Line data Source code
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 : struct xfs_rtgroup;
17 :
18 : /* dynamic preallocation free space thresholds, 5% down to 1% */
19 : enum {
20 : XFS_LOWSP_1_PCNT = 0,
21 : XFS_LOWSP_2_PCNT,
22 : XFS_LOWSP_3_PCNT,
23 : XFS_LOWSP_4_PCNT,
24 : XFS_LOWSP_5_PCNT,
25 : XFS_LOWSP_MAX,
26 : };
27 :
28 : /*
29 : * Error Configuration
30 : *
31 : * Error classes define the subsystem the configuration belongs to.
32 : * Error numbers define the errors that are configurable.
33 : */
34 : enum {
35 : XFS_ERR_METADATA,
36 : XFS_ERR_CLASS_MAX,
37 : };
38 : enum {
39 : XFS_ERR_DEFAULT,
40 : XFS_ERR_EIO,
41 : XFS_ERR_ENOSPC,
42 : XFS_ERR_ENODEV,
43 : XFS_ERR_ERRNO_MAX,
44 : };
45 :
46 : #define XFS_ERR_RETRY_FOREVER -1
47 :
48 : /*
49 : * Although retry_timeout is in jiffies which is normally an unsigned long,
50 : * we limit the retry timeout to 86400 seconds, or one day. So even a
51 : * signed 32-bit long is sufficient for a HZ value up to 24855. Making it
52 : * signed lets us store the special "-1" value, meaning retry forever.
53 : */
54 : struct xfs_error_cfg {
55 : struct xfs_kobj kobj;
56 : int max_retries;
57 : long retry_timeout; /* in jiffies, -1 = infinite */
58 : };
59 :
60 : /*
61 : * Per-cpu deferred inode inactivation GC lists.
62 : */
63 : struct xfs_inodegc {
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 : #if defined(DEBUG) || defined(XFS_WARN)
72 : unsigned int cpu;
73 : #endif
74 : };
75 :
76 : /*
77 : * The struct xfsmount layout is optimised to separate read-mostly variables
78 : * from variables that are frequently modified. We put the read-mostly variables
79 : * first, then place all the other variables at the end.
80 : *
81 : * Typically, read-mostly variables are those that are set at mount time and
82 : * never changed again, or only change rarely as a result of things like sysfs
83 : * knobs being tweaked.
84 : */
85 : typedef struct xfs_mount {
86 : struct xfs_sb m_sb; /* copy of fs superblock */
87 : struct super_block *m_super;
88 : struct xfs_ail *m_ail; /* fs active log item list */
89 : struct xfs_buf *m_sb_bp; /* buffer for superblock */
90 : struct xfs_buf *m_rtsb_bp; /* realtime superblock */
91 : char *m_rtname; /* realtime device name */
92 : char *m_logname; /* external log device name */
93 : struct xfs_da_geometry *m_dir_geo; /* directory block geometry */
94 : struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */
95 : struct xlog *m_log; /* log specific stuff */
96 : struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
97 : struct xfs_inode *m_rsumip; /* pointer to summary inode */
98 : struct xfs_inode *m_rootip; /* pointer to root directory */
99 : struct xfs_inode *m_metadirip; /* ptr to metadata directory */
100 : struct xfs_quotainfo *m_quotainfo; /* disk quota information */
101 : xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
102 : xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
103 : xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
104 : struct list_head m_mount_list; /* global mount list */
105 : void __percpu *m_inodegc; /* percpu inodegc structures */
106 :
107 : /*
108 : * Optional cache of rt summary level per bitmap block with the
109 : * invariant that m_rsum_cache[bbno] <= the minimum i for which
110 : * rsum[i][bbno] != 0. Reads and writes are serialized by the rsumip
111 : * inode lock.
