1de57606cSSage Weil #ifndef _FS_CEPH_SUPER_H 2de57606cSSage Weil #define _FS_CEPH_SUPER_H 3de57606cSSage Weil 43d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 5de57606cSSage Weil 6de57606cSSage Weil #include <asm/unaligned.h> 7de57606cSSage Weil #include <linux/backing-dev.h> 8de57606cSSage Weil #include <linux/completion.h> 9de57606cSSage Weil #include <linux/exportfs.h> 10de57606cSSage Weil #include <linux/fs.h> 11de57606cSSage Weil #include <linux/mempool.h> 12de57606cSSage Weil #include <linux/pagemap.h> 13de57606cSSage Weil #include <linux/wait.h> 14f1a3d572SStephen Rothwell #include <linux/writeback.h> 155a0e3ad6STejun Heo #include <linux/slab.h> 16*c969d9bfSGuangliang Zhao #include <linux/posix_acl.h> 17de57606cSSage Weil 183d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 19de57606cSSage Weil 2099ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 2199ccbd22SMilosz Tanski #include <linux/fscache.h> 2299ccbd22SMilosz Tanski #endif 2399ccbd22SMilosz Tanski 24de57606cSSage Weil /* f_type in struct statfs */ 25de57606cSSage Weil #define CEPH_SUPER_MAGIC 0x00c36400 26de57606cSSage Weil 27de57606cSSage Weil /* large granularity for statfs utilization stats to facilitate 28de57606cSSage Weil * large volume sizes on 32-bit machines. */ 2992a49fb0SSage Weil #define CEPH_BLOCK_SHIFT 22 /* 4 MB */ 30de57606cSSage Weil #define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) 31de57606cSSage Weil 323d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ 333d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ 343d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ 35ad1fee96SYehuda Sadeh #define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ 36a40dc6ccSSage Weil #define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ 3799ccbd22SMilosz Tanski #define CEPH_MOUNT_OPT_FSCACHE (1<<10) /* use fscache */ 386a259382SSage Weil 393d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_DEFAULT (CEPH_MOUNT_OPT_RBYTES) 40de57606cSSage Weil 413d14c5d2SYehuda Sadeh #define ceph_set_mount_opt(fsc, opt) \ 423d14c5d2SYehuda Sadeh (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt; 433d14c5d2SYehuda Sadeh #define ceph_test_mount_opt(fsc, opt) \ 443d14c5d2SYehuda Sadeh (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) 45de57606cSSage Weil 4683817e35SSage Weil #define CEPH_RSIZE_DEFAULT 0 /* max read size */ 4783817e35SSage Weil #define CEPH_RASIZE_DEFAULT (8192*1024) /* readahead */ 483d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_DEFAULT 1024 493d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) 503d14c5d2SYehuda Sadeh #define CEPH_SNAPDIRNAME_DEFAULT ".snap" 51de57606cSSage Weil 523d14c5d2SYehuda Sadeh struct ceph_mount_options { 53de57606cSSage Weil int flags; 543d14c5d2SYehuda Sadeh int sb_flags; 553d14c5d2SYehuda Sadeh 5683817e35SSage Weil int wsize; /* max write size */ 5783817e35SSage Weil int rsize; /* max read size */ 5883817e35SSage Weil int rasize; /* max readahead */ 596e19a16eSSage Weil int congestion_kb; /* max writeback in flight */ 606e19a16eSSage Weil int caps_wanted_delay_min, caps_wanted_delay_max; 616e19a16eSSage Weil int cap_release_safety; 6223804d91SSage Weil int max_readdir; /* max readdir result (entires) */ 6323804d91SSage Weil int max_readdir_bytes; /* max readdir result (bytes) */ 643d14c5d2SYehuda Sadeh 653d14c5d2SYehuda Sadeh /* 663d14c5d2SYehuda Sadeh * everything above this point can be memcmp'd; everything below 