| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _FS_CEPH_SUPER_H |
| 3 | #define _FS_CEPH_SUPER_H |
| 4 | |
| 5 | #include <linux/ceph/ceph_debug.h> |
| 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> |
| 15 | #include <linux/writeback.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/posix_acl.h> |
| 18 | #include <linux/refcount.h> |
| 19 | #include <linux/security.h> |
| 20 | #include <linux/netfs.h> |
| 21 | #include <linux/fscache.h> |
| 22 | #include <linux/hashtable.h> |
| 23 | |
| 24 | #include <linux/ceph/libceph.h> |
| 25 | #include "crypto.h" |
| 26 | |
| 27 | /* large granularity for statfs utilization stats to facilitate |
| 28 | * large volume sizes on 32-bit machines. */ |
| 29 | #define CEPH_BLOCK_SHIFT 22 /* 4 MB */ |
| 30 | #define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) |
| 31 | #define CEPH_4K_BLOCK_SHIFT 12 /* 4 KB */ |
| 32 | |
| 33 | #define CEPH_MOUNT_OPT_CLEANRECOVER (1<<1) /* auto reonnect (clean mode) after blocklisted */ |
| 34 | #define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ |
| 35 | #define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ |
| 36 | #define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ |
| 37 | #define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ |
| 38 | #define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ |
| 39 | #define CEPH_MOUNT_OPT_FSCACHE (1<<10) /* use fscache */ |
| 40 | #define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11) /* no pool permission check */ |
| 41 | #define CEPH_MOUNT_OPT_MOUNTWAIT (1<<12) /* mount waits if no mds is up */ |
| 42 | #define CEPH_MOUNT_OPT_NOQUOTADF (1<<13) /* no root dir quota in statfs */ |
| 43 | #define CEPH_MOUNT_OPT_NOCOPYFROM (1<<14) /* don't use RADOS 'copy-from' op */ |
| 44 | #define CEPH_MOUNT_OPT_ASYNC_DIROPS (1<<15) /* allow async directory ops */ |
| 45 | #define CEPH_MOUNT_OPT_NOPAGECACHE (1<<16) /* bypass pagecache altogether */ |
| 46 | #define CEPH_MOUNT_OPT_SPARSEREAD (1<<17) /* always do sparse reads */ |
| 47 | |
| 48 | #define CEPH_MOUNT_OPT_DEFAULT \ |
| 49 | (CEPH_MOUNT_OPT_DCACHE | \ |
| 50 | CEPH_MOUNT_OPT_NOCOPYFROM | \ |
| 51 | CEPH_MOUNT_OPT_ASYNC_DIROPS) |
| 52 | |
| 53 | #define ceph_set_mount_opt(fsc, opt) \ |
| 54 | (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt |
| 55 | #define ceph_clear_mount_opt(fsc, opt) \ |
| 56 | (fsc)->mount_options->flags &= ~CEPH_MOUNT_OPT_##opt |
| 57 | #define ceph_test_mount_opt(fsc, opt) \ |
| 58 | (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) |
| 59 | |
| 60 | /* max size of osd read request, limited by libceph */ |
| 61 | #define CEPH_MAX_READ_SIZE CEPH_MSG_MAX_DATA_LEN |
| 62 | /* osd has a configurable limitaion of max write size. |
| 63 | * CEPH_MSG_MAX_DATA_LEN should be small enough. */ |
| 64 | #define CEPH_MAX_WRITE_SIZE CEPH_MSG_MAX_DATA_LEN |
| 65 | #define CEPH_RASIZE_DEFAULT (8192*1024) /* max readahead */ |
| 66 | #define CEPH_MAX_READDIR_DEFAULT 1024 |
| 67 | #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) |
| 68 | #define CEPH_SNAPDIRNAME_DEFAULT ".snap" |
| 69 | |
| 70 | /* |
| 71 | * Delay telling the MDS we no longer want caps, in case we reopen |
| 72 | * the file. Delay a minimum amount of time, even if we send a cap |
| 73 | * message for some other reason. Otherwise, take the oppotunity to |
| 74 | * update the mds to avoid sending another message later. |
| 75 | */ |
| 76 | #define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */ |
| 77 | #define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */ |
| 78 | |
| 79 | struct ceph_mount_options { |
| 80 | unsigned int flags; |
| 81 | |
| 82 | unsigned int wsize; /* max write size */ |
| 83 | unsigned int rsize; /* max read size */ |
| 84 | unsigned int rasize; /* max readahead */ |
| 85 | unsigned int congestion_kb; /* max writeback in flight */ |
| 86 | unsigned int caps_wanted_delay_min, caps_wanted_delay_max; |
| 87 | int caps_max; |
| 88 | unsigned int max_readdir; /* max readdir result (entries) */ |
| 89 | unsigned int max_readdir_bytes; /* max readdir result (bytes) */ |
| 90 | |
| 91 | bool new_dev_syntax; |
| 92 | |
| 93 | /* |
| 94 | * everything above this point can be memcmp'd; everything below |
| 95 | * is handled in compare_mount_options() |
| 96 | */ |
| 97 | |
| 98 | char *snapdir_name; /* default ".snap" */ |
| 99 | char *mds_namespace; /* default NULL */ |
| 100 | char *server_path; /* default NULL (means "/") */ |
| 101 | char *fscache_uniq; /* default NULL */ |
| 102 | char *mon_addr; |
| 103 | struct fscrypt_dummy_policy dummy_enc_policy; |
| 104 | }; |
| 105 | |
| 106 | /* mount state */ |
| 107 | enum { |
| 108 | CEPH_MOUNT_MOUNTING, |
| 109 | CEPH_MOUNT_MOUNTED, |
| 110 | CEPH_MOUNT_UNMOUNTING, |
| 111 | CEPH_MOUNT_UNMOUNTED, |
| 112 | CEPH_MOUNT_SHUTDOWN, |
| 113 | CEPH_MOUNT_RECOVER, |
| 114 | CEPH_MOUNT_FENCE_IO, |
| 115 | }; |
| 116 | |
| 117 | #define CEPH_ASYNC_CREATE_CONFLICT_BITS 8 |
| 118 | |
| 119 | struct ceph_fs_client { |
| 120 | struct super_block *sb; |
| 121 | |
| 122 | struct list_head metric_wakeup; |
| 123 | |
| 124 | struct ceph_mount_options *mount_options; |
| 125 | struct ceph_client *client; |
| 126 | |
| 127 | int mount_state; |
| 128 | |
| 129 | bool blocklisted; |
| 130 | |
| 131 | bool have_copy_from2; |
| 132 | |
| 133 | u32 filp_gen; |
| 134 | loff_t max_file_size; |
| 135 | |
| 136 | struct ceph_mds_client *mdsc; |
| 137 | |
| 138 | atomic_long_t writeback_count; |
| 139 | bool write_congested; |
| 140 | |
| 141 | struct workqueue_struct *inode_wq; |
| 142 | struct workqueue_struct *cap_wq; |
| 143 | |
| 144 | DECLARE_HASHTABLE(async_unlink_conflict, CEPH_ASYNC_CREATE_CONFLICT_BITS); |
| 145 | spinlock_t async_unlink_conflict_lock; |
| 146 | |
| 147 | #ifdef CONFIG_DEBUG_FS |
| 148 | struct dentry *debugfs_dentry_lru, *debugfs_caps; |
| 149 | struct dentry *debugfs_congestion_kb; |
| 150 | struct dentry *debugfs_bdi; |
| 151 | struct dentry *debugfs_mdsc, *debugfs_mdsmap; |
| 152 | struct dentry *debugfs_status; |
| 153 | struct dentry *debugfs_mds_sessions; |
| 154 | struct dentry *debugfs_metrics_dir; |
| 155 | #endif |
| 156 | |
| 157 | #ifdef CONFIG_CEPH_FSCACHE |
| 158 | struct fscache_volume *fscache; |
| 159 | #endif |
| 160 | #ifdef CONFIG_FS_ENCRYPTION |
| 161 | struct fscrypt_dummy_policy fsc_dummy_enc_policy; |
| 162 | #endif |
| 163 | }; |
| 164 | |
| 165 | /* |
| 166 | * File i/o capability. This tracks shared state with the metadata |
| 167 | * server that allows us to cache or writeback attributes or to read |
| 168 | * and write data. For any given inode, we should have one or more |
| 169 | * capabilities, one issued by each metadata server, and our |
| 170 | * cumulative access is the OR of all issued capabilities. |
| 171 | * |
| 172 | * Each cap is referenced by the inode's i_caps rbtree and by per-mds |
| 173 | * session capability lists. |
| 174 | */ |
| 175 | struct ceph_cap { |
| 176 | struct ceph_inode_info *ci; |
| 177 | struct rb_node ci_node; /* per-ci cap tree */ |
| 178 | struct ceph_mds_session *session; |
| 179 | struct list_head session_caps; /* per-session caplist */ |