112 : */
113 : uint8_t *m_rsum_cache;
114 : struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
115 : struct workqueue_struct *m_buf_workqueue;
116 : struct workqueue_struct *m_unwritten_workqueue;
117 : struct workqueue_struct *m_reclaim_workqueue;
118 : struct workqueue_struct *m_sync_workqueue;
119 : struct workqueue_struct *m_blockgc_wq;
120 : struct workqueue_struct *m_inodegc_wq;
121 :
122 : int m_bsize; /* fs logical block size */
123 : uint8_t m_blkbit_log; /* blocklog + NBBY */
124 : uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
125 : uint8_t m_agno_log; /* log #ag's */
126 : uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
127 : int8_t m_rtxblklog; /* log2 of rextsize, if possible */
128 : int8_t m_rgblklog; /* log2 of rt group sz if possible */
129 : uint m_blockmask; /* sb_blocksize-1 */
130 : uint m_blockwsize; /* sb_blocksize in words */
131 : /* number of rt extents per rt bitmap block if rtgroups enabled */
132 : unsigned int m_rtx_per_rbmblock;
133 : uint m_alloc_mxr[2]; /* max alloc btree records */
134 : uint m_alloc_mnr[2]; /* min alloc btree records */
135 : uint m_bmap_dmxr[2]; /* max bmap btree records */
136 : uint m_bmap_dmnr[2]; /* min bmap btree records */
137 : uint m_rmap_mxr[2]; /* max rmap btree records */
138 : uint m_rmap_mnr[2]; /* min rmap btree records */
139 : uint m_rtrmap_mxr[2]; /* max rtrmap btree records */
140 : uint m_rtrmap_mnr[2]; /* min rtrmap btree records */
141 : uint m_refc_mxr[2]; /* max refc btree records */
142 : uint m_refc_mnr[2]; /* min refc btree records */
143 : uint m_rtrefc_mxr[2]; /* max rtrefc btree records */
144 : uint m_rtrefc_mnr[2]; /* min rtrefc btree records */
145 : uint m_alloc_maxlevels; /* max alloc btree levels */
146 : uint m_bm_maxlevels[2]; /* max bmap btree levels */
147 : uint m_rmap_maxlevels; /* max rmap btree levels */
148 : uint m_rtrmap_maxlevels; /* max rtrmap btree level */
149 : uint m_refc_maxlevels; /* max refcount btree level */
150 : uint m_rtrefc_maxlevels; /* max rtrefc btree level */
151 : unsigned int m_agbtree_maxlevels; /* max level of all AG btrees */
152 : unsigned int m_rtbtree_maxlevels; /* max level of all rt btrees */
153 : xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */
154 : uint m_alloc_set_aside; /* space we can't use */
155 : uint m_ag_max_usable; /* max space per AG */
156 : int m_dalign; /* stripe unit */
157 : int m_swidth; /* stripe width */
158 : xfs_agnumber_t m_maxagi; /* highest inode alloc group */
159 : uint m_allocsize_log;/* min write size log bytes */
160 : uint m_allocsize_blocks; /* min write size blocks */
161 : int m_logbufs; /* number of log buffers */
162 : int m_logbsize; /* size of each log buffer */
163 : uint m_rsumlevels; /* rt summary levels */
164 : uint m_rsumsize; /* size of rt summary, bytes */
165 : int m_fixedfsid[2]; /* unchanged for life of FS */
166 : uint m_qflags; /* quota status flags */
167 : uint64_t m_features; /* active filesystem features */
168 : uint64_t m_low_space[XFS_LOWSP_MAX];
169 : uint64_t m_low_rtexts[XFS_LOWSP_MAX];
170 : uint64_t m_rtxblkmask; /* rt extent block mask */
171 : uint64_t m_rgblkmask; /* rt group block mask */
172 : struct xfs_ino_geometry m_ino_geo; /* inode geometry */
173 : struct xfs_trans_resv m_resv; /* precomputed res values */
174 : /* low free space thresholds */
175 : unsigned long m_opstate; /* dynamic state flags */
176 : bool m_always_cow;
177 : bool m_fail_unmount;
178 : bool m_finobt_nores; /* no per-AG finobt resv. */
179 : bool m_update_sb; /* sb needs update in mount */
180 :
181 : /*
182 : * Bitsets of per-fs metadata that have been checked and/or are sick.
