Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
de57606c SW |
2 | #ifndef _FS_CEPH_SUPER_H |
3 | #define _FS_CEPH_SUPER_H | |
4 | ||
3d14c5d2 | 5 | #include <linux/ceph/ceph_debug.h> |
de57606c SW |
6 | |
7 | #include <asm/unaligned.h> | |
8 | #include <linux/backing-dev.h> | |
9 | #include <linux/completion.h> | |
10 | #include <linux/exportfs.h> | |
11 | #include <linux/fs.h> | |
12 | #include <linux/mempool.h> | |
13 | #include <linux/pagemap.h> | |
14 | #include <linux/wait.h> | |
f1a3d572 | 15 | #include <linux/writeback.h> |
5a0e3ad6 | 16 | #include <linux/slab.h> |
c969d9bf | 17 | #include <linux/posix_acl.h> |
805692d0 | 18 | #include <linux/refcount.h> |
668959a5 | 19 | #include <linux/security.h> |
de57606c | 20 | |
3d14c5d2 | 21 | #include <linux/ceph/libceph.h> |
de57606c | 22 | |
99ccbd22 MT |
23 | #ifdef CONFIG_CEPH_FSCACHE |
24 | #include <linux/fscache.h> | |
25 | #endif | |
26 | ||
de57606c SW |
27 | /* large granularity for statfs utilization stats to facilitate |
28 | * large volume sizes on 32-bit machines. */ | |
92a49fb0 | 29 | #define CEPH_BLOCK_SHIFT 22 /* 4 MB */ |
de57606c | 30 | #define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) |
8e55ba8c | 31 | #define CEPH_4K_BLOCK_SHIFT 12 /* 4 KB */ |
de57606c | 32 | |
0b98acd6 | 33 | #define CEPH_MOUNT_OPT_CLEANRECOVER (1<<1) /* auto reonnect (clean mode) after blocklisted */ |
3d14c5d2 YS |
34 | #define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ |
35 | #define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ | |
36 | #define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ | |
ad1fee96 | 37 | #define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ |
a40dc6cc | 38 | #define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ |
99ccbd22 | 39 | #define CEPH_MOUNT_OPT_FSCACHE (1<<10) /* use fscache */ |
10183a69 | 40 | #define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11) /* no pool permission check */ |
e9e427f0 | 41 | #define CEPH_MOUNT_OPT_MOUNTWAIT (1<<12) /* mount waits if no mds is up */ |
9122eed5 | 42 | #define CEPH_MOUNT_OPT_NOQUOTADF (1<<13) /* no root dir quota in statfs */ |
ea4cdc54 | 43 | #define CEPH_MOUNT_OPT_NOCOPYFROM (1<<14) /* don't use RADOS 'copy-from' op */ |
2ccb4546 | 44 | #define CEPH_MOUNT_OPT_ASYNC_DIROPS (1<<15) /* allow async directory ops */ |
94cc0877 | 45 | #define CEPH_MOUNT_OPT_NOPAGECACHE (1<<16) /* bypass pagecache altogether */ |
6a259382 | 46 | |
6f9718fe LH |
47 | #define CEPH_MOUNT_OPT_DEFAULT \ |
48 | (CEPH_MOUNT_OPT_DCACHE | \ | |
f7a67b46 JL |
49 | CEPH_MOUNT_OPT_NOCOPYFROM | \ |
50 | CEPH_MOUNT_OPT_ASYNC_DIROPS) | |
de57606c | 51 | |
3d14c5d2 | 52 | #define ceph_set_mount_opt(fsc, opt) \ |
2ccb4546 JL |
53 | (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt |
54 | #define ceph_clear_mount_opt(fsc, opt) \ | |
55 | (fsc)->mount_options->flags &= ~CEPH_MOUNT_OPT_##opt | |
3d14c5d2 YS |
56 | #define ceph_test_mount_opt(fsc, opt) \ |
57 | (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) | |
de57606c | 58 | |
aa187926 YZ |
59 | /* max size of osd read request, limited by libceph */ |
60 | #define CEPH_MAX_READ_SIZE CEPH_MSG_MAX_DATA_LEN | |
95cca2b4 YZ |
61 | /* osd has a configurable limitaion of max write size. |
62 | * CEPH_MSG_MAX_DATA_LEN should be small enough. */ | |
63 | #define CEPH_MAX_WRITE_SIZE CEPH_MSG_MAX_DATA_LEN | |
7c94ba27 | 64 | #define CEPH_RASIZE_DEFAULT (8192*1024) /* max readahead */ |
3d14c5d2 YS |
65 | #define CEPH_MAX_READDIR_DEFAULT 1024 |
66 | #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) | |
67 | #define CEPH_SNAPDIRNAME_DEFAULT ".snap" | |
de57606c | 68 | |
4214fb15 YZ |
69 | /* |
70 | * Delay telling the MDS we no longer want caps, in case we reopen | |
71 | * the file. Delay a minimum amount of time, even if we send a cap | |
72 | * message for some other reason. Otherwise, take the oppotunity to | |
73 | * update the mds to avoid sending another message later. | |
74 | */ | |
75 | #define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */ | |
76 | #define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */ | |
77 | ||
3d14c5d2 | 78 | struct ceph_mount_options { |
ad8c28a9 | 79 | unsigned int flags; |
3d14c5d2 | 80 | |
ad8c28a9 JL |
81 | unsigned int wsize; /* max write size */ |
82 | unsigned int rsize; /* max read size */ | |
83 | unsigned int rasize; /* max readahead */ | |
84 | unsigned int congestion_kb; /* max writeback in flight */ | |
85 | unsigned int caps_wanted_delay_min, caps_wanted_delay_max; | |
fe33032d | 86 | int caps_max; |
ad8c28a9 JL |
87 | unsigned int max_readdir; /* max readdir result (entries) */ |
88 | unsigned int max_readdir_bytes; /* max readdir result (bytes) */ | |
de57606c | 89 | |
7b19b4db VS |
90 | bool new_dev_syntax; |
91 | ||
3d14c5d2 YS |
92 | /* |
93 | * everything above this point can be memcmp'd; everything below | |
94 | * is handled in compare_mount_options() | |
95 | */ | |
de57606c | 96 | |
3d14c5d2 | 97 | char *snapdir_name; /* default ".snap" */ |
430afbad | 98 | char *mds_namespace; /* default NULL */ |
b27a939e | 99 | char *server_path; /* default NULL (means "/") */ |
1d8f8360 | 100 | char *fscache_uniq; /* default NULL */ |
7b19b4db | 101 | char *mon_addr; |
3d14c5d2 | 102 | }; |
de57606c | 103 | |
3d14c5d2 | 104 | struct ceph_fs_client { |
de57606c SW |
105 | struct super_block *sb; |
106 | ||
18f473b3 XL |
107 | struct list_head metric_wakeup; |
108 | ||
3d14c5d2 YS |
109 | struct ceph_mount_options *mount_options; |
110 | struct ceph_client *client; | |
de57606c | 111 | |
aa5c7910 | 112 | int mount_state; |
81f148a9 | 113 | |
0b98acd6 | 114 | bool blocklisted; |
131d7eb4 | 115 | |
78beb0ff LH |
116 | bool have_copy_from2; |
117 | ||
81f148a9 | 118 | u32 filp_gen; |
719784ba | 119 | loff_t max_file_size; |
85ccce43 | 120 | |
3d14c5d2 | 121 | struct ceph_mds_client *mdsc; |
de57606c | 122 | |
e3ec8d68 YZ |
123 | atomic_long_t writeback_count; |
124 | ||
1cf89a8d | 125 | struct workqueue_struct *inode_wq; |
e3ec8d68 | 126 | struct workqueue_struct *cap_wq; |
de57606c | 127 | |
0743304d | 128 | #ifdef CONFIG_DEBUG_FS |
3d14c5d2 | 129 | struct dentry *debugfs_dentry_lru, *debugfs_caps; |
2baba250 | 130 | struct dentry *debugfs_congestion_kb; |
06edf046 | 131 | struct dentry *debugfs_bdi; |
3d14c5d2 | 132 | struct dentry *debugfs_mdsc, *debugfs_mdsmap; |
247b1f19 | 133 | struct dentry *debugfs_status; |
14ed9703 | 134 | struct dentry *debugfs_mds_sessions; |
cbed4ff7 | 135 | struct dentry *debugfs_metrics_dir; |
0743304d | 136 | #endif |
99ccbd22 MT |
137 | |
138 | #ifdef CONFIG_CEPH_FSCACHE | |
400e1286 | 139 | struct fscache_volume *fscache; |
99ccbd22 | 140 | #endif |
de57606c SW |
141 | }; |
142 | ||
3d14c5d2 | 143 | |
de57606c SW |
144 | /* |
145 | * File i/o capability. This tracks shared state with the metadata | |
146 | * server that allows us to cache or writeback attributes or to read | |
147 | * and write data. For any given inode, we should have one or more | |
148 | * capabilities, one issued by each metadata server, and our | |
149 | * cumulative access is the OR of all issued capabilities. | |
150 | * | |
151 | * Each cap is referenced by the inode's i_caps rbtree and by per-mds | |
152 | * session capability lists. | |
153 | */ | |
