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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> |
bc899ee1 DH |
20 | #include <linux/netfs.h> |
21 | #include <linux/fscache.h> | |
4868e537 | 22 | #include <linux/hashtable.h> |
de57606c | 23 | |
3d14c5d2 | 24 | #include <linux/ceph/libceph.h> |
de57606c | 25 | |
de57606c SW |
26 | /* large granularity for statfs utilization stats to facilitate |
27 | * large volume sizes on 32-bit machines. */ | |
92a49fb0 | 28 | #define CEPH_BLOCK_SHIFT 22 /* 4 MB */ |
de57606c | 29 | #define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) |
8e55ba8c | 30 | #define CEPH_4K_BLOCK_SHIFT 12 /* 4 KB */ |
de57606c | 31 | |
0b98acd6 | 32 | #define CEPH_MOUNT_OPT_CLEANRECOVER (1<<1) /* auto reonnect (clean mode) after blocklisted */ |
3d14c5d2 YS |
33 | #define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ |
34 | #define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ | |
35 | #define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ | |
ad1fee96 | 36 | #define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ |
a40dc6cc | 37 | #define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ |
99ccbd22 | 38 | #define CEPH_MOUNT_OPT_FSCACHE (1<<10) /* use fscache */ |
10183a69 | 39 | #define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11) /* no pool permission check */ |
e9e427f0 | 40 | #define CEPH_MOUNT_OPT_MOUNTWAIT (1<<12) /* mount waits if no mds is up */ |
9122eed5 | 41 | #define CEPH_MOUNT_OPT_NOQUOTADF (1<<13) /* no root dir quota in statfs */ |
ea4cdc54 | 42 | #define CEPH_MOUNT_OPT_NOCOPYFROM (1<<14) /* don't use RADOS 'copy-from' op */ |
2ccb4546 | 43 | #define CEPH_MOUNT_OPT_ASYNC_DIROPS (1<<15) /* allow async directory ops */ |
94cc0877 | 44 | #define CEPH_MOUNT_OPT_NOPAGECACHE (1<<16) /* bypass pagecache altogether */ |
6a259382 | 45 | |
6f9718fe LH |
46 | #define CEPH_MOUNT_OPT_DEFAULT \ |
47 | (CEPH_MOUNT_OPT_DCACHE | \ | |
f7a67b46 JL |
48 | CEPH_MOUNT_OPT_NOCOPYFROM | \ |
49 | CEPH_MOUNT_OPT_ASYNC_DIROPS) | |
de57606c | 50 | |
3d14c5d2 | 51 | #define ceph_set_mount_opt(fsc, opt) \ |
2ccb4546 JL |
52 | (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt |
53 | #define ceph_clear_mount_opt(fsc, opt) \ | |
54 | (fsc)->mount_options->flags &= ~CEPH_MOUNT_OPT_##opt | |
3d14c5d2 YS |
55 | #define ceph_test_mount_opt(fsc, opt) \ |
56 | (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) | |
de57606c | 57 | |
aa187926 YZ |
58 | /* max size of osd read request, limited by libceph */ |
59 | #define CEPH_MAX_READ_SIZE CEPH_MSG_MAX_DATA_LEN | |
95cca2b4 YZ |
60 | /* osd has a configurable limitaion of max write size. |
61 | * CEPH_MSG_MAX_DATA_LEN should be small enough. */ | |
62 | #define CEPH_MAX_WRITE_SIZE CEPH_MSG_MAX_DATA_LEN | |
7c94ba27 | 63 | #define CEPH_RASIZE_DEFAULT (8192*1024) /* max readahead */ |
3d14c5d2 YS |
64 | #define CEPH_MAX_READDIR_DEFAULT 1024 |
65 | #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) | |
66 | #define CEPH_SNAPDIRNAME_DEFAULT ".snap" | |
de57606c | 67 | |
4214fb15 YZ |
68 | /* |
69 | * Delay telling the MDS we no longer want caps, in case we reopen | |
70 | * the file. Delay a minimum amount of time, even if we send a cap | |
71 | * message for some other reason. Otherwise, take the oppotunity to | |
72 | * update the mds to avoid sending another message later. | |
73 | */ | |
74 | #define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */ | |
75 | #define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */ | |
76 | ||
3d14c5d2 | 77 | struct ceph_mount_options { |
ad8c28a9 | 78 | unsigned int flags; |
3d14c5d2 | 79 | |
ad8c28a9 JL |
80 | unsigned int wsize; /* max write size */ |
81 | unsigned int rsize; /* max read size */ | |
82 | unsigned int rasize; /* max readahead */ | |
83 | unsigned int congestion_kb; /* max writeback in flight */ | |
84 | unsigned int caps_wanted_delay_min, caps_wanted_delay_max; | |
fe33032d | 85 | int caps_max; |
ad8c28a9 JL |
86 | unsigned int max_readdir; /* max readdir result (entries) */ |
87 | unsigned int max_readdir_bytes; /* max readdir result (bytes) */ | |
de57606c | 88 | |
7b19b4db VS |
89 | bool new_dev_syntax; |
90 | ||
3d14c5d2 YS |
91 | /* |
92 | * everything above this point can be memcmp'd; everything below | |
93 | * is handled in compare_mount_options() | |
94 | */ | |
de57606c | 95 | |
3d14c5d2 | 96 | char *snapdir_name; /* default ".snap" */ |
430afbad | 97 | char *mds_namespace; /* default NULL */ |
b27a939e | 98 | char *server_path; /* default NULL (means "/") */ |
1d8f8360 | 99 | char *fscache_uniq; /* default NULL */ |
7b19b4db | 100 | char *mon_addr; |
3d14c5d2 | 101 | }; |
de57606c | 102 | |
b38b17b6 XL |
103 | /* mount state */ |
104 | enum { | |
105 | CEPH_MOUNT_MOUNTING, | |
106 | CEPH_MOUNT_MOUNTED, | |
107 | CEPH_MOUNT_UNMOUNTING, | |
108 | CEPH_MOUNT_UNMOUNTED, | |
109 | CEPH_MOUNT_SHUTDOWN, | |
110 | CEPH_MOUNT_RECOVER, | |
a68e564a | 111 | CEPH_MOUNT_FENCE_IO, |
b38b17b6 XL |
112 | }; |
113 | ||
4868e537 XL |
114 | #define CEPH_ASYNC_CREATE_CONFLICT_BITS 8 |
115 | ||
3d14c5d2 | 116 | struct ceph_fs_client { |
de57606c SW |
117 | struct super_block *sb; |
118 | ||
18f473b3 XL |
119 | struct list_head metric_wakeup; |
120 | ||
3d14c5d2 YS |
121 | struct ceph_mount_options *mount_options; |
122 | struct ceph_client *client; | |
de57606c | 123 | |
aa5c7910 | 124 | int mount_state; |
81f148a9 | 125 | |
0b98acd6 | 126 | bool blocklisted; |
131d7eb4 | 127 | |
78beb0ff LH |
128 | bool have_copy_from2; |
129 | ||
81f148a9 | 130 | u32 filp_gen; |
719784ba | 131 | loff_t max_file_size; |
85ccce43 | 132 | |
3d14c5d2 | 133 | struct ceph_mds_client *mdsc; |
de57606c | 134 | |
e3ec8d68 | 135 | atomic_long_t writeback_count; |
503d4fa6 | 136 | bool write_congested; |
e3ec8d68 | 137 | |
1cf89a8d | 138 | struct workqueue_struct *inode_wq; |
e3ec8d68 | 139 | struct workqueue_struct *cap_wq; |
de57606c | 140 | |
4868e537 XL |
141 | DECLARE_HASHTABLE(async_unlink_conflict, CEPH_ASYNC_CREATE_CONFLICT_BITS); |
142 | spinlock_t async_unlink_conflict_lock; | |
143 | ||
0743304d | 144 | #ifdef CONFIG_DEBUG_FS |
3d14c5d2 | 145 | struct dentry *debugfs_dentry_lru, *debugfs_caps; |
2baba250 | 146 | struct dentry *debugfs_congestion_kb; |
06edf046 | 147 | struct dentry *debugfs_bdi; |
3d14c5d2 | 148 | struct dentry *debugfs_mdsc, *debugfs_mdsmap; |
247b1f19 | 149 | struct dentry *debugfs_status; |
14ed9703 | 150 | struct dentry *debugfs_mds_sessions; |
cbed4ff7 | 151 | struct dentry *debugfs_metrics_dir; |
0743304d | 152 | #endif |
99ccbd22 MT |
153 | |
154 | #ifdef CONFIG_CEPH_FSCACHE | |
400e1286 | 155 | struct fscache_volume *fscache; |
99ccbd22 | 156 | #endif |
de57606c SW |
157 | }; |
158 | ||
3d14c5d2 | 159 | |
de57606c SW |
160 | /* |
161 | * File i/o capability. This tracks shared state with the metadata | |
162 | * server that allows us to cache or writeback attributes or to read | |
163 | * and write data. For any given inode, we should have one or more | |
164 | * capabilities, one issued by each metadata server, and our | |
165 | * cumulative access is the OR of all issued capabilities. | |
166 | * | |
167 | * Each cap is referenced by the inode's i_caps rbtree and by per-mds | |
168 | * session capability lists. | |
169 | */ | |
170 | struct ceph_cap { | |
171 | struct ceph_inode_info *ci; | |
172 | struct rb_node ci_node; /* per-ci cap tree */ | |
173 | struct ceph_mds_session *session; | |
174 | struct list_head session_caps; /* per-session caplist */ | |
