1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. |
5 | */ |
6 | #ifndef __XFS_MOUNT_H__ |
7 | #define __XFS_MOUNT_H__ |
8 | |
9 | struct xlog; |
10 | struct xfs_inode; |
11 | struct xfs_mru_cache; |
12 | struct xfs_ail; |
13 | struct xfs_quotainfo; |
14 | struct xfs_da_geometry; |
15 | struct xfs_perag; |
16 | |
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 | |
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 { |
34 | XFS_ERR_METADATA, |
35 | XFS_ERR_CLASS_MAX, |
36 | }; |
37 | enum { |
38 | XFS_ERR_DEFAULT, |
39 | XFS_ERR_EIO, |
40 | XFS_ERR_ENOSPC, |
41 | XFS_ERR_ENODEV, |
42 | XFS_ERR_ERRNO_MAX, |
43 | }; |
44 | |
45 | #define XFS_ERR_RETRY_FOREVER -1 |
46 | |
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 | */ |
53 | struct xfs_error_cfg { |
54 | struct xfs_kobj kobj; |
55 | int max_retries; |
56 | long retry_timeout; /* in jiffies, -1 = infinite */ |
57 | }; |
58 | |
59 | /* |
60 | * Per-cpu deferred inode inactivation GC lists. |
61 | */ |
62 | struct xfs_inodegc { |
63 | struct xfs_mount *mp; |
64 | struct llist_head list; |
65 | struct delayed_work work; |
66 | int error; |
67 | |
68 | /* approximate count of inodes in the list */ |
69 | unsigned int items; |
70 | unsigned int shrinker_hits; |
71 | unsigned int cpu; |
72 | }; |
73 | |
74 | /* |
75 | * The struct xfsmount layout is optimised to separate read-mostly variables |
76 | * from variables that are frequently modified. We put the read-mostly variables |
77 | * first, then place all the other variables at the end. |
78 | * |
79 | * Typically, read-mostly variables are those that are set at mount time and |
80 | * never changed again, or only change rarely as a result of things like sysfs |
81 | * knobs being tweaked. |
82 | */ |
83 | typedef struct xfs_mount { |
84 | struct xfs_sb m_sb; /* copy of fs superblock */ |
85 | struct super_block *m_super; |
86 | struct xfs_ail *m_ail; /* fs active log item list */ |
87 | struct xfs_buf *m_sb_bp; /* buffer for superblock */ |
88 | char *m_rtname; /* realtime device name */ |
89 | char *m_logname; /* external log device name */ |
90 | struct xfs_da_geometry *m_dir_geo; /* directory block geometry */ |
91 | struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */ |
92 | struct xlog *m_log; /* log specific stuff */ |
93 | struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ |
94 | struct xfs_inode *m_rsumip; /* pointer to summary inode */ |
95 | struct xfs_inode *m_rootip; /* pointer to root directory */ |
96 | struct xfs_quotainfo *m_quotainfo; /* disk quota information */ |
97 | xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ |
98 | xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ |
99 | xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ |
100 | void __percpu *m_inodegc; /* percpu inodegc structures */ |
101 | |
102 | /* |
103 | * Optional cache of rt summary level per bitmap block with the |
104 | * invariant that m_rsum_cache[bbno] > the maximum i for which |
105 | * rsum[i][bbno] != 0, or 0 if rsum[i][bbno] == 0 for all i. |