154 | struct ceph_cap { | |
155 | struct ceph_inode_info *ci; | |
156 | struct rb_node ci_node; /* per-ci cap tree */ | |
157 | struct ceph_mds_session *session; | |
158 | struct list_head session_caps; /* per-session caplist */ | |
de57606c | 159 | u64 cap_id; /* unique cap id (mds provided) */ |
745a8e3b YZ |
160 | union { |
161 | /* in-use caps */ | |
162 | struct { | |
163 | int issued; /* latest, from the mds */ | |
164 | int implemented; /* implemented superset of | |
165 | issued (for revocation) */ | |
c74d79af JL |
166 | int mds; /* mds index for this cap */ |
167 | int mds_wanted; /* caps wanted from this mds */ | |
745a8e3b YZ |
168 | }; |
169 | /* caps to release */ | |
170 | struct { | |
171 | u64 cap_ino; | |
172 | int queue_release; | |
173 | }; | |
174 | }; | |
685f9a5d SW |
175 | u32 seq, issue_seq, mseq; |
176 | u32 cap_gen; /* active/stale cycle */ | |
de57606c SW |
177 | unsigned long last_used; |
178 | struct list_head caps_item; | |
179 | }; | |
180 | ||
a0d93e32 YZ |
181 | #define CHECK_CAPS_AUTHONLY 1 /* only check auth cap */ |
182 | #define CHECK_CAPS_FLUSH 2 /* flush any dirty caps */ | |
183 | #define CHECK_CAPS_NOINVAL 4 /* don't invalidate pagecache */ | |
de57606c | 184 | |
0e294387 YZ |
185 | struct ceph_cap_flush { |
186 | u64 tid; | |
b2f9fa1f | 187 | int caps; |
c8799fc4 | 188 | bool wake; /* wake up flush waiters when finish ? */ |
b2f9fa1f | 189 | bool is_capsnap; /* true means capsnap */ |
0e294387 YZ |
190 | struct list_head g_list; // global |
191 | struct list_head i_list; // per inode | |
192 | }; | |
193 | ||
de57606c SW |
194 | /* |
195 | * Snapped cap state that is pending flush to mds. When a snapshot occurs, | |
196 | * we first complete any in-process sync writes and writeback any dirty | |
197 | * data before flushing the snapped state (tracked here) back to the MDS. | |
198 | */ | |
199 | struct ceph_cap_snap { | |
805692d0 | 200 | refcount_t nref; |
0e294387 | 201 | struct list_head ci_item; |
de57606c | 202 | |
0e294387 YZ |
203 | struct ceph_cap_flush cap_flush; |
204 | ||
205 | u64 follows; | |
de57606c SW |
206 | int issued, dirty; |
207 | struct ceph_snap_context *context; | |
208 | ||
5706b27d | 209 | umode_t mode; |
05cb11c1 EB |
210 | kuid_t uid; |
211 | kgid_t gid; | |
de57606c | 212 | |
4a625be4 | 213 | struct ceph_buffer *xattr_blob; |
de57606c SW |
214 | u64 xattr_version; |
215 | ||
216 | u64 size; | |
176c77c9 | 217 | u64 change_attr; |
ec62b894 | 218 | struct timespec64 mtime, atime, ctime, btime; |
de57606c | 219 | u64 time_warp_seq; |
5f743e45 YZ |
220 | u64 truncate_size; |
221 | u32 truncate_seq; | |
de57606c SW |
222 | int writing; /* a sync write is still in progress */ |
223 | int dirty_pages; /* dirty pages awaiting writeback */ | |
e20d258d | 224 | bool inline_data; |
86056090 | 225 | bool need_flush; |
de57606c SW |
226 | }; |
227 | ||
228 | static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) | |
229 | { | |
805692d0 | 230 | if (refcount_dec_and_test(&capsnap->nref)) { |
4a625be4 SW |
231 | if (capsnap->xattr_blob) |
232 | ceph_buffer_put(capsnap->xattr_blob); | |
de57606c | 233 | kfree(capsnap); |
4a625be4 | 234 | } |
de57606c SW |
235 | } |
236 | ||
237 | /* | |
238 | * The frag tree describes how a directory is fragmented, potentially across | |
239 | * multiple metadata servers. It is also used to indicate points where | |
240 | * metadata authority is delegated, and whether/where metadata is replicated. | |
241 | * | |
242 | * A _leaf_ frag will be present in the i_fragtree IFF there is | |
243 | * delegation info. That is, if mds >= 0 || ndist > 0. | |
244 | */ | |
245 | #define CEPH_MAX_DIRFRAG_REP 4 | |
246 | ||
247 | struct ceph_inode_frag { | |
248 | struct rb_node node; | |
249 | ||
250 | /* fragtree state */ | |
251 | u32 frag; | |
252 | int split_by; /* i.e. 2^(split_by) children */ | |
253 | ||
254 | /* delegation and replication info */ | |
255 | int mds; /* -1 if same authority as parent */ | |
256 | int ndist; /* >0 if replicated */ | |
257 | int dist[CEPH_MAX_DIRFRAG_REP]; | |
258 | }; | |
259 | ||
260 | /* | |
261 | * We cache inode xattrs as an encoded blob until they are first used, | |
262 | * at which point we parse them into an rbtree. | |
263 | */ | |
264 | struct ceph_inode_xattr { | |
265 | struct rb_node node; | |
266 | ||
267 | const char *name; | |
268 | int name_len; | |
269 | const char *val; | |
270 | int val_len; | |
271 | int dirty; | |
272 | ||
273 | int should_free_name; | |
274 | int should_free_val; | |
275 | }; | |
276 | ||
3d14c5d2 YS |
277 | /* |
278 | * Ceph dentry state | |
279 | */ | |
280 | struct ceph_dentry_info { | |
37c4efc1 | 281 | struct dentry *dentry; |
3d14c5d2 | 282 | struct ceph_mds_session *lease_session; |
37c4efc1 YZ |
283 | struct list_head lease_list; |
284 | unsigned flags; | |
97aeb6bf YZ |
285 | int lease_shared_gen; |
286 | u32 lease_gen; | |
3d14c5d2 YS |
287 | u32 lease_seq; |
288 | unsigned long lease_renew_after, lease_renew_from; | |
9b16f03c | 289 | unsigned long time; |
3d14c5d2 YS |
290 | u64 offset; |
291 | }; | |
292 | ||
37c4efc1 YZ |
293 | #define CEPH_DENTRY_REFERENCED 1 |
294 | #define CEPH_DENTRY_LEASE_LIST 2 | |
295 | #define CEPH_DENTRY_SHRINK_LIST 4 | |
f5e17aed | 296 | #define CEPH_DENTRY_PRIMARY_LINK 8 |
37c4efc1 | 297 | |
de57606c SW |
298 | struct ceph_inode_xattrs_info { |
299 | /* | |
300 | * (still encoded) xattr blob. we avoid the overhead of parsing | |
301 | * this until someone actually calls getxattr, etc. | |
302 | * | |
303 | * blob->vec.iov_len == 4 implies there are no xattrs; blob == | |
304 | * NULL means we don't know. | |
305 | */ | |
306 | struct ceph_buffer *blob, *prealloc_blob; | |
307 | ||
308 | struct rb_root index; | |
309 | bool dirty; | |
310 | int count; | |
311 | int names_size; | |
312 | int vals_size; | |
313 | u64 version, index_version; | |
314 | }; | |
315 | ||
316 | /* | |
317 | * Ceph inode. | |
318 | */ | |
de57606c SW |
319 | struct ceph_inode_info { |
320 | struct ceph_vino i_vino; /* ceph ino + snap */ | |
321 | ||
be655596 SW |
322 | spinlock_t i_ceph_lock; |
323 | ||
de57606c | 324 | u64 i_version; |
31c542a1 | 325 | u64 i_inline_version; |
de57606c SW |
326 | u32 i_time_warp_seq; |
327 | ||
891f3f5a | 328 | unsigned long i_ceph_flags; |
fdd4e158 YZ |
329 | atomic64_t i_release_count; |
330 | atomic64_t i_ordered_count; | |
331 | atomic64_t i_complete_seq[2]; | |
de57606c | 332 | |
6c0f3af7 | 333 | struct ceph_dir_layout i_dir_layout; |
de57606c | 334 | struct ceph_file_layout i_layout; |
785892fe | 335 | struct ceph_file_layout i_cached_layout; // for async creates |
de57606c SW |
336 | char *i_symlink; |
337 | ||
338 | /* for dirs */ | |
9bbeab41 | 339 | struct timespec64 i_rctime; |
e7f72952 | 340 | u64 i_rbytes, i_rfiles, i_rsubdirs, i_rsnaps; |
de57606c | 341 | u64 i_files, i_subdirs; |
de57606c | 342 | |
fb18a575 LH |
343 | /* quotas */ |
344 | u64 i_max_bytes, i_max_files; | |
345 | ||
08796873 YZ |
346 | s32 i_dir_pin; |
347 | ||
de57606c | 348 | struct rb_root i_fragtree; |
1b1bc16d | 349 | int i_fragtree_nsplits; |
de57606c SW |
350 | struct mutex i_fragtree_mutex; |
351 | ||
352 | struct ceph_inode_xattrs_info i_xattrs; | |
353 | ||
