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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 | |
4868e537 XL |
103 | #define CEPH_ASYNC_CREATE_CONFLICT_BITS 8 |
104 | ||
3d14c5d2 | 105 | struct ceph_fs_client { |
de57606c SW |
106 | struct super_block *sb; |
107 | ||
18f473b3 XL |
108 | struct list_head metric_wakeup; |
109 | ||
3d14c5d2 YS |
110 | struct ceph_mount_options *mount_options; |
111 | struct ceph_client *client; | |
de57606c | 112 | |
aa5c7910 | 113 | int mount_state; |
81f148a9 | 114 | |
0b98acd6 | 115 | bool blocklisted; |
131d7eb4 | 116 | |
78beb0ff LH |
117 | bool have_copy_from2; |
118 | ||
81f148a9 | 119 | u32 filp_gen; |
719784ba | 120 | loff_t max_file_size; |
85ccce43 | 121 | |
3d14c5d2 | 122 | struct ceph_mds_client *mdsc; |
de57606c | 123 | |
e3ec8d68 | 124 | atomic_long_t writeback_count; |
503d4fa6 | 125 | bool write_congested; |
e3ec8d68 | 126 | |
1cf89a8d | 127 | struct workqueue_struct *inode_wq; |
e3ec8d68 | 128 | struct workqueue_struct *cap_wq; |
de57606c | 129 | |
4868e537 XL |
130 | DECLARE_HASHTABLE(async_unlink_conflict, CEPH_ASYNC_CREATE_CONFLICT_BITS); |
131 | spinlock_t async_unlink_conflict_lock; | |
132 | ||
0743304d | 133 | #ifdef CONFIG_DEBUG_FS |
3d14c5d2 | 134 | struct dentry *debugfs_dentry_lru, *debugfs_caps; |
2baba250 | 135 | struct dentry *debugfs_congestion_kb; |
06edf046 | 136 | struct dentry *debugfs_bdi; |
3d14c5d2 | 137 | struct dentry *debugfs_mdsc, *debugfs_mdsmap; |
247b1f19 | 138 | struct dentry *debugfs_status; |
14ed9703 | 139 | struct dentry *debugfs_mds_sessions; |
cbed4ff7 | 140 | struct dentry *debugfs_metrics_dir; |
0743304d | 141 | #endif |
99ccbd22 MT |
142 | |
143 | #ifdef CONFIG_CEPH_FSCACHE | |
400e1286 | 144 | struct fscache_volume *fscache; |
99ccbd22 | 145 | #endif |
de57606c SW |
146 | }; |
147 | ||
3d14c5d2 | 148 | |
de57606c SW |
149 | /* |
150 | * File i/o capability. This tracks shared state with the metadata | |
151 | * server that allows us to cache or writeback attributes or to read | |
152 | * and write data. For any given inode, we should have one or more | |
153 | * capabilities, one issued by each metadata server, and our | |
154 | * cumulative access is the OR of all issued capabilities. | |
155 | * | |
156 | * Each cap is referenced by the inode's i_caps rbtree and by per-mds | |
157 | * session capability lists. | |
158 | */ | |
159 | struct ceph_cap { | |
160 | struct ceph_inode_info *ci; | |
161 | struct rb_node ci_node; /* per-ci cap tree */ | |
162 | struct ceph_mds_session *session; | |
163 | struct list_head session_caps; /* per-session caplist */ | |
de57606c | 164 | u64 cap_id; /* unique cap id (mds provided) */ |
745a8e3b YZ |
165 | union { |
166 | /* in-use caps */ | |
167 | struct { | |
168 | int issued; /* latest, from the mds */ | |
169 | int implemented; /* implemented superset of | |
170 | issued (for revocation) */ | |
c74d79af JL |
171 | int mds; /* mds index for this cap */ |
172 | int mds_wanted; /* caps wanted from this mds */ | |
745a8e3b YZ |
173 | }; |
174 | /* caps to release */ | |
175 | struct { | |
176 | u64 cap_ino; | |
177 | int queue_release; | |
178 | }; | |
179 | }; | |
685f9a5d SW |
180 | u32 seq, issue_seq, mseq; |
181 | u32 cap_gen; /* active/stale cycle */ | |
de57606c SW |
182 | unsigned long last_used; |
183 | struct list_head caps_item; | |
184 | }; | |
185 | ||
a0d93e32 YZ |
186 | #define CHECK_CAPS_AUTHONLY 1 /* only check auth cap */ |
187 | #define CHECK_CAPS_FLUSH 2 /* flush any dirty caps */ | |
188 | #define CHECK_CAPS_NOINVAL 4 /* don't invalidate pagecache */ | |
de57606c | 189 | |
0e294387 YZ |
190 | struct ceph_cap_flush { |
191 | u64 tid; | |
b2f9fa1f | 192 | int caps; |
c8799fc4 | 193 | bool wake; /* wake up flush waiters when finish ? */ |
b2f9fa1f | 194 | bool is_capsnap; /* true means capsnap */ |
0e294387 YZ |
195 | struct list_head g_list; // global |
196 | struct list_head i_list; // per inode | |
197 | }; | |
198 | ||
de57606c SW |
199 | /* |
200 | * Snapped cap state that is pending flush to mds. When a snapshot occurs, | |
201 | * we first complete any in-process sync writes and writeback any dirty | |
202 | * data before flushing the snapped state (tracked here) back to the MDS. | |
203 | */ | |
204 | struct ceph_cap_snap { | |
805692d0 | 205 | refcount_t nref; |
0e294387 | 206 | struct list_head ci_item; |
de57606c | 207 | |
0e294387 YZ |
208 | struct ceph_cap_flush cap_flush; |
209 | ||
210 | u64 follows; | |
de57606c SW |
211 | int issued, dirty; |
212 | struct ceph_snap_context *context; | |
213 | ||
5706b27d | 214 | umode_t mode; |
05cb11c1 EB |
215 | kuid_t uid; |
216 | kgid_t gid; | |
de57606c | 217 | |
4a625be4 | 218 | struct ceph_buffer *xattr_blob; |
de57606c SW |
219 | u64 xattr_version; |
220 | ||
221 | u64 size; | |
176c77c9 | 222 | u64 change_attr; |
ec62b894 | 223 | struct timespec64 mtime, atime, ctime, btime; |
de57606c | 224 | u64 time_warp_seq; |
5f743e45 YZ |
225 | u64 truncate_size; |
226 | u32 truncate_seq; | |
de57606c SW |
227 | int writing; /* a sync write is still in progress */ |
228 | int dirty_pages; /* dirty pages awaiting writeback */ | |
e20d258d | 229 | bool inline_data; |
86056090 | 230 | bool need_flush; |
de57606c SW |
231 | }; |
232 | ||
233 | static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) | |
234 | { | |
805692d0 | 235 | if (refcount_dec_and_test(&capsnap->nref)) { |
4a625be4 SW |
236 | if (capsnap->xattr_blob) |
237 | ceph_buffer_put(capsnap->xattr_blob); | |
ab58a5a1 | 238 | kmem_cache_free(ceph_cap_snap_cachep, capsnap); |
4a625be4 | 239 | } |
de57606c SW |
240 | } |
241 | ||
242 | /* | |
243 | * The frag tree describes how a directory is fragmented, potentially across | |
244 | * multiple metadata servers. It is also used to indicate points where | |
245 | * metadata authority is delegated, and whether/where metadata is replicated. | |
246 | * | |
247 | * A _leaf_ frag will be present in the i_fragtree IFF there is | |
248 | * delegation info. That is, if mds >= 0 || ndist > 0. | |
249 | */ | |
250 | #define CEPH_MAX_DIRFRAG_REP 4 | |
251 | ||
252 | struct ceph_inode_frag { | |
253 | struct rb_node node; | |
254 | ||
255 | /* fragtree state */ | |
256 | u32 frag; | |
257 | int split_by; /* i.e. 2^(split_by) children */ | |
258 | ||
259 | /* delegation and replication info */ | |
260 | int mds; /* -1 if same authority as parent */ | |
261 | int ndist; /* >0 if replicated */ | |
262 | int dist[CEPH_MAX_DIRFRAG_REP]; | |
263 | }; | |
264 | ||
265 | /* | |
266 | * We cache inode xattrs as an encoded blob until they are first used, | |
267 | * at which point we parse them into an rbtree. | |
268 | */ | |
269 | struct ceph_inode_xattr { | |
270 | struct rb_node node; | |
271 | ||
272 | const char *name; | |
273 | int name_len; | |
274 | const char *val; | |
275 | int val_len; | |
276 | int dirty; | |
277 | ||