de57606c | 175 | u64 cap_id; /* unique cap id (mds provided) */ |
745a8e3b YZ |
176 | union { |
177 | /* in-use caps */ | |
178 | struct { | |
179 | int issued; /* latest, from the mds */ | |
180 | int implemented; /* implemented superset of | |
181 | issued (for revocation) */ | |
c74d79af JL |
182 | int mds; /* mds index for this cap */ |
183 | int mds_wanted; /* caps wanted from this mds */ | |
745a8e3b YZ |
184 | }; |
185 | /* caps to release */ | |
186 | struct { | |
187 | u64 cap_ino; | |
188 | int queue_release; | |
189 | }; | |
190 | }; | |
685f9a5d SW |
191 | u32 seq, issue_seq, mseq; |
192 | u32 cap_gen; /* active/stale cycle */ | |
de57606c SW |
193 | unsigned long last_used; |
194 | struct list_head caps_item; | |
195 | }; | |
196 | ||
a0d93e32 YZ |
197 | #define CHECK_CAPS_AUTHONLY 1 /* only check auth cap */ |
198 | #define CHECK_CAPS_FLUSH 2 /* flush any dirty caps */ | |
199 | #define CHECK_CAPS_NOINVAL 4 /* don't invalidate pagecache */ | |
de57606c | 200 | |
0e294387 YZ |
201 | struct ceph_cap_flush { |
202 | u64 tid; | |
b2f9fa1f | 203 | int caps; |
c8799fc4 | 204 | bool wake; /* wake up flush waiters when finish ? */ |
b2f9fa1f | 205 | bool is_capsnap; /* true means capsnap */ |
0e294387 YZ |
206 | struct list_head g_list; // global |
207 | struct list_head i_list; // per inode | |
208 | }; | |
209 | ||
de57606c SW |
210 | /* |
211 | * Snapped cap state that is pending flush to mds. When a snapshot occurs, | |
212 | * we first complete any in-process sync writes and writeback any dirty | |
213 | * data before flushing the snapped state (tracked here) back to the MDS. | |
214 | */ | |
215 | struct ceph_cap_snap { | |
805692d0 | 216 | refcount_t nref; |
0e294387 | 217 | struct list_head ci_item; |
de57606c | 218 | |
0e294387 YZ |
219 | struct ceph_cap_flush cap_flush; |
220 | ||
221 | u64 follows; | |
de57606c SW |
222 | int issued, dirty; |
223 | struct ceph_snap_context *context; | |
224 | ||
5706b27d | 225 | umode_t mode; |
05cb11c1 EB |
226 | kuid_t uid; |
227 | kgid_t gid; | |
de57606c | 228 | |
4a625be4 | 229 | struct ceph_buffer *xattr_blob; |
de57606c SW |
230 | u64 xattr_version; |
231 | ||
232 | u64 size; | |
176c77c9 | 233 | u64 change_attr; |
ec62b894 | 234 | struct timespec64 mtime, atime, ctime, btime; |
de57606c | 235 | u64 time_warp_seq; |
5f743e45 YZ |
236 | u64 truncate_size; |
237 | u32 truncate_seq; | |
de57606c SW |
238 | int writing; /* a sync write is still in progress */ |
239 | int dirty_pages; /* dirty pages awaiting writeback */ | |
e20d258d | 240 | bool inline_data; |
86056090 | 241 | bool need_flush; |
de57606c SW |
242 | }; |
243 | ||
244 | static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) | |
245 | { | |
805692d0 | 246 | if (refcount_dec_and_test(&capsnap->nref)) { |
4a625be4 SW |
247 | if (capsnap->xattr_blob) |
248 | ceph_buffer_put(capsnap->xattr_blob); | |
ab58a5a1 | 249 | kmem_cache_free(ceph_cap_snap_cachep, capsnap); |
4a625be4 | 250 | } |
de57606c SW |
251 | } |
252 | ||
253 | /* | |
254 | * The frag tree describes how a directory is fragmented, potentially across | |
255 | * multiple metadata servers. It is also used to indicate points where | |
256 | * metadata authority is delegated, and whether/where metadata is replicated. | |
257 | * | |
258 | * A _leaf_ frag will be present in the i_fragtree IFF there is | |
259 | * delegation info. That is, if mds >= 0 || ndist > 0. | |
260 | */ | |
261 | #define CEPH_MAX_DIRFRAG_REP 4 | |
262 | ||
263 | struct ceph_inode_frag { | |
264 | struct rb_node node; | |
265 | ||
266 | /* fragtree state */ | |
267 | u32 frag; | |
268 | int split_by; /* i.e. 2^(split_by) children */ | |
269 | ||
270 | /* delegation and replication info */ | |
271 | int mds; /* -1 if same authority as parent */ | |
272 | int ndist; /* >0 if replicated */ | |
273 | int dist[CEPH_MAX_DIRFRAG_REP]; | |
274 | }; | |
275 | ||
276 | /* | |
277 | * We cache inode xattrs as an encoded blob until they are first used, | |
278 | * at which point we parse them into an rbtree. | |
279 | */ | |
280 | struct ceph_inode_xattr { | |
281 | struct rb_node node; | |
282 | ||
283 | const char *name; | |
284 | int name_len; | |
285 | const char *val; | |
286 | int val_len; | |
287 | int dirty; | |
288 | ||
289 | int should_free_name; | |
290 | int should_free_val; | |
291 | }; | |
292 | ||
3d14c5d2 YS |
293 | /* |
294 | * Ceph dentry state | |
295 | */ | |
296 | struct ceph_dentry_info { | |
37c4efc1 | 297 | struct dentry *dentry; |
3d14c5d2 | 298 | struct ceph_mds_session *lease_session; |
37c4efc1 | 299 | struct list_head lease_list; |
4868e537 XL |
300 | struct hlist_node hnode; |
301 | unsigned long flags; | |
97aeb6bf YZ |
302 | int lease_shared_gen; |
303 | u32 lease_gen; | |
3d14c5d2 YS |
304 | u32 lease_seq; |
305 | unsigned long lease_renew_after, lease_renew_from; | |
9b16f03c | 306 | unsigned long time; |
3d14c5d2 YS |
307 | u64 offset; |
308 | }; | |
309 | ||
4868e537 XL |
310 | #define CEPH_DENTRY_REFERENCED (1 << 0) |
311 | #define CEPH_DENTRY_LEASE_LIST (1 << 1) | |
312 | #define CEPH_DENTRY_SHRINK_LIST (1 << 2) | |
313 | #define CEPH_DENTRY_PRIMARY_LINK (1 << 3) | |
314 | #define CEPH_DENTRY_ASYNC_UNLINK_BIT (4) | |
315 | #define CEPH_DENTRY_ASYNC_UNLINK (1 << CEPH_DENTRY_ASYNC_UNLINK_BIT) | |
00061645 XL |
316 | #define CEPH_DENTRY_ASYNC_CREATE_BIT (5) |
317 | #define CEPH_DENTRY_ASYNC_CREATE (1 << CEPH_DENTRY_ASYNC_CREATE_BIT) | |
37c4efc1 | 318 | |
de57606c SW |
319 | struct ceph_inode_xattrs_info { |
320 | /* | |
321 | * (still encoded) xattr blob. we avoid the overhead of parsing | |
322 | * this until someone actually calls getxattr, etc. | |
323 | * | |
324 | * blob->vec.iov_len == 4 implies there are no xattrs; blob == | |
325 | * NULL means we don't know. | |
326 | */ | |
327 | struct ceph_buffer *blob, *prealloc_blob; | |
328 | ||
329 | struct rb_root index; | |
330 | bool dirty; | |
331 | int count; | |
332 | int names_size; | |
333 | int vals_size; | |
334 | u64 version, index_version; | |
335 | }; | |
336 | ||
337 | /* | |
338 | * Ceph inode. | |
339 | */ | |
de57606c | 340 | struct ceph_inode_info { |
874c8ca1 | 341 | struct netfs_inode netfs; /* Netfslib context and vfs inode */ |
de57606c SW |
342 | struct ceph_vino i_vino; /* ceph ino + snap */ |
343 | ||
be655596 SW |
344 | spinlock_t i_ceph_lock; |
345 | ||
de57606c | 346 | u64 i_version; |
31c542a1 | 347 | u64 i_inline_version; |
de57606c SW |
348 | u32 i_time_warp_seq; |
349 | ||
891f3f5a | 350 | unsigned long i_ceph_flags; |
fdd4e158 YZ |
351 | atomic64_t i_release_count; |
352 | atomic64_t i_ordered_count; | |
353 | atomic64_t i_complete_seq[2]; | |
de57606c | 354 | |
6c0f3af7 | 355 | struct ceph_dir_layout i_dir_layout; |
de57606c | 356 | struct ceph_file_layout i_layout; |
785892fe | 357 | struct ceph_file_layout i_cached_layout; // for async creates |
de57606c SW |
358 | char *i_symlink; |
359 | ||
360 | /* for dirs */ | |
9bbeab41 | 361 | struct timespec64 i_rctime; |
e7f72952 | 362 | u64 i_rbytes, i_rfiles, i_rsubdirs, i_rsnaps; |
de57606c | 363 | u64 i_files, i_subdirs; |
de57606c | 364 | |
fb18a575 LH |
365 | /* quotas */ |
366 | u64 i_max_bytes, i_max_files; | |
367 | ||
08796873 YZ |
368 | s32 i_dir_pin; |
369 | ||
de57606c | 370 | struct rb_root i_fragtree; |
1b1bc16d | 371 | int i_fragtree_nsplits; |
de57606c SW |
372 | struct mutex i_fragtree_mutex; |
373 | ||
374 | struct ceph_inode_xattrs_info i_xattrs; | |
375 | ||