be655596 | 354 | /* capabilities. protected _both_ by i_ceph_lock and cap->session's |
de57606c SW |
355 | * s_mutex. */ |
356 | struct rb_root i_caps; /* cap list */ | |
357 | struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ | |
358 | unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ | |
1cf03a68 JL |
359 | |
360 | /* | |
f1f565a2 | 361 | * Link to the auth cap's session's s_cap_dirty list. s_cap_dirty |
1cf03a68 JL |
362 | * is protected by the mdsc->cap_dirty_lock, but each individual item |
363 | * is also protected by the inode's i_ceph_lock. Walking s_cap_dirty | |
364 | * requires the mdsc->cap_dirty_lock. List presence for an item can | |
365 | * be tested under the i_ceph_lock. Changing anything requires both. | |
366 | */ | |
367 | struct list_head i_dirty_item; | |
368 | ||
369 | /* | |
829ad4db JL |
370 | * Link to session's s_cap_flushing list. Protected in a similar |
371 | * fashion to i_dirty_item, but also by the s_mutex for changes. The | |
372 | * s_cap_flushing list can be walked while holding either the s_mutex | |
373 | * or msdc->cap_dirty_lock. List presence can also be checked while | |
374 | * holding the i_ceph_lock for this inode. | |
1cf03a68 JL |
375 | */ |
376 | struct list_head i_flushing_item; | |
377 | ||
de57606c SW |
378 | /* we need to track cap writeback on a per-cap-bit basis, to allow |
379 | * overlapping, pipelined cap flushes to the mds. we can probably | |
380 | * reduce the tid to 8 bits if we're concerned about inode size. */ | |
f66fd9f0 | 381 | struct ceph_cap_flush *i_prealloc_cap_flush; |
e4500b5e | 382 | struct list_head i_cap_flush_list; |
de57606c | 383 | wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ |
de57606c SW |
384 | unsigned long i_hold_caps_max; /* jiffies */ |
385 | struct list_head i_cap_delay_list; /* for delayed cap release to mds */ | |
de57606c SW |
386 | struct ceph_cap_reservation i_cap_migration_resv; |
387 | struct list_head i_cap_snaps; /* snapped state pending flush to mds */ | |
7d8cb26d SW |
388 | struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or |
389 | dirty|flushing caps */ | |
de57606c SW |
390 | unsigned i_snap_caps; /* cap bits for snapped files */ |
391 | ||
719a2514 YZ |
392 | unsigned long i_last_rd; |
393 | unsigned long i_last_wr; | |
774a6a11 | 394 | int i_nr_by_mode[CEPH_FILE_MODE_BITS]; /* open file counts */ |
de57606c | 395 | |
b0d7c223 | 396 | struct mutex i_truncate_mutex; |
de57606c SW |
397 | u32 i_truncate_seq; /* last truncate to smaller size */ |
398 | u64 i_truncate_size; /* and the size we last truncated down to */ | |
399 | int i_truncate_pending; /* still need to call vmtruncate */ | |
400 | ||
401 | u64 i_max_size; /* max file size authorized by mds */ | |
402 | u64 i_reported_size; /* (max_)size reported to or requested of mds */ | |
403 | u64 i_wanted_max_size; /* offset we'd like to write too */ | |
404 | u64 i_requested_max_size; /* max_size we've requested */ | |
405 | ||
406 | /* held references to caps */ | |
407 | int i_pin_ref; | |
f85122af | 408 | int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref, i_fx_ref; |
de57606c | 409 | int i_wrbuffer_ref, i_wrbuffer_ref_head; |
89aa5930 | 410 | atomic_t i_filelock_ref; |
97aeb6bf | 411 | atomic_t i_shared_gen; /* increment each time we get FILE_SHARED */ |
cd045cb4 | 412 | u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ |
de57606c SW |
413 | u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ |
414 | ||
de57606c | 415 | struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ |
68cd5b4b | 416 | struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ |
de57606c SW |
417 | spinlock_t i_unsafe_lock; |
418 | ||
75c9627e YZ |
419 | union { |
420 | struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ | |
421 | struct ceph_snapid_map *i_snapid_map; /* snapid -> dev_t */ | |
422 | }; | |
de57606c SW |
423 | struct list_head i_snap_realm_item; |
424 | struct list_head i_snap_flush_item; | |
245ce991 | 425 | struct timespec64 i_btime; |
193e7b37 | 426 | struct timespec64 i_snap_btime; |
de57606c | 427 | |
1cf89a8d YZ |
428 | struct work_struct i_work; |
429 | unsigned long i_work_mask; | |
de57606c | 430 | |
99ccbd22 MT |
431 | #ifdef CONFIG_CEPH_FSCACHE |
432 | struct fscache_cookie *fscache; | |
99ccbd22 | 433 | #endif |
de57606c SW |
434 | struct inode vfs_inode; /* at end */ |
435 | }; | |
436 | ||
721d5c13 JL |
437 | static inline struct ceph_inode_info * |
438 | ceph_inode(const struct inode *inode) | |
de57606c | 439 | { |
fbbccec9 | 440 | return container_of(inode, struct ceph_inode_info, vfs_inode); |
de57606c SW |
441 | } |
442 | ||
721d5c13 JL |
443 | static inline struct ceph_fs_client * |
444 | ceph_inode_to_client(const struct inode *inode) | |
ad1fee96 YS |
445 | { |
446 | return (struct ceph_fs_client *)inode->i_sb->s_fs_info; | |
447 | } | |
448 | ||
721d5c13 JL |
449 | static inline struct ceph_fs_client * |
450 | ceph_sb_to_client(const struct super_block *sb) | |
ad1fee96 YS |
451 | { |
452 | return (struct ceph_fs_client *)sb->s_fs_info; | |
453 | } | |
454 | ||
2678da88 XL |
455 | static inline struct ceph_mds_client * |
456 | ceph_sb_to_mdsc(const struct super_block *sb) | |
457 | { | |
458 | return (struct ceph_mds_client *)ceph_sb_to_client(sb)->mdsc; | |
459 | } | |
460 | ||
721d5c13 JL |
461 | static inline struct ceph_vino |
462 | ceph_vino(const struct inode *inode) | |
3d14c5d2 YS |
463 | { |
464 | return ceph_inode(inode)->i_vino; | |
465 | } | |
466 | ||
ebce3eb2 | 467 | static inline u32 ceph_ino_to_ino32(u64 vino) |
ad1fee96 | 468 | { |
3310f754 AO |
469 | u32 ino = vino & 0xffffffff; |
470 | ino ^= vino >> 32; | |
ad1fee96 | 471 | if (!ino) |
a661fc56 | 472 | ino = 2; |
ad1fee96 YS |
473 | return ino; |
474 | } | |
475 | ||
476 | /* | |
ebce3eb2 JL |
477 | * Inode numbers in cephfs are 64 bits, but inode->i_ino is 32-bits on |
478 | * some arches. We generally do not use this value inside the ceph driver, but | |
479 | * we do want to set it to something, so that generic vfs code has an | |
480 | * appropriate value for tracepoints and the like. | |
3d14c5d2 | 481 | */ |
ebce3eb2 | 482 | static inline ino_t ceph_vino_to_ino_t(struct ceph_vino vino) |
3d14c5d2 | 483 | { |
ebce3eb2 JL |
484 | if (sizeof(ino_t) == sizeof(u32)) |
485 | return ceph_ino_to_ino32(vino.ino); | |
3310f754 | 486 | return (ino_t)vino.ino; |
ad1fee96 | 487 | } |
ad1fee96 | 488 | |
3d14c5d2 YS |
489 | /* for printf-style formatting */ |
490 | #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap | |
491 | ||
492 | static inline u64 ceph_ino(struct inode *inode) | |
493 | { | |
494 | return ceph_inode(inode)->i_vino.ino; | |
495 | } | |
ebce3eb2 | 496 | |
3d14c5d2 YS |
497 | static inline u64 ceph_snap(struct inode *inode) |
498 | { | |
499 | return ceph_inode(inode)->i_vino.snap; | |
500 | } | |
501 | ||
ebce3eb2 JL |
502 | /** |
503 | * ceph_present_ino - format an inode number for presentation to userland | |
504 | * @sb: superblock where the inode lives | |
505 | * @ino: inode number to (possibly) convert | |
506 | * | |
507 | * If the user mounted with the ino32 option, then the 64-bit value needs | |
508 | * to be converted to something that can fit inside 32 bits. Note that | |
509 | * internal kernel code never uses this value, so this is entirely for | |