106 | * Reads and writes are serialized by the rsumip inode lock. |
107 | */ |
108 | uint8_t *m_rsum_cache; |
109 | struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ |
110 | struct workqueue_struct *m_buf_workqueue; |
111 | struct workqueue_struct *m_unwritten_workqueue; |
112 | struct workqueue_struct *m_reclaim_workqueue; |
113 | struct workqueue_struct *m_sync_workqueue; |
114 | struct workqueue_struct *m_blockgc_wq; |
115 | struct workqueue_struct *m_inodegc_wq; |
116 | |
117 | int m_bsize; /* fs logical block size */ |
118 | uint8_t m_blkbit_log; /* blocklog + NBBY */ |
119 | uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ |
120 | uint8_t m_agno_log; /* log #ag's */ |
121 | uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ |
122 | int8_t m_rtxblklog; /* log2 of rextsize, if possible */ |
123 | uint m_blockmask; /* sb_blocksize-1 */ |
124 | uint m_blockwsize; /* sb_blocksize in words */ |
125 | uint m_blockwmask; /* blockwsize-1 */ |
126 | uint m_alloc_mxr[2]; /* max alloc btree records */ |
127 | uint m_alloc_mnr[2]; /* min alloc btree records */ |
128 | uint m_bmap_dmxr[2]; /* max bmap btree records */ |
129 | uint m_bmap_dmnr[2]; /* min bmap btree records */ |
130 | uint m_rmap_mxr[2]; /* max rmap btree records */ |
131 | uint m_rmap_mnr[2]; /* min rmap btree records */ |
132 | uint m_refc_mxr[2]; /* max refc btree records */ |
133 | uint m_refc_mnr[2]; /* min refc btree records */ |
134 | uint m_alloc_maxlevels; /* max alloc btree levels */ |
135 | uint m_bm_maxlevels[2]; /* max bmap btree levels */ |
136 | uint m_rmap_maxlevels; /* max rmap btree levels */ |
137 | uint m_refc_maxlevels; /* max refcount btree level */ |
138 | unsigned int m_agbtree_maxlevels; /* max level of all AG btrees */ |
139 | xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */ |
140 | uint m_alloc_set_aside; /* space we can't use */ |
141 | uint m_ag_max_usable; /* max space per AG */ |
142 | int m_dalign; /* stripe unit */ |
143 | int m_swidth; /* stripe width */ |
144 | xfs_agnumber_t m_maxagi; /* highest inode alloc group */ |
145 | uint m_allocsize_log;/* min write size log bytes */ |
146 | uint m_allocsize_blocks; /* min write size blocks */ |
147 | int m_logbufs; /* number of log buffers */ |
148 | int m_logbsize; /* size of each log buffer */ |
149 | uint m_rsumlevels; /* rt summary levels */ |
150 | uint m_rsumsize; /* size of rt summary, bytes */ |
151 | int m_fixedfsid[2]; /* unchanged for life of FS */ |
152 | uint m_qflags; /* quota status flags */ |
153 | uint64_t m_features; /* active filesystem features */ |
154 | uint64_t m_low_space[XFS_LOWSP_MAX]; |
155 | uint64_t m_low_rtexts[XFS_LOWSP_MAX]; |
156 | uint64_t m_rtxblkmask; /* rt extent block mask */ |
157 | struct xfs_ino_geometry m_ino_geo; /* inode geometry */ |
158 | struct xfs_trans_resv m_resv; /* precomputed res values */ |
159 | /* low free space thresholds */ |
160 | unsigned long m_opstate; /* dynamic state flags */ |
161 | bool m_always_cow; |
162 | bool m_fail_unmount; |
163 | bool m_finobt_nores; /* no per-AG finobt resv. */ |