| 180 | u64 cap_id; /* unique cap id (mds provided) */ |
| 181 | union { |
| 182 | /* in-use caps */ |
| 183 | struct { |
| 184 | int issued; /* latest, from the mds */ |
| 185 | int implemented; /* implemented superset of |
| 186 | issued (for revocation) */ |
| 187 | int mds; /* mds index for this cap */ |
| 188 | int mds_wanted; /* caps wanted from this mds */ |
| 189 | }; |
| 190 | /* caps to release */ |
| 191 | struct { |
| 192 | u64 cap_ino; |
| 193 | int queue_release; |
| 194 | }; |
| 195 | }; |
| 196 | u32 seq, issue_seq, mseq; |
| 197 | u32 cap_gen; /* active/stale cycle */ |
| 198 | unsigned long last_used; |
| 199 | struct list_head caps_item; |
| 200 | }; |
| 201 | |
| 202 | #define CHECK_CAPS_AUTHONLY 1 /* only check auth cap */ |
| 203 | #define CHECK_CAPS_FLUSH 2 /* flush any dirty caps */ |
| 204 | #define CHECK_CAPS_NOINVAL 4 /* don't invalidate pagecache */ |
| 205 | |
| 206 | struct ceph_cap_flush { |
| 207 | u64 tid; |
| 208 | int caps; |
| 209 | bool wake; /* wake up flush waiters when finish ? */ |
| 210 | bool is_capsnap; /* true means capsnap */ |
| 211 | struct list_head g_list; // global |
| 212 | struct list_head i_list; // per inode |
| 213 | }; |
| 214 | |
| 215 | /* |
| 216 | * Snapped cap state that is pending flush to mds. When a snapshot occurs, |
| 217 | * we first complete any in-process sync writes and writeback any dirty |
| 218 | * data before flushing the snapped state (tracked here) back to the MDS. |
| 219 | */ |
| 220 | struct ceph_cap_snap { |
| 221 | refcount_t nref; |
| 222 | struct list_head ci_item; |
| 223 | |
| 224 | struct ceph_cap_flush cap_flush; |
| 225 | |
| 226 | u64 follows; |
| 227 | int issued, dirty; |
| 228 | struct ceph_snap_context *context; |
| 229 | |
| 230 | umode_t mode; |
| 231 | kuid_t uid; |
| 232 | kgid_t gid; |
| 233 | |
| 234 | struct ceph_buffer *xattr_blob; |
| 235 | u64 xattr_version; |
| 236 | |
| 237 | u64 size; |
| 238 | u64 change_attr; |
| 239 | struct timespec64 mtime, atime, ctime, btime; |
| 240 | u64 time_warp_seq; |
| 241 | u64 truncate_size; |
| 242 | u32 truncate_seq; |
| 243 | int writing; /* a sync write is still in progress */ |
| 244 | int dirty_pages; /* dirty pages awaiting writeback */ |
| 245 | bool inline_data; |
| 246 | bool need_flush; |
| 247 | }; |
| 248 | |
| 249 | static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) |
| 250 | { |
| 251 | if (refcount_dec_and_test(&capsnap->nref)) { |
| 252 | if (capsnap->xattr_blob) |
| 253 | ceph_buffer_put(capsnap->xattr_blob); |
| 254 | kmem_cache_free(ceph_cap_snap_cachep, capsnap); |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | /* |
| 259 | * The frag tree describes how a directory is fragmented, potentially across |
| 260 | * multiple metadata servers. It is also used to indicate points where |
| 261 | * metadata authority is delegated, and whether/where metadata is replicated. |
| 262 | * |
| 263 | * A _leaf_ frag will be present in the i_fragtree IFF there is |
| 264 | * delegation info. That is, if mds >= 0 || ndist > 0. |
| 265 | */ |
| 266 | #define CEPH_MAX_DIRFRAG_REP 4 |
| 267 | |
| 268 | struct ceph_inode_frag { |
| 269 | struct rb_node node; |
| 270 | |
| 271 | /* fragtree state */ |
| 272 | u32 frag; |
| 273 | int split_by; /* i.e. 2^(split_by) children */ |
| 274 | |
| 275 | /* delegation and replication info */ |
| 276 | int mds; /* -1 if same authority as parent */ |
| 277 | int ndist; /* >0 if replicated */ |
| 278 | int dist[CEPH_MAX_DIRFRAG_REP]; |
| 279 | }; |
| 280 | |
| 281 | /* |
| 282 | * We cache inode xattrs as an encoded blob until they are first used, |
| 283 | * at which point we parse them into an rbtree. |
| 284 | */ |
| 285 | struct ceph_inode_xattr { |
| 286 | struct rb_node node; |
| 287 | |
| 288 | const char *name; |
| 289 | int name_len; |
| 290 | const char *val; |
| 291 | int val_len; |
| 292 | int dirty; |
| 293 | |
| 294 | int should_free_name; |
| 295 | int should_free_val; |
| 296 | }; |
| 297 | |
| 298 | /* |
| 299 | * Ceph dentry state |
| 300 | */ |
| 301 | struct ceph_dentry_info { |
| 302 | struct dentry *dentry; |
| 303 | struct ceph_mds_session *lease_session; |
| 304 | struct list_head lease_list; |
| 305 | struct hlist_node hnode; |
| 306 | unsigned long flags; |
| 307 | int lease_shared_gen; |
| 308 | u32 lease_gen; |
| 309 | u32 lease_seq; |
| 310 | unsigned long lease_renew_after, lease_renew_from; |
| 311 | unsigned long time; |
| 312 | u64 offset; |
| 313 | }; |
| 314 | |
| 315 | #define CEPH_DENTRY_REFERENCED (1 << 0) |
| 316 | #define CEPH_DENTRY_LEASE_LIST (1 << 1) |
| 317 | #define CEPH_DENTRY_SHRINK_LIST (1 << 2) |
| 318 | #define CEPH_DENTRY_PRIMARY_LINK (1 << 3) |
| 319 | #define CEPH_DENTRY_ASYNC_UNLINK_BIT (4) |
| 320 | #define CEPH_DENTRY_ASYNC_UNLINK (1 << CEPH_DENTRY_ASYNC_UNLINK_BIT) |
| 321 | #define CEPH_DENTRY_ASYNC_CREATE_BIT (5) |
| 322 | #define CEPH_DENTRY_ASYNC_CREATE (1 << CEPH_DENTRY_ASYNC_CREATE_BIT) |
| 323 | |
| 324 | struct ceph_inode_xattrs_info { |
| 325 | /* |
| 326 | * (still encoded) xattr blob. we avoid the overhead of parsing |
| 327 | * this until someone actually calls getxattr, etc. |
| 328 | * |
| 329 | * blob->vec.iov_len == 4 implies there are no xattrs; blob == |
| 330 | * NULL means we don't know. |
| 331 | */ |
| 332 | struct ceph_buffer *blob, *prealloc_blob; |
| 333 | |
| 334 | struct rb_root index; |
| 335 | bool dirty; |
| 336 | int count; |
| 337 | int names_size; |
| 338 | int vals_size; |
| 339 | u64 version, index_version; |
| 340 | }; |
| 341 | |
| 342 | /* |
| 343 | * Ceph inode. |
| 344 | */ |
| 345 | struct ceph_inode_info { |
| 346 | struct netfs_inode netfs; /* Netfslib context and vfs inode */ |
| 347 | struct ceph_vino i_vino; /* ceph ino + snap */ |
| 348 | |
| 349 | spinlock_t i_ceph_lock; |
| 350 | |
| 351 | u64 i_version; |
| 352 | u64 i_inline_version; |
| 353 | u32 i_time_warp_seq; |
| 354 | |
| 355 | unsigned long i_ceph_flags; |
| 356 | atomic64_t i_release_count; |
| 357 | atomic64_t i_ordered_count; |
| 358 | atomic64_t i_complete_seq[2]; |
| 359 | |
| 360 | struct ceph_dir_layout i_dir_layout; |
| 361 | struct ceph_file_layout i_layout; |
| 362 | struct ceph_file_layout i_cached_layout; // for async creates |
| 363 | char *i_symlink; |
| 364 | |
| 365 | /* for dirs */ |
| 366 | struct timespec64 i_rctime; |
| 367 | u64 i_rbytes, i_rfiles, i_rsubdirs, i_rsnaps; |
| 368 | u64 i_files, i_subdirs; |
| 369 | |
| 370 | /* quotas */ |
| 371 | u64 i_max_bytes, i_max_files; |
| 372 | |
| 373 | s32 i_dir_pin; |
| 374 | |
| 375 | struct rb_root i_fragtree; |
| 376 | int i_fragtree_nsplits; |
| 377 | struct mutex i_fragtree_mutex; |
| 378 | |
| 379 | struct ceph_inode_xattrs_info i_xattrs; |
| 380 | |
| 381 | /* capabilities. protected _both_ by i_ceph_lock and cap->session's |
| 382 | * s_mutex. */ |
| 383 | struct rb_root i_caps; /* cap list */ |
| 384 | struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ |
| 385 | unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ |
| 386 | |
| 387 | /* |
| 388 | * Link to the auth cap's session's s_cap_dirty list. s_cap_dirty |
| 389 | * is protected by the mdsc->cap_dirty_lock, but each individual item |