be655596 | 376 | /* capabilities. protected _both_ by i_ceph_lock and cap->session's |
de57606c SW |
377 | * s_mutex. */ |
378 | struct rb_root i_caps; /* cap list */ | |
379 | struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ | |
380 | unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ | |
1cf03a68 JL |
381 | |
382 | /* | |
f1f565a2 | 383 | * Link to the auth cap's session's s_cap_dirty list. s_cap_dirty |
1cf03a68 JL |
384 | * is protected by the mdsc->cap_dirty_lock, but each individual item |
385 | * is also protected by the inode's i_ceph_lock. Walking s_cap_dirty | |
386 | * requires the mdsc->cap_dirty_lock. List presence for an item can | |
387 | * be tested under the i_ceph_lock. Changing anything requires both. | |
388 | */ | |
389 | struct list_head i_dirty_item; | |
390 | ||
391 | /* | |
829ad4db JL |
392 | * Link to session's s_cap_flushing list. Protected in a similar |
393 | * fashion to i_dirty_item, but also by the s_mutex for changes. The | |
394 | * s_cap_flushing list can be walked while holding either the s_mutex | |
395 | * or msdc->cap_dirty_lock. List presence can also be checked while | |
396 | * holding the i_ceph_lock for this inode. | |
1cf03a68 JL |
397 | */ |
398 | struct list_head i_flushing_item; | |
399 | ||
de57606c SW |
400 | /* we need to track cap writeback on a per-cap-bit basis, to allow |
401 | * overlapping, pipelined cap flushes to the mds. we can probably | |
402 | * reduce the tid to 8 bits if we're concerned about inode size. */ | |
f66fd9f0 | 403 | struct ceph_cap_flush *i_prealloc_cap_flush; |
e4500b5e | 404 | struct list_head i_cap_flush_list; |
de57606c | 405 | wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ |
de57606c SW |
406 | unsigned long i_hold_caps_max; /* jiffies */ |
407 | struct list_head i_cap_delay_list; /* for delayed cap release to mds */ | |
de57606c SW |
408 | struct ceph_cap_reservation i_cap_migration_resv; |
409 | struct list_head i_cap_snaps; /* snapped state pending flush to mds */ | |
7d8cb26d SW |
410 | struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or |
411 | dirty|flushing caps */ | |
de57606c SW |
412 | unsigned i_snap_caps; /* cap bits for snapped files */ |
413 | ||
719a2514 YZ |
414 | unsigned long i_last_rd; |
415 | unsigned long i_last_wr; | |
774a6a11 | 416 | int i_nr_by_mode[CEPH_FILE_MODE_BITS]; /* open file counts */ |
de57606c | 417 | |
b0d7c223 | 418 | struct mutex i_truncate_mutex; |
de57606c SW |
419 | u32 i_truncate_seq; /* last truncate to smaller size */ |
420 | u64 i_truncate_size; /* and the size we last truncated down to */ | |
421 | int i_truncate_pending; /* still need to call vmtruncate */ | |
422 | ||
423 | u64 i_max_size; /* max file size authorized by mds */ | |
424 | u64 i_reported_size; /* (max_)size reported to or requested of mds */ | |
425 | u64 i_wanted_max_size; /* offset we'd like to write too */ | |
426 | u64 i_requested_max_size; /* max_size we've requested */ | |
427 | ||
428 | /* held references to caps */ | |
429 | int i_pin_ref; | |
f85122af | 430 | int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref, i_fx_ref; |
de57606c | 431 | int i_wrbuffer_ref, i_wrbuffer_ref_head; |
89aa5930 | 432 | atomic_t i_filelock_ref; |
97aeb6bf | 433 | atomic_t i_shared_gen; /* increment each time we get FILE_SHARED */ |
cd045cb4 | 434 | u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ |
de57606c SW |
435 | u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ |
436 | ||
de57606c | 437 | struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ |
68cd5b4b | 438 | struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ |
de57606c SW |
439 | spinlock_t i_unsafe_lock; |
440 | ||
75c9627e YZ |
441 | union { |
442 | struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ | |
443 | struct ceph_snapid_map *i_snapid_map; /* snapid -> dev_t */ | |
444 | }; | |
de57606c SW |
445 | struct list_head i_snap_realm_item; |
446 | struct list_head i_snap_flush_item; | |
245ce991 | 447 | struct timespec64 i_btime; |
193e7b37 | 448 | struct timespec64 i_snap_btime; |
de57606c | 449 | |
1cf89a8d YZ |
450 | struct work_struct i_work; |
451 | unsigned long i_work_mask; | |
de57606c SW |
452 | }; |
453 | ||
721d5c13 JL |
454 | static inline struct ceph_inode_info * |
455 | ceph_inode(const struct inode *inode) | |
de57606c | 456 | { |
874c8ca1 | 457 | return container_of(inode, struct ceph_inode_info, netfs.inode); |
de57606c SW |
458 | } |
459 | ||
721d5c13 JL |
460 | static inline struct ceph_fs_client * |
461 | ceph_inode_to_client(const struct inode *inode) | |
ad1fee96 YS |
462 | { |
463 | return (struct ceph_fs_client *)inode->i_sb->s_fs_info; | |
464 | } | |
465 | ||
721d5c13 JL |
466 | static inline struct ceph_fs_client * |
467 | ceph_sb_to_client(const struct super_block *sb) | |
ad1fee96 YS |
468 | { |
469 | return (struct ceph_fs_client *)sb->s_fs_info; | |
470 | } | |
471 | ||
2678da88 XL |
472 | static inline struct ceph_mds_client * |
473 | ceph_sb_to_mdsc(const struct super_block *sb) | |
474 | { | |
475 | return (struct ceph_mds_client *)ceph_sb_to_client(sb)->mdsc; | |
476 | } | |
477 | ||
721d5c13 JL |
478 | static inline struct ceph_vino |
479 | ceph_vino(const struct inode *inode) | |
3d14c5d2 YS |
480 | { |
481 | return ceph_inode(inode)->i_vino; | |
482 | } | |
483 | ||
ebce3eb2 | 484 | static inline u32 ceph_ino_to_ino32(u64 vino) |
ad1fee96 | 485 | { |
3310f754 AO |
486 | u32 ino = vino & 0xffffffff; |
487 | ino ^= vino >> 32; | |
ad1fee96 | 488 | if (!ino) |
a661fc56 | 489 | ino = 2; |
ad1fee96 YS |
490 | return ino; |
491 | } | |
492 | ||
493 | /* | |
ebce3eb2 JL |
494 | * Inode numbers in cephfs are 64 bits, but inode->i_ino is 32-bits on |
495 | * some arches. We generally do not use this value inside the ceph driver, but | |
496 | * we do want to set it to something, so that generic vfs code has an | |
497 | * appropriate value for tracepoints and the like. | |
3d14c5d2 | 498 | */ |
ebce3eb2 | 499 | static inline ino_t ceph_vino_to_ino_t(struct ceph_vino vino) |
3d14c5d2 | 500 | { |
ebce3eb2 JL |
501 | if (sizeof(ino_t) == sizeof(u32)) |
502 | return ceph_ino_to_ino32(vino.ino); | |
3310f754 | 503 | return (ino_t)vino.ino; |
ad1fee96 | 504 | } |
ad1fee96 | 505 | |
3d14c5d2 YS |
506 | /* for printf-style formatting */ |
507 | #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap | |
508 | ||
509 | static inline u64 ceph_ino(struct inode *inode) | |
510 | { | |
511 | return ceph_inode(inode)->i_vino.ino; | |
512 | } | |
ebce3eb2 | 513 | |
3d14c5d2 YS |
514 | static inline u64 ceph_snap(struct inode *inode) |
515 | { | |
516 | return ceph_inode(inode)->i_vino.snap; | |
517 | } | |
518 | ||
ebce3eb2 JL |
519 | /** |
520 | * ceph_present_ino - format an inode number for presentation to userland | |
521 | * @sb: superblock where the inode lives | |
522 | * @ino: inode number to (possibly) convert | |
523 | * | |
524 | * If the user mounted with the ino32 option, then the 64-bit value needs | |
525 | * to be converted to something that can fit inside 32 bits. Note that | |
526 | * internal kernel code never uses this value, so this is entirely for | |
527 | * userland consumption. | |
528 | */ | |
529 | static inline u64 ceph_present_ino(struct super_block *sb, u64 ino) | |
530 | { | |
531 | if (unlikely(ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))) | |
532 | return ceph_ino_to_ino32(ino); | |
533 | return ino; | |
534 | } | |
535 | ||
536 | static inline u64 ceph_present_inode(struct inode *inode) | |
537 | { | |
