1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2de57606cSSage Weil #ifndef _FS_CEPH_SUPER_H 3de57606cSSage Weil #define _FS_CEPH_SUPER_H 4de57606cSSage Weil 53d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 6de57606cSSage Weil 7de57606cSSage Weil #include <asm/unaligned.h> 8de57606cSSage Weil #include <linux/backing-dev.h> 9de57606cSSage Weil #include <linux/completion.h> 10de57606cSSage Weil #include <linux/exportfs.h> 11de57606cSSage Weil #include <linux/fs.h> 12de57606cSSage Weil #include <linux/mempool.h> 13de57606cSSage Weil #include <linux/pagemap.h> 14de57606cSSage Weil #include <linux/wait.h> 15f1a3d572SStephen Rothwell #include <linux/writeback.h> 165a0e3ad6STejun Heo #include <linux/slab.h> 17c969d9bfSGuangliang Zhao #include <linux/posix_acl.h> 18805692d0SElena Reshetova #include <linux/refcount.h> 19de57606cSSage Weil 203d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 21de57606cSSage Weil 2299ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 2399ccbd22SMilosz Tanski #include <linux/fscache.h> 2499ccbd22SMilosz Tanski #endif 2599ccbd22SMilosz Tanski 26de57606cSSage Weil /* f_type in struct statfs */ 27de57606cSSage Weil #define CEPH_SUPER_MAGIC 0x00c36400 28de57606cSSage Weil 29de57606cSSage Weil /* large granularity for statfs utilization stats to facilitate 30de57606cSSage Weil * large volume sizes on 32-bit machines. */ 3192a49fb0SSage Weil #define CEPH_BLOCK_SHIFT 22 /* 4 MB */ 32de57606cSSage Weil #define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) 33de57606cSSage Weil 343d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ 353d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ 363d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ 37ad1fee96SYehuda Sadeh #define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ 38a40dc6ccSSage Weil #define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ 3999ccbd22SMilosz Tanski #define CEPH_MOUNT_OPT_FSCACHE (1<<10) /* use fscache */ 4010183a69SYan, Zheng #define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11) /* no pool permission check */ 41e9e427f0SYan, Zheng #define CEPH_MOUNT_OPT_MOUNTWAIT (1<<12) /* mount waits if no mds is up */ 429122eed5SLuis Henriques #define CEPH_MOUNT_OPT_NOQUOTADF (1<<13) /* no root dir quota in statfs */ 436a259382SSage Weil 44133e9156SYan, Zheng #define CEPH_MOUNT_OPT_DEFAULT CEPH_MOUNT_OPT_DCACHE 45de57606cSSage Weil 463d14c5d2SYehuda Sadeh #define ceph_set_mount_opt(fsc, opt) \ 473d14c5d2SYehuda Sadeh (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt; 483d14c5d2SYehuda Sadeh #define ceph_test_mount_opt(fsc, opt) \ 493d14c5d2SYehuda Sadeh (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) 50de57606cSSage Weil 51aa187926SYan, Zheng /* max size of osd read request, limited by libceph */ 52aa187926SYan, Zheng #define CEPH_MAX_READ_SIZE CEPH_MSG_MAX_DATA_LEN 5395cca2b4SYan, Zheng /* osd has a configurable limitaion of max write size. 5495cca2b4SYan, Zheng * CEPH_MSG_MAX_DATA_LEN should be small enough. */ 5595cca2b4SYan, Zheng #define CEPH_MAX_WRITE_SIZE CEPH_MSG_MAX_DATA_LEN 567c94ba27SAndreas Gerstmayr #define CEPH_RASIZE_DEFAULT (8192*1024) /* max readahead */ 573d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_DEFAULT 1024 583d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) 593d14c5d2SYehuda Sadeh #define CEPH_SNAPDIRNAME_DEFAULT ".snap" 60de57606cSSage Weil 614214fb15SYan, Zheng /* 624214fb15SYan, Zheng * Delay telling the MDS we no longer want caps, in case we reopen 634214fb15SYan, Zheng * the file. Delay a minimum amount of time, even if we send a cap 644214fb15SYan, Zheng * message for some other reason. Otherwise, take the oppotunity to 654214fb15SYan, Zheng * update the mds to avoid sending another message later. 664214fb15SYan, Zheng */ 674214fb15SYan, Zheng #define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */ 684214fb15SYan, Zheng #define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */ 694214fb15SYan, Zheng 703d14c5d2SYehuda Sadeh struct ceph_mount_options { 71de57606cSSage Weil int flags; 723d14c5d2SYehuda Sadeh int sb_flags; 733d14c5d2SYehuda Sadeh 7483817e35SSage Weil int wsize; /* max write size */ 7583817e35SSage Weil int rsize; /* max read size */ 7683817e35SSage Weil int rasize; /* max readahead */ 776e19a16eSSage Weil int congestion_kb; /* max writeback in flight */ 786e19a16eSSage Weil int caps_wanted_delay_min, caps_wanted_delay_max; 7923804d91SSage Weil int max_readdir; /* max readdir result (entires) */ 8023804d91SSage Weil int max_readdir_bytes; /* max readdir result (bytes) */ 813d14c5d2SYehuda Sadeh 823d14c5d2SYehuda Sadeh /* 833d14c5d2SYehuda Sadeh * everything above this point can be memcmp'd; everything below 843d14c5d2SYehuda Sadeh * is handled in compare_mount_options() 853d14c5d2SYehuda Sadeh */ 863d14c5d2SYehuda Sadeh 87de57606cSSage Weil char *snapdir_name; /* default ".snap" */ 88430afbadSYan, Zheng char *mds_namespace; /* default NULL */ 893f384954SYan, Zheng char *server_path; /* default "/" */ 901d8f8360SYan, Zheng char *fscache_uniq; /* default NULL */ 91de57606cSSage Weil }; 92de57606cSSage Weil 933d14c5d2SYehuda Sadeh struct ceph_fs_client { 94de57606cSSage Weil struct super_block *sb; 95de57606cSSage Weil 963d14c5d2SYehuda Sadeh struct ceph_mount_options *mount_options; 973d14c5d2SYehuda Sadeh struct ceph_client *client; 983d14c5d2SYehuda Sadeh 99de57606cSSage Weil unsigned long mount_state; 10085ccce43SSage Weil int min_caps; /* min caps i added */ 101719784baSChengguang Xu loff_t max_file_size; 10285ccce43SSage Weil 1033d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc; 104de57606cSSage Weil 105de57606cSSage Weil /* writeback */ 106de57606cSSage Weil mempool_t *wb_pagevec_pool; 107de57606cSSage Weil struct workqueue_struct *wb_wq; 108de57606cSSage Weil struct workqueue_struct *pg_inv_wq; 109de57606cSSage Weil struct workqueue_struct *trunc_wq; 1102baba250SYehuda Sadeh atomic_long_t writeback_count; 111de57606cSSage Weil 1120743304dSSage Weil #ifdef CONFIG_DEBUG_FS 1133d14c5d2SYehuda Sadeh struct dentry *debugfs_dentry_lru, *debugfs_caps; 1142baba250SYehuda Sadeh struct dentry *debugfs_congestion_kb; 11506edf046SSage Weil struct dentry *debugfs_bdi; 1163d14c5d2SYehuda Sadeh struct dentry *debugfs_mdsc, *debugfs_mdsmap; 11714ed9703SJohn Spray struct dentry *debugfs_mds_sessions; 1180743304dSSage Weil #endif 11999ccbd22SMilosz Tanski 12099ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 12199ccbd22SMilosz Tanski struct fscache_cookie *fscache; 12299ccbd22SMilosz Tanski #endif 123de57606cSSage Weil }; 124de57606cSSage Weil 1253d14c5d2SYehuda Sadeh 126de57606cSSage Weil /* 127de57606cSSage Weil * File i/o capability. This tracks shared state with the metadata 128de57606cSSage Weil * server that allows us to cache or writeback attributes or to read 129de57606cSSage Weil * and write data. For any given inode, we should have one or more 130de57606cSSage Weil * capabilities, one issued by each metadata server, and our 131de57606cSSage Weil * cumulative access is the OR of all issued capabilities. 132de57606cSSage Weil * 133de57606cSSage Weil * Each cap is referenced by the inode's i_caps rbtree and by per-mds 134de57606cSSage Weil * session capability lists. 