| 390 | * is also protected by the inode's i_ceph_lock. Walking s_cap_dirty |
| 391 | * requires the mdsc->cap_dirty_lock. List presence for an item can |
| 392 | * be tested under the i_ceph_lock. Changing anything requires both. |
| 393 | */ |
| 394 | struct list_head i_dirty_item; |
| 395 | |
| 396 | /* |
| 397 | * Link to session's s_cap_flushing list. Protected in a similar |
| 398 | * fashion to i_dirty_item, but also by the s_mutex for changes. The |
| 399 | * s_cap_flushing list can be walked while holding either the s_mutex |
| 400 | * or msdc->cap_dirty_lock. List presence can also be checked while |
| 401 | * holding the i_ceph_lock for this inode. |
| 402 | */ |
| 403 | struct list_head i_flushing_item; |
| 404 | |
| 405 | /* we need to track cap writeback on a per-cap-bit basis, to allow |
| 406 | * overlapping, pipelined cap flushes to the mds. we can probably |
| 407 | * reduce the tid to 8 bits if we're concerned about inode size. */ |
| 408 | struct ceph_cap_flush *i_prealloc_cap_flush; |
| 409 | struct list_head i_cap_flush_list; |
| 410 | wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ |
| 411 | unsigned long i_hold_caps_max; /* jiffies */ |
| 412 | struct list_head i_cap_delay_list; /* for delayed cap release to mds */ |
| 413 | struct ceph_cap_reservation i_cap_migration_resv; |
| 414 | struct list_head i_cap_snaps; /* snapped state pending flush to mds */ |
| 415 | struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or |
| 416 | dirty|flushing caps */ |
| 417 | unsigned i_snap_caps; /* cap bits for snapped files */ |
| 418 | |
| 419 | unsigned long i_last_rd; |
| 420 | unsigned long i_last_wr; |
| 421 | int i_nr_by_mode[CEPH_FILE_MODE_BITS]; /* open file counts */ |
| 422 | |
| 423 | struct mutex i_truncate_mutex; |
| 424 | u32 i_truncate_seq; /* last truncate to smaller size */ |
| 425 | u64 i_truncate_size; /* and the size we last truncated down to */ |
| 426 | int i_truncate_pending; /* still need to call vmtruncate */ |
| 427 | /* |
| 428 | * For none fscrypt case it equals to i_truncate_size or it will |
| 429 | * equals to fscrypt_file_size |
| 430 | */ |
| 431 | u64 i_truncate_pagecache_size; |
| 432 | |
| 433 | u64 i_max_size; /* max file size authorized by mds */ |
| 434 | u64 i_reported_size; /* (max_)size reported to or requested of mds */ |
| 435 | u64 i_wanted_max_size; /* offset we'd like to write too */ |
| 436 | u64 i_requested_max_size; /* max_size we've requested */ |
| 437 | |
| 438 | /* held references to caps */ |
| 439 | int i_pin_ref; |
| 440 | int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref, i_fx_ref; |
| 441 | int i_wrbuffer_ref, i_wrbuffer_ref_head; |
| 442 | atomic_t i_filelock_ref; |
| 443 | atomic_t i_shared_gen; /* increment each time we get FILE_SHARED */ |
| 444 | u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ |
| 445 | u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ |
| 446 | |
| 447 | struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ |
| 448 | struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ |
| 449 | spinlock_t i_unsafe_lock; |
| 450 | |
| 451 | union { |
| 452 | struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ |
| 453 | struct ceph_snapid_map *i_snapid_map; /* snapid -> dev_t */ |
| 454 | }; |
| 455 | struct list_head i_snap_realm_item; |
| 456 | struct list_head i_snap_flush_item; |
| 457 | struct timespec64 i_btime; |
| 458 | struct timespec64 i_snap_btime; |
| 459 | |
| 460 | struct work_struct i_work; |
| 461 | unsigned long i_work_mask; |
| 462 | |
| 463 | #ifdef CONFIG_FS_ENCRYPTION |
| 464 | u32 fscrypt_auth_len; |
| 465 | u32 fscrypt_file_len; |
| 466 | u8 *fscrypt_auth; |
| 467 | u8 *fscrypt_file; |
| 468 | #endif |
| 469 | }; |
| 470 | |
| 471 | struct ceph_netfs_request_data { |
| 472 | int caps; |
| 473 | |
| 474 | /* |
| 475 | * Maximum size of a file readahead request. |
| 476 | * The fadvise could update the bdi's default ra_pages. |
| 477 | */ |
| 478 | unsigned int file_ra_pages; |
| 479 | |
| 480 | /* Set it if fadvise disables file readahead entirely */ |
| 481 | bool file_ra_disabled; |
| 482 | }; |
| 483 | |
| 484 | static inline struct ceph_inode_info * |
| 485 | ceph_inode(const struct inode *inode) |
| 486 | { |
| 487 | return container_of(inode, struct ceph_inode_info, netfs.inode); |
| 488 | } |
| 489 | |
| 490 | static inline struct ceph_fs_client * |
| 491 | ceph_inode_to_client(const struct inode *inode) |
| 492 | { |
| 493 | return (struct ceph_fs_client *)inode->i_sb->s_fs_info; |
| 494 | } |
| 495 | |
| 496 | static inline struct ceph_fs_client * |
| 497 | ceph_sb_to_client(const struct super_block *sb) |
| 498 | { |
| 499 | return (struct ceph_fs_client *)sb->s_fs_info; |
| 500 | } |
| 501 | |
| 502 | static inline struct ceph_mds_client * |
| 503 | ceph_sb_to_mdsc(const struct super_block *sb) |
| 504 | { |
| 505 | return (struct ceph_mds_client *)ceph_sb_to_client(sb)->mdsc; |
| 506 | } |
| 507 | |
| 508 | static inline struct ceph_vino |
| 509 | ceph_vino(const struct inode *inode) |
| 510 | { |
| 511 | return ceph_inode(inode)->i_vino; |
| 512 | } |
| 513 | |
| 514 | static inline u32 ceph_ino_to_ino32(u64 vino) |
| 515 | { |
| 516 | u32 ino = vino & 0xffffffff; |
| 517 | ino ^= vino >> 32; |
| 518 | if (!ino) |
| 519 | ino = 2; |
| 520 | return ino; |
| 521 | } |
| 522 | |
| 523 | /* |
| 524 | * Inode numbers in cephfs are 64 bits, but inode->i_ino is 32-bits on |
| 525 | * some arches. We generally do not use this value inside the ceph driver, but |
| 526 | * we do want to set it to something, so that generic vfs code has an |
| 527 | * appropriate value for tracepoints and the like. |
| 528 | */ |
| 529 | static inline ino_t ceph_vino_to_ino_t(struct ceph_vino vino) |
| 530 | { |
| 531 | if (sizeof(ino_t) == sizeof(u32)) |
| 532 | return ceph_ino_to_ino32(vino.ino); |
| 533 | return (ino_t)vino.ino; |
| 534 | } |
| 535 | |
| 536 | /* for printf-style formatting */ |
| 537 | #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap |
| 538 | |
| 539 | static inline u64 ceph_ino(struct inode *inode) |
| 540 | { |
| 541 | return ceph_inode(inode)->i_vino.ino; |
| 542 | } |
| 543 | |
| 544 | static inline u64 ceph_snap(struct inode *inode) |
| 545 | { |
| 546 | return ceph_inode(inode)->i_vino.snap; |
| 547 | } |
| 548 | |
| 549 | /** |
| 550 | * ceph_present_ino - format an inode number for presentation to userland |
| 551 | * @sb: superblock where the inode lives |
| 552 | * @ino: inode number to (possibly) convert |
| 553 | * |
| 554 | * If the user mounted with the ino32 option, then the 64-bit value needs |
| 555 | * to be converted to something that can fit inside 32 bits. Note that |
| 556 | * internal kernel code never uses this value, so this is entirely for |
| 557 | * userland consumption. |
| 558 | */ |
| 559 | static inline u64 ceph_present_ino(struct super_block *sb, u64 ino) |
| 560 | { |
| 561 | if (unlikely(ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))) |
| 562 | return ceph_ino_to_ino32(ino); |
| 563 | return ino; |
| 564 | } |
| 565 | |