538 | return ceph_present_ino(inode->i_sb, ceph_ino(inode)); | |
539 | } | |
540 | ||
3d14c5d2 YS |
541 | static inline int ceph_ino_compare(struct inode *inode, void *data) |
542 | { | |
543 | struct ceph_vino *pvino = (struct ceph_vino *)data; | |
544 | struct ceph_inode_info *ci = ceph_inode(inode); | |
545 | return ci->i_vino.ino == pvino->ino && | |
546 | ci->i_vino.snap == pvino->snap; | |
547 | } | |
548 | ||
d4f6b31d JL |
549 | /* |
550 | * The MDS reserves a set of inodes for its own usage. These should never | |
551 | * be accessible by clients, and so the MDS has no reason to ever hand these | |
552 | * out. The range is CEPH_MDS_INO_MDSDIR_OFFSET..CEPH_INO_SYSTEM_BASE. | |
553 | * | |
554 | * These come from src/mds/mdstypes.h in the ceph sources. | |
555 | */ | |
0078ea3b JL |
556 | #define CEPH_MAX_MDS 0x100 |
557 | #define CEPH_NUM_STRAY 10 | |
d4f6b31d | 558 | #define CEPH_MDS_INO_MDSDIR_OFFSET (1 * CEPH_MAX_MDS) |
0078ea3b | 559 | #define CEPH_MDS_INO_LOG_OFFSET (2 * CEPH_MAX_MDS) |
d4f6b31d JL |
560 | #define CEPH_INO_SYSTEM_BASE ((6*CEPH_MAX_MDS) + (CEPH_MAX_MDS * CEPH_NUM_STRAY)) |
561 | ||
562 | static inline bool ceph_vino_is_reserved(const struct ceph_vino vino) | |
563 | { | |
0078ea3b JL |
564 | if (vino.ino >= CEPH_INO_SYSTEM_BASE || |
565 | vino.ino < CEPH_MDS_INO_MDSDIR_OFFSET) | |
566 | return false; | |
567 | ||
568 | /* Don't warn on mdsdirs */ | |
569 | WARN_RATELIMIT(vino.ino >= CEPH_MDS_INO_LOG_OFFSET, | |
570 | "Attempt to access reserved inode number 0x%llx", | |
571 | vino.ino); | |
572 | return true; | |
d4f6b31d | 573 | } |
ebce3eb2 | 574 | |
3d14c5d2 YS |
575 | static inline struct inode *ceph_find_inode(struct super_block *sb, |
576 | struct ceph_vino vino) | |
577 | { | |
d4f6b31d JL |
578 | if (ceph_vino_is_reserved(vino)) |
579 | return NULL; | |
580 | ||
ebce3eb2 JL |
581 | /* |
582 | * NB: The hashval will be run through the fs/inode.c hash function | |
583 | * anyway, so there is no need to squash the inode number down to | |
584 | * 32-bits first. Just use low-order bits on arches with 32-bit long. | |
585 | */ | |
586 | return ilookup5(sb, (unsigned long)vino.ino, ceph_ino_compare, &vino); | |
3d14c5d2 YS |
587 | } |
588 | ||
589 | ||
590 | /* | |
591 | * Ceph inode. | |
592 | */ | |
10183a69 | 593 | #define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ |
10183a69 | 594 | #define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ |
daca8bda JL |
595 | #define CEPH_I_POOL_PERM (1 << 3) /* pool rd/wr bits are valid */ |
596 | #define CEPH_I_POOL_RD (1 << 4) /* can read from pool */ | |
597 | #define CEPH_I_POOL_WR (1 << 5) /* can write to pool */ | |
598 | #define CEPH_I_SEC_INITED (1 << 6) /* security initialized */ | |
c0e385b1 YZ |
599 | #define CEPH_I_KICK_FLUSH (1 << 7) /* kick flushing caps */ |
600 | #define CEPH_I_FLUSH_SNAPS (1 << 8) /* need flush snapss */ | |
601 | #define CEPH_I_ERROR_WRITE (1 << 9) /* have seen write errors */ | |
602 | #define CEPH_I_ERROR_FILELOCK (1 << 10) /* have seen file lock errors */ | |
603 | #define CEPH_I_ODIRECT (1 << 11) /* inode in direct I/O mode */ | |
604 | #define CEPH_ASYNC_CREATE_BIT (12) /* async create in flight for this */ | |
891f3f5a | 605 | #define CEPH_I_ASYNC_CREATE (1 << CEPH_ASYNC_CREATE_BIT) |
5d6451b1 | 606 | #define CEPH_I_SHUTDOWN (1 << 13) /* inode is no longer usable */ |
68c62bee XL |
607 | #define CEPH_I_ASYNC_CHECK_CAPS (1 << 14) /* check caps immediately after async |
608 | creating finishes */ | |
26544c62 | 609 | |
1cf89a8d YZ |
610 | /* |
611 | * Masks of ceph inode work. | |
612 | */ | |
a8810cdc JL |
613 | #define CEPH_I_WORK_WRITEBACK 0 |
614 | #define CEPH_I_WORK_INVALIDATE_PAGES 1 | |
615 | #define CEPH_I_WORK_VMTRUNCATE 2 | |
616 | #define CEPH_I_WORK_CHECK_CAPS 3 | |
617 | #define CEPH_I_WORK_FLUSH_SNAPS 4 | |
1cf89a8d | 618 | |
26544c62 JL |
619 | /* |
620 | * We set the ERROR_WRITE bit when we start seeing write errors on an inode | |
621 | * and then clear it when they start succeeding. Note that we do a lockless | |
622 | * check first, and only take the lock if it looks like it needs to be changed. | |
623 | * The write submission code just takes this as a hint, so we're not too | |
624 | * worried if a few slip through in either direction. | |
625 | */ | |
626 | static inline void ceph_set_error_write(struct ceph_inode_info *ci) | |
627 | { | |
628 | if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE)) { | |
629 | spin_lock(&ci->i_ceph_lock); | |
630 | ci->i_ceph_flags |= CEPH_I_ERROR_WRITE; | |
631 | spin_unlock(&ci->i_ceph_lock); | |
632 | } | |
633 | } | |
634 | ||
635 | static inline void ceph_clear_error_write(struct ceph_inode_info *ci) | |
636 | { | |
637 | if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE) { | |
638 | spin_lock(&ci->i_ceph_lock); | |
639 | ci->i_ceph_flags &= ~CEPH_I_ERROR_WRITE; | |
640 | spin_unlock(&ci->i_ceph_lock); | |
641 | } | |
642 | } | |
3d14c5d2 | 643 | |
2f276c51 | 644 | static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, |
fdd4e158 YZ |
645 | long long release_count, |
646 | long long ordered_count) | |
de57606c | 647 | { |
74960773 AP |
648 | /* |
649 | * Makes sure operations that setup readdir cache (update page | |
650 | * cache and i_size) are strongly ordered w.r.t. the following | |
651 | * atomic64_set() operations. | |
652 | */ | |
653 | smp_mb(); | |
fdd4e158 YZ |
654 | atomic64_set(&ci->i_complete_seq[0], release_count); |
655 | atomic64_set(&ci->i_complete_seq[1], ordered_count); | |
de57606c SW |
656 | } |
657 | ||
2f276c51 | 658 | static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) |
de57606c | 659 | { |
fdd4e158 YZ |
660 | atomic64_inc(&ci->i_release_count); |
661 | } | |
662 | ||
663 | static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) | |
664 | { | |
665 | atomic64_inc(&ci->i_ordered_count); | |
2f276c51 | 666 | } |
de57606c | 667 | |
2f276c51 YZ |
668 | static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) |
669 | { | |
fdd4e158 YZ |
670 | return atomic64_read(&ci->i_complete_seq[0]) == |
671 | atomic64_read(&ci->i_release_count); | |
de57606c SW |
672 | } |
673 | ||
70db4f36 YZ |
674 | static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) |
675 | { | |
fdd4e158 YZ |
676 | return atomic64_read(&ci->i_complete_seq[0]) == |
677 | atomic64_read(&ci->i_release_count) && | |
678 | atomic64_read(&ci->i_complete_seq[1]) == | |
679 | atomic64_read(&ci->i_ordered_count); | |
70db4f36 YZ |
680 | } |
681 | ||
2f276c51 | 682 | static inline void ceph_dir_clear_complete(struct inode *inode) |
de57606c | 683 | { |
2f276c51 YZ |
684 | __ceph_dir_clear_complete(ceph_inode(inode)); |
685 | } | |
de57606c | 686 | |
70db4f36 | 687 | static inline void ceph_dir_clear_ordered(struct inode *inode) |
2f276c51 | 688 | { |
fdd4e158 | 689 | __ceph_dir_clear_ordered(ceph_inode(inode)); |
de57606c SW |
690 | } |
691 | ||
70db4f36 YZ |
692 | static inline bool ceph_dir_is_complete_ordered(struct inode *inode) |
693 | { | |
fdd4e158 YZ |
694 | bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode)); |
695 | smp_rmb(); | |
70db4f36 YZ |
696 | return ret; |
697 | } | |
de57606c SW |
698 | |
699 | /* find a specific frag @f */ | |
700 | extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, | |
701 | u32 f); | |
702 | ||
703 | /* | |
704 | * choose fragment for value @v. copy frag content to pfrag, if leaf | |
705 | * exists | |
706 | */ | |
707 | extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, | |