183 : * Callers must hold m_sb_lock to access these two fields.
184 : */
185 : uint8_t m_fs_checked;
186 : uint8_t m_fs_sick;
187 : /*
188 : * Bitsets of rt metadata that have been checked and/or are sick.
189 : * Callers must hold m_sb_lock to access this field.
190 : */
191 : uint8_t m_rt_checked;
192 : uint8_t m_rt_sick;
193 :
194 : /*
195 : * End of read-mostly variables. Frequently written variables and locks
196 : * should be placed below this comment from now on. The first variable
197 : * here is marked as cacheline aligned so they it is separated from
198 : * the read-mostly variables.
199 : */
200 :
201 : spinlock_t ____cacheline_aligned m_sb_lock; /* sb counter lock */
202 : struct percpu_counter m_icount; /* allocated inodes counter */
203 : struct percpu_counter m_ifree; /* free inodes counter */
204 : struct percpu_counter m_fdblocks; /* free block counter */
205 : struct percpu_counter m_frextents; /* free rt extent counter */
206 :
207 : /*
208 : * Count of data device blocks reserved for delayed allocations,
209 : * including indlen blocks. Does not include allocated CoW staging
210 : * extents or anything related to the rt device.
211 : */
212 : struct percpu_counter m_delalloc_blks;
213 : /*
214 : * Global count of allocation btree blocks in use across all AGs. Only
215 : * used when perag reservation is enabled. Helps prevent block
216 : * reservation from attempting to reserve allocation btree blocks.
217 : */
218 : atomic64_t m_allocbt_blks;
219 :
220 : struct radix_tree_root m_rtgroup_tree; /* per-rt group info */
221 : spinlock_t m_rtgroup_lock; /* lock for m_rtgroup_tree */
222 : struct radix_tree_root m_perag_tree; /* per-ag accounting info */
223 : spinlock_t m_perag_lock; /* lock for m_perag_tree */
224 : uint64_t m_resblks; /* total reserved blocks */
225 : uint64_t m_resblks_avail;/* available reserved blocks */
226 : uint64_t m_resblks_save; /* reserved blks @ remount,ro */
227 : struct delayed_work m_reclaim_work; /* background inode reclaim */
228 : struct dentry *m_debugfs; /* debugfs parent */
229 : struct xfs_kobj m_kobj;
230 : struct xfs_kobj m_error_kobj;
231 : struct xfs_kobj m_error_meta_kobj;
232 : struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX];
233 : struct xstats m_stats; /* per-fs stats */
234 : #ifdef CONFIG_XFS_ONLINE_SCRUB_STATS
235 : struct xchk_stats *m_scrub_stats;
236 : #endif
237 : xfs_agnumber_t m_agfrotor; /* last ag where space found */
238 : atomic_t m_agirotor; /* last ag dir inode alloced */
239 :
240 : /* Memory shrinker to throttle and reprioritize inodegc */
241 : struct shrinker m_inodegc_shrinker;
242 : /*
243 : * Workqueue item so that we can coalesce multiple inode flush attempts
244 : * into a single flush.
245 : */
246 : struct work_struct m_flush_inodes_work;
247 :
248 : /*
249 : * Generation of the filesysyem layout. This is incremented by each
250 : * growfs, and used by the pNFS server to ensure the client updates
251 : * its view of the block device once it gets a layout that might
252 : * reference the newly added blocks. Does not need to be persistent
253 : * as long as we only allow file system size increments, but if we
254 : * ever support shrinks it would have to be persisted in addition
255 : * to various other kinds of pain inflicted on the pNFS server.
256 : */
257 : uint32_t m_generation;
258 : struct mutex m_growlock; /* growfs mutex */
259 :
260 : #ifdef DEBUG
261 : /*
262 : * Frequency with which errors are injected. Replaces xfs_etest; the
263 : * value stored in here is the inverse of the frequency with which the
264 : * error triggers. 1 = always, 2 = half the time, etc.