278 | int should_free_name; | |
279 | int should_free_val; | |
280 | }; | |
281 | ||
3d14c5d2 YS |
282 | /* |
283 | * Ceph dentry state | |
284 | */ | |
285 | struct ceph_dentry_info { | |
37c4efc1 | 286 | struct dentry *dentry; |
3d14c5d2 | 287 | struct ceph_mds_session *lease_session; |
37c4efc1 | 288 | struct list_head lease_list; |
4868e537 XL |
289 | struct hlist_node hnode; |
290 | unsigned long flags; | |
97aeb6bf YZ |
291 | int lease_shared_gen; |
292 | u32 lease_gen; | |
3d14c5d2 YS |
293 | u32 lease_seq; |
294 | unsigned long lease_renew_after, lease_renew_from; | |
9b16f03c | 295 | unsigned long time; |
3d14c5d2 YS |
296 | u64 offset; |
297 | }; | |
298 | ||
4868e537 XL |
299 | #define CEPH_DENTRY_REFERENCED (1 << 0) |
300 | #define CEPH_DENTRY_LEASE_LIST (1 << 1) | |
301 | #define CEPH_DENTRY_SHRINK_LIST (1 << 2) | |
302 | #define CEPH_DENTRY_PRIMARY_LINK (1 << 3) | |
303 | #define CEPH_DENTRY_ASYNC_UNLINK_BIT (4) | |
304 | #define CEPH_DENTRY_ASYNC_UNLINK (1 << CEPH_DENTRY_ASYNC_UNLINK_BIT) | |
00061645 XL |
305 | #define CEPH_DENTRY_ASYNC_CREATE_BIT (5) |
306 | #define CEPH_DENTRY_ASYNC_CREATE (1 << CEPH_DENTRY_ASYNC_CREATE_BIT) | |
37c4efc1 | 307 | |
de57606c SW |
308 | struct ceph_inode_xattrs_info { |
309 | /* | |
310 | * (still encoded) xattr blob. we avoid the overhead of parsing | |
311 | * this until someone actually calls getxattr, etc. | |
312 | * | |
313 | * blob->vec.iov_len == 4 implies there are no xattrs; blob == | |
314 | * NULL means we don't know. | |
315 | */ | |
316 | struct ceph_buffer *blob, *prealloc_blob; | |
317 | ||
318 | struct rb_root index; | |
319 | bool dirty; | |
320 | int count; | |
321 | int names_size; | |
322 | int vals_size; | |
323 | u64 version, index_version; | |
324 | }; | |
325 | ||
326 | /* | |
327 | * Ceph inode. | |
328 | */ | |
de57606c | 329 | struct ceph_inode_info { |
874c8ca1 | 330 | struct netfs_inode netfs; /* Netfslib context and vfs inode */ |
de57606c SW |
331 | struct ceph_vino i_vino; /* ceph ino + snap */ |
332 | ||
be655596 SW |
333 | spinlock_t i_ceph_lock; |
334 | ||
de57606c | 335 | u64 i_version; |
31c542a1 | 336 | u64 i_inline_version; |
de57606c SW |
337 | u32 i_time_warp_seq; |
338 | ||
891f3f5a | 339 | unsigned long i_ceph_flags; |
fdd4e158 YZ |
340 | atomic64_t i_release_count; |
341 | atomic64_t i_ordered_count; | |
342 | atomic64_t i_complete_seq[2]; | |
de57606c | 343 | |
6c0f3af7 | 344 | struct ceph_dir_layout i_dir_layout; |
de57606c | 345 | struct ceph_file_layout i_layout; |
785892fe | 346 | struct ceph_file_layout i_cached_layout; // for async creates |
de57606c SW |
347 | char *i_symlink; |
348 | ||
349 | /* for dirs */ | |
9bbeab41 | 350 | struct timespec64 i_rctime; |
e7f72952 | 351 | u64 i_rbytes, i_rfiles, i_rsubdirs, i_rsnaps; |
de57606c | 352 | u64 i_files, i_subdirs; |
de57606c | 353 | |
fb18a575 LH |
354 | /* quotas */ |
355 | u64 i_max_bytes, i_max_files; | |
356 | ||
08796873 YZ |
357 | s32 i_dir_pin; |
358 | ||
de57606c | 359 | struct rb_root i_fragtree; |
1b1bc16d | 360 | int i_fragtree_nsplits; |
de57606c SW |
361 | struct mutex i_fragtree_mutex; |
362 | ||
363 | struct ceph_inode_xattrs_info i_xattrs; | |
364 | ||
be655596 | 365 | /* capabilities. protected _both_ by i_ceph_lock and cap->session's |
de57606c SW |
366 | * s_mutex. */ |
367 | struct rb_root i_caps; /* cap list */ | |
368 | struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ | |
369 | unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ | |
1cf03a68 JL |
370 | |
371 | /* | |
f1f565a2 | 372 | * Link to the auth cap's session's s_cap_dirty list. s_cap_dirty |
1cf03a68 JL |
373 | * is protected by the mdsc->cap_dirty_lock, but each individual item |
374 | * is also protected by the inode's i_ceph_lock. Walking s_cap_dirty | |
375 | * requires the mdsc->cap_dirty_lock. List presence for an item can | |
376 | * be tested under the i_ceph_lock. Changing anything requires both. | |
377 | */ | |
378 | struct list_head i_dirty_item; | |
379 | ||
380 | /* | |
829ad4db JL |
381 | * Link to session's s_cap_flushing list. Protected in a similar |
382 | * fashion to i_dirty_item, but also by the s_mutex for changes. The | |
383 | * s_cap_flushing list can be walked while holding either the s_mutex | |
384 | * or msdc->cap_dirty_lock. List presence can also be checked while | |
385 | * holding the i_ceph_lock for this inode. | |
1cf03a68 JL |
386 | */ |
387 | struct list_head i_flushing_item; | |
388 | ||
de57606c SW |
389 | /* we need to track cap writeback on a per-cap-bit basis, to allow |
390 | * overlapping, pipelined cap flushes to the mds. we can probably | |
391 | * reduce the tid to 8 bits if we're concerned about inode size. */ | |
f66fd9f0 | 392 | struct ceph_cap_flush *i_prealloc_cap_flush; |
e4500b5e | 393 | struct list_head i_cap_flush_list; |
de57606c | 394 | wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ |
de57606c SW |
395 | unsigned long i_hold_caps_max; /* jiffies */ |
396 | struct list_head i_cap_delay_list; /* for delayed cap release to mds */ | |
de57606c SW |
397 | struct ceph_cap_reservation i_cap_migration_resv; |
398 | struct list_head i_cap_snaps; /* snapped state pending flush to mds */ | |
7d8cb26d SW |
399 | struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or |
400 | dirty|flushing caps */ | |
de57606c SW |
401 | unsigned i_snap_caps; /* cap bits for snapped files */ |
402 | ||
719a2514 YZ |
403 | unsigned long i_last_rd; |
404 | unsigned long i_last_wr; | |
774a6a11 | 405 | int i_nr_by_mode[CEPH_FILE_MODE_BITS]; /* open file counts */ |
de57606c | 406 | |
b0d7c223 | 407 | struct mutex i_truncate_mutex; |
de57606c SW |
408 | u32 i_truncate_seq; /* last truncate to smaller size */ |
409 | u64 i_truncate_size; /* and the size we last truncated down to */ | |
410 | int i_truncate_pending; /* still need to call vmtruncate */ | |
411 | ||
412 | u64 i_max_size; /* max file size authorized by mds */ | |
413 | u64 i_reported_size; /* (max_)size reported to or requested of mds */ | |
414 | u64 i_wanted_max_size; /* offset we'd like to write too */ | |
415 | u64 i_requested_max_size; /* max_size we've requested */ | |
416 | ||
417 | /* held references to caps */ | |
418 | int i_pin_ref; | |
f85122af | 419 | int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref, i_fx_ref; |
de57606c | 420 | int i_wrbuffer_ref, i_wrbuffer_ref_head; |
89aa5930 | 421 | atomic_t i_filelock_ref; |
97aeb6bf | 422 | atomic_t i_shared_gen; /* increment each time we get FILE_SHARED */ |
cd045cb4 | 423 | u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ |
de57606c SW |
424 | u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ |
425 | ||
de57606c | 426 | struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ |
68cd5b4b | 427 | struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ |
de57606c SW |
428 | spinlock_t i_unsafe_lock; |
429 | ||