510 | * userland consumption. | |
511 | */ | |
512 | static inline u64 ceph_present_ino(struct super_block *sb, u64 ino) | |
513 | { | |
514 | if (unlikely(ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))) | |
515 | return ceph_ino_to_ino32(ino); | |
516 | return ino; | |
517 | } | |
518 | ||
519 | static inline u64 ceph_present_inode(struct inode *inode) | |
520 | { | |
521 | return ceph_present_ino(inode->i_sb, ceph_ino(inode)); | |
522 | } | |
523 | ||
3d14c5d2 YS |
524 | static inline int ceph_ino_compare(struct inode *inode, void *data) |
525 | { | |
526 | struct ceph_vino *pvino = (struct ceph_vino *)data; | |
527 | struct ceph_inode_info *ci = ceph_inode(inode); | |
528 | return ci->i_vino.ino == pvino->ino && | |
529 | ci->i_vino.snap == pvino->snap; | |
530 | } | |
531 | ||
d4f6b31d JL |
532 | /* |
533 | * The MDS reserves a set of inodes for its own usage. These should never | |
534 | * be accessible by clients, and so the MDS has no reason to ever hand these | |
535 | * out. The range is CEPH_MDS_INO_MDSDIR_OFFSET..CEPH_INO_SYSTEM_BASE. | |
536 | * | |
537 | * These come from src/mds/mdstypes.h in the ceph sources. | |
538 | */ | |
0078ea3b JL |
539 | #define CEPH_MAX_MDS 0x100 |
540 | #define CEPH_NUM_STRAY 10 | |
d4f6b31d | 541 | #define CEPH_MDS_INO_MDSDIR_OFFSET (1 * CEPH_MAX_MDS) |
0078ea3b | 542 | #define CEPH_MDS_INO_LOG_OFFSET (2 * CEPH_MAX_MDS) |
d4f6b31d JL |
543 | #define CEPH_INO_SYSTEM_BASE ((6*CEPH_MAX_MDS) + (CEPH_MAX_MDS * CEPH_NUM_STRAY)) |
544 | ||
545 | static inline bool ceph_vino_is_reserved(const struct ceph_vino vino) | |
546 | { | |
0078ea3b JL |
547 | if (vino.ino >= CEPH_INO_SYSTEM_BASE || |
548 | vino.ino < CEPH_MDS_INO_MDSDIR_OFFSET) | |
549 | return false; | |
550 | ||
551 | /* Don't warn on mdsdirs */ | |
552 | WARN_RATELIMIT(vino.ino >= CEPH_MDS_INO_LOG_OFFSET, | |
553 | "Attempt to access reserved inode number 0x%llx", | |
554 | vino.ino); | |
555 | return true; | |
d4f6b31d | 556 | } |
ebce3eb2 | 557 | |
3d14c5d2 YS |
558 | static inline struct inode *ceph_find_inode(struct super_block *sb, |
559 | struct ceph_vino vino) | |
560 | { | |
d4f6b31d JL |
561 | if (ceph_vino_is_reserved(vino)) |
562 | return NULL; | |
563 | ||
ebce3eb2 JL |
564 | /* |
565 | * NB: The hashval will be run through the fs/inode.c hash function | |
566 | * anyway, so there is no need to squash the inode number down to | |
567 | * 32-bits first. Just use low-order bits on arches with 32-bit long. | |
568 | */ | |
569 | return ilookup5(sb, (unsigned long)vino.ino, ceph_ino_compare, &vino); | |
3d14c5d2 YS |
570 | } |
571 | ||
572 | ||
573 | /* | |
574 | * Ceph inode. | |
575 | */ | |
10183a69 | 576 | #define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ |
10183a69 | 577 | #define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ |
daca8bda JL |
578 | #define CEPH_I_POOL_PERM (1 << 3) /* pool rd/wr bits are valid */ |
579 | #define CEPH_I_POOL_RD (1 << 4) /* can read from pool */ | |
580 | #define CEPH_I_POOL_WR (1 << 5) /* can write to pool */ | |
581 | #define CEPH_I_SEC_INITED (1 << 6) /* security initialized */ | |
c0e385b1 YZ |
582 | #define CEPH_I_KICK_FLUSH (1 << 7) /* kick flushing caps */ |
583 | #define CEPH_I_FLUSH_SNAPS (1 << 8) /* need flush snapss */ | |
584 | #define CEPH_I_ERROR_WRITE (1 << 9) /* have seen write errors */ | |
585 | #define CEPH_I_ERROR_FILELOCK (1 << 10) /* have seen file lock errors */ | |
586 | #define CEPH_I_ODIRECT (1 << 11) /* inode in direct I/O mode */ | |
587 | #define CEPH_ASYNC_CREATE_BIT (12) /* async create in flight for this */ | |
891f3f5a | 588 | #define CEPH_I_ASYNC_CREATE (1 << CEPH_ASYNC_CREATE_BIT) |
5d6451b1 | 589 | #define CEPH_I_SHUTDOWN (1 << 13) /* inode is no longer usable */ |
26544c62 | 590 | |
1cf89a8d YZ |
591 | /* |
592 | * Masks of ceph inode work. | |
593 | */ | |
a8810cdc JL |
594 | #define CEPH_I_WORK_WRITEBACK 0 |
595 | #define CEPH_I_WORK_INVALIDATE_PAGES 1 | |
596 | #define CEPH_I_WORK_VMTRUNCATE 2 | |
597 | #define CEPH_I_WORK_CHECK_CAPS 3 | |
598 | #define CEPH_I_WORK_FLUSH_SNAPS 4 | |
1cf89a8d | 599 | |
26544c62 JL |
600 | /* |
601 | * We set the ERROR_WRITE bit when we start seeing write errors on an inode | |
602 | * and then clear it when they start succeeding. Note that we do a lockless | |
603 | * check first, and only take the lock if it looks like it needs to be changed. | |
604 | * The write submission code just takes this as a hint, so we're not too | |
605 | * worried if a few slip through in either direction. | |
606 | */ | |
607 | static inline void ceph_set_error_write(struct ceph_inode_info *ci) | |
608 | { | |
609 | if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE)) { | |
610 | spin_lock(&ci->i_ceph_lock); | |
611 | ci->i_ceph_flags |= CEPH_I_ERROR_WRITE; | |
612 | spin_unlock(&ci->i_ceph_lock); | |
613 | } | |
614 | } | |
615 | ||
616 | static inline void ceph_clear_error_write(struct ceph_inode_info *ci) | |
617 | { | |
618 | if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE) { | |
619 | spin_lock(&ci->i_ceph_lock); | |
620 | ci->i_ceph_flags &= ~CEPH_I_ERROR_WRITE; | |
621 | spin_unlock(&ci->i_ceph_lock); | |
622 | } | |
623 | } | |
3d14c5d2 | 624 | |
2f276c51 | 625 | static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, |
fdd4e158 YZ |
626 | long long release_count, |
627 | long long ordered_count) | |
de57606c | 628 | { |
74960773 AP |
629 | /* |
630 | * Makes sure operations that setup readdir cache (update page | |
631 | * cache and i_size) are strongly ordered w.r.t. the following | |
632 | * atomic64_set() operations. | |
633 | */ | |
634 | smp_mb(); | |
fdd4e158 YZ |
635 | atomic64_set(&ci->i_complete_seq[0], release_count); |
636 | atomic64_set(&ci->i_complete_seq[1], ordered_count); | |
de57606c SW |
637 | } |
638 | ||
2f276c51 | 639 | static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) |
de57606c | 640 | { |
fdd4e158 YZ |
641 | atomic64_inc(&ci->i_release_count); |
642 | } | |
643 | ||
644 | static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) | |
645 | { | |
646 | atomic64_inc(&ci->i_ordered_count); | |
2f276c51 | 647 | } |
de57606c | 648 | |
2f276c51 YZ |
649 | static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) |
650 | { | |
fdd4e158 YZ |
651 | return atomic64_read(&ci->i_complete_seq[0]) == |
652 | atomic64_read(&ci->i_release_count); | |
de57606c SW |
653 | } |
654 | ||
70db4f36 YZ |
655 | static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) |
656 | { | |
fdd4e158 YZ |
657 | return atomic64_read(&ci->i_complete_seq[0]) == |
658 | atomic64_read(&ci->i_release_count) && | |
659 | atomic64_read(&ci->i_complete_seq[1]) == | |
660 | atomic64_read(&ci->i_ordered_count); | |
70db4f36 YZ |
661 | } |
662 | ||
2f276c51 | 663 | static inline void ceph_dir_clear_complete(struct inode *inode) |
de57606c | 664 | { |
2f276c51 YZ |
665 | __ceph_dir_clear_complete(ceph_inode(inode)); |
666 | } | |
de57606c | 667 | |
70db4f36 | 668 | static inline void ceph_dir_clear_ordered(struct inode *inode) |
2f276c51 | 669 | { |
fdd4e158 | 670 | __ceph_dir_clear_ordered(ceph_inode(inode)); |
de57606c SW |
671 | } |
672 | ||
70db4f36 YZ |
673 | static inline bool ceph_dir_is_complete_ordered(struct inode *inode) |