265 : */
266 : unsigned int *m_errortag;
267 : struct xfs_kobj m_errortag_kobj;
268 : #endif
269 : /* Hook to feed dirent updates to an active online repair. */
270 : struct xfs_hooks m_dir_update_hooks;
271 : } xfs_mount_t;
272 :
273 : #define M_IGEO(mp) (&(mp)->m_ino_geo)
274 :
275 : /*
276 : * Flags for m_features.
277 : *
278 : * These are all the active features in the filesystem, regardless of how
279 : * they are configured.
280 : */
281 : #define XFS_FEAT_ATTR (1ULL << 0) /* xattrs present in fs */
282 : #define XFS_FEAT_NLINK (1ULL << 1) /* 32 bit link counts */
283 : #define XFS_FEAT_QUOTA (1ULL << 2) /* quota active */
284 : #define XFS_FEAT_ALIGN (1ULL << 3) /* inode alignment */
285 : #define XFS_FEAT_DALIGN (1ULL << 4) /* data alignment */
286 : #define XFS_FEAT_LOGV2 (1ULL << 5) /* version 2 logs */
287 : #define XFS_FEAT_SECTOR (1ULL << 6) /* sector size > 512 bytes */
288 : #define XFS_FEAT_EXTFLG (1ULL << 7) /* unwritten extents */
289 : #define XFS_FEAT_ASCIICI (1ULL << 8) /* ASCII only case-insens. */
290 : #define XFS_FEAT_LAZYSBCOUNT (1ULL << 9) /* Superblk counters */
291 : #define XFS_FEAT_ATTR2 (1ULL << 10) /* dynamic attr fork */
292 : #define XFS_FEAT_PARENT (1ULL << 11) /* parent pointers */
293 : #define XFS_FEAT_PROJID32 (1ULL << 12) /* 32 bit project id */
294 : #define XFS_FEAT_CRC (1ULL << 13) /* metadata CRCs */
295 : #define XFS_FEAT_V3INODES (1ULL << 14) /* Version 3 inodes */
296 : #define XFS_FEAT_PQUOTINO (1ULL << 15) /* non-shared proj/grp quotas */
297 : #define XFS_FEAT_FTYPE (1ULL << 16) /* inode type in dir */
298 : #define XFS_FEAT_FINOBT (1ULL << 17) /* free inode btree */
299 : #define XFS_FEAT_RMAPBT (1ULL << 18) /* reverse map btree */
300 : #define XFS_FEAT_REFLINK (1ULL << 19) /* reflinked files */
301 : #define XFS_FEAT_SPINODES (1ULL << 20) /* sparse inode chunks */
302 : #define XFS_FEAT_META_UUID (1ULL << 21) /* metadata UUID */
303 : #define XFS_FEAT_REALTIME (1ULL << 22) /* realtime device present */
304 : #define XFS_FEAT_INOBTCNT (1ULL << 23) /* inobt block counts */
305 : #define XFS_FEAT_BIGTIME (1ULL << 24) /* large timestamps */
306 : #define XFS_FEAT_NEEDSREPAIR (1ULL << 25) /* needs xfs_repair */
307 : #define XFS_FEAT_NREXT64 (1ULL << 26) /* large extent counters */
308 : #define XFS_FEAT_METADIR (1ULL << 27) /* metadata directory tree */
309 : #define XFS_FEAT_RTGROUPS (1ULL << 28) /* realtime groups */
310 :
311 : /* Mount features */
312 : #define XFS_FEAT_NOATTR2 (1ULL << 48) /* disable attr2 creation */
313 : #define XFS_FEAT_NOALIGN (1ULL << 49) /* ignore alignment */
314 : #define XFS_FEAT_ALLOCSIZE (1ULL << 50) /* user specified allocation size */
315 : #define XFS_FEAT_LARGE_IOSIZE (1ULL << 51) /* report large preferred
316 : * I/O size in stat() */
317 : #define XFS_FEAT_WSYNC (1ULL << 52) /* synchronous metadata ops */
318 : #define XFS_FEAT_DIRSYNC (1ULL << 53) /* synchronous directory ops */
319 : #define XFS_FEAT_DISCARD (1ULL << 54) /* discard unused blocks */
320 : #define XFS_FEAT_GRPID (1ULL << 55) /* group-ID assigned from directory */
321 : #define XFS_FEAT_SMALL_INUMS (1ULL << 56) /* user wants 32bit inodes */