75c9627e YZ |
430 | union { |
431 | struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ | |
432 | struct ceph_snapid_map *i_snapid_map; /* snapid -> dev_t */ | |
433 | }; | |
de57606c SW |
434 | struct list_head i_snap_realm_item; |
435 | struct list_head i_snap_flush_item; | |
245ce991 | 436 | struct timespec64 i_btime; |
193e7b37 | 437 | struct timespec64 i_snap_btime; |
de57606c | 438 | |
1cf89a8d YZ |
439 | struct work_struct i_work; |
440 | unsigned long i_work_mask; | |
de57606c SW |
441 | }; |
442 | ||
721d5c13 JL |
443 | static inline struct ceph_inode_info * |
444 | ceph_inode(const struct inode *inode) | |
de57606c | 445 | { |
874c8ca1 | 446 | return container_of(inode, struct ceph_inode_info, netfs.inode); |
de57606c SW |
447 | } |
448 | ||
721d5c13 JL |
449 | static inline struct ceph_fs_client * |
450 | ceph_inode_to_client(const struct inode *inode) | |
ad1fee96 YS |
451 | { |
452 | return (struct ceph_fs_client *)inode->i_sb->s_fs_info; | |
453 | } | |
454 | ||
721d5c13 JL |
455 | static inline struct ceph_fs_client * |
456 | ceph_sb_to_client(const struct super_block *sb) | |
ad1fee96 YS |
457 | { |
458 | return (struct ceph_fs_client *)sb->s_fs_info; | |
459 | } | |
460 | ||
2678da88 XL |
461 | static inline struct ceph_mds_client * |
462 | ceph_sb_to_mdsc(const struct super_block *sb) | |
463 | { | |
464 | return (struct ceph_mds_client *)ceph_sb_to_client(sb)->mdsc; | |
465 | } | |
466 | ||
721d5c13 JL |
467 | static inline struct ceph_vino |
468 | ceph_vino(const struct inode *inode) | |
3d14c5d2 YS |
469 | { |
470 | return ceph_inode(inode)->i_vino; | |
471 | } | |
472 | ||
ebce3eb2 | 473 | static inline u32 ceph_ino_to_ino32(u64 vino) |
ad1fee96 | 474 | { |
3310f754 AO |
475 | u32 ino = vino & 0xffffffff; |
476 | ino ^= vino >> 32; | |
ad1fee96 | 477 | if (!ino) |
a661fc56 | 478 | ino = 2; |
ad1fee96 YS |
479 | return ino; |
480 | } | |
481 | ||
482 | /* | |
ebce3eb2 JL |
483 | * Inode numbers in cephfs are 64 bits, but inode->i_ino is 32-bits on |
484 | * some arches. We generally do not use this value inside the ceph driver, but | |
485 | * we do want to set it to something, so that generic vfs code has an | |
486 | * appropriate value for tracepoints and the like. | |
3d14c5d2 | 487 | */ |
ebce3eb2 | 488 | static inline ino_t ceph_vino_to_ino_t(struct ceph_vino vino) |
3d14c5d2 | 489 | { |
ebce3eb2 JL |
490 | if (sizeof(ino_t) == sizeof(u32)) |
491 | return ceph_ino_to_ino32(vino.ino); | |
3310f754 | 492 | return (ino_t)vino.ino; |
ad1fee96 | 493 | } |
ad1fee96 | 494 | |
3d14c5d2 YS |
495 | /* for printf-style formatting */ |
496 | #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap | |
497 | ||
498 | static inline u64 ceph_ino(struct inode *inode) | |
499 | { | |
500 | return ceph_inode(inode)->i_vino.ino; | |
501 | } | |
ebce3eb2 | 502 | |
3d14c5d2 YS |
503 | static inline u64 ceph_snap(struct inode *inode) |
504 | { | |
505 | return ceph_inode(inode)->i_vino.snap; | |
506 | } | |
507 | ||
ebce3eb2 JL |
508 | /** |
509 | * ceph_present_ino - format an inode number for presentation to userland | |
510 | * @sb: superblock where the inode lives | |
511 | * @ino: inode number to (possibly) convert | |
512 | * | |
513 | * If the user mounted with the ino32 option, then the 64-bit value needs | |
514 | * to be converted to something that can fit inside 32 bits. Note that | |
515 | * internal kernel code never uses this value, so this is entirely for | |
516 | * userland consumption. | |
517 | */ | |
518 | static inline u64 ceph_present_ino(struct super_block *sb, u64 ino) | |
519 | { | |
520 | if (unlikely(ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))) | |
521 | return ceph_ino_to_ino32(ino); | |
522 | return ino; | |
523 | } | |
524 | ||
525 | static inline u64 ceph_present_inode(struct inode *inode) | |
526 | { | |
527 | return ceph_present_ino(inode->i_sb, ceph_ino(inode)); | |
528 | } | |
529 | ||
3d14c5d2 YS |
530 | static inline int ceph_ino_compare(struct inode *inode, void *data) |
531 | { | |
532 | struct ceph_vino *pvino = (struct ceph_vino *)data; | |
533 | struct ceph_inode_info *ci = ceph_inode(inode); | |
534 | return ci->i_vino.ino == pvino->ino && | |
535 | ci->i_vino.snap == pvino->snap; | |
536 | } | |
537 | ||
d4f6b31d JL |
538 | /* |
539 | * The MDS reserves a set of inodes for its own usage. These should never | |
540 | * be accessible by clients, and so the MDS has no reason to ever hand these | |
541 | * out. The range is CEPH_MDS_INO_MDSDIR_OFFSET..CEPH_INO_SYSTEM_BASE. | |
542 | * | |
543 | * These come from src/mds/mdstypes.h in the ceph sources. | |
544 | */ | |
0078ea3b JL |
545 | #define CEPH_MAX_MDS 0x100 |
546 | #define CEPH_NUM_STRAY 10 | |
d4f6b31d | 547 | #define CEPH_MDS_INO_MDSDIR_OFFSET (1 * CEPH_MAX_MDS) |
0078ea3b | 548 | #define CEPH_MDS_INO_LOG_OFFSET (2 * CEPH_MAX_MDS) |
d4f6b31d JL |
549 | #define CEPH_INO_SYSTEM_BASE ((6*CEPH_MAX_MDS) + (CEPH_MAX_MDS * CEPH_NUM_STRAY)) |
550 | ||
551 | static inline bool ceph_vino_is_reserved(const struct ceph_vino vino) | |
552 | { | |
0078ea3b JL |
553 | if (vino.ino >= CEPH_INO_SYSTEM_BASE || |
554 | vino.ino < CEPH_MDS_INO_MDSDIR_OFFSET) | |
555 | return false; | |
556 | ||
557 | /* Don't warn on mdsdirs */ | |
558 | WARN_RATELIMIT(vino.ino >= CEPH_MDS_INO_LOG_OFFSET, | |
559 | "Attempt to access reserved inode number 0x%llx", | |
560 | vino.ino); | |
561 | return true; | |
d4f6b31d | 562 | } |
ebce3eb2 | 563 | |
3d14c5d2 YS |
564 | static inline struct inode *ceph_find_inode(struct super_block *sb, |
565 | struct ceph_vino vino) | |
566 | { | |
d4f6b31d JL |
567 | if (ceph_vino_is_reserved(vino)) |
568 | return NULL; | |
569 | ||
ebce3eb2 JL |
570 | /* |
571 | * NB: The hashval will be run through the fs/inode.c hash function | |
572 | * anyway, so there is no need to squash the inode number down to | |
573 | * 32-bits first. Just use low-order bits on arches with 32-bit long. | |
574 | */ | |
575 | return ilookup5(sb, (unsigned long)vino.ino, ceph_ino_compare, &vino); | |
3d14c5d2 YS |
576 | } |
577 | ||
578 | ||
579 | /* | |
580 | * Ceph inode. | |
581 | */ | |
10183a69 | 582 | #define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ |
10183a69 | 583 | #define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ |
daca8bda JL |
584 | #define CEPH_I_POOL_PERM (1 << 3) /* pool rd/wr bits are valid */ |
585 | #define CEPH_I_POOL_RD (1 << 4) /* can read from pool */ | |
586 | #define CEPH_I_POOL_WR (1 << 5) /* can write to pool */ | |
587 | #define CEPH_I_SEC_INITED (1 << 6) /* security initialized */ | |
c0e385b1 YZ |
588 | #define CEPH_I_KICK_FLUSH (1 << 7) /* kick flushing caps */ |
589 | #define CEPH_I_FLUSH_SNAPS (1 << 8) /* need flush snapss */ | |
590 | #define CEPH_I_ERROR_WRITE (1 << 9) /* have seen write errors */ | |
591 | #define CEPH_I_ERROR_FILELOCK (1 << 10) /* have seen file lock errors */ | |