708 | struct ceph_inode_frag *pfrag, | |
709 | int *found); | |
710 | ||
1e9c2eb6 | 711 | static inline struct ceph_dentry_info *ceph_dentry(const struct dentry *dentry) |
de57606c SW |
712 | { |
713 | return (struct ceph_dentry_info *)dentry->d_fsdata; | |
714 | } | |
715 | ||
de57606c SW |
716 | /* |
717 | * caps helpers | |
718 | */ | |
719 | static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) | |
720 | { | |
721 | return !RB_EMPTY_ROOT(&ci->i_caps); | |
722 | } | |
723 | ||
724 | extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); | |
725 | extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); | |
1af16d54 XL |
726 | extern int __ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, int mask, |
727 | int t); | |
de57606c SW |
728 | extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, |
729 | struct ceph_cap *cap); | |
730 | ||
731 | static inline int ceph_caps_issued(struct ceph_inode_info *ci) | |
732 | { | |
733 | int issued; | |
be655596 | 734 | spin_lock(&ci->i_ceph_lock); |
de57606c | 735 | issued = __ceph_caps_issued(ci, NULL); |
be655596 | 736 | spin_unlock(&ci->i_ceph_lock); |
de57606c SW |
737 | return issued; |
738 | } | |
739 | ||
1af16d54 XL |
740 | static inline int ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, |
741 | int mask, int touch) | |
de57606c SW |
742 | { |
743 | int r; | |
be655596 | 744 | spin_lock(&ci->i_ceph_lock); |
1af16d54 | 745 | r = __ceph_caps_issued_mask_metric(ci, mask, touch); |
be655596 | 746 | spin_unlock(&ci->i_ceph_lock); |
de57606c SW |
747 | return r; |
748 | } | |
749 | ||
750 | static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) | |
751 | { | |
752 | return ci->i_dirty_caps | ci->i_flushing_caps; | |
753 | } | |
f66fd9f0 YZ |
754 | extern struct ceph_cap_flush *ceph_alloc_cap_flush(void); |
755 | extern void ceph_free_cap_flush(struct ceph_cap_flush *cf); | |
756 | extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, | |
757 | struct ceph_cap_flush **pcf); | |
de57606c | 758 | |
9563f88c YZ |
759 | extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, |
760 | struct ceph_cap *ocap, int mask); | |
de57606c SW |
761 | extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); |
762 | extern int __ceph_caps_used(struct ceph_inode_info *ci); | |
763 | ||
719a2514 YZ |
764 | static inline bool __ceph_is_file_opened(struct ceph_inode_info *ci) |
765 | { | |
766 | return ci->i_nr_by_mode[0]; | |
767 | } | |
de57606c | 768 | extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); |
525d15e8 | 769 | extern int __ceph_caps_wanted(struct ceph_inode_info *ci); |
de57606c SW |
770 | |
771 | /* what the mds thinks we want */ | |
c1944fed | 772 | extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check); |
de57606c | 773 | |
37151668 YS |
774 | extern void ceph_caps_init(struct ceph_mds_client *mdsc); |
775 | extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); | |
fe33032d YZ |
776 | extern void ceph_adjust_caps_max_min(struct ceph_mds_client *mdsc, |
777 | struct ceph_mount_options *fsopt); | |
e30ee581 | 778 | extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, |
37151668 | 779 | struct ceph_cap_reservation *ctx, int need); |
7bf8f736 | 780 | extern void ceph_unreserve_caps(struct ceph_mds_client *mdsc, |
37151668 | 781 | struct ceph_cap_reservation *ctx); |
3d14c5d2 | 782 | extern void ceph_reservation_status(struct ceph_fs_client *client, |
de57606c | 783 | int *total, int *avail, int *used, |
85ccce43 | 784 | int *reserved, int *min); |
e19feff9 XL |
785 | extern void change_auth_cap_ses(struct ceph_inode_info *ci, |
786 | struct ceph_mds_session *session); | |
de57606c | 787 | |
de57606c | 788 | |
de57606c SW |
789 | |
790 | /* | |
791 | * we keep buffered readdir results attached to file->private_data | |
792 | */ | |
4918b6d1 | 793 | #define CEPH_F_SYNC 1 |
9cfa1098 | 794 | #define CEPH_F_ATEND 2 |
4918b6d1 | 795 | |
de57606c | 796 | struct ceph_file_info { |
252c6728 SW |
797 | short fmode; /* initialized on open */ |
798 | short flags; /* CEPH_F_* */ | |
de57606c | 799 | |
5d988308 YZ |
800 | spinlock_t rw_contexts_lock; |
801 | struct list_head rw_contexts; | |
f4b97866 | 802 | |
81f148a9 | 803 | u32 filp_gen; |
bb48bd4d CX |
804 | }; |
805 | ||
806 | struct ceph_dir_file_info { | |
807 | struct ceph_file_info file_info; | |
5d988308 | 808 | |
de57606c SW |
809 | /* readdir: position within the dir */ |
810 | u32 frag; | |
811 | struct ceph_mds_request *last_readdir; | |
de57606c SW |
812 | |
813 | /* readdir: position within a frag */ | |
f0494206 | 814 | unsigned next_offset; /* offset of next chunk (last_name's + 1) */ |
de57606c | 815 | char *last_name; /* last entry in previous chunk */ |
fdd4e158 YZ |
816 | long long dir_release_count; |
817 | long long dir_ordered_count; | |
818 | int readdir_cache_idx; | |
de57606c SW |
819 | |
820 | /* used for -o dirstat read() on directory thing */ | |
821 | char *dir_info; | |
822 | int dir_info_len; | |
823 | }; | |
824 | ||
5d988308 YZ |
825 | struct ceph_rw_context { |
826 | struct list_head list; | |
827 | struct task_struct *thread; | |
828 | int caps; | |
829 | }; | |
830 | ||
831 | #define CEPH_DEFINE_RW_CONTEXT(_name, _caps) \ | |
832 | struct ceph_rw_context _name = { \ | |
833 | .thread = current, \ | |
834 | .caps = _caps, \ | |
835 | } | |
836 | ||
837 | static inline void ceph_add_rw_context(struct ceph_file_info *cf, | |
838 | struct ceph_rw_context *ctx) | |
839 | { | |
840 | spin_lock(&cf->rw_contexts_lock); | |
841 | list_add(&ctx->list, &cf->rw_contexts); | |
842 | spin_unlock(&cf->rw_contexts_lock); | |
843 | } | |
844 | ||
845 | static inline void ceph_del_rw_context(struct ceph_file_info *cf, | |
846 | struct ceph_rw_context *ctx) | |
847 | { | |
848 | spin_lock(&cf->rw_contexts_lock); | |
849 | list_del(&ctx->list); | |
850 | spin_unlock(&cf->rw_contexts_lock); | |
851 | } | |
852 | ||
853 | static inline struct ceph_rw_context* | |
854 | ceph_find_rw_context(struct ceph_file_info *cf) | |
855 | { | |
856 | struct ceph_rw_context *ctx, *found = NULL; | |
857 | spin_lock(&cf->rw_contexts_lock); | |
858 | list_for_each_entry(ctx, &cf->rw_contexts, list) { | |
859 | if (ctx->thread == current) { | |
860 | found = ctx; | |
861 | break; | |
862 | } | |
863 | } | |
864 | spin_unlock(&cf->rw_contexts_lock); | |
865 | return found; | |
866 | } | |
867 | ||
fdd4e158 YZ |
868 | struct ceph_readdir_cache_control { |
869 | struct page *page; | |
870 | struct dentry **dentries; | |
871 | int index; | |
872 | }; | |
de57606c | 873 | |
de57606c SW |
874 | /* |
875 | * A "snap realm" describes a subset of the file hierarchy sharing | |
876 | * the same set of snapshots that apply to it. The realms themselves | |
877 | * are organized into a hierarchy, such that children inherit (some of) | |
878 | * the snapshots of their parents. | |
879 | * | |
880 | * All inodes within the realm that have capabilities are linked into a | |
881 | * per-realm list. | |
882 | */ | |
883 | struct ceph_snap_realm { | |
884 | u64 ino; | |
e3161f17 | 885 | struct inode *inode; |
de57606c | 886 | atomic_t nref; |
a105f00c SW |
887 | struct rb_node node; |
888 | ||
de57606c SW |
889 | u64 created, seq; |
890 | u64 parent_ino; | |
891 | u64 parent_since; /* snapid when our current parent became so */ | |
892 | ||
893 | u64 *prior_parent_snaps; /* snaps inherited from any parents we */ | |
aa711ee3 | 894 | u32 num_prior_parent_snaps; /* had prior to parent_since */ |