| 566 | static inline u64 ceph_present_inode(struct inode *inode) |
| 567 | { |
| 568 | return ceph_present_ino(inode->i_sb, ceph_ino(inode)); |
| 569 | } |
| 570 | |
| 571 | static inline int ceph_ino_compare(struct inode *inode, void *data) |
| 572 | { |
| 573 | struct ceph_vino *pvino = (struct ceph_vino *)data; |
| 574 | struct ceph_inode_info *ci = ceph_inode(inode); |
| 575 | return ci->i_vino.ino == pvino->ino && |
| 576 | ci->i_vino.snap == pvino->snap; |
| 577 | } |
| 578 | |
| 579 | /* |
| 580 | * The MDS reserves a set of inodes for its own usage. These should never |
| 581 | * be accessible by clients, and so the MDS has no reason to ever hand these |
| 582 | * out. The range is CEPH_MDS_INO_MDSDIR_OFFSET..CEPH_INO_SYSTEM_BASE. |
| 583 | * |
| 584 | * These come from src/mds/mdstypes.h in the ceph sources. |
| 585 | */ |
| 586 | #define CEPH_MAX_MDS 0x100 |
| 587 | #define CEPH_NUM_STRAY 10 |
| 588 | #define CEPH_MDS_INO_MDSDIR_OFFSET (1 * CEPH_MAX_MDS) |
| 589 | #define CEPH_MDS_INO_LOG_OFFSET (2 * CEPH_MAX_MDS) |
| 590 | #define CEPH_INO_SYSTEM_BASE ((6*CEPH_MAX_MDS) + (CEPH_MAX_MDS * CEPH_NUM_STRAY)) |
| 591 | |
| 592 | static inline bool ceph_vino_is_reserved(const struct ceph_vino vino) |
| 593 | { |
| 594 | if (vino.ino >= CEPH_INO_SYSTEM_BASE || |
| 595 | vino.ino < CEPH_MDS_INO_MDSDIR_OFFSET) |
| 596 | return false; |
| 597 | |
| 598 | /* Don't warn on mdsdirs */ |
| 599 | WARN_RATELIMIT(vino.ino >= CEPH_MDS_INO_LOG_OFFSET, |
| 600 | "Attempt to access reserved inode number 0x%llx", |
| 601 | vino.ino); |
| 602 | return true; |
| 603 | } |
| 604 | |
| 605 | static inline struct inode *ceph_find_inode(struct super_block *sb, |
| 606 | struct ceph_vino vino) |
| 607 | { |
| 608 | if (ceph_vino_is_reserved(vino)) |
| 609 | return NULL; |
| 610 | |
| 611 | /* |
| 612 | * NB: The hashval will be run through the fs/inode.c hash function |
| 613 | * anyway, so there is no need to squash the inode number down to |
| 614 | * 32-bits first. Just use low-order bits on arches with 32-bit long. |
| 615 | */ |
| 616 | return ilookup5(sb, (unsigned long)vino.ino, ceph_ino_compare, &vino); |
| 617 | } |
| 618 | |
| 619 | |
| 620 | /* |
| 621 | * Ceph inode. |
| 622 | */ |
| 623 | #define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ |
| 624 | #define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ |
| 625 | #define CEPH_I_POOL_PERM (1 << 3) /* pool rd/wr bits are valid */ |
| 626 | #define CEPH_I_POOL_RD (1 << 4) /* can read from pool */ |
| 627 | #define CEPH_I_POOL_WR (1 << 5) /* can write to pool */ |
| 628 | #define CEPH_I_SEC_INITED (1 << 6) /* security initialized */ |
| 629 | #define CEPH_I_KICK_FLUSH (1 << 7) /* kick flushing caps */ |
| 630 | #define CEPH_I_FLUSH_SNAPS (1 << 8) /* need flush snapss */ |
| 631 | #define CEPH_I_ERROR_WRITE (1 << 9) /* have seen write errors */ |
| 632 | #define CEPH_I_ERROR_FILELOCK (1 << 10) /* have seen file lock errors */ |
| 633 | #define CEPH_I_ODIRECT (1 << 11) /* inode in direct I/O mode */ |
| 634 | #define CEPH_ASYNC_CREATE_BIT (12) /* async create in flight for this */ |
| 635 | #define CEPH_I_ASYNC_CREATE (1 << CEPH_ASYNC_CREATE_BIT) |
| 636 | #define CEPH_I_SHUTDOWN (1 << 13) /* inode is no longer usable */ |
| 637 | #define CEPH_I_ASYNC_CHECK_CAPS (1 << 14) /* check caps immediately after async |
| 638 | creating finishes */ |
| 639 | |
| 640 | /* |
| 641 | * Masks of ceph inode work. |
| 642 | */ |
| 643 | #define CEPH_I_WORK_WRITEBACK 0 |
| 644 | #define CEPH_I_WORK_INVALIDATE_PAGES 1 |
| 645 | #define CEPH_I_WORK_VMTRUNCATE 2 |
| 646 | #define CEPH_I_WORK_CHECK_CAPS 3 |
| 647 | #define CEPH_I_WORK_FLUSH_SNAPS 4 |
| 648 | |
| 649 | /* |
| 650 | * We set the ERROR_WRITE bit when we start seeing write errors on an inode |
| 651 | * and then clear it when they start succeeding. Note that we do a lockless |
| 652 | * check first, and only take the lock if it looks like it needs to be changed. |
| 653 | * The write submission code just takes this as a hint, so we're not too |
| 654 | * worried if a few slip through in either direction. |
| 655 | */ |
| 656 | static inline void ceph_set_error_write(struct ceph_inode_info *ci) |
| 657 | { |
| 658 | if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE)) { |
| 659 | spin_lock(&ci->i_ceph_lock); |
| 660 | ci->i_ceph_flags |= CEPH_I_ERROR_WRITE; |
| 661 | spin_unlock(&ci->i_ceph_lock); |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | static inline void ceph_clear_error_write(struct ceph_inode_info *ci) |
| 666 | { |
| 667 | if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE) { |
| 668 | spin_lock(&ci->i_ceph_lock); |
| 669 | ci->i_ceph_flags &= ~CEPH_I_ERROR_WRITE; |
| 670 | spin_unlock(&ci->i_ceph_lock); |
| 671 | } |
| 672 | } |
| 673 | |
| 674 | static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, |
| 675 | long long release_count, |
| 676 | long long ordered_count) |
| 677 | { |
| 678 | /* |
| 679 | * Makes sure operations that setup readdir cache (update page |
| 680 | * cache and i_size) are strongly ordered w.r.t. the following |
| 681 | * atomic64_set() operations. |
| 682 | */ |
| 683 | smp_mb(); |
| 684 | atomic64_set(&ci->i_complete_seq[0], release_count); |
| 685 | atomic64_set(&ci->i_complete_seq[1], ordered_count); |
| 686 | } |
| 687 | |
| 688 | static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) |
| 689 | { |
| 690 | atomic64_inc(&ci->i_release_count); |
| 691 | } |
| 692 | |
| 693 | static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) |
| 694 | { |
| 695 | atomic64_inc(&ci->i_ordered_count); |
| 696 | } |
| 697 | |
| 698 | static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) |
| 699 | { |
| 700 | return atomic64_read(&ci->i_complete_seq[0]) == |
| 701 | atomic64_read(&ci->i_release_count); |
| 702 | } |
| 703 | |
| 704 | static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) |
| 705 | { |
| 706 | return atomic64_read(&ci->i_complete_seq[0]) == |
| 707 | atomic64_read(&ci->i_release_count) && |
| 708 | atomic64_read(&ci->i_complete_seq[1]) == |
| 709 | atomic64_read(&ci->i_ordered_count); |
| 710 | } |
| 711 | |
| 712 | static inline void ceph_dir_clear_complete(struct inode *inode) |
| 713 | { |
| 714 | __ceph_dir_clear_complete(ceph_inode(inode)); |
| 715 | } |
| 716 | |
| 717 | static inline void ceph_dir_clear_ordered(struct inode *inode) |
| 718 | { |
| 719 | __ceph_dir_clear_ordered(ceph_inode(inode)); |
| 720 | } |
| 721 | |
| 722 | static inline bool ceph_dir_is_complete_ordered(struct inode *inode) |
| 723 | { |
| 724 | bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode)); |
| 725 | smp_rmb(); |
| 726 | return ret; |
| 727 | } |
| 728 | |
| 729 | /* find a specific frag @f */ |
| 730 | extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, |
| 731 | u32 f); |
| 732 | |
| 733 | /* |
| 734 | * choose fragment for value @v. copy frag content to pfrag, if leaf |
| 735 | * exists |
| 736 | */ |
| 737 | extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, |
| 738 | struct ceph_inode_frag *pfrag, |
| 739 | int *found); |
| 740 | |
| 741 | static inline struct ceph_dentry_info *ceph_dentry(const struct dentry *dentry) |