164 | bool m_update_sb; /* sb needs update in mount */ |
165 | |
166 | /* |
167 | * Bitsets of per-fs metadata that have been checked and/or are sick. |
168 | * Callers must hold m_sb_lock to access these two fields. |
169 | */ |
170 | uint8_t m_fs_checked; |
171 | uint8_t m_fs_sick; |
172 | /* |
173 | * Bitsets of rt metadata that have been checked and/or are sick. |
174 | * Callers must hold m_sb_lock to access this field. |
175 | */ |
176 | uint8_t m_rt_checked; |
177 | uint8_t m_rt_sick; |
178 | |
179 | /* |
180 | * End of read-mostly variables. Frequently written variables and locks |
181 | * should be placed below this comment from now on. The first variable |
182 | * here is marked as cacheline aligned so they it is separated from |
183 | * the read-mostly variables. |
184 | */ |
185 | |
186 | spinlock_t ____cacheline_aligned m_sb_lock; /* sb counter lock */ |
187 | struct percpu_counter m_icount; /* allocated inodes counter */ |
188 | struct percpu_counter m_ifree; /* free inodes counter */ |
189 | struct percpu_counter m_fdblocks; /* free block counter */ |
190 | struct percpu_counter m_frextents; /* free rt extent counter */ |
191 | |
192 | /* |
193 | * Count of data device blocks reserved for delayed allocations, |
194 | * including indlen blocks. Does not include allocated CoW staging |
195 | * extents or anything related to the rt device. |
196 | */ |
197 | struct percpu_counter m_delalloc_blks; |
198 | /* |
199 | * Global count of allocation btree blocks in use across all AGs. Only |
200 | * used when perag reservation is enabled. Helps prevent block |
201 | * reservation from attempting to reserve allocation btree blocks. |
202 | */ |
203 | atomic64_t m_allocbt_blks; |
204 | |
205 | struct radix_tree_root m_perag_tree; /* per-ag accounting info */ |
206 | spinlock_t m_perag_lock; /* lock for m_perag_tree */ |
207 | uint64_t m_resblks; /* total reserved blocks */ |
208 | uint64_t m_resblks_avail;/* available reserved blocks */ |
209 | uint64_t m_resblks_save; /* reserved blks @ remount,ro */ |
210 | struct delayed_work m_reclaim_work; /* background inode reclaim */ |
211 | struct dentry *m_debugfs; /* debugfs parent */ |
212 | struct xfs_kobj m_kobj; |
213 | struct xfs_kobj m_error_kobj; |
214 | struct xfs_kobj m_error_meta_kobj; |
215 | struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX]; |
216 | struct xstats m_stats; /* per-fs stats */ |
217 | #ifdef CONFIG_XFS_ONLINE_SCRUB_STATS |
218 | struct xchk_stats *m_scrub_stats; |
219 | #endif |
220 | xfs_agnumber_t m_agfrotor; /* last ag where space found */ |
221 | atomic_t m_agirotor; /* last ag dir inode alloced */ |
222 | |
223 | /* Memory shrinker to throttle and reprioritize inodegc */ |
224 | struct shrinker *m_inodegc_shrinker; |
225 | /* |
226 | * Workqueue item so that we can coalesce multiple inode flush attempts |
227 | * into a single flush. |
228 | */ |
229 | struct work_struct m_flush_inodes_work; |
230 | |
231 | /* |
232 | * Generation of the filesysyem layout. This is incremented by each |
233 | * growfs, and used by the pNFS server to ensure the client updates |