673d14c5d2SYehuda Sadeh * is handled in compare_mount_options() 683d14c5d2SYehuda Sadeh */ 693d14c5d2SYehuda Sadeh 70de57606cSSage Weil char *snapdir_name; /* default ".snap" */ 71de57606cSSage Weil }; 72de57606cSSage Weil 733d14c5d2SYehuda Sadeh struct ceph_fs_client { 74de57606cSSage Weil struct super_block *sb; 75de57606cSSage Weil 763d14c5d2SYehuda Sadeh struct ceph_mount_options *mount_options; 773d14c5d2SYehuda Sadeh struct ceph_client *client; 783d14c5d2SYehuda Sadeh 79de57606cSSage Weil unsigned long mount_state; 8085ccce43SSage Weil int min_caps; /* min caps i added */ 8185ccce43SSage Weil 823d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc; 83de57606cSSage Weil 84de57606cSSage Weil /* writeback */ 85de57606cSSage Weil mempool_t *wb_pagevec_pool; 86de57606cSSage Weil struct workqueue_struct *wb_wq; 87de57606cSSage Weil struct workqueue_struct *pg_inv_wq; 88de57606cSSage Weil struct workqueue_struct *trunc_wq; 892baba250SYehuda Sadeh atomic_long_t writeback_count; 90de57606cSSage Weil 91de57606cSSage Weil struct backing_dev_info backing_dev_info; 920743304dSSage Weil 930743304dSSage Weil #ifdef CONFIG_DEBUG_FS 943d14c5d2SYehuda Sadeh struct dentry *debugfs_dentry_lru, *debugfs_caps; 952baba250SYehuda Sadeh struct dentry *debugfs_congestion_kb; 9606edf046SSage Weil struct dentry *debugfs_bdi; 973d14c5d2SYehuda Sadeh struct dentry *debugfs_mdsc, *debugfs_mdsmap; 980743304dSSage Weil #endif 9999ccbd22SMilosz Tanski 10099ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 10199ccbd22SMilosz Tanski struct fscache_cookie *fscache; 10299ccbd22SMilosz Tanski struct workqueue_struct *revalidate_wq; 10399ccbd22SMilosz Tanski #endif 104de57606cSSage Weil }; 105de57606cSSage Weil 1063d14c5d2SYehuda Sadeh 107de57606cSSage Weil /* 108de57606cSSage Weil * File i/o capability. This tracks shared state with the metadata 109de57606cSSage Weil * server that allows us to cache or writeback attributes or to read 110de57606cSSage Weil * and write data. For any given inode, we should have one or more 111de57606cSSage Weil * capabilities, one issued by each metadata server, and our 112de57606cSSage Weil * cumulative access is the OR of all issued capabilities. 113de57606cSSage Weil * 114de57606cSSage Weil * Each cap is referenced by the inode's i_caps rbtree and by per-mds 115de57606cSSage Weil * session capability lists. 116de57606cSSage Weil */ 117de57606cSSage Weil struct ceph_cap { 118de57606cSSage Weil struct ceph_inode_info *ci; 119de57606cSSage Weil struct rb_node ci_node; /* per-ci cap tree */ 120de57606cSSage Weil struct ceph_mds_session *session; 121de57606cSSage Weil struct list_head session_caps; /* per-session caplist */ 122de57606cSSage Weil int mds; 123de57606cSSage Weil u64 cap_id; /* unique cap id (mds provided) */ 124de57606cSSage Weil int issued; /* latest, from the mds */ 125de57606cSSage Weil int implemented; /* implemented superset of issued (for revocation) */ 126de57606cSSage Weil int mds_wanted; 127685f9a5dSSage Weil u32 seq, issue_seq, mseq; 128685f9a5dSSage Weil u32 cap_gen; /* active/stale cycle */ 129de57606cSSage Weil unsigned long last_used; 130de57606cSSage Weil struct list_head caps_item; 131de57606cSSage Weil }; 132de57606cSSage Weil 133de57606cSSage Weil #define CHECK_CAPS_NODELAY 1 /* do not delay any further */ 134de57606cSSage Weil #define CHECK_CAPS_AUTHONLY 2 /* only check auth cap */ 135de57606cSSage Weil #define CHECK_CAPS_FLUSH 4 /* flush any dirty caps */ 