135de57606cSSage Weil */ 136de57606cSSage Weil struct ceph_cap { 137de57606cSSage Weil struct ceph_inode_info *ci; 138de57606cSSage Weil struct rb_node ci_node; /* per-ci cap tree */ 139de57606cSSage Weil struct ceph_mds_session *session; 140de57606cSSage Weil struct list_head session_caps; /* per-session caplist */ 141de57606cSSage Weil u64 cap_id; /* unique cap id (mds provided) */ 142745a8e3bSYan, Zheng union { 143745a8e3bSYan, Zheng /* in-use caps */ 144745a8e3bSYan, Zheng struct { 145de57606cSSage Weil int issued; /* latest, from the mds */ 146745a8e3bSYan, Zheng int implemented; /* implemented superset of 147745a8e3bSYan, Zheng issued (for revocation) */ 148745a8e3bSYan, Zheng int mds, mds_wanted; 149745a8e3bSYan, Zheng }; 150745a8e3bSYan, Zheng /* caps to release */ 151745a8e3bSYan, Zheng struct { 152745a8e3bSYan, Zheng u64 cap_ino; 153745a8e3bSYan, Zheng int queue_release; 154745a8e3bSYan, Zheng }; 155745a8e3bSYan, Zheng }; 156685f9a5dSSage Weil u32 seq, issue_seq, mseq; 157685f9a5dSSage Weil u32 cap_gen; /* active/stale cycle */ 158de57606cSSage Weil unsigned long last_used; 159de57606cSSage Weil struct list_head caps_item; 160de57606cSSage Weil }; 161de57606cSSage Weil 162de57606cSSage Weil #define CHECK_CAPS_NODELAY 1 /* do not delay any further */ 163de57606cSSage Weil #define CHECK_CAPS_AUTHONLY 2 /* only check auth cap */ 164de57606cSSage Weil #define CHECK_CAPS_FLUSH 4 /* flush any dirty caps */ 165de57606cSSage Weil 1660e294387SYan, Zheng struct ceph_cap_flush { 1670e294387SYan, Zheng u64 tid; 1680e294387SYan, Zheng int caps; /* 0 means capsnap */ 169c8799fc4SYan, Zheng bool wake; /* wake up flush waiters when finish ? */ 1700e294387SYan, Zheng struct list_head g_list; // global 1710e294387SYan, Zheng struct list_head i_list; // per inode 1720e294387SYan, Zheng }; 1730e294387SYan, Zheng 174de57606cSSage Weil /* 175de57606cSSage Weil * Snapped cap state that is pending flush to mds. When a snapshot occurs, 176de57606cSSage Weil * we first complete any in-process sync writes and writeback any dirty 177de57606cSSage Weil * data before flushing the snapped state (tracked here) back to the MDS. 178de57606cSSage Weil */ 179de57606cSSage Weil struct ceph_cap_snap { 180805692d0SElena Reshetova refcount_t nref; 1810e294387SYan, Zheng struct list_head ci_item; 182de57606cSSage Weil 1830e294387SYan, Zheng struct ceph_cap_flush cap_flush; 1840e294387SYan, Zheng 1850e294387SYan, Zheng u64 follows; 186de57606cSSage Weil int issued, dirty; 187de57606cSSage Weil struct ceph_snap_context *context; 188de57606cSSage Weil 1895706b27dSAl Viro umode_t mode; 19005cb11c1SEric W. Biederman kuid_t uid; 19105cb11c1SEric W. Biederman kgid_t gid; 192de57606cSSage Weil 1934a625be4SSage Weil struct ceph_buffer *xattr_blob; 194de57606cSSage Weil u64 xattr_version; 195de57606cSSage Weil 196de57606cSSage Weil u64 size; 1979bbeab41SArnd Bergmann struct timespec64 mtime, atime, ctime; 198de57606cSSage Weil u64 time_warp_seq; 1995f743e45SYan, Zheng u64 truncate_size; 2005f743e45SYan, Zheng u32 truncate_seq; 201de57606cSSage Weil int writing; /* a sync write is still in progress */ 202de57606cSSage Weil int dirty_pages; /* dirty pages awaiting writeback */ 203e20d258dSYan, Zheng bool inline_data; 20486056090SYan, Zheng bool need_flush; 205de57606cSSage Weil }; 206de57606cSSage Weil 207de57606cSSage Weil static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) 208de57606cSSage Weil { 209805692d0SElena Reshetova if (refcount_dec_and_test(&capsnap->nref)) { 2104a625be4SSage Weil if (capsnap->xattr_blob) 2114a625be4SSage Weil ceph_buffer_put(capsnap->xattr_blob); 212de57606cSSage Weil kfree(capsnap); 213de57606cSSage Weil } 2144a625be4SSage Weil } 215de57606cSSage Weil 216de57606cSSage Weil /* 217de57606cSSage Weil * The frag tree describes how a directory is fragmented, potentially across 218de57606cSSage Weil * multiple metadata servers. It is also used to indicate points where 219de57606cSSage Weil * metadata authority is delegated, and whether/where metadata is replicated. 220de57606cSSage Weil * 221de57606cSSage Weil * A _leaf_ frag will be present in the i_fragtree IFF there is 222de57606cSSage Weil * delegation info. That is, if mds >= 0 || ndist > 0. 223de57606cSSage Weil */ 224de57606cSSage Weil #define CEPH_MAX_DIRFRAG_REP 4 225de57606cSSage Weil 226de57606cSSage Weil struct ceph_inode_frag { 227de57606cSSage Weil struct rb_node node; 228de57606cSSage Weil 229de57606cSSage Weil /* fragtree state */ 230de57606cSSage Weil u32 frag; 231de57606cSSage Weil int split_by; /* i.e. 2^(split_by) children */ 232de57606cSSage Weil 233de57606cSSage Weil /* delegation and replication info */ 234de57606cSSage Weil int mds; /* -1 if same authority as parent */ 235de57606cSSage Weil int ndist; /* >0 if replicated */ 236de57606cSSage Weil int dist[CEPH_MAX_DIRFRAG_REP]; 237de57606cSSage Weil }; 238de57606cSSage Weil 239de57606cSSage Weil /* 240de57606cSSage Weil * We cache inode xattrs as an encoded blob until they are first used, 241de57606cSSage Weil * at which point we parse them into an rbtree. 242de57606cSSage Weil */ 243de57606cSSage Weil struct ceph_inode_xattr { 244de57606cSSage Weil struct rb_node node; 245de57606cSSage Weil 246de57606cSSage Weil const char *name; 247de57606cSSage Weil int name_len; 248de57606cSSage Weil const char *val; 249de57606cSSage Weil int val_len; 250de57606cSSage Weil int dirty; 251de57606cSSage Weil 252de57606cSSage Weil int should_free_name; 253de57606cSSage Weil int should_free_val; 254de57606cSSage Weil }; 255de57606cSSage Weil 2563d14c5d2SYehuda Sadeh /* 2573d14c5d2SYehuda Sadeh * Ceph dentry state 2583d14c5d2SYehuda Sadeh */ 2593d14c5d2SYehuda Sadeh struct ceph_dentry_info { 2603d14c5d2SYehuda Sadeh struct ceph_mds_session *lease_session; 26197aeb6bfSYan, Zheng int lease_shared_gen; 26297aeb6bfSYan, Zheng u32 lease_gen; 2633d14c5d2SYehuda Sadeh u32 lease_seq; 2643d14c5d2SYehuda Sadeh unsigned long lease_renew_after, lease_renew_from; 2653d14c5d2SYehuda Sadeh struct list_head lru; 2663d14c5d2SYehuda Sadeh struct dentry *dentry; 2679b16f03cSMiklos Szeredi unsigned long time; 2683d14c5d2SYehuda Sadeh u64 offset; 2693d14c5d2SYehuda Sadeh }; 2703d14c5d2SYehuda Sadeh 271de57606cSSage Weil struct ceph_inode_xattrs_info { 272de57606cSSage Weil /* 273de57606cSSage Weil * (still encoded) xattr blob. we avoid the overhead of parsing 274de57606cSSage Weil * this until someone actually calls getxattr, etc. 275de57606cSSage Weil * 276de57606cSSage Weil * blob->vec.iov_len == 4 implies there are no xattrs; blob == 277de57606cSSage Weil * NULL means we don't know. 278de57606cSSage Weil */ 279de57606cSSage Weil struct ceph_buffer *blob, *prealloc_blob; 280de57606cSSage Weil 281de57606cSSage Weil struct rb_root index; 282de57606cSSage Weil bool dirty; 283de57606cSSage Weil int count; 284de57606cSSage Weil int names_size; 285de57606cSSage Weil int vals_size; 286de57606cSSage Weil u64 version, index_version; 287de57606cSSage Weil }; 288de57606cSSage Weil 289de57606cSSage Weil /* 290de57606cSSage Weil * Ceph inode. 