234 | * its view of the block device once it gets a layout that might |
235 | * reference the newly added blocks. Does not need to be persistent |
236 | * as long as we only allow file system size increments, but if we |
237 | * ever support shrinks it would have to be persisted in addition |
238 | * to various other kinds of pain inflicted on the pNFS server. |
239 | */ |
240 | uint32_t m_generation; |
241 | struct mutex m_growlock; /* growfs mutex */ |
242 | |
243 | #ifdef DEBUG |
244 | /* |
245 | * Frequency with which errors are injected. Replaces xfs_etest; the |
246 | * value stored in here is the inverse of the frequency with which the |
247 | * error triggers. 1 = always, 2 = half the time, etc. |
248 | */ |
249 | unsigned int *m_errortag; |
250 | struct xfs_kobj m_errortag_kobj; |
251 | #endif |
252 | |
253 | /* cpus that have inodes queued for inactivation */ |
254 | struct cpumask m_inodegc_cpumask; |
255 | } xfs_mount_t; |
256 | |
257 | #define M_IGEO(mp) (&(mp)->m_ino_geo) |
258 | |
259 | /* |
260 | * Flags for m_features. |
261 | * |
262 | * These are all the active features in the filesystem, regardless of how |
263 | * they are configured. |
264 | */ |
265 | #define XFS_FEAT_ATTR (1ULL << 0) /* xattrs present in fs */ |
266 | #define XFS_FEAT_NLINK (1ULL << 1) /* 32 bit link counts */ |
267 | #define XFS_FEAT_QUOTA (1ULL << 2) /* quota active */ |
268 | #define XFS_FEAT_ALIGN (1ULL << 3) /* inode alignment */ |
269 | #define XFS_FEAT_DALIGN (1ULL << 4) /* data alignment */ |
270 | #define XFS_FEAT_LOGV2 (1ULL << 5) /* version 2 logs */ |
271 | #define XFS_FEAT_SECTOR (1ULL << 6) /* sector size > 512 bytes */ |
272 | #define XFS_FEAT_EXTFLG (1ULL << 7) /* unwritten extents */ |
273 | #define XFS_FEAT_ASCIICI (1ULL << 8) /* ASCII only case-insens. */ |
274 | #define XFS_FEAT_LAZYSBCOUNT (1ULL << 9) /* Superblk counters */ |
275 | #define XFS_FEAT_ATTR2 (1ULL << 10) /* dynamic attr fork */ |
276 | #define XFS_FEAT_PARENT (1ULL << 11) /* parent pointers */ |
277 | #define XFS_FEAT_PROJID32 (1ULL << 12) /* 32 bit project id */ |
278 | #define XFS_FEAT_CRC (1ULL << 13) /* metadata CRCs */ |
279 | #define XFS_FEAT_V3INODES (1ULL << 14) /* Version 3 inodes */ |
280 | #define XFS_FEAT_PQUOTINO (1ULL << 15) /* non-shared proj/grp quotas */ |
281 | #define XFS_FEAT_FTYPE (1ULL << 16) /* inode type in dir */ |
282 | #define XFS_FEAT_FINOBT (1ULL << 17) /* free inode btree */ |
283 | #define XFS_FEAT_RMAPBT (1ULL << 18) /* reverse map btree */ |
284 | #define XFS_FEAT_REFLINK (1ULL << 19) /* reflinked files */ |
285 | #define XFS_FEAT_SPINODES (1ULL << 20) /* sparse inode chunks */ |
286 | #define XFS_FEAT_META_UUID (1ULL << 21) /* metadata UUID */ |
287 | #define XFS_FEAT_REALTIME (1ULL << 22) /* realtime device present */ |
288 | #define XFS_FEAT_INOBTCNT (1ULL << 23) /* inobt block counts */ |
289 | #define XFS_FEAT_BIGTIME (1ULL << 24) /* large timestamps */ |
290 | #define XFS_FEAT_NEEDSREPAIR (1ULL << 25) /* needs xfs_repair */ |
291 | #define XFS_FEAT_NREXT64 (1ULL << 26) /* large extent counters */ |