322 : #define XFS_FEAT_IKEEP (1ULL << 57) /* keep empty inode clusters*/
323 : #define XFS_FEAT_SWALLOC (1ULL << 58) /* stripe width allocation */
324 : #define XFS_FEAT_FILESTREAMS (1ULL << 59) /* use filestreams allocator */
325 : #define XFS_FEAT_DAX_ALWAYS (1ULL << 60) /* DAX always enabled */
326 : #define XFS_FEAT_DAX_NEVER (1ULL << 61) /* DAX never enabled */
327 : #define XFS_FEAT_NORECOVERY (1ULL << 62) /* no recovery - dirty fs */
328 : #define XFS_FEAT_NOUUID (1ULL << 63) /* ignore uuid during mount */
329 :
330 : #define __XFS_HAS_FEAT(name, NAME) \
331 : static inline bool xfs_has_ ## name (struct xfs_mount *mp) \
332 : { \
333 : return mp->m_features & XFS_FEAT_ ## NAME; \
334 : }
335 :
336 : /* Some features can be added dynamically so they need a set wrapper, too. */
337 : #define __XFS_ADD_FEAT(name, NAME) \
338 : __XFS_HAS_FEAT(name, NAME); \
339 : static inline void xfs_add_ ## name (struct xfs_mount *mp) \
340 : { \
341 : mp->m_features |= XFS_FEAT_ ## NAME; \
342 : xfs_sb_version_add ## name(&mp->m_sb); \
343 : }
344 :
345 : /* Superblock features */
346 253960794 : __XFS_ADD_FEAT(attr, ATTR)
347 : __XFS_HAS_FEAT(nlink, NLINK)
348 7353728 : __XFS_ADD_FEAT(quota, QUOTA)
349 7291846 : __XFS_HAS_FEAT(align, ALIGN)
350 7291900 : __XFS_HAS_FEAT(dalign, DALIGN)
351 10183640458 : __XFS_HAS_FEAT(logv2, LOGV2)
352 7316166 : __XFS_HAS_FEAT(sector, SECTOR)
353 : __XFS_HAS_FEAT(extflg, EXTFLG)
354 7956498985 : __XFS_HAS_FEAT(asciici, ASCIICI)
355 6077144285 : __XFS_HAS_FEAT(lazysbcount, LAZYSBCOUNT)
356 291113650 : __XFS_ADD_FEAT(attr2, ATTR2)
357 8064151008 : __XFS_HAS_FEAT(parent, PARENT)
358 144076890 : __XFS_ADD_FEAT(projid32, PROJID32)
359 >12592*10^8 : __XFS_HAS_FEAT(crc, CRC)
360 >10421*10^7 : __XFS_HAS_FEAT(v3inodes, V3INODES)
361 15614069 : __XFS_HAS_FEAT(pquotino, PQUOTINO)
362 >45828*10^7 : __XFS_HAS_FEAT(ftype, FTYPE)
363 1136213960 : __XFS_HAS_FEAT(finobt, FINOBT)
364 4214775061 : __XFS_HAS_FEAT(rmapbt, RMAPBT)
365 2860645066 : __XFS_HAS_FEAT(reflink, REFLINK)
366 31082780299 : __XFS_HAS_FEAT(sparseinodes, SPINODES)
367 900005 : __XFS_HAS_FEAT(metauuid, META_UUID)
368 >12621*10^7 : __XFS_HAS_FEAT(realtime, REALTIME)
369 10203230 : __XFS_HAS_FEAT(inobtcounts, INOBTCNT)
370 6869186063 : __XFS_HAS_FEAT(bigtime, BIGTIME)
371 67049 : __XFS_HAS_FEAT(needsrepair, NEEDSREPAIR)
372 531247561 : __XFS_HAS_FEAT(large_extent_counts, NREXT64)
373 >31017*10^7 : __XFS_HAS_FEAT(metadir, METADIR)
374 >86133*10^7 : __XFS_HAS_FEAT(rtgroups, RTGROUPS)
375 :
376 416329434 : static inline bool xfs_has_rtrmapbt(struct xfs_mount *mp)
377 : {
378 416329434 : return xfs_has_rtgroups(mp) && xfs_has_realtime(mp) &&
379 : xfs_has_rmapbt(mp);
380 : }
381 :
382 >12583*10^7 : static inline bool xfs_has_rtreflink(struct xfs_mount *mp)
383 : {
384 >12583*10^7 : return xfs_has_metadir(mp) && xfs_has_realtime(mp) &&
385 : xfs_has_reflink(mp);
386 : }
387 :
388 : /*
389 : * Mount features
390 : *
391 : * These do not change dynamically - features that can come and go, such as 32
392 : * bit inodes and read-only state, are kept as operational state rather than
393 : * features.