291de57606cSSage Weil */ 292de57606cSSage Weil struct ceph_inode_info { 293de57606cSSage Weil struct ceph_vino i_vino; /* ceph ino + snap */ 294de57606cSSage Weil 295be655596SSage Weil spinlock_t i_ceph_lock; 296be655596SSage Weil 297de57606cSSage Weil u64 i_version; 29831c542a1SYan, Zheng u64 i_inline_version; 299de57606cSSage Weil u32 i_time_warp_seq; 300de57606cSSage Weil 301de57606cSSage Weil unsigned i_ceph_flags; 302fdd4e158SYan, Zheng atomic64_t i_release_count; 303fdd4e158SYan, Zheng atomic64_t i_ordered_count; 304fdd4e158SYan, Zheng atomic64_t i_complete_seq[2]; 305de57606cSSage Weil 3066c0f3af7SSage Weil struct ceph_dir_layout i_dir_layout; 307de57606cSSage Weil struct ceph_file_layout i_layout; 308de57606cSSage Weil char *i_symlink; 309de57606cSSage Weil 310de57606cSSage Weil /* for dirs */ 3119bbeab41SArnd Bergmann struct timespec64 i_rctime; 312de57606cSSage Weil u64 i_rbytes, i_rfiles, i_rsubdirs; 313de57606cSSage Weil u64 i_files, i_subdirs; 314de57606cSSage Weil 315fb18a575SLuis Henriques /* quotas */ 316fb18a575SLuis Henriques u64 i_max_bytes, i_max_files; 317fb18a575SLuis Henriques 318de57606cSSage Weil struct rb_root i_fragtree; 3191b1bc16dSYan, Zheng int i_fragtree_nsplits; 320de57606cSSage Weil struct mutex i_fragtree_mutex; 321de57606cSSage Weil 322de57606cSSage Weil struct ceph_inode_xattrs_info i_xattrs; 323de57606cSSage Weil 324be655596SSage Weil /* capabilities. protected _both_ by i_ceph_lock and cap->session's 325de57606cSSage Weil * s_mutex. */ 326de57606cSSage Weil struct rb_root i_caps; /* cap list */ 327de57606cSSage Weil struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ 328de57606cSSage Weil unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ 329de57606cSSage Weil struct list_head i_dirty_item, i_flushing_item; 330de57606cSSage Weil /* we need to track cap writeback on a per-cap-bit basis, to allow 331de57606cSSage Weil * overlapping, pipelined cap flushes to the mds. we can probably 332de57606cSSage Weil * reduce the tid to 8 bits if we're concerned about inode size. */ 333f66fd9f0SYan, Zheng struct ceph_cap_flush *i_prealloc_cap_flush; 334e4500b5eSYan, Zheng struct list_head i_cap_flush_list; 335de57606cSSage Weil wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ 336de57606cSSage Weil unsigned long i_hold_caps_min; /* jiffies */ 337de57606cSSage Weil unsigned long i_hold_caps_max; /* jiffies */ 338de57606cSSage Weil struct list_head i_cap_delay_list; /* for delayed cap release to mds */ 339de57606cSSage Weil struct ceph_cap_reservation i_cap_migration_resv; 340de57606cSSage Weil struct list_head i_cap_snaps; /* snapped state pending flush to mds */ 3417d8cb26dSSage Weil struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or 3427d8cb26dSSage Weil dirty|flushing caps */ 343de57606cSSage Weil unsigned i_snap_caps; /* cap bits for snapped files */ 344de57606cSSage Weil 345774a6a11SYan, Zheng int i_nr_by_mode[CEPH_FILE_MODE_BITS]; /* open file counts */ 346de57606cSSage Weil 347b0d7c223SYan, Zheng struct mutex i_truncate_mutex; 348de57606cSSage Weil u32 i_truncate_seq; /* last truncate to smaller size */ 349de57606cSSage Weil u64 i_truncate_size; /* and the size we last truncated down to */ 350de57606cSSage Weil int i_truncate_pending; /* still need to call vmtruncate */ 351de57606cSSage Weil 352de57606cSSage Weil u64 i_max_size; /* max file size authorized by mds */ 353de57606cSSage Weil u64 i_reported_size; /* (max_)size reported to or requested of mds */ 354de57606cSSage Weil u64 i_wanted_max_size; /* offset we'd like to write too */ 355de57606cSSage Weil u64 i_requested_max_size; /* max_size we've requested */ 356de57606cSSage Weil 357de57606cSSage Weil /* held references to caps */ 358de57606cSSage Weil int i_pin_ref; 359d3d0720dSHenry C Chang int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref; 360de57606cSSage Weil int i_wrbuffer_ref, i_wrbuffer_ref_head; 36189aa5930SYan, Zheng atomic_t i_filelock_ref; 36297aeb6bfSYan, Zheng atomic_t i_shared_gen; /* increment each time we get FILE_SHARED */ 363cd045cb4SSage Weil u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ 364de57606cSSage Weil u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ 365de57606cSSage Weil 366de57606cSSage Weil struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ 36768cd5b4bSYan, Zheng struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ 368de57606cSSage Weil spinlock_t i_unsafe_lock; 369de57606cSSage Weil 370de57606cSSage Weil struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ 371de57606cSSage Weil int i_snap_realm_counter; /* snap realm (if caps) */ 372de57606cSSage Weil struct list_head i_snap_realm_item; 373de57606cSSage Weil struct list_head i_snap_flush_item; 374de57606cSSage Weil 375de57606cSSage Weil struct work_struct i_wb_work; /* writeback work */ 376de57606cSSage Weil struct work_struct i_pg_inv_work; /* page invalidation work */ 377de57606cSSage Weil 378de57606cSSage Weil struct work_struct i_vmtruncate_work; 379de57606cSSage Weil 38099ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 38199ccbd22SMilosz Tanski struct fscache_cookie *fscache; 382f7f7e7a0SYan, Zheng u32 i_fscache_gen; 38399ccbd22SMilosz Tanski #endif 384de57606cSSage Weil struct inode vfs_inode; /* at end */ 385de57606cSSage Weil }; 386de57606cSSage Weil 387de57606cSSage Weil static inline struct ceph_inode_info *ceph_inode(struct inode *inode) 388de57606cSSage Weil { 389fbbccec9SNoah Watkins return container_of(inode, struct ceph_inode_info, vfs_inode); 390de57606cSSage Weil } 391de57606cSSage Weil 392ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode) 393ad1fee96SYehuda Sadeh { 394ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)inode->i_sb->s_fs_info; 395ad1fee96SYehuda Sadeh } 396ad1fee96SYehuda Sadeh 397ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb) 398ad1fee96SYehuda Sadeh { 399ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)sb->s_fs_info; 400ad1fee96SYehuda Sadeh } 401ad1fee96SYehuda Sadeh 4023d14c5d2SYehuda Sadeh static inline struct ceph_vino ceph_vino(struct inode *inode) 4033d14c5d2SYehuda Sadeh { 4043d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino; 4053d14c5d2SYehuda Sadeh } 4063d14c5d2SYehuda Sadeh 4073d14c5d2SYehuda Sadeh /* 4083d14c5d2SYehuda Sadeh * ino_t is <64 bits on many architectures, blech. 4093d14c5d2SYehuda Sadeh * 410ad1fee96SYehuda Sadeh * i_ino (kernel inode) st_ino (userspace) 411ad1fee96SYehuda Sadeh * i386 32 32 412ad1fee96SYehuda Sadeh * x86_64+ino32 64 32 413ad1fee96SYehuda Sadeh * x86_64 64 64 414ad1fee96SYehuda Sadeh */ 4153310f754SAmon Ott static inline u32 ceph_ino_to_ino32(__u64 vino) 416ad1fee96SYehuda Sadeh { 4173310f754SAmon Ott u32 ino = vino & 0xffffffff; 4183310f754SAmon Ott ino ^= vino >> 32; 419ad1fee96SYehuda Sadeh if (!ino) 420a661fc56SAmon Ott ino = 2; 421ad1fee96SYehuda Sadeh return ino; 422ad1fee96SYehuda Sadeh } 423ad1fee96SYehuda Sadeh 424ad1fee96SYehuda Sadeh /* 425ad1fee96SYehuda Sadeh * kernel i_ino value 4263d14c5d2SYehuda Sadeh */ 4273d14c5d2SYehuda Sadeh static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) 4283d14c5d2SYehuda Sadeh { 4293d14c5d2SYehuda Sadeh #if BITS_PER_LONG == 32 4303310f754SAmon Ott return ceph_ino_to_ino32(vino.ino); 4313310f754SAmon Ott #else 4323310f754SAmon Ott return (ino_t)vino.ino; 4333d14c5d2SYehuda Sadeh #endif 4343d14c5d2SYehuda Sadeh } 4353d14c5d2SYehuda Sadeh 436ad1fee96SYehuda Sadeh /* 437ad1fee96SYehuda Sadeh * user-visible ino (stat, filldir) 