292 | |
293 | /* Mount features */ |
294 | #define XFS_FEAT_NOATTR2 (1ULL << 48) /* disable attr2 creation */ |
295 | #define XFS_FEAT_NOALIGN (1ULL << 49) /* ignore alignment */ |
296 | #define XFS_FEAT_ALLOCSIZE (1ULL << 50) /* user specified allocation size */ |
297 | #define XFS_FEAT_LARGE_IOSIZE (1ULL << 51) /* report large preferred |
298 | * I/O size in stat() */ |
299 | #define XFS_FEAT_WSYNC (1ULL << 52) /* synchronous metadata ops */ |
300 | #define XFS_FEAT_DIRSYNC (1ULL << 53) /* synchronous directory ops */ |
301 | #define XFS_FEAT_DISCARD (1ULL << 54) /* discard unused blocks */ |
302 | #define XFS_FEAT_GRPID (1ULL << 55) /* group-ID assigned from directory */ |
303 | #define XFS_FEAT_SMALL_INUMS (1ULL << 56) /* user wants 32bit inodes */ |
304 | #define XFS_FEAT_IKEEP (1ULL << 57) /* keep empty inode clusters*/ |
305 | #define XFS_FEAT_SWALLOC (1ULL << 58) /* stripe width allocation */ |
306 | #define XFS_FEAT_FILESTREAMS (1ULL << 59) /* use filestreams allocator */ |
307 | #define XFS_FEAT_DAX_ALWAYS (1ULL << 60) /* DAX always enabled */ |
308 | #define XFS_FEAT_DAX_NEVER (1ULL << 61) /* DAX never enabled */ |
309 | #define XFS_FEAT_NORECOVERY (1ULL << 62) /* no recovery - dirty fs */ |
310 | #define XFS_FEAT_NOUUID (1ULL << 63) /* ignore uuid during mount */ |
311 | |
312 | #define __XFS_HAS_FEAT(name, NAME) \ |
313 | static inline bool xfs_has_ ## name (struct xfs_mount *mp) \ |
314 | { \ |
315 | return mp->m_features & XFS_FEAT_ ## NAME; \ |
316 | } |
317 | |
318 | /* Some features can be added dynamically so they need a set wrapper, too. */ |
319 | #define __XFS_ADD_FEAT(name, NAME) \ |
320 | __XFS_HAS_FEAT(name, NAME); \ |
321 | static inline void xfs_add_ ## name (struct xfs_mount *mp) \ |
322 | { \ |
323 | mp->m_features |= XFS_FEAT_ ## NAME; \ |
324 | xfs_sb_version_add ## name(&mp->m_sb); \ |
325 | } |
326 | |
327 | /* Superblock features */ |
328 | __XFS_ADD_FEAT(attr, ATTR) |
329 | __XFS_HAS_FEAT(nlink, NLINK) |
330 | __XFS_ADD_FEAT(quota, QUOTA) |
331 | __XFS_HAS_FEAT(align, ALIGN) |
332 | __XFS_HAS_FEAT(dalign, DALIGN) |
333 | __XFS_HAS_FEAT(logv2, LOGV2) |
334 | __XFS_HAS_FEAT(sector, SECTOR) |
335 | __XFS_HAS_FEAT(extflg, EXTFLG) |
336 | __XFS_HAS_FEAT(asciici, ASCIICI) |
337 | __XFS_HAS_FEAT(lazysbcount, LAZYSBCOUNT) |
338 | __XFS_ADD_FEAT(attr2, ATTR2) |
339 | __XFS_HAS_FEAT(parent, PARENT) |
340 | __XFS_ADD_FEAT(projid32, PROJID32) |
341 | __XFS_HAS_FEAT(crc, CRC) |
342 | __XFS_HAS_FEAT(v3inodes, V3INODES) |
343 | __XFS_HAS_FEAT(pquotino, PQUOTINO) |
344 | __XFS_HAS_FEAT(ftype, FTYPE) |
345 | __XFS_HAS_FEAT(finobt, FINOBT) |
346 | __XFS_HAS_FEAT(rmapbt, RMAPBT) |
347 | __XFS_HAS_FEAT(reflink, REFLINK) |
348 | __XFS_HAS_FEAT(sparseinodes, SPINODES) |
349 | __XFS_HAS_FEAT(metauuid, META_UUID) |
350 | __XFS_HAS_FEAT(realtime, REALTIME) |
351 | __XFS_HAS_FEAT(inobtcounts, INOBTCNT) |
352 | __XFS_HAS_FEAT(bigtime, BIGTIME) |
353 | __XFS_HAS_FEAT(needsrepair, NEEDSREPAIR) |
354 | __XFS_HAS_FEAT(large_extent_counts, NREXT64) |
355 | |
356 | /* |
357 | * Mount features |
