int | |
526 | xfs_mod_frextents(struct xfs_mount *mp, int64_t delta) | |
527 | { | |
528 | return xfs_mod_freecounter(mp, &mp->m_frextents, delta, false); | |
529 | } | |
bab98bbe | 530 | |
764d1f89 | 531 | extern int xfs_readsb(xfs_mount_t *, int); |
1da177e4 | 532 | extern void xfs_freesb(xfs_mount_t *); |
91ee575f | 533 | extern bool xfs_fs_writable(struct xfs_mount *mp, int level); |
c8ce540d | 534 | extern int xfs_sb_validate_fsb_count(struct xfs_sb *, uint64_t); |
1da177e4 | 535 | |
d7658d48 CH |
536 | extern int xfs_dev_is_read_only(struct xfs_mount *, char *); |
537 | ||
055388a3 DC |
538 | extern void xfs_set_low_space_thresholds(struct xfs_mount *); |
539 | ||
3fbbbea3 DC |
540 | int xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb, |
541 | xfs_off_t count_fsb); | |
542 | ||
df309390 CM |
543 | struct xfs_error_cfg * xfs_error_get_cfg(struct xfs_mount *mp, |
544 | int error_class, int error); | |
f467cad9 | 545 | void xfs_force_summary_recalc(struct xfs_mount *mp); |
908ce71e DW |
546 | int xfs_add_incompat_log_feature(struct xfs_mount *mp, uint32_t feature); |
547 | bool xfs_clear_incompat_log_features(struct xfs_mount *mp); | |
9fe82b8c | 548 | void xfs_mod_delalloc(struct xfs_mount *mp, int64_t delta); |
df309390 | 549 | |
1da177e4 | 550 | #endif /* __XFS_MOUNT_H__ */ |