438ad1fee96SYehuda Sadeh */ 439ad1fee96SYehuda Sadeh #if BITS_PER_LONG == 32 440ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 441ad1fee96SYehuda Sadeh { 442ad1fee96SYehuda Sadeh return ino; 443ad1fee96SYehuda Sadeh } 444ad1fee96SYehuda Sadeh #else 445ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 446ad1fee96SYehuda Sadeh { 447ad1fee96SYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32)) 448ad1fee96SYehuda Sadeh ino = ceph_ino_to_ino32(ino); 449ad1fee96SYehuda Sadeh return ino; 450ad1fee96SYehuda Sadeh } 451ad1fee96SYehuda Sadeh #endif 452ad1fee96SYehuda Sadeh 453ad1fee96SYehuda Sadeh 4543d14c5d2SYehuda Sadeh /* for printf-style formatting */ 4553d14c5d2SYehuda Sadeh #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap 4563d14c5d2SYehuda Sadeh 4573d14c5d2SYehuda Sadeh static inline u64 ceph_ino(struct inode *inode) 4583d14c5d2SYehuda Sadeh { 4593d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.ino; 4603d14c5d2SYehuda Sadeh } 4613d14c5d2SYehuda Sadeh static inline u64 ceph_snap(struct inode *inode) 4623d14c5d2SYehuda Sadeh { 4633d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.snap; 4643d14c5d2SYehuda Sadeh } 4653d14c5d2SYehuda Sadeh 4663d14c5d2SYehuda Sadeh static inline int ceph_ino_compare(struct inode *inode, void *data) 4673d14c5d2SYehuda Sadeh { 4683d14c5d2SYehuda Sadeh struct ceph_vino *pvino = (struct ceph_vino *)data; 4693d14c5d2SYehuda Sadeh struct ceph_inode_info *ci = ceph_inode(inode); 4703d14c5d2SYehuda Sadeh return ci->i_vino.ino == pvino->ino && 4713d14c5d2SYehuda Sadeh ci->i_vino.snap == pvino->snap; 4723d14c5d2SYehuda Sadeh } 4733d14c5d2SYehuda Sadeh 4743d14c5d2SYehuda Sadeh static inline struct inode *ceph_find_inode(struct super_block *sb, 4753d14c5d2SYehuda Sadeh struct ceph_vino vino) 4763d14c5d2SYehuda Sadeh { 4773d14c5d2SYehuda Sadeh ino_t t = ceph_vino_to_ino(vino); 4783d14c5d2SYehuda Sadeh return ilookup5(sb, t, ceph_ino_compare, &vino); 4793d14c5d2SYehuda Sadeh } 4803d14c5d2SYehuda Sadeh 4813d14c5d2SYehuda Sadeh 4823d14c5d2SYehuda Sadeh /* 4833d14c5d2SYehuda Sadeh * Ceph inode. 4843d14c5d2SYehuda Sadeh */ 48510183a69SYan, Zheng #define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ 48610183a69SYan, Zheng #define CEPH_I_NODELAY (1 << 1) /* do not delay cap release */ 48710183a69SYan, Zheng #define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ 48810183a69SYan, Zheng #define CEPH_I_NOFLUSH (1 << 3) /* do not flush dirty caps */ 48910183a69SYan, Zheng #define CEPH_I_POOL_PERM (1 << 4) /* pool rd/wr bits are valid */ 49010183a69SYan, Zheng #define CEPH_I_POOL_RD (1 << 5) /* can read from pool */ 49110183a69SYan, Zheng #define CEPH_I_POOL_WR (1 << 6) /* can write to pool */ 492315f2408SYan, Zheng #define CEPH_I_SEC_INITED (1 << 7) /* security initialized */ 49377310320SYan, Zheng #define CEPH_I_CAP_DROPPED (1 << 8) /* caps were forcibly dropped */ 49413c2b57dSYan, Zheng #define CEPH_I_KICK_FLUSH (1 << 9) /* kick flushing caps */ 49570220ac8SYan, Zheng #define CEPH_I_FLUSH_SNAPS (1 << 10) /* need flush snapss */ 49626544c62SJeff Layton #define CEPH_I_ERROR_WRITE (1 << 11) /* have seen write errors */ 497b3f8d68fSYan, Zheng #define CEPH_I_ERROR_FILELOCK (1 << 12) /* have seen file lock errors */ 498b3f8d68fSYan, Zheng 49926544c62SJeff Layton 50026544c62SJeff Layton /* 50126544c62SJeff Layton * We set the ERROR_WRITE bit when we start seeing write errors on an inode 50226544c62SJeff Layton * and then clear it when they start succeeding. Note that we do a lockless 50326544c62SJeff Layton * check first, and only take the lock if it looks like it needs to be changed. 50426544c62SJeff Layton * The write submission code just takes this as a hint, so we're not too 50526544c62SJeff Layton * worried if a few slip through in either direction. 50626544c62SJeff Layton */ 50726544c62SJeff Layton static inline void ceph_set_error_write(struct ceph_inode_info *ci) 50826544c62SJeff Layton { 50926544c62SJeff Layton if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE)) { 51026544c62SJeff Layton spin_lock(&ci->i_ceph_lock); 51126544c62SJeff Layton ci->i_ceph_flags |= CEPH_I_ERROR_WRITE; 51226544c62SJeff Layton spin_unlock(&ci->i_ceph_lock); 51326544c62SJeff Layton } 51426544c62SJeff Layton } 51526544c62SJeff Layton 51626544c62SJeff Layton static inline void ceph_clear_error_write(struct ceph_inode_info *ci) 51726544c62SJeff Layton { 51826544c62SJeff Layton if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE) { 51926544c62SJeff Layton spin_lock(&ci->i_ceph_lock); 52026544c62SJeff Layton ci->i_ceph_flags &= ~CEPH_I_ERROR_WRITE; 52126544c62SJeff Layton spin_unlock(&ci->i_ceph_lock); 52226544c62SJeff Layton } 52326544c62SJeff Layton } 5243d14c5d2SYehuda Sadeh 5252f276c51SYan, Zheng static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, 526fdd4e158SYan, Zheng long long release_count, 527fdd4e158SYan, Zheng long long ordered_count) 528de57606cSSage Weil { 529fdd4e158SYan, Zheng smp_mb__before_atomic(); 530fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], release_count); 531fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], ordered_count); 532de57606cSSage Weil } 533de57606cSSage Weil 5342f276c51SYan, Zheng static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) 535de57606cSSage Weil { 536fdd4e158SYan, Zheng atomic64_inc(&ci->i_release_count); 537fdd4e158SYan, Zheng } 538fdd4e158SYan, Zheng 539fdd4e158SYan, Zheng static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) 540fdd4e158SYan, Zheng { 541fdd4e158SYan, Zheng atomic64_inc(&ci->i_ordered_count); 542de57606cSSage Weil } 543de57606cSSage Weil 5442f276c51SYan, Zheng static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) 545de57606cSSage Weil { 546fdd4e158SYan, Zheng return atomic64_read(&ci->i_complete_seq[0]) == 547fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count); 5482f276c51SYan, Zheng } 549de57606cSSage Weil 55070db4f36SYan, Zheng static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) 55170db4f36SYan, Zheng { 552fdd4e158SYan, Zheng return atomic64_read(&ci->i_complete_seq[0]) == 553fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count) && 554fdd4e158SYan, Zheng atomic64_read(&ci->i_complete_seq[1]) == 555fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count); 55670db4f36SYan, Zheng } 55770db4f36SYan, Zheng 5582f276c51SYan, Zheng static inline void ceph_dir_clear_complete(struct inode *inode) 5592f276c51SYan, Zheng { 5602f276c51SYan, Zheng __ceph_dir_clear_complete(ceph_inode(inode)); 5612f276c51SYan, Zheng } 5622f276c51SYan, Zheng 56370db4f36SYan, Zheng static inline void ceph_dir_clear_ordered(struct inode *inode) 5642f276c51SYan, Zheng { 565fdd4e158SYan, Zheng __ceph_dir_clear_ordered(ceph_inode(inode)); 566de57606cSSage Weil } 567de57606cSSage Weil 56870db4f36SYan, Zheng static inline bool ceph_dir_is_complete_ordered(struct inode *inode) 56970db4f36SYan, Zheng { 570fdd4e158SYan, Zheng bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode)); 571fdd4e158SYan, Zheng smp_rmb(); 57270db4f36SYan, Zheng return ret; 57370db4f36SYan, Zheng } 574de57606cSSage Weil 575de57606cSSage Weil /* find a specific frag @f */ 576de57606cSSage Weil extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, 577de57606cSSage Weil u32 f); 578de57606cSSage Weil 