358 | * |
359 | * These do not change dynamically - features that can come and go, such as 32 |
360 | * bit inodes and read-only state, are kept as operational state rather than |
361 | * features. |
362 | */ |
363 | __XFS_HAS_FEAT(noattr2, NOATTR2) |
364 | __XFS_HAS_FEAT(noalign, NOALIGN) |
365 | __XFS_HAS_FEAT(allocsize, ALLOCSIZE) |
366 | __XFS_HAS_FEAT(large_iosize, LARGE_IOSIZE) |
367 | __XFS_HAS_FEAT(wsync, WSYNC) |
368 | __XFS_HAS_FEAT(dirsync, DIRSYNC) |
369 | __XFS_HAS_FEAT(discard, DISCARD) |
370 | __XFS_HAS_FEAT(grpid, GRPID) |
371 | __XFS_HAS_FEAT(small_inums, SMALL_INUMS) |
372 | __XFS_HAS_FEAT(ikeep, IKEEP) |
373 | __XFS_HAS_FEAT(swalloc, SWALLOC) |
374 | __XFS_HAS_FEAT(filestreams, FILESTREAMS) |
375 | __XFS_HAS_FEAT(dax_always, DAX_ALWAYS) |
376 | __XFS_HAS_FEAT(dax_never, DAX_NEVER) |
377 | __XFS_HAS_FEAT(norecovery, NORECOVERY) |
378 | __XFS_HAS_FEAT(nouuid, NOUUID) |
379 | |
380 | /* |
381 | * Operational mount state flags |
382 | * |
383 | * Use these with atomic bit ops only! |
384 | */ |
385 | #define XFS_OPSTATE_UNMOUNTING 0 /* filesystem is unmounting */ |
386 | #define XFS_OPSTATE_CLEAN 1 /* mount was clean */ |
387 | #define XFS_OPSTATE_SHUTDOWN 2 /* stop all fs operations */ |
388 | #define XFS_OPSTATE_INODE32 3 /* inode32 allocator active */ |
389 | #define XFS_OPSTATE_READONLY 4 /* read-only fs */ |
390 | |
391 | /* |
392 | * If set, inactivation worker threads will be scheduled to process queued |
393 | * inodegc work. If not, queued inodes remain in memory waiting to be |
394 | * processed. |
395 | */ |
396 | #define XFS_OPSTATE_INODEGC_ENABLED 5 |
397 | /* |
398 | * If set, background speculative prealloc gc worker threads will be scheduled |
399 | * to process queued blockgc work. If not, inodes retain their preallocations |
400 | * until explicitly deleted. |
401 | */ |
402 | #define XFS_OPSTATE_BLOCKGC_ENABLED 6 |
403 | |
404 | /* Kernel has logged a warning about online fsck being used on this fs. */ |
405 | #define XFS_OPSTATE_WARNED_SCRUB 7 |
406 | /* Kernel has logged a warning about shrink being used on this fs. */ |
407 | #define XFS_OPSTATE_WARNED_SHRINK 8 |
408 | /* Kernel has logged a warning about logged xattr updates being used. */ |
409 | #define XFS_OPSTATE_WARNED_LARP 9 |
410 | /* Mount time quotacheck is running */ |
411 | #define XFS_OPSTATE_QUOTACHECK_RUNNING 10 |
412 | |
413 | #define __XFS_IS_OPSTATE(name, NAME) \ |
414 | static inline bool xfs_is_ ## name (struct xfs_mount *mp) \ |
415 | { \ |
416 | return test_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ |
417 | } \ |
418 | static inline bool xfs_clear_ ## name (struct xfs_mount *mp) \ |
419 | { \ |
420 | return test_and_clear_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ |
421 | } \ |
422 | static inline bool xfs_set_ ## name (struct xfs_mount *mp) \ |
423 | { \ |
424 | return test_and_set_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ |
425 | } |
426 | |
427 | __XFS_IS_OPSTATE(unmounting, UNMOUNTING) |
428 | __XFS_IS_OPSTATE(clean, CLEAN) |
429 | __XFS_IS_OPSTATE(shutdown, SHUTDOWN) |