de57606c | 895 | u64 *snaps; /* snaps specific to this realm */ |
aa711ee3 | 896 | u32 num_snaps; |
de57606c SW |
897 | |
898 | struct ceph_snap_realm *parent; | |
899 | struct list_head children; /* list of child realms */ | |
900 | struct list_head child_item; | |
901 | ||
902 | struct list_head empty_item; /* if i have ref==0 */ | |
903 | ||
ae00d4f3 SW |
904 | struct list_head dirty_item; /* if realm needs new context */ |
905 | ||
74a31df4 XL |
906 | struct list_head rebuild_item; /* rebuild snap realms _downward_ in hierarchy */ |
907 | ||
de57606c SW |
908 | /* the current set of snaps for this realm */ |
909 | struct ceph_snap_context *cached_context; | |
910 | ||
911 | struct list_head inodes_with_caps; | |
912 | spinlock_t inodes_with_caps_lock; | |
913 | }; | |
914 | ||
3d14c5d2 | 915 | static inline int default_congestion_kb(void) |
de57606c | 916 | { |
3d14c5d2 YS |
917 | int congestion_kb; |
918 | ||
919 | /* | |
920 | * Copied from NFS | |
921 | * | |
922 | * congestion size, scale with available memory. | |
923 | * | |
924 | * 64MB: 8192k | |
925 | * 128MB: 11585k | |
926 | * 256MB: 16384k | |
927 | * 512MB: 23170k | |
928 | * 1GB: 32768k | |
929 | * 2GB: 46340k | |
930 | * 4GB: 65536k | |
931 | * 8GB: 92681k | |
932 | * 16GB: 131072k | |
933 | * | |
934 | * This allows larger machines to have larger/more transfers. | |
935 | * Limit the default to 256M | |
936 | */ | |
ca79b0c2 | 937 | congestion_kb = (16*int_sqrt(totalram_pages())) << (PAGE_SHIFT-10); |
3d14c5d2 YS |
938 | if (congestion_kb > 256*1024) |
939 | congestion_kb = 256*1024; | |
940 | ||
941 | return congestion_kb; | |
de57606c SW |
942 | } |
943 | ||
944 | ||
d468e729 YZ |
945 | /* super.c */ |
946 | extern int ceph_force_reconnect(struct super_block *sb); | |
de57606c SW |
947 | /* snap.c */ |
948 | struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, | |
949 | u64 ino); | |
950 | extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, | |
951 | struct ceph_snap_realm *realm); | |
952 | extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, | |
953 | struct ceph_snap_realm *realm); | |
954 | extern int ceph_update_snap_trace(struct ceph_mds_client *m, | |
982d6011 YZ |
955 | void *p, void *e, bool deletion, |
956 | struct ceph_snap_realm **realm_ret); | |
0ba92e1c | 957 | void ceph_change_snap_realm(struct inode *inode, struct ceph_snap_realm *realm); |
de57606c | 958 | extern void ceph_handle_snap(struct ceph_mds_client *mdsc, |
2600d2dd | 959 | struct ceph_mds_session *session, |
de57606c | 960 | struct ceph_msg *msg); |
de57606c SW |
961 | extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, |
962 | struct ceph_cap_snap *capsnap); | |
5ed91587 | 963 | extern void ceph_cleanup_global_and_empty_realms(struct ceph_mds_client *mdsc); |
de57606c | 964 | |
75c9627e YZ |
965 | extern struct ceph_snapid_map *ceph_get_snapid_map(struct ceph_mds_client *mdsc, |
966 | u64 snap); | |
967 | extern void ceph_put_snapid_map(struct ceph_mds_client* mdsc, | |
968 | struct ceph_snapid_map *sm); | |
969 | extern void ceph_trim_snapid_map(struct ceph_mds_client *mdsc); | |
970 | extern void ceph_cleanup_snapid_map(struct ceph_mds_client *mdsc); | |
631ed4b0 | 971 | void ceph_umount_begin(struct super_block *sb); |
75c9627e YZ |
972 | |
973 | ||
de57606c SW |
974 | /* |
975 | * a cap_snap is "pending" if it is still awaiting an in-progress | |
976 | * sync write (that may/may not still update size, mtime, etc.). | |
977 | */ | |
978 | static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) | |
979 | { | |
980 | return !list_empty(&ci->i_cap_snaps) && | |
86056090 YZ |
981 | list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap, |
982 | ci_item)->writing; | |
de57606c SW |
983 | } |
984 | ||
de57606c | 985 | /* inode.c */ |
966c7160 JL |
986 | struct ceph_mds_reply_info_in; |
987 | struct ceph_mds_reply_dirfrag; | |
988 | ||
de57606c SW |
989 | extern const struct inode_operations ceph_file_iops; |
990 | ||
991 | extern struct inode *ceph_alloc_inode(struct super_block *sb); | |
87bc5b89 | 992 | extern void ceph_evict_inode(struct inode *inode); |
cfa6d412 | 993 | extern void ceph_free_inode(struct inode *inode); |
de57606c SW |
994 | |
995 | extern struct inode *ceph_get_inode(struct super_block *sb, | |
996 | struct ceph_vino vino); | |
997 | extern struct inode *ceph_get_snapdir(struct inode *parent); | |
998 | extern int ceph_fill_file_size(struct inode *inode, int issued, | |
999 | u32 truncate_seq, u64 truncate_size, u64 size); | |
1000 | extern void ceph_fill_file_time(struct inode *inode, int issued, | |
9bbeab41 AB |
1001 | u64 time_warp_seq, struct timespec64 *ctime, |
1002 | struct timespec64 *mtime, | |
1003 | struct timespec64 *atime); | |
966c7160 JL |
1004 | extern int ceph_fill_inode(struct inode *inode, struct page *locked_page, |
1005 | struct ceph_mds_reply_info_in *iinfo, | |
1006 | struct ceph_mds_reply_dirfrag *dirinfo, | |
1007 | struct ceph_mds_session *session, int cap_fmode, | |
1008 | struct ceph_cap_reservation *caps_reservation); | |
de57606c | 1009 | extern int ceph_fill_trace(struct super_block *sb, |
f5a03b08 | 1010 | struct ceph_mds_request *req); |
de57606c SW |
1011 | extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, |
1012 | struct ceph_mds_session *session); | |
1013 | ||
1014 | extern int ceph_inode_holds_cap(struct inode *inode, int mask); | |
1015 | ||
efb0ca76 | 1016 | extern bool ceph_inode_set_size(struct inode *inode, loff_t size); |
b415bf4f | 1017 | extern void __ceph_do_pending_vmtruncate(struct inode *inode); |
64f28c62 | 1018 | |
64f28c62 JL |
1019 | void ceph_queue_inode_work(struct inode *inode, int work_bit); |
1020 | ||
1021 | static inline void ceph_queue_vmtruncate(struct inode *inode) | |
1022 | { | |
1023 | ceph_queue_inode_work(inode, CEPH_I_WORK_VMTRUNCATE); | |
1024 | } | |
1025 | ||
1026 | static inline void ceph_queue_invalidate(struct inode *inode) | |
1027 | { | |
1028 | ceph_queue_inode_work(inode, CEPH_I_WORK_INVALIDATE_PAGES); | |
1029 | } | |
1030 | ||
1031 | static inline void ceph_queue_writeback(struct inode *inode) | |
1032 | { | |
1033 | ceph_queue_inode_work(inode, CEPH_I_WORK_WRITEBACK); | |
1034 | } | |
1035 | ||
a8810cdc JL |
1036 | static inline void ceph_queue_check_caps(struct inode *inode) |
1037 | { | |
1038 | ceph_queue_inode_work(inode, CEPH_I_WORK_CHECK_CAPS); | |
1039 | } | |
1040 | ||
1041 | static inline void ceph_queue_flush_snaps(struct inode *inode) | |
1042 | { | |
1043 | ceph_queue_inode_work(inode, CEPH_I_WORK_FLUSH_SNAPS); | |
1044 | } | |
1045 | ||
5eed80fb | 1046 | extern int ceph_try_to_choose_auth_mds(struct inode *inode, int mask); |
01deead0 YZ |
1047 | extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, |
1048 | int mask, bool force); | |
1049 | static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) | |
1050 | { | |
1051 | return __ceph_do_getattr(inode, NULL, mask, force); | |
1052 | } | |
4609e1f1 | 1053 | extern int ceph_permission(struct mnt_idmap *idmap, |
549c7297 | 1054 | struct inode *inode, int mask); |
a26fecca | 1055 | extern int __ceph_setattr(struct inode *inode, struct iattr *attr); |
c1632a0f | 1056 | extern int ceph_setattr(struct mnt_idmap *idmap, |
549c7297 | 1057 | struct dentry *dentry, struct iattr *attr); |
b74d24f7 | 1058 | extern int ceph_getattr(struct mnt_idmap *idmap, |
549c7297 | 1059 | const struct path *path, struct kstat *stat, |
a528d35e | 1060 | u32 request_mask, unsigned int flags); |
5d6451b1 JL |