592 | #define CEPH_I_ODIRECT (1 << 11) /* inode in direct I/O mode */ | |
593 | #define CEPH_ASYNC_CREATE_BIT (12) /* async create in flight for this */ | |
891f3f5a | 594 | #define CEPH_I_ASYNC_CREATE (1 << CEPH_ASYNC_CREATE_BIT) |
5d6451b1 | 595 | #define CEPH_I_SHUTDOWN (1 << 13) /* inode is no longer usable */ |
26544c62 | 596 | |
1cf89a8d YZ |
597 | /* |
598 | * Masks of ceph inode work. | |
599 | */ | |
a8810cdc JL |
600 | #define CEPH_I_WORK_WRITEBACK 0 |
601 | #define CEPH_I_WORK_INVALIDATE_PAGES 1 | |
602 | #define CEPH_I_WORK_VMTRUNCATE 2 | |
603 | #define CEPH_I_WORK_CHECK_CAPS 3 | |
604 | #define CEPH_I_WORK_FLUSH_SNAPS 4 | |
1cf89a8d | 605 | |
26544c62 JL |
606 | /* |
607 | * We set the ERROR_WRITE bit when we start seeing write errors on an inode | |
608 | * and then clear it when they start succeeding. Note that we do a lockless | |
609 | * check first, and only take the lock if it looks like it needs to be changed. | |
610 | * The write submission code just takes this as a hint, so we're not too | |
611 | * worried if a few slip through in either direction. | |
612 | */ | |
613 | static inline void ceph_set_error_write(struct ceph_inode_info *ci) | |
614 | { | |
615 | if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE)) { | |
616 | spin_lock(&ci->i_ceph_lock); | |
617 | ci->i_ceph_flags |= CEPH_I_ERROR_WRITE; | |
618 | spin_unlock(&ci->i_ceph_lock); | |
619 | } | |
620 | } | |
621 | ||
622 | static inline void ceph_clear_error_write(struct ceph_inode_info *ci) | |
623 | { | |
624 | if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE) { | |
625 | spin_lock(&ci->i_ceph_lock); | |
626 | ci->i_ceph_flags &= ~CEPH_I_ERROR_WRITE; | |
627 | spin_unlock(&ci->i_ceph_lock); | |
628 | } | |
629 | } | |
3d14c5d2 | 630 | |
2f276c51 | 631 | static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, |
fdd4e158 YZ |
632 | long long release_count, |
633 | long long ordered_count) | |
de57606c | 634 | { |
74960773 AP |
635 | /* |
636 | * Makes sure operations that setup readdir cache (update page | |
637 | * cache and i_size) are strongly ordered w.r.t. the following | |
638 | * atomic64_set() operations. | |
639 | */ | |
640 | smp_mb(); | |
fdd4e158 YZ |
641 | atomic64_set(&ci->i_complete_seq[0], release_count); |
642 | atomic64_set(&ci->i_complete_seq[1], ordered_count); | |
de57606c SW |
643 | } |
644 | ||
2f276c51 | 645 | static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) |
de57606c | 646 | { |
fdd4e158 YZ |
647 | atomic64_inc(&ci->i_release_count); |
648 | } | |
649 | ||
650 | static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) | |
651 | { | |
652 | atomic64_inc(&ci->i_ordered_count); | |
2f276c51 | 653 | } |
de57606c | 654 | |
2f276c51 YZ |
655 | static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) |
656 | { | |
fdd4e158 YZ |
657 | return atomic64_read(&ci->i_complete_seq[0]) == |
658 | atomic64_read(&ci->i_release_count); | |
de57606c SW |
659 | } |
660 | ||
70db4f36 YZ |
661 | static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) |
662 | { | |
fdd4e158 YZ |
663 | return atomic64_read(&ci->i_complete_seq[0]) == |
664 | atomic64_read(&ci->i_release_count) && | |
665 | atomic64_read(&ci->i_complete_seq[1]) == | |
666 | atomic64_read(&ci->i_ordered_count); | |
70db4f36 YZ |
667 | } |
668 | ||
2f276c51 | 669 | static inline void ceph_dir_clear_complete(struct inode *inode) |
de57606c | 670 | { |
2f276c51 YZ |
671 | __ceph_dir_clear_complete(ceph_inode(inode)); |
672 | } | |
de57606c | 673 | |
70db4f36 | 674 | static inline void ceph_dir_clear_ordered(struct inode *inode) |
2f276c51 | 675 | { |
fdd4e158 | 676 | __ceph_dir_clear_ordered(ceph_inode(inode)); |
de57606c SW |
677 | } |
678 | ||
70db4f36 YZ |
679 | static inline bool ceph_dir_is_complete_ordered(struct inode *inode) |
680 | { | |
fdd4e158 YZ |
681 | bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode)); |
682 | smp_rmb(); | |
70db4f36 YZ |
683 | return ret; |
684 | } | |
de57606c SW |
685 | |
686 | /* find a specific frag @f */ | |
687 | extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, | |
688 | u32 f); | |
689 | ||
690 | /* | |
691 | * choose fragment for value @v. copy frag content to pfrag, if leaf | |
692 | * exists | |
693 | */ | |
694 | extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, | |
695 | struct ceph_inode_frag *pfrag, | |
696 | int *found); | |
697 | ||
1e9c2eb6 | 698 | static inline struct ceph_dentry_info *ceph_dentry(const struct dentry *dentry) |
de57606c SW |
699 | { |
700 | return (struct ceph_dentry_info *)dentry->d_fsdata; | |
701 | } | |
702 | ||
de57606c SW |
703 | /* |
704 | * caps helpers | |
705 | */ | |
706 | static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) | |
707 | { | |
708 | return !RB_EMPTY_ROOT(&ci->i_caps); | |
709 | } | |
710 | ||
711 | extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); | |
712 | extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); | |
1af16d54 XL |
713 | extern int __ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, int mask, |
714 | int t); | |
de57606c SW |
715 | extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, |
716 | struct ceph_cap *cap); | |
717 | ||
718 | static inline int ceph_caps_issued(struct ceph_inode_info *ci) | |
719 | { | |
720 | int issued; | |
be655596 | 721 | spin_lock(&ci->i_ceph_lock); |
de57606c | 722 | issued = __ceph_caps_issued(ci, NULL); |
be655596 | 723 | spin_unlock(&ci->i_ceph_lock); |
de57606c SW |
724 | return issued; |
725 | } | |
726 | ||
1af16d54 XL |
727 | static inline int ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, |
728 | int mask, int touch) | |
de57606c SW |
729 | { |
730 | int r; | |
be655596 | 731 | spin_lock(&ci->i_ceph_lock); |
1af16d54 | 732 | r = __ceph_caps_issued_mask_metric(ci, mask, touch); |
be655596 | 733 | spin_unlock(&ci->i_ceph_lock); |
de57606c SW |
734 | return r; |
735 | } | |
736 | ||
737 | static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) | |
738 | { | |
739 | return ci->i_dirty_caps | ci->i_flushing_caps; | |
740 | } | |
f66fd9f0 YZ |
741 | extern struct ceph_cap_flush *ceph_alloc_cap_flush(void); |
742 | extern void ceph_free_cap_flush(struct ceph_cap_flush *cf); | |
743 | extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, | |
744 | struct ceph_cap_flush **pcf); | |
de57606c | 745 | |
9563f88c YZ |
746 | extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, |
747 | struct ceph_cap *ocap, int mask); | |
de57606c SW |
748 | extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); |
749 | extern int __ceph_caps_used(struct ceph_inode_info *ci); | |
750 | ||
719a2514 YZ |
751 | static inline bool __ceph_is_file_opened(struct ceph_inode_info *ci) |
752 | { | |
753 | return ci->i_nr_by_mode[0]; | |
754 | } | |
de57606c | 755 | extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); |