674 | { | |
fdd4e158 YZ |
675 | bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode)); |
676 | smp_rmb(); | |
70db4f36 YZ |
677 | return ret; |
678 | } | |
de57606c SW |
679 | |
680 | /* find a specific frag @f */ | |
681 | extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, | |
682 | u32 f); | |
683 | ||
684 | /* | |
685 | * choose fragment for value @v. copy frag content to pfrag, if leaf | |
686 | * exists | |
687 | */ | |
688 | extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, | |
689 | struct ceph_inode_frag *pfrag, | |
690 | int *found); | |
691 | ||
1e9c2eb6 | 692 | static inline struct ceph_dentry_info *ceph_dentry(const struct dentry *dentry) |
de57606c SW |
693 | { |
694 | return (struct ceph_dentry_info *)dentry->d_fsdata; | |
695 | } | |
696 | ||
de57606c SW |
697 | /* |
698 | * caps helpers | |
699 | */ | |
700 | static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) | |
701 | { | |
702 | return !RB_EMPTY_ROOT(&ci->i_caps); | |
703 | } | |
704 | ||
705 | extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); | |
706 | extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); | |
1af16d54 XL |
707 | extern int __ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, int mask, |
708 | int t); | |
de57606c SW |
709 | extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, |
710 | struct ceph_cap *cap); | |
711 | ||
712 | static inline int ceph_caps_issued(struct ceph_inode_info *ci) | |
713 | { | |
714 | int issued; | |
be655596 | 715 | spin_lock(&ci->i_ceph_lock); |
de57606c | 716 | issued = __ceph_caps_issued(ci, NULL); |
be655596 | 717 | spin_unlock(&ci->i_ceph_lock); |
de57606c SW |
718 | return issued; |
719 | } | |
720 | ||
1af16d54 XL |
721 | static inline int ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, |
722 | int mask, int touch) | |
de57606c SW |
723 | { |
724 | int r; | |
be655596 | 725 | spin_lock(&ci->i_ceph_lock); |
1af16d54 | 726 | r = __ceph_caps_issued_mask_metric(ci, mask, touch); |
be655596 | 727 | spin_unlock(&ci->i_ceph_lock); |
de57606c SW |
728 | return r; |
729 | } | |
730 | ||
731 | static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) | |
732 | { | |
733 | return ci->i_dirty_caps | ci->i_flushing_caps; | |
734 | } | |
f66fd9f0 YZ |
735 | extern struct ceph_cap_flush *ceph_alloc_cap_flush(void); |
736 | extern void ceph_free_cap_flush(struct ceph_cap_flush *cf); | |
737 | extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, | |
738 | struct ceph_cap_flush **pcf); | |
de57606c | 739 | |
9563f88c YZ |
740 | extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, |
741 | struct ceph_cap *ocap, int mask); | |
de57606c SW |
742 | extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); |
743 | extern int __ceph_caps_used(struct ceph_inode_info *ci); | |
744 | ||
719a2514 YZ |
745 | static inline bool __ceph_is_file_opened(struct ceph_inode_info *ci) |
746 | { | |
747 | return ci->i_nr_by_mode[0]; | |
748 | } | |
de57606c | 749 | extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); |
525d15e8 | 750 | extern int __ceph_caps_wanted(struct ceph_inode_info *ci); |
de57606c SW |
751 | |
752 | /* what the mds thinks we want */ | |
c1944fed | 753 | extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check); |
de57606c | 754 | |
37151668 YS |
755 | extern void ceph_caps_init(struct ceph_mds_client *mdsc); |
756 | extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); | |
fe33032d YZ |
757 | extern void ceph_adjust_caps_max_min(struct ceph_mds_client *mdsc, |
758 | struct ceph_mount_options *fsopt); | |
e30ee581 | 759 | extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, |
37151668 | 760 | struct ceph_cap_reservation *ctx, int need); |
7bf8f736 | 761 | extern void ceph_unreserve_caps(struct ceph_mds_client *mdsc, |
37151668 | 762 | struct ceph_cap_reservation *ctx); |
3d14c5d2 | 763 | extern void ceph_reservation_status(struct ceph_fs_client *client, |
de57606c | 764 | int *total, int *avail, int *used, |
85ccce43 | 765 | int *reserved, int *min); |
de57606c | 766 | |
de57606c | 767 | |
de57606c SW |
768 | |
769 | /* | |
770 | * we keep buffered readdir results attached to file->private_data | |
771 | */ | |
4918b6d1 | 772 | #define CEPH_F_SYNC 1 |
9cfa1098 | 773 | #define CEPH_F_ATEND 2 |
4918b6d1 | 774 | |
de57606c | 775 | struct ceph_file_info { |
252c6728 SW |
776 | short fmode; /* initialized on open */ |
777 | short flags; /* CEPH_F_* */ | |
de57606c | 778 | |
5d988308 YZ |
779 | spinlock_t rw_contexts_lock; |
780 | struct list_head rw_contexts; | |
f4b97866 | 781 | |
81f148a9 | 782 | u32 filp_gen; |
ff5d913d | 783 | atomic_t num_locks; |
bb48bd4d CX |
784 | }; |
785 | ||
786 | struct ceph_dir_file_info { | |
787 | struct ceph_file_info file_info; | |
5d988308 | 788 | |
de57606c SW |
789 | /* readdir: position within the dir */ |
790 | u32 frag; | |
791 | struct ceph_mds_request *last_readdir; | |
de57606c SW |
792 | |
793 | /* readdir: position within a frag */ | |
f0494206 | 794 | unsigned next_offset; /* offset of next chunk (last_name's + 1) */ |
de57606c | 795 | char *last_name; /* last entry in previous chunk */ |
fdd4e158 YZ |
796 | long long dir_release_count; |
797 | long long dir_ordered_count; | |
798 | int readdir_cache_idx; | |
de57606c SW |
799 | |
800 | /* used for -o dirstat read() on directory thing */ | |
801 | char *dir_info; | |
802 | int dir_info_len; | |
803 | }; | |
804 | ||
5d988308 YZ |
805 | struct ceph_rw_context { |
806 | struct list_head list; | |
807 | struct task_struct *thread; | |
808 | int caps; | |
809 | }; | |
810 | ||
811 | #define CEPH_DEFINE_RW_CONTEXT(_name, _caps) \ | |
812 | struct ceph_rw_context _name = { \ | |
813 | .thread = current, \ | |
814 | .caps = _caps, \ | |
815 | } | |
816 | ||
817 | static inline void ceph_add_rw_context(struct ceph_file_info *cf, | |
818 | struct ceph_rw_context *ctx) | |
819 | { | |
820 | spin_lock(&cf->rw_contexts_lock); | |
821 | list_add(&ctx->list, &cf->rw_contexts); | |
822 | spin_unlock(&cf->rw_contexts_lock); | |
823 | } | |
824 | ||
825 | static inline void ceph_del_rw_context(struct ceph_file_info *cf, | |
826 | struct ceph_rw_context *ctx) | |
827 | { | |
828 | spin_lock(&cf->rw_contexts_lock); | |
829 | list_del(&ctx->list); | |
830 | spin_unlock(&cf->rw_contexts_lock); | |
831 | } | |
832 | ||
833 | static inline struct ceph_rw_context* | |
834 | ceph_find_rw_context(struct ceph_file_info *cf) | |
835 | { | |
836 | struct ceph_rw_context *ctx, *found = NULL; | |
837 | spin_lock(&cf->rw_contexts_lock); | |
838 | list_for_each_entry(ctx, &cf->rw_contexts, list) { | |
839 | if (ctx->thread == current) { | |
840 | found = ctx; | |
841 | break; | |
842 | } | |
843 | } | |
844 | spin_unlock(&cf->rw_contexts_lock); | |
845 | return found; | |
846 | } | |
847 | ||
fdd4e158 YZ |
848 | struct ceph_readdir_cache_control { |
849 | struct page *page; | |
850 | struct dentry **dentries; | |
851 | int index; | |
852 | }; | |
de57606c | 853 | |
de57606c SW |
854 | /* |
855 | * A "snap realm" describes a subset of the file hierarchy sharing | |
856 | * the same set of snapshots that apply to it. The realms themselves | |
857 | * are organized into a hierarchy, such that children inherit (some of) | |