1061 | void ceph_inode_shutdown(struct inode *inode); |
1062 | ||
1063 | static inline bool ceph_inode_is_shutdown(struct inode *inode) | |
1064 | { | |
1065 | unsigned long flags = READ_ONCE(ceph_inode(inode)->i_ceph_flags); | |
1066 | struct ceph_fs_client *fsc = ceph_inode_to_client(inode); | |
1067 | int state = READ_ONCE(fsc->mount_state); | |
1068 | ||
1069 | return (flags & CEPH_I_SHUTDOWN) || state >= CEPH_MOUNT_SHUTDOWN; | |
1070 | } | |
de57606c SW |
1071 | |
1072 | /* xattr.c */ | |
a26fecca | 1073 | int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); |
6ddf5f16 | 1074 | int ceph_do_getvxattr(struct inode *inode, const char *name, void *value, size_t size); |
7221fe4c | 1075 | ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); |
de57606c | 1076 | extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); |
12fe3dda | 1077 | extern struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci); |
de57606c | 1078 | extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); |
b1ee94aa | 1079 | extern const struct xattr_handler *ceph_xattr_handlers[]; |
de57606c | 1080 | |
5c31e92d YZ |
1081 | struct ceph_acl_sec_ctx { |
1082 | #ifdef CONFIG_CEPH_FS_POSIX_ACL | |
1083 | void *default_acl; | |
1084 | void *acl; | |
ac6713cc YZ |
1085 | #endif |
1086 | #ifdef CONFIG_CEPH_FS_SECURITY_LABEL | |
1087 | void *sec_ctx; | |
1088 | u32 sec_ctxlen; | |
5c31e92d YZ |
1089 | #endif |
1090 | struct ceph_pagelist *pagelist; | |
1091 | }; | |
1092 | ||
315f2408 YZ |
1093 | #ifdef CONFIG_SECURITY |
1094 | extern bool ceph_security_xattr_deadlock(struct inode *in); | |
1095 | extern bool ceph_security_xattr_wanted(struct inode *in); | |
1096 | #else | |
1097 | static inline bool ceph_security_xattr_deadlock(struct inode *in) | |
1098 | { | |
1099 | return false; | |
1100 | } | |
1101 | static inline bool ceph_security_xattr_wanted(struct inode *in) | |
1102 | { | |
1103 | return false; | |
1104 | } | |
1105 | #endif | |
1106 | ||
ac6713cc YZ |
1107 | #ifdef CONFIG_CEPH_FS_SECURITY_LABEL |
1108 | extern int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, | |
1109 | struct ceph_acl_sec_ctx *ctx); | |
668959a5 JL |
1110 | static inline void ceph_security_invalidate_secctx(struct inode *inode) |
1111 | { | |
1112 | security_inode_invalidate_secctx(inode); | |
1113 | } | |
ac6713cc YZ |
1114 | #else |
1115 | static inline int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, | |
1116 | struct ceph_acl_sec_ctx *ctx) | |
1117 | { | |
1118 | return 0; | |
1119 | } | |
1120 | static inline void ceph_security_invalidate_secctx(struct inode *inode) | |
1121 | { | |
1122 | } | |
1123 | #endif | |
1124 | ||
5c31e92d | 1125 | void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx); |
7221fe4c | 1126 | |
5c31e92d | 1127 | /* acl.c */ |
7221fe4c GZ |
1128 | #ifdef CONFIG_CEPH_FS_POSIX_ACL |
1129 | ||
0cad6246 | 1130 | struct posix_acl *ceph_get_acl(struct inode *, int, bool); |
13e83a49 | 1131 | int ceph_set_acl(struct mnt_idmap *idmap, |
138060ba | 1132 | struct dentry *dentry, struct posix_acl *acl, int type); |
b1ee94aa | 1133 | int ceph_pre_init_acls(struct inode *dir, umode_t *mode, |
5c31e92d YZ |
1134 | struct ceph_acl_sec_ctx *as_ctx); |
1135 | void ceph_init_inode_acls(struct inode *inode, | |
1136 | struct ceph_acl_sec_ctx *as_ctx); | |
c969d9bf GZ |
1137 | |
1138 | static inline void ceph_forget_all_cached_acls(struct inode *inode) | |
1139 | { | |
1140 | forget_all_cached_acls(inode); | |
1141 | } | |
7221fe4c GZ |
1142 | |
1143 | #else | |
1144 | ||
1145 | #define ceph_get_acl NULL | |
72466d0b | 1146 | #define ceph_set_acl NULL |
7221fe4c | 1147 | |
b1ee94aa | 1148 | static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, |
5c31e92d | 1149 | struct ceph_acl_sec_ctx *as_ctx) |
7221fe4c GZ |
1150 | { |
1151 | return 0; | |
1152 | } | |
b1ee94aa | 1153 | static inline void ceph_init_inode_acls(struct inode *inode, |
5c31e92d | 1154 | struct ceph_acl_sec_ctx *as_ctx) |
b1ee94aa YZ |
1155 | { |
1156 | } | |
7221fe4c GZ |
1157 | static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) |
1158 | { | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | static inline void ceph_forget_all_cached_acls(struct inode *inode) | |
1163 | { | |
1164 | } | |
1165 | ||
1166 | #endif | |
1167 | ||
de57606c SW |
1168 | /* caps.c */ |
1169 | extern const char *ceph_cap_string(int c); | |
1170 | extern void ceph_handle_caps(struct ceph_mds_session *session, | |
1171 | struct ceph_msg *msg); | |
d9df2783 YZ |
1172 | extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, |
1173 | struct ceph_cap_reservation *ctx); | |
1174 | extern void ceph_add_cap(struct inode *inode, | |
1175 | struct ceph_mds_session *session, u64 cap_id, | |
135e671e | 1176 | unsigned issued, unsigned wanted, |
d9df2783 YZ |
1177 | unsigned cap, unsigned seq, u64 realmino, int flags, |
1178 | struct ceph_cap **new_cap); | |
a096b09a | 1179 | extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); |
a76d0a9c | 1180 | extern void ceph_remove_cap(struct ceph_cap *cap, bool queue_release); |
d6e47819 | 1181 | extern void __ceph_remove_caps(struct ceph_inode_info *ci); |
37151668 YS |
1182 | extern void ceph_put_cap(struct ceph_mds_client *mdsc, |
1183 | struct ceph_cap *cap); | |
9215aeea | 1184 | extern int ceph_is_any_caps(struct inode *inode); |
de57606c | 1185 | |
f1a3d572 | 1186 | extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); |
02c24a82 JB |
1187 | extern int ceph_fsync(struct file *file, loff_t start, loff_t end, |
1188 | int datasync); | |
e548e9b9 YZ |
1189 | extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, |
1190 | struct ceph_mds_session *session); | |
de57606c SW |
1191 | extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, |
1192 | struct ceph_mds_session *session); | |
e8a4d267 JL |
1193 | void ceph_kick_flushing_inode_caps(struct ceph_mds_session *session, |
1194 | struct ceph_inode_info *ci); | |
2bc50259 GF |
1195 | extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, |
1196 | int mds); | |
40dcf75e JL |
1197 | extern void ceph_take_cap_refs(struct ceph_inode_info *ci, int caps, |
1198 | bool snap_rwsem_locked); | |
de57606c SW |
1199 | extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); |
1200 | extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); | |
a8810cdc | 1201 | extern void ceph_put_cap_refs_async(struct ceph_inode_info *ci, int had); |
e64f44a8 XL |
1202 | extern void ceph_put_cap_refs_no_check_caps(struct ceph_inode_info *ci, |
1203 | int had); | |
de57606c SW |
1204 | extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, |
1205 | struct ceph_snap_context *snapc); | |
a6d37ccd XL |
1206 | extern void __ceph_remove_capsnap(struct inode *inode, |
1207 | struct ceph_cap_snap *capsnap, | |
1208 | bool *wake_ci, bool *wake_mdsc); | |
1209 | extern void ceph_remove_capsnap(struct inode *inode, | |
1210 | struct ceph_cap_snap *capsnap, | |
1211 | bool *wake_ci, bool *wake_mdsc); | |
ed9b430c YZ |
1212 | extern void ceph_flush_snaps(struct ceph_inode_info *ci, |
1213 | struct ceph_mds_session **psession); | |
efb0ca76 | 1214 | extern bool __ceph_should_report_size(struct ceph_inode_info *ci); |
e4b731cc | 1215 | extern void ceph_check_caps(struct ceph_inode_info *ci, int flags); |
bf2ba432 | 1216 | extern unsigned long ceph_check_delayed_caps(struct ceph_mds_client *mdsc); |
afcdaea3 | 1217 | extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); |