| 742 | { |
| 743 | return (struct ceph_dentry_info *)dentry->d_fsdata; |
| 744 | } |
| 745 | |
| 746 | /* |
| 747 | * caps helpers |
| 748 | */ |
| 749 | static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) |
| 750 | { |
| 751 | return !RB_EMPTY_ROOT(&ci->i_caps); |
| 752 | } |
| 753 | |
| 754 | extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); |
| 755 | extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); |
| 756 | extern int __ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, int mask, |
| 757 | int t); |
| 758 | extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, |
| 759 | struct ceph_cap *cap); |
| 760 | |
| 761 | static inline int ceph_caps_issued(struct ceph_inode_info *ci) |
| 762 | { |
| 763 | int issued; |
| 764 | spin_lock(&ci->i_ceph_lock); |
| 765 | issued = __ceph_caps_issued(ci, NULL); |
| 766 | spin_unlock(&ci->i_ceph_lock); |
| 767 | return issued; |
| 768 | } |
| 769 | |
| 770 | static inline int ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, |
| 771 | int mask, int touch) |
| 772 | { |
| 773 | int r; |
| 774 | spin_lock(&ci->i_ceph_lock); |
| 775 | r = __ceph_caps_issued_mask_metric(ci, mask, touch); |
| 776 | spin_unlock(&ci->i_ceph_lock); |
| 777 | return r; |
| 778 | } |
| 779 | |
| 780 | static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) |
| 781 | { |
| 782 | return ci->i_dirty_caps | ci->i_flushing_caps; |
| 783 | } |
| 784 | extern struct ceph_cap_flush *ceph_alloc_cap_flush(void); |
| 785 | extern void ceph_free_cap_flush(struct ceph_cap_flush *cf); |
| 786 | extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, |
| 787 | struct ceph_cap_flush **pcf); |
| 788 | |
| 789 | extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, |
| 790 | struct ceph_cap *ocap, int mask); |
| 791 | extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); |
| 792 | extern int __ceph_caps_used(struct ceph_inode_info *ci); |
| 793 | |
| 794 | static inline bool __ceph_is_file_opened(struct ceph_inode_info *ci) |
| 795 | { |
| 796 | return ci->i_nr_by_mode[0]; |
| 797 | } |
| 798 | extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); |
| 799 | extern int __ceph_caps_wanted(struct ceph_inode_info *ci); |
| 800 | |
| 801 | /* what the mds thinks we want */ |
| 802 | extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check); |
| 803 | |
| 804 | extern void ceph_caps_init(struct ceph_mds_client *mdsc); |
| 805 | extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); |
| 806 | extern void ceph_adjust_caps_max_min(struct ceph_mds_client *mdsc, |
| 807 | struct ceph_mount_options *fsopt); |
| 808 | extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, |
| 809 | struct ceph_cap_reservation *ctx, int need); |
| 810 | extern void ceph_unreserve_caps(struct ceph_mds_client *mdsc, |
| 811 | struct ceph_cap_reservation *ctx); |
| 812 | extern void ceph_reservation_status(struct ceph_fs_client *client, |
| 813 | int *total, int *avail, int *used, |
| 814 | int *reserved, int *min); |
| 815 | extern void change_auth_cap_ses(struct ceph_inode_info *ci, |
| 816 | struct ceph_mds_session *session); |
| 817 | |
| 818 | |
| 819 | |
| 820 | /* |
| 821 | * we keep buffered readdir results attached to file->private_data |
| 822 | */ |
| 823 | #define CEPH_F_SYNC 1 |
| 824 | #define CEPH_F_ATEND 2 |
| 825 | |
| 826 | struct ceph_file_info { |
| 827 | short fmode; /* initialized on open */ |
| 828 | short flags; /* CEPH_F_* */ |
| 829 | |
| 830 | spinlock_t rw_contexts_lock; |
| 831 | struct list_head rw_contexts; |
| 832 | |
| 833 | u32 filp_gen; |
| 834 | }; |
| 835 | |
| 836 | struct ceph_dir_file_info { |
| 837 | struct ceph_file_info file_info; |
| 838 | |
| 839 | /* readdir: position within the dir */ |
| 840 | u32 frag; |
| 841 | struct ceph_mds_request *last_readdir; |
| 842 | |
| 843 | /* readdir: position within a frag */ |
| 844 | unsigned next_offset; /* offset of next chunk (last_name's + 1) */ |
| 845 | char *last_name; /* last entry in previous chunk */ |
| 846 | long long dir_release_count; |
| 847 | long long dir_ordered_count; |
| 848 | int readdir_cache_idx; |
| 849 | |
| 850 | /* used for -o dirstat read() on directory thing */ |
| 851 | char *dir_info; |
| 852 | int dir_info_len; |
| 853 | }; |
| 854 | |
| 855 | struct ceph_rw_context { |
| 856 | struct list_head list; |
| 857 | struct task_struct *thread; |
| 858 | int caps; |
| 859 | }; |
| 860 | |
| 861 | #define CEPH_DEFINE_RW_CONTEXT(_name, _caps) \ |
| 862 | struct ceph_rw_context _name = { \ |
| 863 | .thread = current, \ |
| 864 | .caps = _caps, \ |
| 865 | } |
| 866 | |
| 867 | static inline void ceph_add_rw_context(struct ceph_file_info *cf, |
| 868 | struct ceph_rw_context *ctx) |
| 869 | { |
| 870 | spin_lock(&cf->rw_contexts_lock); |
| 871 | list_add(&ctx->list, &cf->rw_contexts); |
| 872 | spin_unlock(&cf->rw_contexts_lock); |
| 873 | } |
| 874 | |
| 875 | static inline void ceph_del_rw_context(struct ceph_file_info *cf, |
| 876 | struct ceph_rw_context *ctx) |
| 877 | { |
| 878 | spin_lock(&cf->rw_contexts_lock); |
| 879 | list_del(&ctx->list); |
| 880 | spin_unlock(&cf->rw_contexts_lock); |
| 881 | } |
| 882 | |
| 883 | static inline struct ceph_rw_context* |
| 884 | ceph_find_rw_context(struct ceph_file_info *cf) |
| 885 | { |
| 886 | struct ceph_rw_context *ctx, *found = NULL; |
| 887 | spin_lock(&cf->rw_contexts_lock); |
| 888 | list_for_each_entry(ctx, &cf->rw_contexts, list) { |
| 889 | if (ctx->thread == current) { |
| 890 | found = ctx; |
| 891 | break; |
| 892 | } |
| 893 | } |
| 894 | spin_unlock(&cf->rw_contexts_lock); |
| 895 | return found; |
| 896 | } |
| 897 | |
| 898 | struct ceph_readdir_cache_control { |
| 899 | struct page *page; |
| 900 | struct dentry **dentries; |
| 901 | int index; |
| 902 | }; |
| 903 | |
| 904 | /* |
| 905 | * A "snap realm" describes a subset of the file hierarchy sharing |
| 906 | * the same set of snapshots that apply to it. The realms themselves |
| 907 | * are organized into a hierarchy, such that children inherit (some of) |
| 908 | * the snapshots of their parents. |
| 909 | * |
| 910 | * All inodes within the realm that have capabilities are linked into a |
| 911 | * per-realm list. |
| 912 | */ |
| 913 | struct ceph_snap_realm { |
| 914 | u64 ino; |
| 915 | struct inode *inode; |
| 916 | atomic_t nref; |
| 917 | struct rb_node node; |
| 918 | |
| 919 | u64 created, seq; |
| 920 | u64 parent_ino; |
| 921 | u64 parent_since; /* snapid when our current parent became so */ |
| 922 | |
| 923 | u64 *prior_parent_snaps; /* snaps inherited from any parents we */ |
| 924 | u32 num_prior_parent_snaps; /* had prior to parent_since */ |
| 925 | u64 *snaps; /* snaps specific to this realm */ |
| 926 | u32 num_snaps; |
| 927 | |
| 928 | struct ceph_snap_realm *parent; |
| 929 | struct list_head children; /* list of child realms */ |
| 930 | struct list_head child_item; |
| 931 | |
| 932 | struct list_head empty_item; /* if i have ref==0 */ |
| 933 | |
| 934 | struct list_head dirty_item; /* if realm needs new context */ |
| 935 | |
| 936 | struct list_head rebuild_item; /* rebuild snap realms _downward_ in hierarchy */ |