525d15e8 | 756 | extern int __ceph_caps_wanted(struct ceph_inode_info *ci); |
de57606c SW |
757 | |
758 | /* what the mds thinks we want */ | |
c1944fed | 759 | extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check); |
de57606c | 760 | |
37151668 YS |
761 | extern void ceph_caps_init(struct ceph_mds_client *mdsc); |
762 | extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); | |
fe33032d YZ |
763 | extern void ceph_adjust_caps_max_min(struct ceph_mds_client *mdsc, |
764 | struct ceph_mount_options *fsopt); | |
e30ee581 | 765 | extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, |
37151668 | 766 | struct ceph_cap_reservation *ctx, int need); |
7bf8f736 | 767 | extern void ceph_unreserve_caps(struct ceph_mds_client *mdsc, |
37151668 | 768 | struct ceph_cap_reservation *ctx); |
3d14c5d2 | 769 | extern void ceph_reservation_status(struct ceph_fs_client *client, |
de57606c | 770 | int *total, int *avail, int *used, |
85ccce43 | 771 | int *reserved, int *min); |
e19feff9 XL |
772 | extern void change_auth_cap_ses(struct ceph_inode_info *ci, |
773 | struct ceph_mds_session *session); | |
de57606c | 774 | |
de57606c | 775 | |
de57606c SW |
776 | |
777 | /* | |
778 | * we keep buffered readdir results attached to file->private_data | |
779 | */ | |
4918b6d1 | 780 | #define CEPH_F_SYNC 1 |
9cfa1098 | 781 | #define CEPH_F_ATEND 2 |
4918b6d1 | 782 | |
de57606c | 783 | struct ceph_file_info { |
252c6728 SW |
784 | short fmode; /* initialized on open */ |
785 | short flags; /* CEPH_F_* */ | |
de57606c | 786 | |
5d988308 YZ |
787 | spinlock_t rw_contexts_lock; |
788 | struct list_head rw_contexts; | |
f4b97866 | 789 | |
81f148a9 | 790 | u32 filp_gen; |
ff5d913d | 791 | atomic_t num_locks; |
bb48bd4d CX |
792 | }; |
793 | ||
794 | struct ceph_dir_file_info { | |
795 | struct ceph_file_info file_info; | |
5d988308 | 796 | |
de57606c SW |
797 | /* readdir: position within the dir */ |
798 | u32 frag; | |
799 | struct ceph_mds_request *last_readdir; | |
de57606c SW |
800 | |
801 | /* readdir: position within a frag */ | |
f0494206 | 802 | unsigned next_offset; /* offset of next chunk (last_name's + 1) */ |
de57606c | 803 | char *last_name; /* last entry in previous chunk */ |
fdd4e158 YZ |
804 | long long dir_release_count; |
805 | long long dir_ordered_count; | |
806 | int readdir_cache_idx; | |
de57606c SW |
807 | |
808 | /* used for -o dirstat read() on directory thing */ | |
809 | char *dir_info; | |
810 | int dir_info_len; | |
811 | }; | |
812 | ||
5d988308 YZ |
813 | struct ceph_rw_context { |
814 | struct list_head list; | |
815 | struct task_struct *thread; | |
816 | int caps; | |
817 | }; | |
818 | ||
819 | #define CEPH_DEFINE_RW_CONTEXT(_name, _caps) \ | |
820 | struct ceph_rw_context _name = { \ | |
821 | .thread = current, \ | |
822 | .caps = _caps, \ | |
823 | } | |
824 | ||
825 | static inline void ceph_add_rw_context(struct ceph_file_info *cf, | |
826 | struct ceph_rw_context *ctx) | |
827 | { | |
828 | spin_lock(&cf->rw_contexts_lock); | |
829 | list_add(&ctx->list, &cf->rw_contexts); | |
830 | spin_unlock(&cf->rw_contexts_lock); | |
831 | } | |
832 | ||
833 | static inline void ceph_del_rw_context(struct ceph_file_info *cf, | |
834 | struct ceph_rw_context *ctx) | |
835 | { | |
836 | spin_lock(&cf->rw_contexts_lock); | |
837 | list_del(&ctx->list); | |
838 | spin_unlock(&cf->rw_contexts_lock); | |
839 | } | |
840 | ||
841 | static inline struct ceph_rw_context* | |
842 | ceph_find_rw_context(struct ceph_file_info *cf) | |
843 | { | |
844 | struct ceph_rw_context *ctx, *found = NULL; | |
845 | spin_lock(&cf->rw_contexts_lock); | |
846 | list_for_each_entry(ctx, &cf->rw_contexts, list) { | |
847 | if (ctx->thread == current) { | |
848 | found = ctx; | |
849 | break; | |
850 | } | |
851 | } | |
852 | spin_unlock(&cf->rw_contexts_lock); | |
853 | return found; | |
854 | } | |
855 | ||
fdd4e158 YZ |
856 | struct ceph_readdir_cache_control { |
857 | struct page *page; | |
858 | struct dentry **dentries; | |
859 | int index; | |
860 | }; | |
de57606c | 861 | |
de57606c SW |
862 | /* |
863 | * A "snap realm" describes a subset of the file hierarchy sharing | |
864 | * the same set of snapshots that apply to it. The realms themselves | |
865 | * are organized into a hierarchy, such that children inherit (some of) | |
866 | * the snapshots of their parents. | |
867 | * | |
868 | * All inodes within the realm that have capabilities are linked into a | |
869 | * per-realm list. | |
870 | */ | |
871 | struct ceph_snap_realm { | |
872 | u64 ino; | |
e3161f17 | 873 | struct inode *inode; |
de57606c | 874 | atomic_t nref; |
a105f00c SW |
875 | struct rb_node node; |
876 | ||
de57606c SW |
877 | u64 created, seq; |
878 | u64 parent_ino; | |
879 | u64 parent_since; /* snapid when our current parent became so */ | |
880 | ||
881 | u64 *prior_parent_snaps; /* snaps inherited from any parents we */ | |
aa711ee3 | 882 | u32 num_prior_parent_snaps; /* had prior to parent_since */ |
de57606c | 883 | u64 *snaps; /* snaps specific to this realm */ |
aa711ee3 | 884 | u32 num_snaps; |
de57606c SW |
885 | |
886 | struct ceph_snap_realm *parent; | |
887 | struct list_head children; /* list of child realms */ | |
888 | struct list_head child_item; | |
889 | ||
890 | struct list_head empty_item; /* if i have ref==0 */ | |
891 | ||
ae00d4f3 SW |
892 | struct list_head dirty_item; /* if realm needs new context */ |
893 | ||
74a31df4 XL |
894 | struct list_head rebuild_item; /* rebuild snap realms _downward_ in hierarchy */ |
895 | ||
de57606c SW |
896 | /* the current set of snaps for this realm */ |
897 | struct ceph_snap_context *cached_context; | |
898 | ||
899 | struct list_head inodes_with_caps; | |
900 | spinlock_t inodes_with_caps_lock; | |
901 | }; | |
902 | ||
3d14c5d2 | 903 | static inline int default_congestion_kb(void) |
de57606c | 904 | { |
3d14c5d2 YS |
905 | int congestion_kb; |
906 | ||
907 | /* | |
908 | * Copied from NFS | |
909 | * | |
910 | * congestion size, scale with available memory. | |
911 | * | |
912 | * 64MB: 8192k | |
913 | * 128MB: 11585k | |
914 | * 256MB: 16384k | |
915 | * 512MB: 23170k | |
916 | * 1GB: 32768k | |
917 | * 2GB: 46340k | |
918 | * 4GB: 65536k | |
919 | * 8GB: 92681k | |
920 | * 16GB: 131072k | |
921 | * | |
922 | * This allows larger machines to have larger/more transfers. | |
923 | * Limit the default to 256M | |
924 | */ | |
ca79b0c2 | 925 | congestion_kb = (16*int_sqrt(totalram_pages())) << (PAGE_SHIFT-10); |
3d14c5d2 YS |
926 | if (congestion_kb > 256*1024) |
927 | congestion_kb = 256*1024; | |
928 | ||
929 | return congestion_kb; | |
de57606c SW |
930 | } |
931 | ||
932 | ||
d468e729 YZ |
933 | /* super.c */ |
934 | extern int ceph_force_reconnect(struct super_block *sb); | |
de57606c SW |
935 | /* snap.c */ |
936 | struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, | |
937 | u64 ino); | |