858 | * the snapshots of their parents. | |
859 | * | |
860 | * All inodes within the realm that have capabilities are linked into a | |
861 | * per-realm list. | |
862 | */ | |
863 | struct ceph_snap_realm { | |
864 | u64 ino; | |
e3161f17 | 865 | struct inode *inode; |
de57606c | 866 | atomic_t nref; |
a105f00c SW |
867 | struct rb_node node; |
868 | ||
de57606c SW |
869 | u64 created, seq; |
870 | u64 parent_ino; | |
871 | u64 parent_since; /* snapid when our current parent became so */ | |
872 | ||
873 | u64 *prior_parent_snaps; /* snaps inherited from any parents we */ | |
aa711ee3 | 874 | u32 num_prior_parent_snaps; /* had prior to parent_since */ |
de57606c | 875 | u64 *snaps; /* snaps specific to this realm */ |
aa711ee3 | 876 | u32 num_snaps; |
de57606c SW |
877 | |
878 | struct ceph_snap_realm *parent; | |
879 | struct list_head children; /* list of child realms */ | |
880 | struct list_head child_item; | |
881 | ||
882 | struct list_head empty_item; /* if i have ref==0 */ | |
883 | ||
ae00d4f3 SW |
884 | struct list_head dirty_item; /* if realm needs new context */ |
885 | ||
de57606c SW |
886 | /* the current set of snaps for this realm */ |
887 | struct ceph_snap_context *cached_context; | |
888 | ||
889 | struct list_head inodes_with_caps; | |
890 | spinlock_t inodes_with_caps_lock; | |
891 | }; | |
892 | ||
3d14c5d2 | 893 | static inline int default_congestion_kb(void) |
de57606c | 894 | { |
3d14c5d2 YS |
895 | int congestion_kb; |
896 | ||
897 | /* | |
898 | * Copied from NFS | |
899 | * | |
900 | * congestion size, scale with available memory. | |
901 | * | |
902 | * 64MB: 8192k | |
903 | * 128MB: 11585k | |
904 | * 256MB: 16384k | |
905 | * 512MB: 23170k | |
906 | * 1GB: 32768k | |
907 | * 2GB: 46340k | |
908 | * 4GB: 65536k | |
909 | * 8GB: 92681k | |
910 | * 16GB: 131072k | |
911 | * | |
912 | * This allows larger machines to have larger/more transfers. | |
913 | * Limit the default to 256M | |
914 | */ | |
ca79b0c2 | 915 | congestion_kb = (16*int_sqrt(totalram_pages())) << (PAGE_SHIFT-10); |
3d14c5d2 YS |
916 | if (congestion_kb > 256*1024) |
917 | congestion_kb = 256*1024; | |
918 | ||
919 | return congestion_kb; | |
de57606c SW |
920 | } |
921 | ||
922 | ||
d468e729 YZ |
923 | /* super.c */ |
924 | extern int ceph_force_reconnect(struct super_block *sb); | |
de57606c SW |
925 | /* snap.c */ |
926 | struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, | |
927 | u64 ino); | |
928 | extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, | |
929 | struct ceph_snap_realm *realm); | |
930 | extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, | |
931 | struct ceph_snap_realm *realm); | |
932 | extern int ceph_update_snap_trace(struct ceph_mds_client *m, | |
982d6011 YZ |
933 | void *p, void *e, bool deletion, |
934 | struct ceph_snap_realm **realm_ret); | |
0ba92e1c | 935 | void ceph_change_snap_realm(struct inode *inode, struct ceph_snap_realm *realm); |
de57606c | 936 | extern void ceph_handle_snap(struct ceph_mds_client *mdsc, |
2600d2dd | 937 | struct ceph_mds_session *session, |
de57606c | 938 | struct ceph_msg *msg); |
de57606c SW |
939 | extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, |
940 | struct ceph_cap_snap *capsnap); | |
941 | extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); | |
942 | ||
75c9627e YZ |
943 | extern struct ceph_snapid_map *ceph_get_snapid_map(struct ceph_mds_client *mdsc, |
944 | u64 snap); | |
945 | extern void ceph_put_snapid_map(struct ceph_mds_client* mdsc, | |
946 | struct ceph_snapid_map *sm); | |
947 | extern void ceph_trim_snapid_map(struct ceph_mds_client *mdsc); | |
948 | extern void ceph_cleanup_snapid_map(struct ceph_mds_client *mdsc); | |
631ed4b0 | 949 | void ceph_umount_begin(struct super_block *sb); |
75c9627e YZ |
950 | |
951 | ||
de57606c SW |
952 | /* |
953 | * a cap_snap is "pending" if it is still awaiting an in-progress | |
954 | * sync write (that may/may not still update size, mtime, etc.). | |
955 | */ | |
956 | static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) | |
957 | { | |
958 | return !list_empty(&ci->i_cap_snaps) && | |
86056090 YZ |
959 | list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap, |
960 | ci_item)->writing; | |
de57606c SW |
961 | } |
962 | ||
de57606c | 963 | /* inode.c */ |
966c7160 JL |
964 | struct ceph_mds_reply_info_in; |
965 | struct ceph_mds_reply_dirfrag; | |
966 | ||
de57606c SW |
967 | extern const struct inode_operations ceph_file_iops; |
968 | ||
969 | extern struct inode *ceph_alloc_inode(struct super_block *sb); | |
87bc5b89 | 970 | extern void ceph_evict_inode(struct inode *inode); |
cfa6d412 | 971 | extern void ceph_free_inode(struct inode *inode); |
de57606c SW |
972 | |
973 | extern struct inode *ceph_get_inode(struct super_block *sb, | |
974 | struct ceph_vino vino); | |
975 | extern struct inode *ceph_get_snapdir(struct inode *parent); | |
976 | extern int ceph_fill_file_size(struct inode *inode, int issued, | |
977 | u32 truncate_seq, u64 truncate_size, u64 size); | |
978 | extern void ceph_fill_file_time(struct inode *inode, int issued, | |
9bbeab41 AB |
979 | u64 time_warp_seq, struct timespec64 *ctime, |
980 | struct timespec64 *mtime, | |
981 | struct timespec64 *atime); | |
966c7160 JL |
982 | extern int ceph_fill_inode(struct inode *inode, struct page *locked_page, |
983 | struct ceph_mds_reply_info_in *iinfo, | |
984 | struct ceph_mds_reply_dirfrag *dirinfo, | |
985 | struct ceph_mds_session *session, int cap_fmode, | |
986 | struct ceph_cap_reservation *caps_reservation); | |
de57606c | 987 | extern int ceph_fill_trace(struct super_block *sb, |
f5a03b08 | 988 | struct ceph_mds_request *req); |
de57606c SW |
989 | extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, |
990 | struct ceph_mds_session *session); | |
991 | ||
992 | extern int ceph_inode_holds_cap(struct inode *inode, int mask); | |
993 | ||
efb0ca76 | 994 | extern bool ceph_inode_set_size(struct inode *inode, loff_t size); |
b415bf4f | 995 | extern void __ceph_do_pending_vmtruncate(struct inode *inode); |
64f28c62 | 996 | |
64f28c62 JL |
997 | void ceph_queue_inode_work(struct inode *inode, int work_bit); |
998 | ||
999 | static inline void ceph_queue_vmtruncate(struct inode *inode) | |
1000 | { | |
1001 | ceph_queue_inode_work(inode, CEPH_I_WORK_VMTRUNCATE); | |
1002 | } | |
1003 | ||
1004 | static inline void ceph_queue_invalidate(struct inode *inode) | |
1005 | { | |
1006 | ceph_queue_inode_work(inode, CEPH_I_WORK_INVALIDATE_PAGES); | |
1007 | } | |
1008 | ||
1009 | static inline void ceph_queue_writeback(struct inode *inode) | |
1010 | { | |
1011 | ceph_queue_inode_work(inode, CEPH_I_WORK_WRITEBACK); | |
1012 | } | |
1013 | ||
a8810cdc JL |
1014 | static inline void ceph_queue_check_caps(struct inode *inode) |
1015 | { | |
1016 | ceph_queue_inode_work(inode, CEPH_I_WORK_CHECK_CAPS); | |
1017 | } | |
1018 | ||
1019 | static inline void ceph_queue_flush_snaps(struct inode *inode) | |
1020 | { | |
1021 | ceph_queue_inode_work(inode, CEPH_I_WORK_FLUSH_SNAPS); | |
1022 | } | |
1023 | ||
01deead0 YZ |
1024 | extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, |
1025 | int mask, bool force); | |
1026 | static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) | |
1027 | { | |