136de57606cSSage Weil 137de57606cSSage Weil /* 138de57606cSSage Weil * Snapped cap state that is pending flush to mds. When a snapshot occurs, 139de57606cSSage Weil * we first complete any in-process sync writes and writeback any dirty 140de57606cSSage Weil * data before flushing the snapped state (tracked here) back to the MDS. 141de57606cSSage Weil */ 142de57606cSSage Weil struct ceph_cap_snap { 143de57606cSSage Weil atomic_t nref; 144de57606cSSage Weil struct ceph_inode_info *ci; 145de57606cSSage Weil struct list_head ci_item, flushing_item; 146de57606cSSage Weil 147de57606cSSage Weil u64 follows, flush_tid; 148de57606cSSage Weil int issued, dirty; 149de57606cSSage Weil struct ceph_snap_context *context; 150de57606cSSage Weil 1515706b27dSAl Viro umode_t mode; 15205cb11c1SEric W. Biederman kuid_t uid; 15305cb11c1SEric W. Biederman kgid_t gid; 154de57606cSSage Weil 1554a625be4SSage Weil struct ceph_buffer *xattr_blob; 156de57606cSSage Weil u64 xattr_version; 157de57606cSSage Weil 158de57606cSSage Weil u64 size; 159de57606cSSage Weil struct timespec mtime, atime, ctime; 160de57606cSSage Weil u64 time_warp_seq; 161de57606cSSage Weil int writing; /* a sync write is still in progress */ 162de57606cSSage Weil int dirty_pages; /* dirty pages awaiting writeback */ 163de57606cSSage Weil }; 164de57606cSSage Weil 165de57606cSSage Weil static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) 166de57606cSSage Weil { 1674a625be4SSage Weil if (atomic_dec_and_test(&capsnap->nref)) { 1684a625be4SSage Weil if (capsnap->xattr_blob) 1694a625be4SSage Weil ceph_buffer_put(capsnap->xattr_blob); 170de57606cSSage Weil kfree(capsnap); 171de57606cSSage Weil } 1724a625be4SSage Weil } 173de57606cSSage Weil 174de57606cSSage Weil /* 175de57606cSSage Weil * The frag tree describes how a directory is fragmented, potentially across 176de57606cSSage Weil * multiple metadata servers. It is also used to indicate points where 177de57606cSSage Weil * metadata authority is delegated, and whether/where metadata is replicated. 178de57606cSSage Weil * 179de57606cSSage Weil * A _leaf_ frag will be present in the i_fragtree IFF there is 180de57606cSSage Weil * delegation info. That is, if mds >= 0 || ndist > 0. 181de57606cSSage Weil */ 182de57606cSSage Weil #define CEPH_MAX_DIRFRAG_REP 4 183de57606cSSage Weil 184de57606cSSage Weil struct ceph_inode_frag { 185de57606cSSage Weil struct rb_node node; 186de57606cSSage Weil 187de57606cSSage Weil /* fragtree state */ 188de57606cSSage Weil u32 frag; 189de57606cSSage Weil int split_by; /* i.e. 2^(split_by) children */ 190de57606cSSage Weil 191de57606cSSage Weil /* delegation and replication info */ 192de57606cSSage Weil int mds; /* -1 if same authority as parent */ 193de57606cSSage Weil int ndist; /* >0 if replicated */ 194de57606cSSage Weil int dist[CEPH_MAX_DIRFRAG_REP]; 195de57606cSSage Weil }; 196de57606cSSage Weil 197de57606cSSage Weil /* 198de57606cSSage Weil * We cache inode xattrs as an encoded blob until they are first used, 199de57606cSSage Weil * at which point we parse them into an rbtree. 