579de57606cSSage Weil /* 580de57606cSSage Weil * choose fragment for value @v. copy frag content to pfrag, if leaf 581de57606cSSage Weil * exists 582de57606cSSage Weil */ 583de57606cSSage Weil extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 584de57606cSSage Weil struct ceph_inode_frag *pfrag, 585de57606cSSage Weil int *found); 586de57606cSSage Weil 587de57606cSSage Weil static inline struct ceph_dentry_info *ceph_dentry(struct dentry *dentry) 588de57606cSSage Weil { 589de57606cSSage Weil return (struct ceph_dentry_info *)dentry->d_fsdata; 590de57606cSSage Weil } 591de57606cSSage Weil 592de57606cSSage Weil /* 593de57606cSSage Weil * caps helpers 594de57606cSSage Weil */ 595de57606cSSage Weil static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) 596de57606cSSage Weil { 597de57606cSSage Weil return !RB_EMPTY_ROOT(&ci->i_caps); 598de57606cSSage Weil } 599de57606cSSage Weil 600de57606cSSage Weil extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); 601de57606cSSage Weil extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); 602de57606cSSage Weil extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, 603de57606cSSage Weil struct ceph_cap *cap); 604de57606cSSage Weil 605de57606cSSage Weil static inline int ceph_caps_issued(struct ceph_inode_info *ci) 606de57606cSSage Weil { 607de57606cSSage Weil int issued; 608be655596SSage Weil spin_lock(&ci->i_ceph_lock); 609de57606cSSage Weil issued = __ceph_caps_issued(ci, NULL); 610be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 611de57606cSSage Weil return issued; 612de57606cSSage Weil } 613de57606cSSage Weil 614de57606cSSage Weil static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, 615de57606cSSage Weil int touch) 616de57606cSSage Weil { 617de57606cSSage Weil int r; 618be655596SSage Weil spin_lock(&ci->i_ceph_lock); 619de57606cSSage Weil r = __ceph_caps_issued_mask(ci, mask, touch); 620be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 621de57606cSSage Weil return r; 622de57606cSSage Weil } 623de57606cSSage Weil 624de57606cSSage Weil static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) 625de57606cSSage Weil { 626de57606cSSage Weil return ci->i_dirty_caps | ci->i_flushing_caps; 627de57606cSSage Weil } 628f66fd9f0SYan, Zheng extern struct ceph_cap_flush *ceph_alloc_cap_flush(void); 629f66fd9f0SYan, Zheng extern void ceph_free_cap_flush(struct ceph_cap_flush *cf); 630f66fd9f0SYan, Zheng extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, 631f66fd9f0SYan, Zheng struct ceph_cap_flush **pcf); 632de57606cSSage Weil 6339563f88cSYan, Zheng extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, 6349563f88cSYan, Zheng struct ceph_cap *ocap, int mask); 635de57606cSSage Weil extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); 636de57606cSSage Weil extern int __ceph_caps_used(struct ceph_inode_info *ci); 637de57606cSSage Weil 638de57606cSSage Weil extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); 639de57606cSSage Weil 640de57606cSSage Weil /* 641de57606cSSage Weil * wanted, by virtue of open file modes AND cap refs (buffered/cached data) 642de57606cSSage Weil */ 643de57606cSSage Weil static inline int __ceph_caps_wanted(struct ceph_inode_info *ci) 644de57606cSSage Weil { 645de57606cSSage Weil int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci); 646de57606cSSage Weil if (w & CEPH_CAP_FILE_BUFFER) 647de57606cSSage Weil w |= CEPH_CAP_FILE_EXCL; /* we want EXCL if dirty data */ 648de57606cSSage Weil return w; 649de57606cSSage Weil } 650de57606cSSage Weil 651de57606cSSage Weil /* what the mds thinks we want */ 652c1944fedSYan, Zheng extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check); 653de57606cSSage Weil 65437151668SYehuda Sadeh extern void ceph_caps_init(struct ceph_mds_client *mdsc); 65537151668SYehuda Sadeh extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); 65637151668SYehuda Sadeh extern void ceph_adjust_min_caps(struct ceph_mds_client *mdsc, int delta); 657e30ee581SZhi Zhang extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, 65837151668SYehuda Sadeh struct ceph_cap_reservation *ctx, int need); 659*7bf8f736SChengguang Xu extern void ceph_unreserve_caps(struct ceph_mds_client *mdsc, 66037151668SYehuda Sadeh struct ceph_cap_reservation *ctx); 6613d14c5d2SYehuda Sadeh extern void ceph_reservation_status(struct ceph_fs_client *client, 662de57606cSSage Weil int *total, int *avail, int *used, 66385ccce43SSage Weil int *reserved, int *min); 664de57606cSSage Weil 665de57606cSSage Weil 666de57606cSSage Weil 667de57606cSSage Weil /* 668de57606cSSage Weil * we keep buffered readdir results attached to file->private_data 669de57606cSSage Weil */ 6704918b6d1SSage Weil #define CEPH_F_SYNC 1 6719cfa1098SSage Weil #define CEPH_F_ATEND 2 6724918b6d1SSage Weil 673de57606cSSage Weil struct ceph_file_info { 674252c6728SSage Weil short fmode; /* initialized on open */ 675252c6728SSage Weil short flags; /* CEPH_F_* */ 676de57606cSSage Weil 6775d988308SYan, Zheng spinlock_t rw_contexts_lock; 6785d988308SYan, Zheng struct list_head rw_contexts; 679bb48bd4dSChengguang Xu }; 680bb48bd4dSChengguang Xu 681bb48bd4dSChengguang Xu struct ceph_dir_file_info { 682bb48bd4dSChengguang Xu struct ceph_file_info file_info; 6835d988308SYan, Zheng 684de57606cSSage Weil /* readdir: position within the dir */ 685de57606cSSage Weil u32 frag; 686de57606cSSage Weil struct ceph_mds_request *last_readdir; 687de57606cSSage Weil 688de57606cSSage Weil /* readdir: position within a frag */ 689f0494206SYan, Zheng unsigned next_offset; /* offset of next chunk (last_name's + 1) */ 690de57606cSSage Weil char *last_name; /* last entry in previous chunk */ 691fdd4e158SYan, Zheng long long dir_release_count; 692fdd4e158SYan, Zheng long long dir_ordered_count; 693fdd4e158SYan, Zheng int readdir_cache_idx; 694de57606cSSage Weil 695de57606cSSage Weil /* used for -o dirstat read() on directory thing */ 696de57606cSSage Weil char *dir_info; 697de57606cSSage Weil int dir_info_len; 698de57606cSSage Weil }; 699de57606cSSage Weil 7005d988308SYan, Zheng struct ceph_rw_context { 7015d988308SYan, Zheng struct list_head list; 7025d988308SYan, Zheng struct task_struct *thread; 7035d988308SYan, Zheng int caps; 7045d988308SYan, Zheng }; 7055d988308SYan, Zheng 7065d988308SYan, Zheng #define CEPH_DEFINE_RW_CONTEXT(_name, _caps) \ 7075d988308SYan, Zheng struct ceph_rw_context _name = { \ 7085d988308SYan, Zheng .thread = current, \ 7095d988308SYan, Zheng .caps = _caps, \ 7105d988308SYan, Zheng } 7115d988308SYan, Zheng 7125d988308SYan, Zheng static inline void ceph_add_rw_context(struct ceph_file_info *cf, 7135d988308SYan, Zheng struct ceph_rw_context *ctx) 7145d988308SYan, Zheng { 7155d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7165d988308SYan, Zheng list_add(&ctx->list, &cf->rw_contexts); 7175d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7185d988308SYan, Zheng } 7195d988308SYan, Zheng 7205d988308SYan, Zheng static inline void ceph_del_rw_context(struct ceph_file_info *cf, 7215d988308SYan, Zheng struct ceph_rw_context *ctx) 7225d988308SYan, Zheng { 7235d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7245d988308SYan, Zheng list_del(&ctx->list); 7255d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7265d988308SYan, Zheng } 7275d988308SYan, Zheng 7285d988308SYan, Zheng static inline struct ceph_rw_context* 7295d988308SYan, Zheng ceph_find_rw_context(struct ceph_file_info *cf) 7305d988308SYan, Zheng { 7315d988308SYan, Zheng struct ceph_rw_context *ctx, *found = NULL; 7325d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7335d988308SYan, Zheng list_for_each_entry(ctx, &cf->rw_contexts, list) { 7345d988308SYan, Zheng if (ctx->thread == current) { 7355d988308SYan, Zheng found = ctx; 7365d988308SYan, Zheng break; 7375d988308SYan, Zheng } 7385d988308SYan, Zheng } 7395d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7405d988308SYan, Zheng return found; 7415d988308SYan, Zheng } 7425d988308SYan, Zheng 743fdd4e158SYan, Zheng struct ceph_readdir_cache_control { 744fdd4e158SYan, Zheng struct page *page; 745fdd4e158SYan, Zheng struct dentry **dentries; 746fdd4e158SYan, Zheng int index; 747fdd4e158SYan, Zheng }; 748de57606cSSage Weil 749de57606cSSage Weil /* 750de57606cSSage Weil * A "snap realm" describes a subset of the file hierarchy sharing 751de57606cSSage Weil * the same set of snapshots that apply to it. The realms themselves 752de57606cSSage Weil * are organized into a hierarchy, such that children inherit (some of) 753de57606cSSage Weil * the snapshots of their parents. 754de57606cSSage Weil * 755de57606cSSage Weil * All inodes within the realm that have capabilities are linked into a 756de57606cSSage Weil * per-realm list. 757de57606cSSage Weil */ 758de57606cSSage Weil struct ceph_snap_realm { 759de57606cSSage Weil u64 ino; 760e3161f17SLuis Henriques struct inode *inode; 761de57606cSSage Weil atomic_t nref; 762a105f00cSSage Weil struct rb_node node; 763a105f00cSSage Weil 764de57606cSSage Weil u64 created, seq; 765de57606cSSage Weil u64 parent_ino; 766de57606cSSage Weil u64 parent_since; /* snapid when our current parent became so */ 767de57606cSSage Weil 768de57606cSSage Weil u64 *prior_parent_snaps; /* snaps inherited from any parents we */ 769aa711ee3SAlex Elder u32 num_prior_parent_snaps; /* had prior to parent_since */ 770de57606cSSage Weil u64 *snaps; /* snaps specific to this realm */ 771aa711ee3SAlex Elder u32 num_snaps; 772de57606cSSage Weil 773de57606cSSage Weil struct ceph_snap_realm *parent; 774de57606cSSage Weil struct list_head children; /* list of child realms */ 775de57606cSSage Weil struct list_head child_item; 776de57606cSSage Weil 777de57606cSSage Weil struct list_head empty_item; /* if i have ref==0 */ 778de57606cSSage Weil 779ae00d4f3SSage Weil struct list_head dirty_item; /* if realm needs new context */ 780ae00d4f3SSage Weil 781de57606cSSage Weil /* the current set of snaps for this realm */ 782de57606cSSage Weil struct ceph_snap_context *cached_context; 783de57606cSSage Weil 784de57606cSSage Weil struct list_head inodes_with_caps; 785de57606cSSage Weil spinlock_t inodes_with_caps_lock; 786de57606cSSage Weil }; 787de57606cSSage Weil 7883d14c5d2SYehuda Sadeh static inline int default_congestion_kb(void) 7893d14c5d2SYehuda Sadeh { 7903d14c5d2SYehuda Sadeh int congestion_kb; 791de57606cSSage Weil 792de57606cSSage Weil /* 7933d14c5d2SYehuda Sadeh * Copied from NFS 7943d14c5d2SYehuda Sadeh * 7953d14c5d2SYehuda Sadeh * congestion size, scale with available memory. 7963d14c5d2SYehuda Sadeh * 7973d14c5d2SYehuda Sadeh * 64MB: 8192k 7983d14c5d2SYehuda Sadeh * 128MB: 11585k 7993d14c5d2SYehuda Sadeh * 256MB: 16384k 8003d14c5d2SYehuda Sadeh * 512MB: 23170k 8013d14c5d2SYehuda Sadeh * 1GB: 32768k 8023d14c5d2SYehuda Sadeh * 2GB: 46340k 8033d14c5d2SYehuda Sadeh * 4GB: 65536k 8043d14c5d2SYehuda Sadeh * 8GB: 92681k 8053d14c5d2SYehuda Sadeh * 16GB: 131072k 8063d14c5d2SYehuda Sadeh * 8073d14c5d2SYehuda Sadeh * This allows larger machines to have larger/more transfers. 8083d14c5d2SYehuda Sadeh * Limit the default to 256M 809de57606cSSage Weil */ 8103d14c5d2SYehuda Sadeh congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10); 8113d14c5d2SYehuda Sadeh if (congestion_kb > 256*1024) 8123d14c5d2SYehuda Sadeh congestion_kb = 256*1024; 8133d14c5d2SYehuda Sadeh 8143d14c5d2SYehuda Sadeh return congestion_kb; 815de57606cSSage Weil } 816de57606cSSage Weil 817de57606cSSage Weil 818de57606cSSage Weil 819de57606cSSage Weil /* snap.c */ 820de57606cSSage Weil struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, 821de57606cSSage Weil u64 ino); 822de57606cSSage Weil extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, 823de57606cSSage Weil struct ceph_snap_realm *realm); 824de57606cSSage Weil extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, 825de57606cSSage Weil struct ceph_snap_realm *realm); 826de57606cSSage Weil extern int ceph_update_snap_trace(struct ceph_mds_client *m, 827982d6011SYan, Zheng void *p, void *e, bool deletion, 828982d6011SYan, Zheng struct ceph_snap_realm **realm_ret); 829de57606cSSage Weil extern void ceph_handle_snap(struct ceph_mds_client *mdsc, 8302600d2ddSSage Weil struct ceph_mds_session *session, 831de57606cSSage Weil struct ceph_msg *msg); 832fc837c8fSSage Weil extern void ceph_queue_cap_snap(struct ceph_inode_info *ci); 833de57606cSSage Weil extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, 834de57606cSSage Weil struct ceph_cap_snap *capsnap); 835de57606cSSage Weil extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); 836de57606cSSage Weil 837de57606cSSage Weil /* 838de57606cSSage Weil * a cap_snap is "pending" if it is still awaiting an in-progress 839de57606cSSage Weil * sync write (that may/may not still update size, mtime, etc.). 840de57606cSSage Weil */ 841de57606cSSage Weil static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) 842de57606cSSage Weil { 843de57606cSSage Weil return !list_empty(&ci->i_cap_snaps) && 84486056090SYan, Zheng list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap, 845de57606cSSage Weil ci_item)->writing; 846de57606cSSage Weil } 847de57606cSSage Weil 848de57606cSSage Weil /* inode.c */ 849de57606cSSage Weil extern const struct inode_operations ceph_file_iops; 850de57606cSSage Weil 851de57606cSSage Weil extern struct inode *ceph_alloc_inode(struct super_block *sb); 852de57606cSSage Weil extern void ceph_destroy_inode(struct inode *inode); 8539f12bd11SYan, Zheng extern int ceph_drop_inode(struct inode *inode); 854de57606cSSage Weil 855de57606cSSage Weil extern struct inode *ceph_get_inode(struct super_block *sb, 856de57606cSSage Weil struct ceph_vino vino); 857de57606cSSage Weil extern struct inode *ceph_get_snapdir(struct inode *parent); 858de57606cSSage Weil extern int ceph_fill_file_size(struct inode *inode, int issued, 859de57606cSSage Weil u32 truncate_seq, u64 truncate_size, u64 size); 860de57606cSSage Weil extern void ceph_fill_file_time(struct inode *inode, int issued, 8619bbeab41SArnd Bergmann u64 time_warp_seq, struct timespec64 *ctime, 8629bbeab41SArnd Bergmann struct timespec64 *mtime, 8639bbeab41SArnd Bergmann struct timespec64 *atime); 864de57606cSSage Weil extern int ceph_fill_trace(struct super_block *sb, 865f5a03b08SJeff Layton struct ceph_mds_request *req); 866de57606cSSage Weil extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, 867de57606cSSage Weil struct ceph_mds_session *session); 868de57606cSSage Weil 869de57606cSSage Weil extern int ceph_inode_holds_cap(struct inode *inode, int mask); 870de57606cSSage