| 937 | |
| 938 | /* the current set of snaps for this realm */ |
| 939 | struct ceph_snap_context *cached_context; |
| 940 | |
| 941 | struct list_head inodes_with_caps; |
| 942 | spinlock_t inodes_with_caps_lock; |
| 943 | }; |
| 944 | |
| 945 | static inline int default_congestion_kb(void) |
| 946 | { |
| 947 | int congestion_kb; |
| 948 | |
| 949 | /* |
| 950 | * Copied from NFS |
| 951 | * |
| 952 | * congestion size, scale with available memory. |
| 953 | * |
| 954 | * 64MB: 8192k |
| 955 | * 128MB: 11585k |
| 956 | * 256MB: 16384k |
| 957 | * 512MB: 23170k |
| 958 | * 1GB: 32768k |
| 959 | * 2GB: 46340k |
| 960 | * 4GB: 65536k |
| 961 | * 8GB: 92681k |
| 962 | * 16GB: 131072k |
| 963 | * |
| 964 | * This allows larger machines to have larger/more transfers. |
| 965 | * Limit the default to 256M |
| 966 | */ |
| 967 | congestion_kb = (16*int_sqrt(totalram_pages())) << (PAGE_SHIFT-10); |
| 968 | if (congestion_kb > 256*1024) |
| 969 | congestion_kb = 256*1024; |
| 970 | |
| 971 | return congestion_kb; |
| 972 | } |
| 973 | |
| 974 | |
| 975 | /* super.c */ |
| 976 | extern int ceph_force_reconnect(struct super_block *sb); |
| 977 | /* snap.c */ |
| 978 | struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, |
| 979 | u64 ino); |
| 980 | extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, |
| 981 | struct ceph_snap_realm *realm); |
| 982 | extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, |
| 983 | struct ceph_snap_realm *realm); |
| 984 | extern int ceph_update_snap_trace(struct ceph_mds_client *m, |
| 985 | void *p, void *e, bool deletion, |
| 986 | struct ceph_snap_realm **realm_ret); |
| 987 | void ceph_change_snap_realm(struct inode *inode, struct ceph_snap_realm *realm); |
| 988 | extern void ceph_handle_snap(struct ceph_mds_client *mdsc, |
| 989 | struct ceph_mds_session *session, |
| 990 | struct ceph_msg *msg); |
| 991 | extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, |
| 992 | struct ceph_cap_snap *capsnap); |
| 993 | extern void ceph_cleanup_global_and_empty_realms(struct ceph_mds_client *mdsc); |
| 994 | |
| 995 | extern struct ceph_snapid_map *ceph_get_snapid_map(struct ceph_mds_client *mdsc, |
| 996 | u64 snap); |
| 997 | extern void ceph_put_snapid_map(struct ceph_mds_client* mdsc, |
| 998 | struct ceph_snapid_map *sm); |
| 999 | extern void ceph_trim_snapid_map(struct ceph_mds_client *mdsc); |
| 1000 | extern void ceph_cleanup_snapid_map(struct ceph_mds_client *mdsc); |
| 1001 | void ceph_umount_begin(struct super_block *sb); |
| 1002 | |
| 1003 | |
| 1004 | /* |
| 1005 | * a cap_snap is "pending" if it is still awaiting an in-progress |
| 1006 | * sync write (that may/may not still update size, mtime, etc.). |
| 1007 | */ |
| 1008 | static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) |
| 1009 | { |
| 1010 | return !list_empty(&ci->i_cap_snaps) && |
| 1011 | list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap, |
| 1012 | ci_item)->writing; |
| 1013 | } |
| 1014 | |
| 1015 | /* inode.c */ |
| 1016 | struct ceph_mds_reply_info_in; |
| 1017 | struct ceph_mds_reply_dirfrag; |
| 1018 | struct ceph_acl_sec_ctx; |
| 1019 | |
| 1020 | extern const struct inode_operations ceph_file_iops; |
| 1021 | |
| 1022 | extern struct inode *ceph_alloc_inode(struct super_block *sb); |
| 1023 | extern void ceph_evict_inode(struct inode *inode); |
| 1024 | extern void ceph_free_inode(struct inode *inode); |
| 1025 | |
| 1026 | struct inode *ceph_new_inode(struct inode *dir, struct dentry *dentry, |
| 1027 | umode_t *mode, struct ceph_acl_sec_ctx *as_ctx); |
| 1028 | void ceph_as_ctx_to_req(struct ceph_mds_request *req, |
| 1029 | struct ceph_acl_sec_ctx *as_ctx); |
| 1030 | |
| 1031 | extern struct inode *ceph_get_inode(struct super_block *sb, |
| 1032 | struct ceph_vino vino, |
| 1033 | struct inode *newino); |
| 1034 | extern struct inode *ceph_get_snapdir(struct inode *parent); |
| 1035 | extern int ceph_fill_file_size(struct inode *inode, int issued, |
| 1036 | u32 truncate_seq, u64 truncate_size, u64 size); |
| 1037 | extern void ceph_fill_file_time(struct inode *inode, int issued, |
| 1038 | u64 time_warp_seq, struct timespec64 *ctime, |
| 1039 | struct timespec64 *mtime, |
| 1040 | struct timespec64 *atime); |
| 1041 | extern int ceph_fill_inode(struct inode *inode, struct page *locked_page, |
| 1042 | struct ceph_mds_reply_info_in *iinfo, |
| 1043 | struct ceph_mds_reply_dirfrag *dirinfo, |
| 1044 | struct ceph_mds_session *session, int cap_fmode, |
| 1045 | struct ceph_cap_reservation *caps_reservation); |
| 1046 | extern int ceph_fill_trace(struct super_block *sb, |
| 1047 | struct ceph_mds_request *req); |
| 1048 | extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, |
| 1049 | struct ceph_mds_session *session); |
| 1050 | |
| 1051 | extern int ceph_inode_holds_cap(struct inode *inode, int mask); |
| 1052 | |
| 1053 | extern bool ceph_inode_set_size(struct inode *inode, loff_t size); |
| 1054 | extern void __ceph_do_pending_vmtruncate(struct inode *inode); |
| 1055 | |
| 1056 | void ceph_queue_inode_work(struct inode *inode, int work_bit); |
| 1057 | |
| 1058 | static inline void ceph_queue_vmtruncate(struct inode *inode) |
| 1059 | { |
| 1060 | ceph_queue_inode_work(inode, CEPH_I_WORK_VMTRUNCATE); |
| 1061 | } |
| 1062 | |
| 1063 | static inline void ceph_queue_invalidate(struct inode *inode) |
| 1064 | { |
| 1065 | ceph_queue_inode_work(inode, CEPH_I_WORK_INVALIDATE_PAGES); |
| 1066 | } |
| 1067 | |
| 1068 | static inline void ceph_queue_writeback(struct inode *inode) |
| 1069 | { |
| 1070 | ceph_queue_inode_work(inode, CEPH_I_WORK_WRITEBACK); |
| 1071 | } |
| 1072 | |
| 1073 | static inline void ceph_queue_check_caps(struct inode *inode) |
| 1074 | { |
| 1075 | ceph_queue_inode_work(inode, CEPH_I_WORK_CHECK_CAPS); |
| 1076 | } |
| 1077 | |
| 1078 | static inline void ceph_queue_flush_snaps(struct inode *inode) |
| 1079 | { |
| 1080 | ceph_queue_inode_work(inode, CEPH_I_WORK_FLUSH_SNAPS); |
| 1081 | } |
| 1082 | |
| 1083 | extern int ceph_try_to_choose_auth_mds(struct inode *inode, int mask); |
| 1084 | extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, |
| 1085 | int mask, bool force); |
| 1086 | static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) |
| 1087 | { |
| 1088 | return __ceph_do_getattr(inode, NULL, mask, force); |
| 1089 | } |
| 1090 | extern int ceph_permission(struct mnt_idmap *idmap, |
| 1091 | struct inode *inode, int mask); |
| 1092 | |
| 1093 | struct ceph_iattr { |
| 1094 | struct ceph_fscrypt_auth *fscrypt_auth; |
| 1095 | }; |
| 1096 | |
| 1097 | extern int __ceph_setattr(struct inode *inode, struct iattr *attr, |
| 1098 | struct ceph_iattr *cia); |
| 1099 | extern int ceph_setattr(struct mnt_idmap *idmap, |
| 1100 | struct dentry *dentry, struct iattr *attr); |
| 1101 | extern int ceph_getattr(struct mnt_idmap *idmap, |
| 1102 | const struct path *path, struct kstat *stat, |
| 1103 | u32 request_mask, unsigned int flags); |
| 1104 | void ceph_inode_shutdown(struct inode *inode); |
| 1105 | |
| 1106 | static inline bool ceph_inode_is_shutdown(struct inode *inode) |
| 1107 | { |