200de57606cSSage Weil */ 201de57606cSSage Weil struct ceph_inode_xattr { 202de57606cSSage Weil struct rb_node node; 203de57606cSSage Weil 204de57606cSSage Weil const char *name; 205de57606cSSage Weil int name_len; 206de57606cSSage Weil const char *val; 207de57606cSSage Weil int val_len; 208de57606cSSage Weil int dirty; 209de57606cSSage Weil 210de57606cSSage Weil int should_free_name; 211de57606cSSage Weil int should_free_val; 212de57606cSSage Weil }; 213de57606cSSage Weil 2143d14c5d2SYehuda Sadeh /* 2153d14c5d2SYehuda Sadeh * Ceph dentry state 2163d14c5d2SYehuda Sadeh */ 2173d14c5d2SYehuda Sadeh struct ceph_dentry_info { 2183d14c5d2SYehuda Sadeh struct ceph_mds_session *lease_session; 2193d14c5d2SYehuda Sadeh u32 lease_gen, lease_shared_gen; 2203d14c5d2SYehuda Sadeh u32 lease_seq; 2213d14c5d2SYehuda Sadeh unsigned long lease_renew_after, lease_renew_from; 2223d14c5d2SYehuda Sadeh struct list_head lru; 2233d14c5d2SYehuda Sadeh struct dentry *dentry; 2243d14c5d2SYehuda Sadeh u64 time; 2253d14c5d2SYehuda Sadeh u64 offset; 2263d14c5d2SYehuda Sadeh }; 2273d14c5d2SYehuda Sadeh 228de57606cSSage Weil struct ceph_inode_xattrs_info { 229de57606cSSage Weil /* 230de57606cSSage Weil * (still encoded) xattr blob. we avoid the overhead of parsing 231de57606cSSage Weil * this until someone actually calls getxattr, etc. 232de57606cSSage Weil * 233de57606cSSage Weil * blob->vec.iov_len == 4 implies there are no xattrs; blob == 234de57606cSSage Weil * NULL means we don't know. 235de57606cSSage Weil */ 236de57606cSSage Weil struct ceph_buffer *blob, *prealloc_blob; 237de57606cSSage Weil 238de57606cSSage Weil struct rb_root index; 239de57606cSSage Weil bool dirty; 240de57606cSSage Weil int count; 241de57606cSSage Weil int names_size; 242de57606cSSage Weil int vals_size; 243de57606cSSage Weil u64 version, index_version; 244de57606cSSage Weil }; 245de57606cSSage Weil 246de57606cSSage Weil /* 247de57606cSSage Weil * Ceph inode. 248de57606cSSage Weil */ 249de57606cSSage Weil struct ceph_inode_info { 250de57606cSSage Weil struct ceph_vino i_vino; /* ceph ino + snap */ 251de57606cSSage Weil 252be655596SSage Weil spinlock_t i_ceph_lock; 253be655596SSage Weil 254de57606cSSage Weil u64 i_version; 255de57606cSSage Weil u32 i_time_warp_seq; 256de57606cSSage Weil 257de57606cSSage Weil unsigned i_ceph_flags; 2582f276c51SYan, Zheng atomic_t i_release_count; 2592f276c51SYan, Zheng atomic_t i_complete_count; 260de57606cSSage Weil 2616c0f3af7SSage Weil struct ceph_dir_layout i_dir_layout; 262de57606cSSage Weil struct ceph_file_layout i_layout; 263de57606cSSage Weil char *i_symlink; 264de57606cSSage Weil 265de57606cSSage Weil /* for dirs */ 266de57606cSSage Weil struct timespec i_rctime; 267de57606cSSage Weil u64 i_rbytes, i_rfiles, i_rsubdirs; 268de57606cSSage Weil u64 i_files, i_subdirs; 2692f276c51SYan, Zheng u64 i_max_offset; /* largest readdir offset, set with complete dir */ 270de57606cSSage Weil 271de57606cSSage Weil struct rb_root i_fragtree; 272de57606cSSage Weil struct mutex i_fragtree_mutex; 273de57606cSSage Weil 274de57606cSSage Weil struct ceph_inode_xattrs_info i_xattrs; 275de57606cSSage Weil 276be655596SSage Weil /* capabilities. protected _both_ by i_ceph_lock and cap->session's 277de57606cSSage Weil * s_mutex. */ 278de57606cSSage Weil struct rb_root i_caps; /* cap list */ 279de57606cSSage Weil struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ 280de57606cSSage Weil unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ 281de57606cSSage Weil struct list_head i_dirty_item, i_flushing_item; 282de57606cSSage Weil u64 i_cap_flush_seq; 283de57606cSSage Weil /* we need to track cap writeback on a per-cap-bit basis, to allow 284de57606cSSage Weil * overlapping, pipelined cap flushes to the mds. we can probably 285de57606cSSage Weil * reduce the tid to 8 bits if we're concerned about inode