6ef0bc6d | 1218 | extern int ceph_drop_caps_for_unlink(struct inode *inode); |
de57606c SW |
1219 | extern int ceph_encode_inode_release(void **p, struct inode *inode, |
1220 | int mds, int drop, int unless, int force); | |
1221 | extern int ceph_encode_dentry_release(void **p, struct dentry *dn, | |
ca6c8ae0 | 1222 | struct inode *dir, |
de57606c SW |
1223 | int mds, int drop, int unless); |
1224 | ||
5e3ded1b | 1225 | extern int ceph_get_caps(struct file *filp, int need, int want, |
e72968e1 | 1226 | loff_t endoff, int *got); |
5e3ded1b | 1227 | extern int ceph_try_get_caps(struct inode *inode, |
2ee9dd95 | 1228 | int need, int want, bool nonblock, int *got); |
de57606c SW |
1229 | |
1230 | /* for counting open files by mode */ | |
719a2514 YZ |
1231 | extern void ceph_get_fmode(struct ceph_inode_info *ci, int mode, int count); |
1232 | extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode, int count); | |
1233 | extern void __ceph_touch_fmode(struct ceph_inode_info *ci, | |
1234 | struct ceph_mds_client *mdsc, int fmode); | |
de57606c SW |
1235 | |
1236 | /* addr.c */ | |
1237 | extern const struct address_space_operations ceph_aops; | |
bc899ee1 | 1238 | extern const struct netfs_request_ops ceph_netfs_ops; |
de57606c | 1239 | extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); |
083db6fd | 1240 | extern int ceph_uninline_data(struct file *file); |
5e3ded1b | 1241 | extern int ceph_pool_perm_check(struct inode *inode, int need); |
10183a69 | 1242 | extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); |
36e6da98 | 1243 | int ceph_purge_inode_cap(struct inode *inode, struct ceph_cap *cap, bool *invalidate); |
de57606c | 1244 | |
48490776 XL |
1245 | static inline bool ceph_has_inline_data(struct ceph_inode_info *ci) |
1246 | { | |
1247 | if (ci->i_inline_version == CEPH_INLINE_NONE || | |
1248 | ci->i_inline_version == 1) /* initial version, no data */ | |
1249 | return false; | |
1250 | return true; | |
1251 | } | |
1252 | ||
de57606c SW |
1253 | /* file.c */ |
1254 | extern const struct file_operations ceph_file_fops; | |
9e0eb85d | 1255 | |
719a2514 | 1256 | extern int ceph_renew_caps(struct inode *inode, int fmode); |
de57606c | 1257 | extern int ceph_open(struct inode *inode, struct file *file); |
5ef50c3b | 1258 | extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, |
44907d79 | 1259 | struct file *file, unsigned flags, umode_t mode); |
de57606c | 1260 | extern int ceph_release(struct inode *inode, struct file *filp); |
31c542a1 YZ |
1261 | extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, |
1262 | char *data, size_t len); | |
55f2a045 | 1263 | |
de57606c SW |
1264 | /* dir.c */ |
1265 | extern const struct file_operations ceph_dir_fops; | |
38c48b5f | 1266 | extern const struct file_operations ceph_snapdir_fops; |
de57606c | 1267 | extern const struct inode_operations ceph_dir_iops; |
38c48b5f | 1268 | extern const struct inode_operations ceph_snapdir_iops; |
18fc8abd | 1269 | extern const struct dentry_operations ceph_dentry_ops; |
de57606c | 1270 | |
f3c4ebe6 | 1271 | extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order); |
de57606c | 1272 | extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); |
aa60cfc3 | 1273 | extern struct dentry *ceph_handle_snapdir(struct ceph_mds_request *req, |
7a971e2c | 1274 | struct dentry *dentry); |
de57606c SW |
1275 | extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, |
1276 | struct dentry *dentry, int err); | |
1277 | ||
37c4efc1 YZ |
1278 | extern void __ceph_dentry_lease_touch(struct ceph_dentry_info *di); |
1279 | extern void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di); | |
81a6cf2d | 1280 | extern void ceph_invalidate_dentry_lease(struct dentry *dentry); |
37c4efc1 | 1281 | extern int ceph_trim_dentries(struct ceph_mds_client *mdsc); |
e5f86dc3 | 1282 | extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); |
fdd4e158 | 1283 | extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl); |
de57606c | 1284 | |
de57606c SW |
1285 | /* ioctl.c */ |
1286 | extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
1287 | ||
1288 | /* export.c */ | |
1289 | extern const struct export_operations ceph_export_ops; | |
3886274a | 1290 | struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino); |
de57606c | 1291 | |
40819f6f | 1292 | /* locks.c */ |
eb13e832 | 1293 | extern __init void ceph_flock_init(void); |
40819f6f GF |
1294 | extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); |
1295 | extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); | |
1296 | extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); | |
39be95e9 JS |
1297 | extern int ceph_encode_locks_to_buffer(struct inode *inode, |
1298 | struct ceph_filelock *flocks, | |
1299 | int num_fcntl_locks, | |
1300 | int num_flock_locks); | |
1301 | extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, | |
1302 | struct ceph_pagelist *pagelist, | |
1303 | int num_fcntl_locks, int num_flock_locks); | |
40819f6f | 1304 | |
3d14c5d2 | 1305 | /* debugfs.c */ |
1a829ff2 | 1306 | extern void ceph_fs_debugfs_init(struct ceph_fs_client *client); |
3d14c5d2 YS |
1307 | extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); |
1308 | ||
fb18a575 | 1309 | /* quota.c */ |
55ab5520 LH |
1310 | |
1311 | enum quota_get_realm { | |
1312 | QUOTA_GET_MAX_FILES, | |
1313 | QUOTA_GET_MAX_BYTES, | |
1314 | QUOTA_GET_ANY | |
1315 | }; | |
1316 | ||
1317 | static inline bool __ceph_has_quota(struct ceph_inode_info *ci, | |
1318 | enum quota_get_realm which) | |
d557c48d | 1319 | { |
55ab5520 LH |
1320 | bool has_quota = false; |
1321 | ||
1322 | switch (which) { | |
1323 | case QUOTA_GET_MAX_BYTES: | |
1324 | has_quota = !!ci->i_max_bytes; | |
1325 | break; | |
1326 | case QUOTA_GET_MAX_FILES: | |
1327 | has_quota = !!ci->i_max_files; | |
1328 | break; | |
1329 | default: | |
1330 | has_quota = !!(ci->i_max_files || ci->i_max_bytes); | |
1331 | } | |
1332 | return has_quota; | |
d557c48d LH |
1333 | } |
1334 | ||
1335 | extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc); | |
1336 | ||
1337 | static inline void __ceph_update_quota(struct ceph_inode_info *ci, | |
1338 | u64 max_bytes, u64 max_files) | |
1339 | { | |
1340 | bool had_quota, has_quota; | |
55ab5520 | 1341 | had_quota = __ceph_has_quota(ci, QUOTA_GET_ANY); |
d557c48d LH |
1342 | ci->i_max_bytes = max_bytes; |
1343 | ci->i_max_files = max_files; | |
55ab5520 | 1344 | has_quota = __ceph_has_quota(ci, QUOTA_GET_ANY); |
d557c48d LH |
1345 | |
1346 | if (had_quota != has_quota) | |
874c8ca1 | 1347 | ceph_adjust_quota_realms_count(&ci->netfs.inode, has_quota); |
d557c48d LH |
1348 | } |
1349 | ||
fb18a575 LH |
1350 | extern void ceph_handle_quota(struct ceph_mds_client *mdsc, |
1351 | struct ceph_mds_session *session, | |
1352 | struct ceph_msg *msg); | |
b7a29217 | 1353 | extern bool ceph_quota_is_max_files_exceeded(struct inode *inode); |
6646ea1c | 1354 | extern bool ceph_quota_is_same_realm(struct inode *old, struct inode *new); |
2b83845f LH |
1355 | extern bool ceph_quota_is_max_bytes_exceeded(struct inode *inode, |
1356 | loff_t newlen); | |
1ab302a0 LH |
1357 | extern bool ceph_quota_is_max_bytes_approaching(struct inode *inode, |
1358 | loff_t newlen); | |
9122eed5 LH |
1359 | extern bool ceph_quota_update_statfs(struct ceph_fs_client *fsc, |
1360 | struct kstatfs *buf); | |
0c44a8e0 | 1361 | extern void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc); |
fb18a575 | 1362 | |
de57606c | 1363 | #endif /* _FS_CEPH_SUPER_H */ |