1028 | return __ceph_do_getattr(inode, NULL, mask, force); | |
1029 | } | |
549c7297 CB |
1030 | extern int ceph_permission(struct user_namespace *mnt_userns, |
1031 | struct inode *inode, int mask); | |
a26fecca | 1032 | extern int __ceph_setattr(struct inode *inode, struct iattr *attr); |
549c7297 CB |
1033 | extern int ceph_setattr(struct user_namespace *mnt_userns, |
1034 | struct dentry *dentry, struct iattr *attr); | |
1035 | extern int ceph_getattr(struct user_namespace *mnt_userns, | |
1036 | const struct path *path, struct kstat *stat, | |
a528d35e | 1037 | u32 request_mask, unsigned int flags); |
5d6451b1 JL |
1038 | void ceph_inode_shutdown(struct inode *inode); |
1039 | ||
1040 | static inline bool ceph_inode_is_shutdown(struct inode *inode) | |
1041 | { | |
1042 | unsigned long flags = READ_ONCE(ceph_inode(inode)->i_ceph_flags); | |
1043 | struct ceph_fs_client *fsc = ceph_inode_to_client(inode); | |
1044 | int state = READ_ONCE(fsc->mount_state); | |
1045 | ||
1046 | return (flags & CEPH_I_SHUTDOWN) || state >= CEPH_MOUNT_SHUTDOWN; | |
1047 | } | |
de57606c SW |
1048 | |
1049 | /* xattr.c */ | |
a26fecca | 1050 | int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); |
7221fe4c | 1051 | ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); |
de57606c | 1052 | extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); |
12fe3dda | 1053 | extern struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci); |
de57606c | 1054 | extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); |
b1ee94aa | 1055 | extern const struct xattr_handler *ceph_xattr_handlers[]; |
de57606c | 1056 | |
5c31e92d YZ |
1057 | struct ceph_acl_sec_ctx { |
1058 | #ifdef CONFIG_CEPH_FS_POSIX_ACL | |
1059 | void *default_acl; | |
1060 | void *acl; | |
ac6713cc YZ |
1061 | #endif |
1062 | #ifdef CONFIG_CEPH_FS_SECURITY_LABEL | |
1063 | void *sec_ctx; | |
1064 | u32 sec_ctxlen; | |
5c31e92d YZ |
1065 | #endif |
1066 | struct ceph_pagelist *pagelist; | |
1067 | }; | |
1068 | ||
315f2408 YZ |
1069 | #ifdef CONFIG_SECURITY |
1070 | extern bool ceph_security_xattr_deadlock(struct inode *in); | |
1071 | extern bool ceph_security_xattr_wanted(struct inode *in); | |
1072 | #else | |
1073 | static inline bool ceph_security_xattr_deadlock(struct inode *in) | |
1074 | { | |
1075 | return false; | |
1076 | } | |
1077 | static inline bool ceph_security_xattr_wanted(struct inode *in) | |
1078 | { | |
1079 | return false; | |
1080 | } | |
1081 | #endif | |
1082 | ||
ac6713cc YZ |
1083 | #ifdef CONFIG_CEPH_FS_SECURITY_LABEL |
1084 | extern int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, | |
1085 | struct ceph_acl_sec_ctx *ctx); | |
668959a5 JL |
1086 | static inline void ceph_security_invalidate_secctx(struct inode *inode) |
1087 | { | |
1088 | security_inode_invalidate_secctx(inode); | |
1089 | } | |
ac6713cc YZ |
1090 | #else |
1091 | static inline int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, | |
1092 | struct ceph_acl_sec_ctx *ctx) | |
1093 | { | |
1094 | return 0; | |
1095 | } | |
1096 | static inline void ceph_security_invalidate_secctx(struct inode *inode) | |
1097 | { | |
1098 | } | |
1099 | #endif | |
1100 | ||
5c31e92d | 1101 | void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx); |
7221fe4c | 1102 | |
5c31e92d | 1103 | /* acl.c */ |
7221fe4c GZ |
1104 | #ifdef CONFIG_CEPH_FS_POSIX_ACL |
1105 | ||
0cad6246 | 1106 | struct posix_acl *ceph_get_acl(struct inode *, int, bool); |
549c7297 CB |
1107 | int ceph_set_acl(struct user_namespace *mnt_userns, |
1108 | struct inode *inode, struct posix_acl *acl, int type); | |
b1ee94aa | 1109 | int ceph_pre_init_acls(struct inode *dir, umode_t *mode, |
5c31e92d YZ |
1110 | struct ceph_acl_sec_ctx *as_ctx); |
1111 | void ceph_init_inode_acls(struct inode *inode, | |
1112 | struct ceph_acl_sec_ctx *as_ctx); | |
c969d9bf GZ |
1113 | |
1114 | static inline void ceph_forget_all_cached_acls(struct inode *inode) | |
1115 | { | |
1116 | forget_all_cached_acls(inode); | |
1117 | } | |
7221fe4c GZ |
1118 | |
1119 | #else | |
1120 | ||
1121 | #define ceph_get_acl NULL | |
72466d0b | 1122 | #define ceph_set_acl NULL |
7221fe4c | 1123 | |
b1ee94aa | 1124 | static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, |
5c31e92d | 1125 | struct ceph_acl_sec_ctx *as_ctx) |
7221fe4c GZ |
1126 | { |
1127 | return 0; | |
1128 | } | |
b1ee94aa | 1129 | static inline void ceph_init_inode_acls(struct inode *inode, |
5c31e92d | 1130 | struct ceph_acl_sec_ctx *as_ctx) |
b1ee94aa YZ |
1131 | { |
1132 | } | |
7221fe4c GZ |
1133 | static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) |
1134 | { | |
1135 | return 0; | |
1136 | } | |
1137 | ||
1138 | static inline void ceph_forget_all_cached_acls(struct inode *inode) | |
1139 | { | |
1140 | } | |
1141 | ||
1142 | #endif | |
1143 | ||
de57606c SW |
1144 | /* caps.c */ |
1145 | extern const char *ceph_cap_string(int c); | |
1146 | extern void ceph_handle_caps(struct ceph_mds_session *session, | |
1147 | struct ceph_msg *msg); | |
d9df2783 YZ |
1148 | extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, |
1149 | struct ceph_cap_reservation *ctx); | |
1150 | extern void ceph_add_cap(struct inode *inode, | |
1151 | struct ceph_mds_session *session, u64 cap_id, | |
135e671e | 1152 | unsigned issued, unsigned wanted, |
d9df2783 YZ |
1153 | unsigned cap, unsigned seq, u64 realmino, int flags, |
1154 | struct ceph_cap **new_cap); | |
a096b09a | 1155 | extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); |
a76d0a9c | 1156 | extern void ceph_remove_cap(struct ceph_cap *cap, bool queue_release); |
d6e47819 | 1157 | extern void __ceph_remove_caps(struct ceph_inode_info *ci); |
37151668 YS |
1158 | extern void ceph_put_cap(struct ceph_mds_client *mdsc, |
1159 | struct ceph_cap *cap); | |
9215aeea | 1160 | extern int ceph_is_any_caps(struct inode *inode); |
de57606c | 1161 | |
f1a3d572 | 1162 | extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); |
02c24a82 JB |
1163 | extern int ceph_fsync(struct file *file, loff_t start, loff_t end, |
1164 | int datasync); | |
e548e9b9 YZ |
1165 | extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, |
1166 | struct ceph_mds_session *session); | |
de57606c SW |
1167 | extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, |
1168 | struct ceph_mds_session *session); | |
e8a4d267 JL |
1169 | void ceph_kick_flushing_inode_caps(struct ceph_mds_session *session, |
1170 | struct ceph_inode_info *ci); | |
2bc50259 GF |
1171 | extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, |
1172 | int mds); | |
40dcf75e JL |
1173 | extern void ceph_take_cap_refs(struct ceph_inode_info *ci, int caps, |
1174 | bool snap_rwsem_locked); | |
de57606c SW |
1175 | extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); |
1176 | extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); | |
a8810cdc | 1177 | extern void ceph_put_cap_refs_async(struct ceph_inode_info *ci, int had); |
e64f44a8 XL |
1178 | extern void ceph_put_cap_refs_no_check_caps(struct ceph_inode_info *ci, |
1179 | int had); | |
de57606c SW |
1180 | extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, |
1181 | struct ceph_snap_context *snapc); | |
a6d37ccd XL |
1182 | extern void __ceph_remove_capsnap(struct inode *inode, |