size. */ 286de57606cSSage Weil u16 i_cap_flush_last_tid, i_cap_flush_tid[CEPH_CAP_BITS]; 287de57606cSSage Weil wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ 288de57606cSSage Weil unsigned long i_hold_caps_min; /* jiffies */ 289de57606cSSage Weil unsigned long i_hold_caps_max; /* jiffies */ 290de57606cSSage Weil struct list_head i_cap_delay_list; /* for delayed cap release to mds */ 291de57606cSSage Weil struct ceph_cap_reservation i_cap_migration_resv; 292de57606cSSage Weil struct list_head i_cap_snaps; /* snapped state pending flush to mds */ 2937d8cb26dSSage Weil struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or 2947d8cb26dSSage Weil dirty|flushing caps */ 295de57606cSSage Weil unsigned i_snap_caps; /* cap bits for snapped files */ 29611df2dfbSYan, Zheng unsigned i_cap_exporting_issued; 297de57606cSSage Weil 298de57606cSSage Weil int i_nr_by_mode[CEPH_FILE_MODE_NUM]; /* open file counts */ 299de57606cSSage Weil 300b0d7c223SYan, Zheng struct mutex i_truncate_mutex; 301de57606cSSage Weil u32 i_truncate_seq; /* last truncate to smaller size */ 302de57606cSSage Weil u64 i_truncate_size; /* and the size we last truncated down to */ 303de57606cSSage Weil int i_truncate_pending; /* still need to call vmtruncate */ 304de57606cSSage Weil 305de57606cSSage Weil u64 i_max_size; /* max file size authorized by mds */ 306de57606cSSage Weil u64 i_reported_size; /* (max_)size reported to or requested of mds */ 307de57606cSSage Weil u64 i_wanted_max_size; /* offset we'd like to write too */ 308de57606cSSage Weil u64 i_requested_max_size; /* max_size we've requested */ 309de57606cSSage Weil 310de57606cSSage Weil /* held references to caps */ 311de57606cSSage Weil int i_pin_ref; 312d3d0720dSHenry C Chang int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref; 313de57606cSSage Weil int i_wrbuffer_ref, i_wrbuffer_ref_head; 314de57606cSSage Weil u32 i_shared_gen; /* increment each time we get FILE_SHARED */ 315cd045cb4SSage Weil u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ 316de57606cSSage Weil u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ 317de57606cSSage Weil 318de57606cSSage Weil struct list_head i_unsafe_writes; /* uncommitted sync writes */ 319de57606cSSage Weil struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ 320de57606cSSage Weil spinlock_t i_unsafe_lock; 321de57606cSSage Weil 322de57606cSSage Weil struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ 323de57606cSSage Weil int i_snap_realm_counter; /* snap realm (if caps) */ 324de57606cSSage Weil struct list_head i_snap_realm_item; 325de57606cSSage Weil struct list_head i_snap_flush_item; 326de57606cSSage Weil 327de57606cSSage Weil struct work_struct i_wb_work; /* writeback work */ 328de57606cSSage Weil struct work_struct i_pg_inv_work; /* page invalidation work */ 329de57606cSSage Weil 330de57606cSSage Weil struct work_struct i_vmtruncate_work; 331de57606cSSage Weil 33299ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 33399ccbd22SMilosz Tanski struct fscache_cookie *fscache; 33499ccbd22SMilosz Tanski u32 i_fscache_gen; /* sequence, for delayed fscache validate */ 33599ccbd22SMilosz Tanski struct work_struct i_revalidate_work; 33699ccbd22SMilosz Tanski #endif 337de57606cSSage Weil struct inode vfs_inode; /* at end */ 338de57606cSSage Weil }; 339de57606cSSage Weil 340de57606cSSage Weil static inline struct ceph_inode_info *ceph_inode(struct inode *inode) 341de57606cSSage Weil { 342fbbccec9SNoah