394 : */
395 398462683 : __XFS_HAS_FEAT(noattr2, NOATTR2)
396 135520 : __XFS_HAS_FEAT(noalign, NOALIGN)
397 34805351 : __XFS_HAS_FEAT(allocsize, ALLOCSIZE)
398 2246409603 : __XFS_HAS_FEAT(large_iosize, LARGE_IOSIZE)
399 1342127231 : __XFS_HAS_FEAT(wsync, WSYNC)
400 235863874 : __XFS_HAS_FEAT(dirsync, DIRSYNC)
401 6914666 : __XFS_HAS_FEAT(discard, DISCARD)
402 350657967 : __XFS_HAS_FEAT(grpid, GRPID)
403 16390823 : __XFS_HAS_FEAT(small_inums, SMALL_INUMS)
404 199934639 : __XFS_HAS_FEAT(ikeep, IKEEP)
405 6145938 : __XFS_HAS_FEAT(swalloc, SWALLOC)
406 47955992 : __XFS_HAS_FEAT(filestreams, FILESTREAMS)
407 1221263 : __XFS_HAS_FEAT(dax_always, DAX_ALWAYS)
408 880034948 : __XFS_HAS_FEAT(dax_never, DAX_NEVER)
409 1558684908 : __XFS_HAS_FEAT(norecovery, NORECOVERY)
410 133939 : __XFS_HAS_FEAT(nouuid, NOUUID)
411 :
412 : /*
413 : * Operational mount state flags
414 : *
415 : * Use these with atomic bit ops only!
416 : */
417 : #define XFS_OPSTATE_UNMOUNTING 0 /* filesystem is unmounting */
418 : #define XFS_OPSTATE_CLEAN 1 /* mount was clean */
419 : #define XFS_OPSTATE_SHUTDOWN 2 /* stop all fs operations */
420 : #define XFS_OPSTATE_INODE32 3 /* inode32 allocator active */
421 : #define XFS_OPSTATE_READONLY 4 /* read-only fs */
422 :
423 : /*
424 : * If set, inactivation worker threads will be scheduled to process queued
425 : * inodegc work. If not, queued inodes remain in memory waiting to be
426 : * processed.
427 : */
428 : #define XFS_OPSTATE_INODEGC_ENABLED 5
429 : /*
430 : * If set, background speculative prealloc gc worker threads will be scheduled
431 : * to process queued blockgc work. If not, inodes retain their preallocations
432 : * until explicitly deleted.