430 | __XFS_IS_OPSTATE(inode32, INODE32) |
431 | __XFS_IS_OPSTATE(readonly, READONLY) |
432 | __XFS_IS_OPSTATE(inodegc_enabled, INODEGC_ENABLED) |
433 | __XFS_IS_OPSTATE(blockgc_enabled, BLOCKGC_ENABLED) |
434 | #ifdef CONFIG_XFS_QUOTA |
435 | __XFS_IS_OPSTATE(quotacheck_running, QUOTACHECK_RUNNING) |
436 | #else |
437 | # define xfs_is_quotacheck_running(mp) (false) |
438 | #endif |
439 | |
440 | static inline bool |
441 | xfs_should_warn(struct xfs_mount *mp, long nr) |
442 | { |
443 | return !test_and_set_bit(nr, addr: &mp->m_opstate); |
444 | } |
445 | |
446 | #define XFS_OPSTATE_STRINGS \ |
447 | { (1UL << XFS_OPSTATE_UNMOUNTING), "unmounting" }, \ |
448 | { (1UL << XFS_OPSTATE_CLEAN), "clean" }, \ |
449 | { (1UL << XFS_OPSTATE_SHUTDOWN), "shutdown" }, \ |
450 | { (1UL << XFS_OPSTATE_INODE32), "inode32" }, \ |
451 | { (1UL << XFS_OPSTATE_READONLY), "read_only" }, \ |
452 | { (1UL << XFS_OPSTATE_INODEGC_ENABLED), "inodegc" }, \ |
453 | { (1UL << XFS_OPSTATE_BLOCKGC_ENABLED), "blockgc" }, \ |
454 | { (1UL << XFS_OPSTATE_WARNED_SCRUB), "wscrub" }, \ |
455 | { (1UL << XFS_OPSTATE_WARNED_SHRINK), "wshrink" }, \ |
456 | { (1UL << XFS_OPSTATE_WARNED_LARP), "wlarp" }, \ |
457 | { (1UL << XFS_OPSTATE_QUOTACHECK_RUNNING), "quotacheck" } |
458 | |
459 | /* |
460 | * Max and min values for mount-option defined I/O |
461 | * preallocation sizes. |
462 | */ |
463 | #define XFS_MAX_IO_LOG 30 /* 1G */ |
464 | #define XFS_MIN_IO_LOG PAGE_SHIFT |
465 | |
466 | void xfs_do_force_shutdown(struct xfs_mount *mp, uint32_t flags, char *fname, |
467 | int lnnum); |
468 | #define xfs_force_shutdown(m,f) \ |
469 | xfs_do_force_shutdown(m, f, __FILE__, __LINE__) |
470 | |
471 | #define SHUTDOWN_META_IO_ERROR (1u << 0) /* write attempt to metadata failed */ |
472 | #define SHUTDOWN_LOG_IO_ERROR (1u << 1) /* write attempt to the log failed */ |
473 | #define SHUTDOWN_FORCE_UMOUNT (1u << 2) /* shutdown from a forced unmount */ |
474 | #define SHUTDOWN_CORRUPT_INCORE (1u << 3) /* corrupt in-memory structures */ |
475 | #define SHUTDOWN_CORRUPT_ONDISK (1u << 4) /* corrupt metadata on device */ |
476 | #define SHUTDOWN_DEVICE_REMOVED (1u << 5) /* device removed underneath us */ |
477 | |
478 | #define XFS_SHUTDOWN_STRINGS \ |
479 | { SHUTDOWN_META_IO_ERROR, "metadata_io" }, \ |
480 | { SHUTDOWN_LOG_IO_ERROR, "log_io" }, \ |
481 | { SHUTDOWN_FORCE_UMOUNT, "force_umount" }, \ |
482 | { SHUTDOWN_CORRUPT_INCORE, "corruption" }, \ |
483 | { SHUTDOWN_DEVICE_REMOVED, "device_removed" } |
484 | |
485 | /* |
486 | * Flags for xfs_mountfs |
487 | */ |
488 | #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ |
489 | |
490 | static inline xfs_agnumber_t |
491 | xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) |
492 | { |
493 | xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); |
494 | do_div(ld, mp->m_sb.sb_agblocks); |
495 | return (xfs_agnumber_t) ld; |
496 | } |
497 | |
498 | static inline xfs_agblock_t |
499 | xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) |
500 | { |
501 | xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); |