Weil 871efb0ca76SYan, Zheng extern bool ceph_inode_set_size(struct inode *inode, loff_t size); 872b415bf4fSYan, Zheng extern void __ceph_do_pending_vmtruncate(struct inode *inode); 8733c6f6b79SSage Weil extern void ceph_queue_vmtruncate(struct inode *inode); 8743c6f6b79SSage Weil 8753c6f6b79SSage Weil extern void ceph_queue_invalidate(struct inode *inode); 8763c6f6b79SSage Weil extern void ceph_queue_writeback(struct inode *inode); 877de57606cSSage Weil 87801deead0SYan, Zheng extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 87901deead0SYan, Zheng int mask, bool force); 88001deead0SYan, Zheng static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) 88101deead0SYan, Zheng { 88201deead0SYan, Zheng return __ceph_do_getattr(inode, NULL, mask, force); 88301deead0SYan, Zheng } 88410556cb2SAl Viro extern int ceph_permission(struct inode *inode, int mask); 885a26feccaSAndreas Gruenbacher extern int __ceph_setattr(struct inode *inode, struct iattr *attr); 886de57606cSSage Weil extern int ceph_setattr(struct dentry *dentry, struct iattr *attr); 887a528d35eSDavid Howells extern int ceph_getattr(const struct path *path, struct kstat *stat, 888a528d35eSDavid Howells u32 request_mask, unsigned int flags); 889de57606cSSage Weil 890de57606cSSage Weil /* xattr.c */ 891a26feccaSAndreas Gruenbacher int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); 8927221fe4cSGuangliang Zhao ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); 893de57606cSSage Weil extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); 894de57606cSSage Weil extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci); 895de57606cSSage Weil extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); 8963ce6cd12SAlex Elder extern void __init ceph_xattr_init(void); 8973ce6cd12SAlex Elder extern void ceph_xattr_exit(void); 898b1ee94aaSYan, Zheng extern const struct xattr_handler *ceph_xattr_handlers[]; 899de57606cSSage Weil 900315f2408SYan, Zheng #ifdef CONFIG_SECURITY 901315f2408SYan, Zheng extern bool ceph_security_xattr_deadlock(struct inode *in); 902315f2408SYan, Zheng extern bool ceph_security_xattr_wanted(struct inode *in); 903315f2408SYan, Zheng #else 904315f2408SYan, Zheng static inline bool ceph_security_xattr_deadlock(struct inode *in) 905315f2408SYan, Zheng { 906315f2408SYan, Zheng return false; 907315f2408SYan, Zheng } 908315f2408SYan, Zheng static inline bool ceph_security_xattr_wanted(struct inode *in) 909315f2408SYan, Zheng { 910315f2408SYan, Zheng return false; 911315f2408SYan, Zheng } 912315f2408SYan, Zheng #endif 913315f2408SYan, Zheng 9147221fe4cSGuangliang Zhao /* acl.c */ 915b1ee94aaSYan, Zheng struct ceph_acls_info { 916b1ee94aaSYan, Zheng void *default_acl; 917b1ee94aaSYan, Zheng void *acl; 918b1ee94aaSYan, Zheng struct ceph_pagelist *pagelist; 919b1ee94aaSYan, Zheng }; 9207221fe4cSGuangliang Zhao 9217221fe4cSGuangliang Zhao #ifdef CONFIG_CEPH_FS_POSIX_ACL 9227221fe4cSGuangliang Zhao 9237221fe4cSGuangliang Zhao struct posix_acl *ceph_get_acl(struct inode *, int); 92472466d0bSSage Weil int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type); 925b1ee94aaSYan, Zheng int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 926b1ee94aaSYan, Zheng struct ceph_acls_info *info); 927b1ee94aaSYan, Zheng void ceph_init_inode_acls(struct inode *inode, struct ceph_acls_info *info); 928b1ee94aaSYan, Zheng void ceph_release_acls_info(struct ceph_acls_info *info); 929c969d9bfSGuangliang Zhao 930c969d9bfSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 931c969d9bfSGuangliang Zhao { 932c969d9bfSGuangliang Zhao forget_all_cached_acls(inode); 933c969d9bfSGuangliang Zhao } 9347221fe4cSGuangliang Zhao 9357221fe4cSGuangliang Zhao #else 9367221fe4cSGuangliang Zhao 9377221fe4cSGuangliang Zhao #define ceph_get_acl NULL 93872466d0bSSage Weil #define ceph_set_acl NULL 9397221fe4cSGuangliang Zhao 940b1ee94aaSYan, Zheng static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 941b1ee94aaSYan, Zheng struct ceph_acls_info *info) 9427221fe4cSGuangliang Zhao { 9437221fe4cSGuangliang Zhao return 0; 9447221fe4cSGuangliang Zhao } 945b1ee94aaSYan, Zheng static inline void ceph_init_inode_acls(struct inode *inode, 946b1ee94aaSYan, Zheng struct ceph_acls_info *info) 947b1ee94aaSYan, Zheng { 948b1ee94aaSYan, Zheng } 949b1ee94aaSYan, Zheng static inline void ceph_release_acls_info(struct ceph_acls_info *info) 950b1ee94aaSYan, Zheng { 951b1ee94aaSYan, Zheng } 9527221fe4cSGuangliang Zhao static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) 9537221fe4cSGuangliang Zhao { 9547221fe4cSGuangliang Zhao return 0; 9557221fe4cSGuangliang Zhao } 9567221fe4cSGuangliang Zhao 9577221fe4cSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 9587221fe4cSGuangliang Zhao { 9597221fe4cSGuangliang Zhao } 9607221fe4cSGuangliang Zhao 9617221fe4cSGuangliang Zhao #endif 9627221fe4cSGuangliang Zhao 963de57606cSSage Weil /* caps.c */ 964de57606cSSage Weil extern const char *ceph_cap_string(int c); 965de57606cSSage Weil extern void ceph_handle_caps(struct ceph_mds_session *session, 966de57606cSSage Weil struct ceph_msg *msg); 967d9df2783SYan, Zheng extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, 968d9df2783SYan, Zheng struct ceph_cap_reservation *ctx); 969d9df2783SYan, Zheng extern void ceph_add_cap(struct inode *inode, 970de57606cSSage Weil struct ceph_mds_session *session, u64 cap_id, 971de57606cSSage Weil int fmode, unsigned issued, unsigned wanted, 972de57606cSSage Weil unsigned cap, unsigned seq, u64 realmino, int flags, 973d9df2783SYan, Zheng struct ceph_cap **new_cap); 974a096b09aSYan, Zheng extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); 97537151668SYehuda Sadeh extern void ceph_put_cap(struct ceph_mds_client *mdsc, 97637151668SYehuda Sadeh struct ceph_cap *cap); 9779215aeeaSYan, Zheng extern int ceph_is_any_caps(struct inode *inode); 978de57606cSSage Weil 979de57606cSSage Weil extern void ceph_queue_caps_release(struct inode *inode); 980f1a3d572SStephen Rothwell extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); 98102c24a82SJosef Bacik extern int ceph_fsync(struct file *file, loff_t start, loff_t end, 98202c24a82SJosef Bacik int datasync); 983e548e9b9SYan, Zheng extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, 984e548e9b9SYan, Zheng struct ceph_mds_session *session); 985de57606cSSage Weil extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, 986de57606cSSage Weil struct ceph_mds_session *session); 9872bc50259SGreg Farnum extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, 9882bc50259SGreg Farnum int mds); 989de57606cSSage Weil extern int ceph_get_cap_mds(struct inode *inode); 990de57606cSSage Weil extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); 991de57606cSSage Weil extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); 992de57606cSSage Weil extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, 993de57606cSSage Weil struct ceph_snap_context *snapc); 994ed9b430cSYan, Zheng extern void ceph_flush_snaps(struct ceph_inode_info *ci, 9950e294387SYan, Zheng struct ceph_mds_session **psession); 996efb0ca76SYan, Zheng extern bool __ceph_should_report_size(struct ceph_inode_info *ci); 997de57606cSSage Weil extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, 998de57606cSSage Weil