433 : */
434 : #define XFS_OPSTATE_BLOCKGC_ENABLED 6
435 :
436 : /* Kernel has logged a warning about online fsck being used on this fs. */
437 : #define XFS_OPSTATE_WARNED_SCRUB 7
438 : /* Kernel has logged a warning about shrink being used on this fs. */
439 : #define XFS_OPSTATE_WARNED_SHRINK 8
440 : /* Kernel has logged a warning about logged xattr updates being used. */
441 : #define XFS_OPSTATE_WARNED_LARP 9
442 : /* Kernel has logged a warning about extent swapping being used on this fs. */
443 : #define XFS_OPSTATE_WARNED_SWAPEXT 10
444 :
445 : #define __XFS_IS_OPSTATE(name, NAME) \
446 : static inline bool xfs_is_ ## name (struct xfs_mount *mp) \
447 : { \
448 : return test_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \
449 : } \
450 : static inline bool xfs_clear_ ## name (struct xfs_mount *mp) \
451 : { \
452 : return test_and_clear_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \
453 : } \
454 : static inline bool xfs_set_ ## name (struct xfs_mount *mp) \
455 : { \
456 : return test_and_set_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \
457 : }
458 :
459 118467 : __XFS_IS_OPSTATE(unmounting, UNMOUNTING)
460 156394 : __XFS_IS_OPSTATE(clean, CLEAN)
461 80385834608 : __XFS_IS_OPSTATE(shutdown, SHUTDOWN)
462 3929345 : __XFS_IS_OPSTATE(inode32, INODE32)
463 1761720254 : __XFS_IS_OPSTATE(readonly, READONLY)
464 122954842 : __XFS_IS_OPSTATE(inodegc_enabled, INODEGC_ENABLED)
465 6097447 : __XFS_IS_OPSTATE(blockgc_enabled, BLOCKGC_ENABLED)
466 :
467 : static inline bool
468 : xfs_should_warn(struct xfs_mount *mp, long nr)
469 : {
470 858918371 : return !test_and_set_bit(nr, &mp->m_opstate);
471 : }
472 :
473 : #define XFS_OPSTATE_STRINGS \
474 : { (1UL << XFS_OPSTATE_UNMOUNTING), "unmounting" }, \
475 : { (1UL << XFS_OPSTATE_CLEAN), "clean" }, \
476 : { (1UL << XFS_OPSTATE_SHUTDOWN), "shutdown" }, \
477 : { (1UL << XFS_OPSTATE_INODE32), "inode32" }, \
478 : { (1UL << XFS_OPSTATE_READONLY), "read_only" }, \
479 : { (1UL << XFS_OPSTATE_INODEGC_ENABLED), "inodegc" }, \
480 : { (1UL << XFS_OPSTATE_BLOCKGC_ENABLED), "blockgc" }, \
481 : { (1UL << XFS_OPSTATE_WARNED_SCRUB), "wscrub" }, \
482 : { (1UL << XFS_OPSTATE_WARNED_SHRINK), "wshrink" }, \
483 : { (1UL << XFS_OPSTATE_WARNED_LARP), "wlarp" }, \
484 : { (1UL << XFS_OPSTATE_WARNED_SWAPEXT), "wswapext" }
485 :
486 : /*
487 : * Max and min values for mount-option defined I/O
488 : * preallocation sizes.
489 : */
490 : #define XFS_MAX_IO_LOG 30 /* 1G */
491 : #define XFS_MIN_IO_LOG PAGE_SHIFT
492 :
493 : void xfs_do_force_shutdown(struct xfs_mount *mp, uint32_t flags, char *fname,
494 : int lnnum);
495 : #define xfs_force_shutdown(m,f) \
496 : xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
497 :
498 : #define SHUTDOWN_META_IO_ERROR (1u << 0) /* write attempt to metadata failed */
499 : #define SHUTDOWN_LOG_IO_ERROR (1u << 1) /* write attempt to the log failed */
500 : #define SHUTDOWN_FORCE_UMOUNT (1u << 2) /* shutdown from a forced unmount */
501 : #define SHUTDOWN_CORRUPT_INCORE (1u << 3) /* corrupt in-memory structures */
502 : #define SHUTDOWN_CORRUPT_ONDISK (1u << 4) /* corrupt metadata on device */
503 : #define SHUTDOWN_DEVICE_REMOVED (1u << 5) /* device removed underneath us */
504 :
505 : #define XFS_SHUTDOWN_STRINGS \
506 : { SHUTDOWN_META_IO_ERROR, "metadata_io" }, \
507 : { SHUTDOWN_LOG_IO_ERROR, "log_io" }, \
508 : { SHUTDOWN_FORCE_UMOUNT, "force_umount" }, \
509 : { SHUTDOWN_CORRUPT_INCORE, "corruption" }, \
510 : { SHUTDOWN_DEVICE_REMOVED, "device_removed" }