938 | extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, | |
939 | struct ceph_snap_realm *realm); | |
940 | extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, | |
941 | struct ceph_snap_realm *realm); | |
942 | extern int ceph_update_snap_trace(struct ceph_mds_client *m, | |
982d6011 YZ |
943 | void *p, void *e, bool deletion, |
944 | struct ceph_snap_realm **realm_ret); | |
0ba92e1c | 945 | void ceph_change_snap_realm(struct inode *inode, struct ceph_snap_realm *realm); |
de57606c | 946 | extern void ceph_handle_snap(struct ceph_mds_client *mdsc, |
2600d2dd | 947 | struct ceph_mds_session *session, |
de57606c | 948 | struct ceph_msg *msg); |
de57606c SW |
949 | extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, |
950 | struct ceph_cap_snap *capsnap); | |
5ed91587 | 951 | extern void ceph_cleanup_global_and_empty_realms(struct ceph_mds_client *mdsc); |
de57606c | 952 | |
75c9627e YZ |
953 | extern struct ceph_snapid_map *ceph_get_snapid_map(struct ceph_mds_client *mdsc, |
954 | u64 snap); | |
955 | extern void ceph_put_snapid_map(struct ceph_mds_client* mdsc, | |
956 | struct ceph_snapid_map *sm); | |
957 | extern void ceph_trim_snapid_map(struct ceph_mds_client *mdsc); | |
958 | extern void ceph_cleanup_snapid_map(struct ceph_mds_client *mdsc); | |
631ed4b0 | 959 | void ceph_umount_begin(struct super_block *sb); |
75c9627e YZ |
960 | |
961 | ||
de57606c SW |
962 | /* |
963 | * a cap_snap is "pending" if it is still awaiting an in-progress | |
964 | * sync write (that may/may not still update size, mtime, etc.). | |
965 | */ | |
966 | static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) | |
967 | { | |
968 | return !list_empty(&ci->i_cap_snaps) && | |
86056090 YZ |
969 | list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap, |
970 | ci_item)->writing; | |
de57606c SW |
971 | } |
972 | ||
de57606c | 973 | /* inode.c */ |
966c7160 JL |
974 | struct ceph_mds_reply_info_in; |
975 | struct ceph_mds_reply_dirfrag; | |
976 | ||
de57606c SW |
977 | extern const struct inode_operations ceph_file_iops; |
978 | ||
979 | extern struct inode *ceph_alloc_inode(struct super_block *sb); | |
87bc5b89 | 980 | extern void ceph_evict_inode(struct inode *inode); |
cfa6d412 | 981 | extern void ceph_free_inode(struct inode *inode); |
de57606c SW |
982 | |
983 | extern struct inode *ceph_get_inode(struct super_block *sb, | |
984 | struct ceph_vino vino); | |
985 | extern struct inode *ceph_get_snapdir(struct inode *parent); | |
986 | extern int ceph_fill_file_size(struct inode *inode, int issued, | |
987 | u32 truncate_seq, u64 truncate_size, u64 size); | |
988 | extern void ceph_fill_file_time(struct inode *inode, int issued, | |
9bbeab41 AB |
989 | u64 time_warp_seq, struct timespec64 *ctime, |
990 | struct timespec64 *mtime, | |
991 | struct timespec64 *atime); | |
966c7160 JL |
992 | extern int ceph_fill_inode(struct inode *inode, struct page *locked_page, |
993 | struct ceph_mds_reply_info_in *iinfo, | |
994 | struct ceph_mds_reply_dirfrag *dirinfo, | |
995 | struct ceph_mds_session *session, int cap_fmode, | |
996 | struct ceph_cap_reservation *caps_reservation); | |
de57606c | 997 | extern int ceph_fill_trace(struct super_block *sb, |
f5a03b08 | 998 | struct ceph_mds_request *req); |
de57606c SW |
999 | extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, |
1000 | struct ceph_mds_session *session); | |
1001 | ||
1002 | extern int ceph_inode_holds_cap(struct inode *inode, int mask); | |
1003 | ||
efb0ca76 | 1004 | extern bool ceph_inode_set_size(struct inode *inode, loff_t size); |
b415bf4f | 1005 | extern void __ceph_do_pending_vmtruncate(struct inode *inode); |
64f28c62 | 1006 | |
64f28c62 JL |
1007 | void ceph_queue_inode_work(struct inode *inode, int work_bit); |
1008 | ||
1009 | static inline void ceph_queue_vmtruncate(struct inode *inode) | |
1010 | { | |
1011 | ceph_queue_inode_work(inode, CEPH_I_WORK_VMTRUNCATE); | |
1012 | } | |
1013 | ||
1014 | static inline void ceph_queue_invalidate(struct inode *inode) | |
1015 | { | |
1016 | ceph_queue_inode_work(inode, CEPH_I_WORK_INVALIDATE_PAGES); | |
1017 | } | |
1018 | ||
1019 | static inline void ceph_queue_writeback(struct inode *inode) | |
1020 | { | |
1021 | ceph_queue_inode_work(inode, CEPH_I_WORK_WRITEBACK); | |
1022 | } | |
1023 | ||
a8810cdc JL |
1024 | static inline void ceph_queue_check_caps(struct inode *inode) |
1025 | { | |
1026 | ceph_queue_inode_work(inode, CEPH_I_WORK_CHECK_CAPS); | |
1027 | } | |
1028 | ||
1029 | static inline void ceph_queue_flush_snaps(struct inode *inode) | |
1030 | { | |
1031 | ceph_queue_inode_work(inode, CEPH_I_WORK_FLUSH_SNAPS); | |
1032 | } | |
1033 | ||
5eed80fb | 1034 | extern int ceph_try_to_choose_auth_mds(struct inode *inode, int mask); |
01deead0 YZ |
1035 | extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, |
1036 | int mask, bool force); | |
1037 | static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) | |
1038 | { | |
1039 | return __ceph_do_getattr(inode, NULL, mask, force); | |
1040 | } | |
549c7297 CB |
1041 | extern int ceph_permission(struct user_namespace *mnt_userns, |
1042 | struct inode *inode, int mask); | |
a26fecca | 1043 | extern int __ceph_setattr(struct inode *inode, struct iattr *attr); |
549c7297 CB |
1044 | extern int ceph_setattr(struct user_namespace *mnt_userns, |
1045 | struct dentry *dentry, struct iattr *attr); | |
1046 | extern int ceph_getattr(struct user_namespace *mnt_userns, | |
1047 | const struct path *path, struct kstat *stat, | |
a528d35e | 1048 | u32 request_mask, unsigned int flags); |
5d6451b1 JL |
1049 | void ceph_inode_shutdown(struct inode *inode); |
1050 | ||
1051 | static inline bool ceph_inode_is_shutdown(struct inode *inode) | |
1052 | { | |
1053 | unsigned long flags = READ_ONCE(ceph_inode(inode)->i_ceph_flags); | |
1054 | struct ceph_fs_client *fsc = ceph_inode_to_client(inode); | |
1055 | int state = READ_ONCE(fsc->mount_state); | |
1056 | ||
1057 | return (flags & CEPH_I_SHUTDOWN) || state >= CEPH_MOUNT_SHUTDOWN; | |
1058 | } | |
de57606c SW |
1059 | |
1060 | /* xattr.c */ | |
a26fecca | 1061 | int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); |
6ddf5f16 | 1062 | int ceph_do_getvxattr(struct inode *inode, const char *name, void *value, size_t size); |
7221fe4c | 1063 | ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); |
de57606c | 1064 | extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); |
12fe3dda | 1065 | extern struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci); |
de57606c | 1066 | extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); |
b1ee94aa | 1067 | extern const struct xattr_handler *ceph_xattr_handlers[]; |
de57606c | 1068 | |
5c31e92d YZ |
1069 | struct ceph_acl_sec_ctx { |
1070 | #ifdef CONFIG_CEPH_FS_POSIX_ACL | |
1071 | void *default_acl; | |
1072 | void *acl; | |
ac6713cc YZ |