struct ceph_mds_session *session); 999afcdaea3SSage Weil extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc); 1000afcdaea3SSage Weil extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); 10016ef0bc6dSZhi Zhang extern int ceph_drop_caps_for_unlink(struct inode *inode); 1002de57606cSSage Weil extern int ceph_encode_inode_release(void **p, struct inode *inode, 1003de57606cSSage Weil int mds, int drop, int unless, int force); 1004de57606cSSage Weil extern int ceph_encode_dentry_release(void **p, struct dentry *dn, 1005ca6c8ae0SJeff Layton struct inode *dir, 1006de57606cSSage Weil int mds, int drop, int unless); 1007de57606cSSage Weil 1008de57606cSSage Weil extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, 100931c542a1SYan, Zheng loff_t endoff, int *got, struct page **pinned_page); 10102b1ac852SYan, Zheng extern int ceph_try_get_caps(struct ceph_inode_info *ci, 10112b1ac852SYan, Zheng int need, int want, int *got); 1012de57606cSSage Weil 1013de57606cSSage Weil /* for counting open files by mode */ 1014774a6a11SYan, Zheng extern void __ceph_get_fmode(struct ceph_inode_info *ci, int mode); 1015de57606cSSage Weil extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode); 1016de57606cSSage Weil 1017de57606cSSage Weil /* addr.c */ 1018de57606cSSage Weil extern const struct address_space_operations ceph_aops; 1019de57606cSSage Weil extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); 102010183a69SYan, Zheng extern int ceph_uninline_data(struct file *filp, struct page *locked_page); 102110183a69SYan, Zheng extern int ceph_pool_perm_check(struct ceph_inode_info *ci, int need); 102210183a69SYan, Zheng extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); 1023de57606cSSage Weil 1024de57606cSSage Weil /* file.c */ 1025de57606cSSage Weil extern const struct file_operations ceph_file_fops; 10269e0eb85dSAlex Elder 102777310320SYan, Zheng extern int ceph_renew_caps(struct inode *inode); 1028de57606cSSage Weil extern int ceph_open(struct inode *inode, struct file *file); 10295ef50c3bSSage Weil extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, 10305ef50c3bSSage Weil struct file *file, unsigned flags, umode_t mode, 10315ef50c3bSSage Weil int *opened); 1032de57606cSSage Weil extern int ceph_release(struct inode *inode, struct file *filp); 103331c542a1SYan, Zheng extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, 103431c542a1SYan, Zheng char *data, size_t len); 103555f2a045SIlya Dryomov 1036de57606cSSage Weil /* dir.c */ 1037de57606cSSage Weil extern const struct file_operations ceph_dir_fops; 103838c48b5fSYan, Zheng extern const struct file_operations ceph_snapdir_fops; 1039de57606cSSage Weil extern const struct inode_operations ceph_dir_iops; 104038c48b5fSYan, Zheng extern const struct inode_operations ceph_snapdir_iops; 104118fc8abdSAl Viro extern const struct dentry_operations ceph_dentry_ops; 1042de57606cSSage Weil 1043f3c4ebe6SYan, Zheng extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order); 1044de57606cSSage Weil extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); 1045468640e3SSage Weil extern int ceph_handle_snapdir(struct ceph_mds_request *req, 1046468640e3SSage Weil struct dentry *dentry, int err); 1047de57606cSSage Weil extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, 1048de57606cSSage Weil struct dentry *dentry, int err); 1049de57606cSSage Weil 1050de57606cSSage Weil extern void ceph_dentry_lru_add(struct dentry *dn); 1051de57606cSSage Weil extern void ceph_dentry_lru_touch(struct dentry *dn); 1052de57606cSSage Weil extern void ceph_dentry_lru_del(struct dentry *dn); 105381a6cf2dSSage Weil extern void ceph_invalidate_dentry_lease(struct dentry *dentry); 1054e5f86dc3SSage Weil extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); 1055fdd4e158SYan, Zheng extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl); 1056de57606cSSage Weil 1057de57606cSSage Weil /* ioctl.c */ 1058de57606cSSage Weil extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 1059de57606cSSage Weil 1060de57606cSSage Weil /* export.c */ 1061de57606cSSage Weil extern const struct export_operations ceph_export_ops; 1062de57606cSSage Weil 106340819f6fSGreg Farnum /* locks.c */ 1064eb13e832SYan, Zheng extern __init void ceph_flock_init(void); 106540819f6fSGreg Farnum extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); 106640819f6fSGreg Farnum extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); 106740819f6fSGreg Farnum extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); 106839be95e9SJim Schutt extern int ceph_encode_locks_to_buffer(struct inode *inode, 106939be95e9SJim Schutt struct ceph_filelock *flocks, 107039be95e9SJim Schutt int num_fcntl_locks, 107139be95e9SJim Schutt int num_flock_locks); 107239be95e9SJim Schutt extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, 107339be95e9SJim Schutt struct ceph_pagelist *pagelist, 107439be95e9SJim Schutt int num_fcntl_locks, int num_flock_locks); 107540819f6fSGreg Farnum 10763d14c5d2SYehuda Sadeh /* debugfs.c */ 10773d14c5d2SYehuda Sadeh extern int ceph_fs_debugfs_init(struct ceph_fs_client *client); 10783d14c5d2SYehuda Sadeh extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); 10793d14c5d2SYehuda Sadeh 1080fb18a575SLuis Henriques /* quota.c */ 1081d557c48dSLuis Henriques static inline bool __ceph_has_any_quota(struct ceph_inode_info *ci) 1082d557c48dSLuis Henriques { 1083d557c48dSLuis Henriques return ci->i_max_files || ci->i_max_bytes; 1084d557c48dSLuis Henriques } 1085d557c48dSLuis Henriques 1086d557c48dSLuis Henriques extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc); 1087d557c48dSLuis Henriques 1088d557c48dSLuis Henriques static inline void __ceph_update_quota(struct ceph_inode_info *ci, 1089d557c48dSLuis Henriques u64 max_bytes, u64 max_files) 1090d557c48dSLuis Henriques { 1091d557c48dSLuis Henriques bool had_quota, has_quota; 1092d557c48dSLuis Henriques had_quota = __ceph_has_any_quota(ci); 1093d557c48dSLuis Henriques ci->i_max_bytes = max_bytes; 1094d557c48dSLuis Henriques ci->i_max_files = max_files; 1095d557c48dSLuis Henriques has_quota = __ceph_has_any_quota(ci); 1096d557c48dSLuis Henriques 1097d557c48dSLuis Henriques if (had_quota != has_quota) 1098d557c48dSLuis Henriques ceph_adjust_quota_realms_count(&ci->vfs_inode, has_quota); 1099d557c48dSLuis Henriques } 1100d557c48dSLuis Henriques 1101fb18a575SLuis Henriques extern void ceph_handle_quota(struct ceph_mds_client *mdsc, 1102fb18a575SLuis Henriques struct ceph_mds_session *session, 1103fb18a575SLuis Henriques struct ceph_msg *msg); 1104b7a29217SLuis Henriques extern bool ceph_quota_is_max_files_exceeded(struct inode *inode); 1105cafe21a4SLuis Henriques extern bool ceph_quota_is_same_realm(struct inode *old, struct inode *new); 11062b83845fSLuis Henriques extern bool ceph_quota_is_max_bytes_exceeded(struct inode *inode, 11072b83845fSLuis Henriques loff_t newlen); 11081ab302a0SLuis Henriques extern bool ceph_quota_is_max_bytes_approaching(struct inode *inode, 11091ab302a0SLuis Henriques loff_t newlen); 11109122eed5SLuis Henriques extern bool ceph_quota_update_statfs(struct ceph_fs_client *fsc, 11119122eed5SLuis Henriques struct kstatfs *buf); 1112fb18a575SLuis Henriques 1113de57606cSSage Weil #endif /* _FS_CEPH_SUPER_H */ 1114