511 :
512 : /*
513 : * Flags for xfs_mountfs
514 : */
515 : #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
516 :
517 : static inline xfs_agnumber_t
518 >28756*10^7 : xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
519 : {
520 >28756*10^7 : xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d);
521 >28756*10^7 : do_div(ld, mp->m_sb.sb_agblocks);
522 >28756*10^7 : return (xfs_agnumber_t) ld;
523 : }
524 :
525 : static inline xfs_agblock_t
526 >52084*10^7 : xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
527 : {
528 >52084*10^7 : xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d);
529 >52084*10^7 : return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
530 : }
531 :
532 : extern void xfs_uuid_table_free(void);
533 : extern uint64_t xfs_default_resblks(xfs_mount_t *mp);
534 : extern int xfs_mountfs(xfs_mount_t *mp);
535 : extern void xfs_unmountfs(xfs_mount_t *);
536 :
537 : /*
538 : * Deltas for the block count can vary from 1 to very large, but lock contention
539 : * only occurs on frequent small block count updates such as in the delayed
540 : * allocation path for buffered writes (page a time updates). Hence we set
541 : * a large batch count (1024) to minimise global counter updates except when
542 : * we get near to ENOSPC and we have to be very accurate with our updates.
543 : */
544 : #define XFS_FDBLOCKS_BATCH 1024
545 :
546 : /*
547 : * Estimate the amount of free space that is not available to userspace and is
548 : * not explicitly reserved from the incore fdblocks. This includes:
549 : *
550 : * - The minimum number of blocks needed to support splitting a bmap btree
551 : * - The blocks currently in use by the freespace btrees because they record
552 : * the actual blocks that will fill per-AG metadata space reservations
553 : */
554 : static inline uint64_t
555 : xfs_fdblocks_unavailable(
556 : struct xfs_mount *mp)
557 : {
558 1618415096 : return mp->m_alloc_set_aside + atomic64_read(&mp->m_allocbt_blks);
559 : }
560 :
561 : int xfs_mod_freecounter(struct xfs_mount *mp, struct percpu_counter *counter,
562 : int64_t delta, bool rsvd);
563 :
564 : static inline int
565 : xfs_mod_fdblocks(struct xfs_mount *mp, int64_t delta, bool reserved)
566 : {
567 3170841532 : return xfs_mod_freecounter(mp, &mp->m_fdblocks, delta, reserved);
568 : }
569 :
570 : static inline int
571 : xfs_mod_frextents(struct xfs_mount *mp, int64_t delta)
572 : {
573 564575220 : return xfs_mod_freecounter(mp, &mp->m_frextents, delta, false);
574 : }
575 :
576 : extern int xfs_readsb(xfs_mount_t *, int);
577 : extern void xfs_freesb(xfs_mount_t *);
578 : extern bool xfs_fs_writable(struct xfs_mount *mp, int level);
579 : extern int xfs_sb_validate_fsb_count(struct xfs_sb *, uint64_t);
580 :
581 : extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
582 :
583 : extern void xfs_set_low_space_thresholds(struct xfs_mount *);
584 :
585 : int xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb,
586 : xfs_off_t count_fsb);
587 :
588 : struct xfs_error_cfg * xfs_error_get_cfg(struct xfs_mount *mp,
589 : int error_class, int error);
590 : void xfs_force_summary_recalc(struct xfs_mount *mp);
591 : int xfs_add_incompat_log_feature(struct xfs_mount *mp, uint32_t feature);
592 : bool xfs_clear_incompat_log_features(struct xfs_mount *mp, uint32_t feature);
593 : void xfs_mod_delalloc(struct xfs_mount *mp, int64_t delta);
594 :
595 : #endif /* __XFS_MOUNT_H__ */
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