| 1108 | unsigned long flags = READ_ONCE(ceph_inode(inode)->i_ceph_flags); |
| 1109 | struct ceph_fs_client *fsc = ceph_inode_to_client(inode); |
| 1110 | int state = READ_ONCE(fsc->mount_state); |
| 1111 | |
| 1112 | return (flags & CEPH_I_SHUTDOWN) || state >= CEPH_MOUNT_SHUTDOWN; |
| 1113 | } |
| 1114 | |
| 1115 | /* xattr.c */ |
| 1116 | int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); |
| 1117 | int ceph_do_getvxattr(struct inode *inode, const char *name, void *value, size_t size); |
| 1118 | ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); |
| 1119 | extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); |
| 1120 | extern struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci); |
| 1121 | extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); |
| 1122 | extern const struct xattr_handler * const ceph_xattr_handlers[]; |
| 1123 | |
| 1124 | struct ceph_acl_sec_ctx { |
| 1125 | #ifdef CONFIG_CEPH_FS_POSIX_ACL |
| 1126 | void *default_acl; |
| 1127 | void *acl; |
| 1128 | #endif |
| 1129 | #ifdef CONFIG_CEPH_FS_SECURITY_LABEL |
| 1130 | void *sec_ctx; |
| 1131 | u32 sec_ctxlen; |
| 1132 | #endif |
| 1133 | #ifdef CONFIG_FS_ENCRYPTION |
| 1134 | struct ceph_fscrypt_auth *fscrypt_auth; |
| 1135 | #endif |
| 1136 | struct ceph_pagelist *pagelist; |
| 1137 | }; |
| 1138 | |
| 1139 | #ifdef CONFIG_SECURITY |
| 1140 | extern bool ceph_security_xattr_deadlock(struct inode *in); |
| 1141 | extern bool ceph_security_xattr_wanted(struct inode *in); |
| 1142 | #else |
| 1143 | static inline bool ceph_security_xattr_deadlock(struct inode *in) |
| 1144 | { |
| 1145 | return false; |
| 1146 | } |
| 1147 | static inline bool ceph_security_xattr_wanted(struct inode *in) |
| 1148 | { |
| 1149 | return false; |
| 1150 | } |
| 1151 | #endif |
| 1152 | |
| 1153 | #ifdef CONFIG_CEPH_FS_SECURITY_LABEL |
| 1154 | extern int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, |
| 1155 | struct ceph_acl_sec_ctx *ctx); |
| 1156 | static inline void ceph_security_invalidate_secctx(struct inode *inode) |
| 1157 | { |
| 1158 | security_inode_invalidate_secctx(inode); |
| 1159 | } |
| 1160 | #else |
| 1161 | static inline int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, |
| 1162 | struct ceph_acl_sec_ctx *ctx) |
| 1163 | { |
| 1164 | return 0; |
| 1165 | } |
| 1166 | static inline void ceph_security_invalidate_secctx(struct inode *inode) |
| 1167 | { |
| 1168 | } |
| 1169 | #endif |
| 1170 | |
| 1171 | void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx); |
| 1172 | |
| 1173 | /* acl.c */ |
| 1174 | #ifdef CONFIG_CEPH_FS_POSIX_ACL |
| 1175 | |
| 1176 | struct posix_acl *ceph_get_acl(struct inode *, int, bool); |
| 1177 | int ceph_set_acl(struct mnt_idmap *idmap, |
| 1178 | struct dentry *dentry, struct posix_acl *acl, int type); |
| 1179 | int ceph_pre_init_acls(struct inode *dir, umode_t *mode, |
| 1180 | struct ceph_acl_sec_ctx *as_ctx); |
| 1181 | void ceph_init_inode_acls(struct inode *inode, |
| 1182 | struct ceph_acl_sec_ctx *as_ctx); |
| 1183 | |
| 1184 | static inline void ceph_forget_all_cached_acls(struct inode *inode) |
| 1185 | { |
| 1186 | forget_all_cached_acls(inode); |
| 1187 | } |
| 1188 | |
| 1189 | #else |
| 1190 | |
| 1191 | #define ceph_get_acl NULL |
| 1192 | #define ceph_set_acl NULL |
| 1193 | |
| 1194 | static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, |
| 1195 | struct ceph_acl_sec_ctx *as_ctx) |
| 1196 | { |
| 1197 | return 0; |
| 1198 | } |
| 1199 | static inline void ceph_init_inode_acls(struct inode *inode, |
| 1200 | struct ceph_acl_sec_ctx *as_ctx) |
| 1201 | { |
| 1202 | } |
| 1203 | static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) |
| 1204 | { |
| 1205 | return 0; |
| 1206 | } |
| 1207 | |
| 1208 | static inline void ceph_forget_all_cached_acls(struct inode *inode) |
| 1209 | { |
| 1210 | } |
| 1211 | |
| 1212 | #endif |
| 1213 | |
| 1214 | /* caps.c */ |
| 1215 | extern const char *ceph_cap_string(int c); |
| 1216 | extern void ceph_handle_caps(struct ceph_mds_session *session, |
| 1217 | struct ceph_msg *msg); |
| 1218 | extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, |
| 1219 | struct ceph_cap_reservation *ctx); |
| 1220 | extern void ceph_add_cap(struct inode *inode, |
| 1221 | struct ceph_mds_session *session, u64 cap_id, |
| 1222 | unsigned issued, unsigned wanted, |
| 1223 | unsigned cap, unsigned seq, u64 realmino, int flags, |
| 1224 | struct ceph_cap **new_cap); |
| 1225 | extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); |
| 1226 | extern void ceph_remove_cap(struct ceph_cap *cap, bool queue_release); |
| 1227 | extern void __ceph_remove_caps(struct ceph_inode_info *ci); |
| 1228 | extern void ceph_put_cap(struct ceph_mds_client *mdsc, |
| 1229 | struct ceph_cap *cap); |
| 1230 | extern int ceph_is_any_caps(struct inode *inode); |
| 1231 | |
| 1232 | extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); |
| 1233 | extern int ceph_fsync(struct file *file, loff_t start, loff_t end, |
| 1234 | int datasync); |
| 1235 | extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, |
| 1236 | struct ceph_mds_session *session); |
| 1237 | extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, |
| 1238 | struct ceph_mds_session *session); |
| 1239 | void ceph_kick_flushing_inode_caps(struct ceph_mds_session *session, |
| 1240 | struct ceph_inode_info *ci); |
| 1241 | extern struct ceph_cap *__get_cap_for_mds(struct ceph_inode_info *ci, |
| 1242 | int mds); |
| 1243 | extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, |
| 1244 | int mds); |
| 1245 | extern void ceph_take_cap_refs(struct ceph_inode_info *ci, int caps, |
| 1246 | bool snap_rwsem_locked); |
| 1247 | extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); |
| 1248 | extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); |
| 1249 | extern void ceph_put_cap_refs_async(struct ceph_inode_info *ci, int had); |
| 1250 | extern void ceph_put_cap_refs_no_check_caps(struct ceph_inode_info *ci, |
| 1251 | int had); |
| 1252 | extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, |
| 1253 | struct ceph_snap_context *snapc); |
| 1254 | extern void __ceph_remove_capsnap(struct inode *inode, |
| 1255 | struct ceph_cap_snap *capsnap, |
| 1256 | bool *wake_ci, bool *wake_mdsc); |
| 1257 | extern void ceph_remove_capsnap(struct inode *inode, |
| 1258 | struct ceph_cap_snap *capsnap, |
| 1259 | bool *wake_ci, bool *wake_mdsc); |
| 1260 | extern void ceph_flush_snaps(struct ceph_inode_info *ci, |
| 1261 | struct ceph_mds_session **psession); |
| 1262 | extern bool __ceph_should_report_size(struct ceph_inode_info *ci); |
| 1263 | extern void ceph_check_caps(struct ceph_inode_info *ci, int flags); |
| 1264 | extern unsigned long ceph_check_delayed_caps(struct ceph_mds_client *mdsc); |
| 1265 | extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); |
| 1266 | extern int ceph_drop_caps_for_unlink(struct inode *inode); |
| 1267 | extern int ceph_encode_inode_release(void **p, struct inode *inode, |
| 1268 | int mds, int drop, int unless, int force); |
| 1269 | extern int ceph_encode_dentry_release(void **p, struct dentry *dn, |