1183 | struct ceph_cap_snap *capsnap, | |
1184 | bool *wake_ci, bool *wake_mdsc); | |
1185 | extern void ceph_remove_capsnap(struct inode *inode, | |
1186 | struct ceph_cap_snap *capsnap, | |
1187 | bool *wake_ci, bool *wake_mdsc); | |
ed9b430c YZ |
1188 | extern void ceph_flush_snaps(struct ceph_inode_info *ci, |
1189 | struct ceph_mds_session **psession); | |
efb0ca76 | 1190 | extern bool __ceph_should_report_size(struct ceph_inode_info *ci); |
de57606c SW |
1191 | extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, |
1192 | struct ceph_mds_session *session); | |
bf2ba432 | 1193 | extern unsigned long ceph_check_delayed_caps(struct ceph_mds_client *mdsc); |
afcdaea3 | 1194 | extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); |
6ef0bc6d | 1195 | extern int ceph_drop_caps_for_unlink(struct inode *inode); |
de57606c SW |
1196 | extern int ceph_encode_inode_release(void **p, struct inode *inode, |
1197 | int mds, int drop, int unless, int force); | |
1198 | extern int ceph_encode_dentry_release(void **p, struct dentry *dn, | |
ca6c8ae0 | 1199 | struct inode *dir, |
de57606c SW |
1200 | int mds, int drop, int unless); |
1201 | ||
5e3ded1b | 1202 | extern int ceph_get_caps(struct file *filp, int need, int want, |
e72968e1 | 1203 | loff_t endoff, int *got); |
5e3ded1b | 1204 | extern int ceph_try_get_caps(struct inode *inode, |
2ee9dd95 | 1205 | int need, int want, bool nonblock, int *got); |
de57606c SW |
1206 | |
1207 | /* for counting open files by mode */ | |
719a2514 YZ |
1208 | extern void ceph_get_fmode(struct ceph_inode_info *ci, int mode, int count); |
1209 | extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode, int count); | |
1210 | extern void __ceph_touch_fmode(struct ceph_inode_info *ci, | |
1211 | struct ceph_mds_client *mdsc, int fmode); | |
de57606c SW |
1212 | |
1213 | /* addr.c */ | |
1214 | extern const struct address_space_operations ceph_aops; | |
1215 | extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); | |
10183a69 | 1216 | extern int ceph_uninline_data(struct file *filp, struct page *locked_page); |
5e3ded1b | 1217 | extern int ceph_pool_perm_check(struct inode *inode, int need); |
10183a69 | 1218 | extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); |
36e6da98 | 1219 | int ceph_purge_inode_cap(struct inode *inode, struct ceph_cap *cap, bool *invalidate); |
de57606c SW |
1220 | |
1221 | /* file.c */ | |
1222 | extern const struct file_operations ceph_file_fops; | |
9e0eb85d | 1223 | |
719a2514 | 1224 | extern int ceph_renew_caps(struct inode *inode, int fmode); |
de57606c | 1225 | extern int ceph_open(struct inode *inode, struct file *file); |
5ef50c3b | 1226 | extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, |
44907d79 | 1227 | struct file *file, unsigned flags, umode_t mode); |
de57606c | 1228 | extern int ceph_release(struct inode *inode, struct file *filp); |
31c542a1 YZ |
1229 | extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, |
1230 | char *data, size_t len); | |
55f2a045 | 1231 | |
de57606c SW |
1232 | /* dir.c */ |
1233 | extern const struct file_operations ceph_dir_fops; | |
38c48b5f | 1234 | extern const struct file_operations ceph_snapdir_fops; |
de57606c | 1235 | extern const struct inode_operations ceph_dir_iops; |
38c48b5f | 1236 | extern const struct inode_operations ceph_snapdir_iops; |
18fc8abd | 1237 | extern const struct dentry_operations ceph_dentry_ops; |
de57606c | 1238 | |
f3c4ebe6 | 1239 | extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order); |
de57606c | 1240 | extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); |
aa60cfc3 | 1241 | extern struct dentry *ceph_handle_snapdir(struct ceph_mds_request *req, |
7a971e2c | 1242 | struct dentry *dentry); |
de57606c SW |
1243 | extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, |
1244 | struct dentry *dentry, int err); | |
1245 | ||
37c4efc1 YZ |
1246 | extern void __ceph_dentry_lease_touch(struct ceph_dentry_info *di); |
1247 | extern void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di); | |
81a6cf2d | 1248 | extern void ceph_invalidate_dentry_lease(struct dentry *dentry); |
37c4efc1 | 1249 | extern int ceph_trim_dentries(struct ceph_mds_client *mdsc); |
e5f86dc3 | 1250 | extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); |
fdd4e158 | 1251 | extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl); |
de57606c | 1252 | |
de57606c SW |
1253 | /* ioctl.c */ |
1254 | extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
1255 | ||
1256 | /* export.c */ | |
1257 | extern const struct export_operations ceph_export_ops; | |
3886274a | 1258 | struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino); |
de57606c | 1259 | |
40819f6f | 1260 | /* locks.c */ |
eb13e832 | 1261 | extern __init void ceph_flock_init(void); |
40819f6f GF |
1262 | extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); |
1263 | extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); | |
1264 | extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); | |
39be95e9 JS |
1265 | extern int ceph_encode_locks_to_buffer(struct inode *inode, |
1266 | struct ceph_filelock *flocks, | |
1267 | int num_fcntl_locks, | |
1268 | int num_flock_locks); | |
1269 | extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, | |
1270 | struct ceph_pagelist *pagelist, | |
1271 | int num_fcntl_locks, int num_flock_locks); | |
40819f6f | 1272 | |
3d14c5d2 | 1273 | /* debugfs.c */ |
1a829ff2 | 1274 | extern void ceph_fs_debugfs_init(struct ceph_fs_client *client); |
3d14c5d2 YS |
1275 | extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); |
1276 | ||
fb18a575 | 1277 | /* quota.c */ |
d557c48d LH |
1278 | static inline bool __ceph_has_any_quota(struct ceph_inode_info *ci) |
1279 | { | |
1280 | return ci->i_max_files || ci->i_max_bytes; | |
1281 | } | |
1282 | ||
1283 | extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc); | |
1284 | ||
1285 | static inline void __ceph_update_quota(struct ceph_inode_info *ci, | |
1286 | u64 max_bytes, u64 max_files) | |
1287 | { | |
1288 | bool had_quota, has_quota; | |
1289 | had_quota = __ceph_has_any_quota(ci); | |
1290 | ci->i_max_bytes = max_bytes; | |
1291 | ci->i_max_files = max_files; | |
1292 | has_quota = __ceph_has_any_quota(ci); | |
1293 | ||
1294 | if (had_quota != has_quota) | |
1295 | ceph_adjust_quota_realms_count(&ci->vfs_inode, has_quota); | |
1296 | } | |
1297 | ||
fb18a575 LH |
1298 | extern void ceph_handle_quota(struct ceph_mds_client *mdsc, |
1299 | struct ceph_mds_session *session, | |
1300 | struct ceph_msg *msg); | |
b7a29217 | 1301 | extern bool ceph_quota_is_max_files_exceeded(struct inode *inode); |
6646ea1c | 1302 | extern bool ceph_quota_is_same_realm(struct inode *old, struct inode *new); |
2b83845f LH |
1303 | extern bool ceph_quota_is_max_bytes_exceeded(struct inode *inode, |
1304 | loff_t newlen); | |
1ab302a0 LH |
1305 | extern bool ceph_quota_is_max_bytes_approaching(struct inode *inode, |
1306 | loff_t newlen); | |
9122eed5 LH |
1307 | extern bool ceph_quota_update_statfs(struct ceph_fs_client *fsc, |
1308 | struct kstatfs *buf); | |
0c44a8e0 | 1309 | extern void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc); |
fb18a575 | 1310 | |
de57606c | 1311 | #endif /* _FS_CEPH_SUPER_H */ |