1073 | #endif |
1074 | #ifdef CONFIG_CEPH_FS_SECURITY_LABEL | |
1075 | void *sec_ctx; | |
1076 | u32 sec_ctxlen; | |
5c31e92d YZ |
1077 | #endif |
1078 | struct ceph_pagelist *pagelist; | |
1079 | }; | |
1080 | ||
315f2408 YZ |
1081 | #ifdef CONFIG_SECURITY |
1082 | extern bool ceph_security_xattr_deadlock(struct inode *in); | |
1083 | extern bool ceph_security_xattr_wanted(struct inode *in); | |
1084 | #else | |
1085 | static inline bool ceph_security_xattr_deadlock(struct inode *in) | |
1086 | { | |
1087 | return false; | |
1088 | } | |
1089 | static inline bool ceph_security_xattr_wanted(struct inode *in) | |
1090 | { | |
1091 | return false; | |
1092 | } | |
1093 | #endif | |
1094 | ||
ac6713cc YZ |
1095 | #ifdef CONFIG_CEPH_FS_SECURITY_LABEL |
1096 | extern int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, | |
1097 | struct ceph_acl_sec_ctx *ctx); | |
668959a5 JL |
1098 | static inline void ceph_security_invalidate_secctx(struct inode *inode) |
1099 | { | |
1100 | security_inode_invalidate_secctx(inode); | |
1101 | } | |
ac6713cc YZ |
1102 | #else |
1103 | static inline int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, | |
1104 | struct ceph_acl_sec_ctx *ctx) | |
1105 | { | |
1106 | return 0; | |
1107 | } | |
1108 | static inline void ceph_security_invalidate_secctx(struct inode *inode) | |
1109 | { | |
1110 | } | |
1111 | #endif | |
1112 | ||
5c31e92d | 1113 | void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx); |
7221fe4c | 1114 | |
5c31e92d | 1115 | /* acl.c */ |
7221fe4c GZ |
1116 | #ifdef CONFIG_CEPH_FS_POSIX_ACL |
1117 | ||
0cad6246 | 1118 | struct posix_acl *ceph_get_acl(struct inode *, int, bool); |
549c7297 CB |
1119 | int ceph_set_acl(struct user_namespace *mnt_userns, |
1120 | struct inode *inode, struct posix_acl *acl, int type); | |
b1ee94aa | 1121 | int ceph_pre_init_acls(struct inode *dir, umode_t *mode, |
5c31e92d YZ |
1122 | struct ceph_acl_sec_ctx *as_ctx); |
1123 | void ceph_init_inode_acls(struct inode *inode, | |
1124 | struct ceph_acl_sec_ctx *as_ctx); | |
c969d9bf GZ |
1125 | |
1126 | static inline void ceph_forget_all_cached_acls(struct inode *inode) | |
1127 | { | |
1128 | forget_all_cached_acls(inode); | |
1129 | } | |
7221fe4c GZ |
1130 | |
1131 | #else | |
1132 | ||
1133 | #define ceph_get_acl NULL | |
72466d0b | 1134 | #define ceph_set_acl NULL |
7221fe4c | 1135 | |
b1ee94aa | 1136 | static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, |
5c31e92d | 1137 | struct ceph_acl_sec_ctx *as_ctx) |
7221fe4c GZ |
1138 | { |
1139 | return 0; | |
1140 | } | |
b1ee94aa | 1141 | static inline void ceph_init_inode_acls(struct inode *inode, |
5c31e92d | 1142 | struct ceph_acl_sec_ctx *as_ctx) |
b1ee94aa YZ |
1143 | { |
1144 | } | |
7221fe4c GZ |
1145 | static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) |
1146 | { | |
1147 | return 0; | |
1148 | } | |
1149 | ||
1150 | static inline void ceph_forget_all_cached_acls(struct inode *inode) | |
1151 | { | |
1152 | } | |
1153 | ||
1154 | #endif | |
1155 | ||
de57606c SW |
1156 | /* caps.c */ |
1157 | extern const char *ceph_cap_string(int c); | |
1158 | extern void ceph_handle_caps(struct ceph_mds_session *session, | |
1159 | struct ceph_msg *msg); | |
d9df2783 YZ |
1160 | extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, |
1161 | struct ceph_cap_reservation *ctx); | |
1162 | extern void ceph_add_cap(struct inode *inode, | |
1163 | struct ceph_mds_session *session, u64 cap_id, | |
135e671e | 1164 | unsigned issued, unsigned wanted, |
d9df2783 YZ |
1165 | unsigned cap, unsigned seq, u64 realmino, int flags, |
1166 | struct ceph_cap **new_cap); | |
a096b09a | 1167 | extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); |
a76d0a9c | 1168 | extern void ceph_remove_cap(struct ceph_cap *cap, bool queue_release); |
d6e47819 | 1169 | extern void __ceph_remove_caps(struct ceph_inode_info *ci); |
37151668 YS |
1170 | extern void ceph_put_cap(struct ceph_mds_client *mdsc, |
1171 | struct ceph_cap *cap); | |
9215aeea | 1172 | extern int ceph_is_any_caps(struct inode *inode); |
de57606c | 1173 | |
f1a3d572 | 1174 | extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); |
02c24a82 JB |
1175 | extern int ceph_fsync(struct file *file, loff_t start, loff_t end, |
1176 | int datasync); | |
e548e9b9 YZ |
1177 | extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, |
1178 | struct ceph_mds_session *session); | |
de57606c SW |
1179 | extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, |
1180 | struct ceph_mds_session *session); | |
e8a4d267 JL |
1181 | void ceph_kick_flushing_inode_caps(struct ceph_mds_session *session, |
1182 | struct ceph_inode_info *ci); | |
2bc50259 GF |
1183 | extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, |
1184 | int mds); | |
40dcf75e JL |
1185 | extern void ceph_take_cap_refs(struct ceph_inode_info *ci, int caps, |
1186 | bool snap_rwsem_locked); | |
de57606c SW |
1187 | extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); |
1188 | extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); | |
a8810cdc | 1189 | extern void ceph_put_cap_refs_async(struct ceph_inode_info *ci, int had); |
e64f44a8 XL |
1190 | extern void ceph_put_cap_refs_no_check_caps(struct ceph_inode_info *ci, |
1191 | int had); | |
de57606c SW |
1192 | extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, |
1193 | struct ceph_snap_context *snapc); | |
a6d37ccd XL |
1194 | extern void __ceph_remove_capsnap(struct inode *inode, |
1195 | struct ceph_cap_snap *capsnap, | |
1196 | bool *wake_ci, bool *wake_mdsc); | |
1197 | extern void ceph_remove_capsnap(struct inode *inode, | |
1198 | struct ceph_cap_snap *capsnap, | |
1199 | bool *wake_ci, bool *wake_mdsc); | |
ed9b430c YZ |
1200 | extern void ceph_flush_snaps(struct ceph_inode_info *ci, |
1201 | struct ceph_mds_session **psession); | |
efb0ca76 | 1202 | extern bool __ceph_should_report_size(struct ceph_inode_info *ci); |
de57606c SW |
1203 | extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, |
1204 | struct ceph_mds_session *session); | |
bf2ba432 | 1205 | extern unsigned long ceph_check_delayed_caps(struct ceph_mds_client *mdsc); |
afcdaea3 | 1206 | extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); |
6ef0bc6d | 1207 | extern int ceph_drop_caps_for_unlink(struct inode *inode); |
de57606c SW |
1208 | extern int ceph_encode_inode_release(void **p, struct inode *inode, |
1209 | int mds, int drop, int unless, int force); | |
1210 | extern int ceph_encode_dentry_release(void **p, struct dentry *dn, | |
ca6c8ae0 | 1211 | struct inode *dir, |
de57606c SW |
1212 | int mds, int drop, int unless); |
1213 | ||
5e3ded1b | 1214 | extern int ceph_get_caps(struct file *filp, int need, int want, |
e72968e1 | 1215 | loff_t endoff, int *got); |
5e3ded1b | 1216 | extern int ceph_try_get_caps(struct inode *inode, |
2ee9dd95 | 1217 | int need, int want, bool nonblock, int *got); |