502 | return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); |
503 | } |
504 | |
505 | int xfs_buf_hash_init(struct xfs_perag *pag); |
506 | void xfs_buf_hash_destroy(struct xfs_perag *pag); |
507 | |
508 | extern void xfs_uuid_table_free(void); |
509 | extern uint64_t xfs_default_resblks(xfs_mount_t *mp); |
510 | extern int xfs_mountfs(xfs_mount_t *mp); |
511 | extern void xfs_unmountfs(xfs_mount_t *); |
512 | |
513 | /* |
514 | * Deltas for the block count can vary from 1 to very large, but lock contention |
515 | * only occurs on frequent small block count updates such as in the delayed |
516 | * allocation path for buffered writes (page a time updates). Hence we set |
517 | * a large batch count (1024) to minimise global counter updates except when |
518 | * we get near to ENOSPC and we have to be very accurate with our updates. |
519 | */ |
520 | #define XFS_FDBLOCKS_BATCH 1024 |
521 | |
522 | /* |
523 | * Estimate the amount of free space that is not available to userspace and is |
524 | * not explicitly reserved from the incore fdblocks. This includes: |
525 | * |
526 | * - The minimum number of blocks needed to support splitting a bmap btree |
527 | * - The blocks currently in use by the freespace btrees because they record |
528 | * the actual blocks that will fill per-AG metadata space reservations |
529 | */ |
530 | static inline uint64_t |
531 | xfs_fdblocks_unavailable( |
532 | struct xfs_mount *mp) |
533 | { |
534 | return mp->m_alloc_set_aside + atomic64_read(v: &mp->m_allocbt_blks); |
535 | } |
536 | |
537 | int xfs_mod_freecounter(struct xfs_mount *mp, struct percpu_counter *counter, |
538 | int64_t delta, bool rsvd); |
539 | |
540 | static inline int |
541 | xfs_mod_fdblocks(struct xfs_mount *mp, int64_t delta, bool reserved) |
542 | { |
543 | return xfs_mod_freecounter(mp, counter: &mp->m_fdblocks, delta, rsvd: reserved); |
544 | } |
545 | |
546 | static inline int |
547 | xfs_mod_frextents(struct xfs_mount *mp, int64_t delta) |
548 | { |
549 | return xfs_mod_freecounter(mp, counter: &mp->m_frextents, delta, rsvd: false); |
550 | } |
551 | |
552 | extern int xfs_readsb(xfs_mount_t *, int); |
553 | extern void xfs_freesb(xfs_mount_t *); |
554 | extern bool xfs_fs_writable(struct xfs_mount *mp, int level); |
555 | extern int xfs_sb_validate_fsb_count(struct xfs_sb *, uint64_t); |
556 | |
557 | extern int xfs_dev_is_read_only(struct xfs_mount *, char *); |
558 | |
559 | extern void xfs_set_low_space_thresholds(struct xfs_mount *); |
560 | |
561 | int xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb, |
562 | xfs_off_t count_fsb); |
563 | |
564 | struct xfs_error_cfg * xfs_error_get_cfg(struct xfs_mount *mp, |
565 | int error_class, int error); |
566 | void xfs_force_summary_recalc(struct xfs_mount *mp); |
567 | int xfs_add_incompat_log_feature(struct xfs_mount *mp, uint32_t feature); |
568 | bool xfs_clear_incompat_log_features(struct xfs_mount *mp); |
569 | void xfs_mod_delalloc(struct xfs_mount *mp, int64_t delta); |
570 | |
571 | #endif /* __XFS_MOUNT_H__ */ |
572 | |