| 1270 | struct inode *dir, |
| 1271 | int mds, int drop, int unless); |
| 1272 | |
| 1273 | extern int __ceph_get_caps(struct inode *inode, struct ceph_file_info *fi, |
| 1274 | int need, int want, loff_t endoff, int *got); |
| 1275 | extern int ceph_get_caps(struct file *filp, int need, int want, |
| 1276 | loff_t endoff, int *got); |
| 1277 | extern int ceph_try_get_caps(struct inode *inode, |
| 1278 | int need, int want, bool nonblock, int *got); |
| 1279 | |
| 1280 | /* for counting open files by mode */ |
| 1281 | extern void ceph_get_fmode(struct ceph_inode_info *ci, int mode, int count); |
| 1282 | extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode, int count); |
| 1283 | extern void __ceph_touch_fmode(struct ceph_inode_info *ci, |
| 1284 | struct ceph_mds_client *mdsc, int fmode); |
| 1285 | |
| 1286 | /* addr.c */ |
| 1287 | extern const struct address_space_operations ceph_aops; |
| 1288 | extern const struct netfs_request_ops ceph_netfs_ops; |
| 1289 | extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); |
| 1290 | extern int ceph_uninline_data(struct file *file); |
| 1291 | extern int ceph_pool_perm_check(struct inode *inode, int need); |
| 1292 | extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); |
| 1293 | int ceph_purge_inode_cap(struct inode *inode, struct ceph_cap *cap, bool *invalidate); |
| 1294 | |
| 1295 | static inline bool ceph_has_inline_data(struct ceph_inode_info *ci) |
| 1296 | { |
| 1297 | if (ci->i_inline_version == CEPH_INLINE_NONE || |
| 1298 | ci->i_inline_version == 1) /* initial version, no data */ |
| 1299 | return false; |
| 1300 | return true; |
| 1301 | } |
| 1302 | |
| 1303 | /* file.c */ |
| 1304 | extern const struct file_operations ceph_file_fops; |
| 1305 | |
| 1306 | extern int ceph_renew_caps(struct inode *inode, int fmode); |
| 1307 | extern int ceph_open(struct inode *inode, struct file *file); |
| 1308 | extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, |
| 1309 | struct file *file, unsigned flags, umode_t mode); |
| 1310 | extern ssize_t __ceph_sync_read(struct inode *inode, loff_t *ki_pos, |
| 1311 | struct iov_iter *to, int *retry_op, |
| 1312 | u64 *last_objver); |
| 1313 | extern int ceph_release(struct inode *inode, struct file *filp); |
| 1314 | extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, |
| 1315 | char *data, size_t len); |
| 1316 | |
| 1317 | /* dir.c */ |
| 1318 | extern const struct file_operations ceph_dir_fops; |
| 1319 | extern const struct file_operations ceph_snapdir_fops; |
| 1320 | extern const struct inode_operations ceph_dir_iops; |
| 1321 | extern const struct inode_operations ceph_snapdir_iops; |
| 1322 | extern const struct dentry_operations ceph_dentry_ops; |
| 1323 | |
| 1324 | extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order); |
| 1325 | extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); |
| 1326 | extern struct dentry *ceph_handle_snapdir(struct ceph_mds_request *req, |
| 1327 | struct dentry *dentry); |
| 1328 | extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, |
| 1329 | struct dentry *dentry, int err); |
| 1330 | |
| 1331 | extern void __ceph_dentry_lease_touch(struct ceph_dentry_info *di); |
| 1332 | extern void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di); |
| 1333 | extern void ceph_invalidate_dentry_lease(struct dentry *dentry); |
| 1334 | extern int ceph_trim_dentries(struct ceph_mds_client *mdsc); |
| 1335 | extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); |
| 1336 | extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl); |
| 1337 | |
| 1338 | /* ioctl.c */ |
| 1339 | extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
| 1340 | |
| 1341 | /* export.c */ |
| 1342 | extern const struct export_operations ceph_export_ops; |
| 1343 | struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino); |
| 1344 | |
| 1345 | /* locks.c */ |
| 1346 | extern __init void ceph_flock_init(void); |
| 1347 | extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); |
| 1348 | extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); |
| 1349 | extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); |
| 1350 | extern int ceph_encode_locks_to_buffer(struct inode *inode, |
| 1351 | struct ceph_filelock *flocks, |
| 1352 | int num_fcntl_locks, |
| 1353 | int num_flock_locks); |
| 1354 | extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, |
| 1355 | struct ceph_pagelist *pagelist, |
| 1356 | int num_fcntl_locks, int num_flock_locks); |
| 1357 | |
| 1358 | /* debugfs.c */ |
| 1359 | extern void ceph_fs_debugfs_init(struct ceph_fs_client *client); |
| 1360 | extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); |
| 1361 | |
| 1362 | /* quota.c */ |
| 1363 | |
| 1364 | enum quota_get_realm { |
| 1365 | QUOTA_GET_MAX_FILES, |
| 1366 | QUOTA_GET_MAX_BYTES, |
| 1367 | QUOTA_GET_ANY |
| 1368 | }; |
| 1369 | |
| 1370 | static inline bool __ceph_has_quota(struct ceph_inode_info *ci, |
| 1371 | enum quota_get_realm which) |
| 1372 | { |
| 1373 | bool has_quota = false; |
| 1374 | |
| 1375 | switch (which) { |
| 1376 | case QUOTA_GET_MAX_BYTES: |
| 1377 | has_quota = !!ci->i_max_bytes; |
| 1378 | break; |
| 1379 | case QUOTA_GET_MAX_FILES: |
| 1380 | has_quota = !!ci->i_max_files; |
| 1381 | break; |
| 1382 | default: |
| 1383 | has_quota = !!(ci->i_max_files || ci->i_max_bytes); |
| 1384 | } |
| 1385 | return has_quota; |
| 1386 | } |
| 1387 | |
| 1388 | extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc); |
| 1389 | |
| 1390 | static inline void __ceph_update_quota(struct ceph_inode_info *ci, |
| 1391 | u64 max_bytes, u64 max_files) |
| 1392 | { |
| 1393 | bool had_quota, has_quota; |
| 1394 | had_quota = __ceph_has_quota(ci, QUOTA_GET_ANY); |
| 1395 | ci->i_max_bytes = max_bytes; |
| 1396 | ci->i_max_files = max_files; |
| 1397 | has_quota = __ceph_has_quota(ci, QUOTA_GET_ANY); |
| 1398 | |
| 1399 | if (had_quota != has_quota) |
| 1400 | ceph_adjust_quota_realms_count(&ci->netfs.inode, has_quota); |
| 1401 | } |
| 1402 | |
| 1403 | extern void ceph_handle_quota(struct ceph_mds_client *mdsc, |
| 1404 | struct ceph_mds_session *session, |
| 1405 | struct ceph_msg *msg); |
| 1406 | extern bool ceph_quota_is_max_files_exceeded(struct inode *inode); |
| 1407 | extern bool ceph_quota_is_same_realm(struct inode *old, struct inode *new); |
| 1408 | extern bool ceph_quota_is_max_bytes_exceeded(struct inode *inode, |
| 1409 | loff_t newlen); |
| 1410 | extern bool ceph_quota_is_max_bytes_approaching(struct inode *inode, |
| 1411 | loff_t newlen); |
| 1412 | extern bool ceph_quota_update_statfs(struct ceph_fs_client *fsc, |
| 1413 | struct kstatfs *buf); |
| 1414 | extern void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc); |
| 1415 | |
| 1416 | bool ceph_inc_mds_stopping_blocker(struct ceph_mds_client *mdsc, |
| 1417 | struct ceph_mds_session *session); |
| 1418 | void ceph_dec_mds_stopping_blocker(struct ceph_mds_client *mdsc); |
| 1419 | bool ceph_inc_osd_stopping_blocker(struct ceph_mds_client *mdsc); |
| 1420 | void ceph_dec_osd_stopping_blocker(struct ceph_mds_client *mdsc); |
| 1421 | #endif /* _FS_CEPH_SUPER_H */ |