de57606c SW |
1218 | |
1219 | /* for counting open files by mode */ | |
719a2514 YZ |
1220 | extern void ceph_get_fmode(struct ceph_inode_info *ci, int mode, int count); |
1221 | extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode, int count); | |
1222 | extern void __ceph_touch_fmode(struct ceph_inode_info *ci, | |
1223 | struct ceph_mds_client *mdsc, int fmode); | |
de57606c SW |
1224 | |
1225 | /* addr.c */ | |
1226 | extern const struct address_space_operations ceph_aops; | |
bc899ee1 | 1227 | extern const struct netfs_request_ops ceph_netfs_ops; |
de57606c | 1228 | extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); |
083db6fd | 1229 | extern int ceph_uninline_data(struct file *file); |
5e3ded1b | 1230 | extern int ceph_pool_perm_check(struct inode *inode, int need); |
10183a69 | 1231 | extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); |
36e6da98 | 1232 | int ceph_purge_inode_cap(struct inode *inode, struct ceph_cap *cap, bool *invalidate); |
de57606c | 1233 | |
48490776 XL |
1234 | static inline bool ceph_has_inline_data(struct ceph_inode_info *ci) |
1235 | { | |
1236 | if (ci->i_inline_version == CEPH_INLINE_NONE || | |
1237 | ci->i_inline_version == 1) /* initial version, no data */ | |
1238 | return false; | |
1239 | return true; | |
1240 | } | |
1241 | ||
de57606c SW |
1242 | /* file.c */ |
1243 | extern const struct file_operations ceph_file_fops; | |
9e0eb85d | 1244 | |
719a2514 | 1245 | extern int ceph_renew_caps(struct inode *inode, int fmode); |
de57606c | 1246 | extern int ceph_open(struct inode *inode, struct file *file); |
5ef50c3b | 1247 | extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, |
44907d79 | 1248 | struct file *file, unsigned flags, umode_t mode); |
de57606c | 1249 | extern int ceph_release(struct inode *inode, struct file *filp); |
31c542a1 YZ |
1250 | extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, |
1251 | char *data, size_t len); | |
55f2a045 | 1252 | |
de57606c SW |
1253 | /* dir.c */ |
1254 | extern const struct file_operations ceph_dir_fops; | |
38c48b5f | 1255 | extern const struct file_operations ceph_snapdir_fops; |
de57606c | 1256 | extern const struct inode_operations ceph_dir_iops; |
38c48b5f | 1257 | extern const struct inode_operations ceph_snapdir_iops; |
18fc8abd | 1258 | extern const struct dentry_operations ceph_dentry_ops; |
de57606c | 1259 | |
f3c4ebe6 | 1260 | extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order); |
de57606c | 1261 | extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); |
aa60cfc3 | 1262 | extern struct dentry *ceph_handle_snapdir(struct ceph_mds_request *req, |
7a971e2c | 1263 | struct dentry *dentry); |
de57606c SW |
1264 | extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, |
1265 | struct dentry *dentry, int err); | |
1266 | ||
37c4efc1 YZ |
1267 | extern void __ceph_dentry_lease_touch(struct ceph_dentry_info *di); |
1268 | extern void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di); | |
81a6cf2d | 1269 | extern void ceph_invalidate_dentry_lease(struct dentry *dentry); |
37c4efc1 | 1270 | extern int ceph_trim_dentries(struct ceph_mds_client *mdsc); |
e5f86dc3 | 1271 | extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); |
fdd4e158 | 1272 | extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl); |
de57606c | 1273 | |
de57606c SW |
1274 | /* ioctl.c */ |
1275 | extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
1276 | ||
1277 | /* export.c */ | |
1278 | extern const struct export_operations ceph_export_ops; | |
3886274a | 1279 | struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino); |
de57606c | 1280 | |
40819f6f | 1281 | /* locks.c */ |
eb13e832 | 1282 | extern __init void ceph_flock_init(void); |
40819f6f GF |
1283 | extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); |
1284 | extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); | |
1285 | extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); | |
39be95e9 JS |
1286 | extern int ceph_encode_locks_to_buffer(struct inode *inode, |
1287 | struct ceph_filelock *flocks, | |
1288 | int num_fcntl_locks, | |
1289 | int num_flock_locks); | |
1290 | extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, | |
1291 | struct ceph_pagelist *pagelist, | |
1292 | int num_fcntl_locks, int num_flock_locks); | |
40819f6f | 1293 | |
3d14c5d2 | 1294 | /* debugfs.c */ |
1a829ff2 | 1295 | extern void ceph_fs_debugfs_init(struct ceph_fs_client *client); |
3d14c5d2 YS |
1296 | extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); |
1297 | ||
fb18a575 | 1298 | /* quota.c */ |
55ab5520 LH |
1299 | |
1300 | enum quota_get_realm { | |
1301 | QUOTA_GET_MAX_FILES, | |
1302 | QUOTA_GET_MAX_BYTES, | |
1303 | QUOTA_GET_ANY | |
1304 | }; | |
1305 | ||
1306 | static inline bool __ceph_has_quota(struct ceph_inode_info *ci, | |
1307 | enum quota_get_realm which) | |
d557c48d | 1308 | { |
55ab5520 LH |
1309 | bool has_quota = false; |
1310 | ||
1311 | switch (which) { | |
1312 | case QUOTA_GET_MAX_BYTES: | |
1313 | has_quota = !!ci->i_max_bytes; | |
1314 | break; | |
1315 | case QUOTA_GET_MAX_FILES: | |
1316 | has_quota = !!ci->i_max_files; | |
1317 | break; | |
1318 | default: | |
1319 | has_quota = !!(ci->i_max_files || ci->i_max_bytes); | |
1320 | } | |
1321 | return has_quota; | |
d557c48d LH |
1322 | } |
1323 | ||
1324 | extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc); | |
1325 | ||
1326 | static inline void __ceph_update_quota(struct ceph_inode_info *ci, | |
1327 | u64 max_bytes, u64 max_files) | |
1328 | { | |
1329 | bool had_quota, has_quota; | |
55ab5520 | 1330 | had_quota = __ceph_has_quota(ci, QUOTA_GET_ANY); |
d557c48d LH |
1331 | ci->i_max_bytes = max_bytes; |
1332 | ci->i_max_files = max_files; | |
55ab5520 | 1333 | has_quota = __ceph_has_quota(ci, QUOTA_GET_ANY); |
d557c48d LH |
1334 | |
1335 | if (had_quota != has_quota) | |
874c8ca1 | 1336 | ceph_adjust_quota_realms_count(&ci->netfs.inode, has_quota); |
d557c48d LH |
1337 | } |
1338 | ||
fb18a575 LH |
1339 | extern void ceph_handle_quota(struct ceph_mds_client *mdsc, |
1340 | struct ceph_mds_session *session, | |
1341 | struct ceph_msg *msg); | |
b7a29217 | 1342 | extern bool ceph_quota_is_max_files_exceeded(struct inode *inode); |
6646ea1c | 1343 | extern bool ceph_quota_is_same_realm(struct inode *old, struct inode *new); |
2b83845f LH |
1344 | extern bool ceph_quota_is_max_bytes_exceeded(struct inode *inode, |
1345 | loff_t newlen); | |
1ab302a0 LH |
1346 | extern bool ceph_quota_is_max_bytes_approaching(struct inode *inode, |
1347 | loff_t newlen); | |
9122eed5 LH |
1348 | extern bool ceph_quota_update_statfs(struct ceph_fs_client *fsc, |
1349 | struct kstatfs *buf); | |
0c44a8e0 | 1350 | extern void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc); |
fb18a575 | 1351 | |
de57606c | 1352 | #endif /* _FS_CEPH_SUPER_H */ |