Watkins return container_of(inode, struct ceph_inode_info, vfs_inode); 343de57606cSSage Weil } 344de57606cSSage Weil 345ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode) 346ad1fee96SYehuda Sadeh { 347ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)inode->i_sb->s_fs_info; 348ad1fee96SYehuda Sadeh } 349ad1fee96SYehuda Sadeh 350ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb) 351ad1fee96SYehuda Sadeh { 352ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)sb->s_fs_info; 353ad1fee96SYehuda Sadeh } 354ad1fee96SYehuda Sadeh 3553d14c5d2SYehuda Sadeh static inline struct ceph_vino ceph_vino(struct inode *inode) 3563d14c5d2SYehuda Sadeh { 3573d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino; 3583d14c5d2SYehuda Sadeh } 3593d14c5d2SYehuda Sadeh 3603d14c5d2SYehuda Sadeh /* 3613d14c5d2SYehuda Sadeh * ino_t is <64 bits on many architectures, blech. 3623d14c5d2SYehuda Sadeh * 363ad1fee96SYehuda Sadeh * i_ino (kernel inode) st_ino (userspace) 364ad1fee96SYehuda Sadeh * i386 32 32 365ad1fee96SYehuda Sadeh * x86_64+ino32 64 32 366ad1fee96SYehuda Sadeh * x86_64 64 64 367ad1fee96SYehuda Sadeh */ 3683310f754SAmon Ott static inline u32 ceph_ino_to_ino32(__u64 vino) 369ad1fee96SYehuda Sadeh { 3703310f754SAmon Ott u32 ino = vino & 0xffffffff; 3713310f754SAmon Ott ino ^= vino >> 32; 372ad1fee96SYehuda Sadeh if (!ino) 373a661fc56SAmon Ott ino = 2; 374ad1fee96SYehuda Sadeh return ino; 375ad1fee96SYehuda Sadeh } 376ad1fee96SYehuda Sadeh 377ad1fee96SYehuda Sadeh /* 378ad1fee96SYehuda Sadeh * kernel i_ino value 3793d14c5d2SYehuda Sadeh */ 3803d14c5d2SYehuda Sadeh static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) 3813d14c5d2SYehuda Sadeh { 3823d14c5d2SYehuda Sadeh #if BITS_PER_LONG == 32 3833310f754SAmon Ott return ceph_ino_to_ino32(vino.ino); 3843310f754SAmon Ott #else 3853310f754SAmon Ott return (ino_t)vino.ino; 3863d14c5d2SYehuda Sadeh #endif 3873d14c5d2SYehuda Sadeh } 3883d14c5d2SYehuda Sadeh 389ad1fee96SYehuda Sadeh /* 390ad1fee96SYehuda Sadeh * user-visible ino (stat, filldir) 391ad1fee96SYehuda Sadeh */ 392ad1fee96SYehuda Sadeh #if BITS_PER_LONG == 32 393ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 394ad1fee96SYehuda Sadeh { 395ad1fee96SYehuda Sadeh return ino; 396ad1fee96SYehuda Sadeh } 397ad1fee96SYehuda Sadeh #else 398ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 399ad1fee96SYehuda Sadeh { 400ad1fee96SYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32)) 401ad1fee96SYehuda Sadeh ino = ceph_ino_to_ino32(ino); 402ad1fee96SYehuda Sadeh return ino; 403ad1fee96SYehuda Sadeh } 404ad1fee96SYehuda Sadeh #endif 405ad1fee96SYehuda Sadeh 406ad1fee96SYehuda Sadeh 4073d14c5d2SYehuda Sadeh /* for printf-style formatting */ 4083d14c5d2SYehuda Sadeh #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap 4093d14c5d2SYehuda Sadeh 4103d14c5d2SYehuda Sadeh static inline u64 ceph_ino(struct inode *inode) 4113d14c5d2SYehuda Sadeh { 4123d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.ino; 4133d14c5d2SYehuda Sadeh } 4143d14c5d2SYehuda Sadeh static inline u64 ceph_snap(struct inode *inode) 4153d14c5d2SYehuda Sadeh { 4163d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.snap; 4173d14c5d2SYehuda Sadeh } 4183d14c5d2SYehuda Sadeh 4193d14c5d2SYehuda Sadeh static inline int ceph_ino_compare(struct inode *inode, void *data) 4203d14c5d2SYehuda Sadeh { 4213d14c5d2SYehuda Sadeh struct ceph_vino *pvino = (struct ceph_vino *)data; 4223d14c5d2SYehuda Sadeh struct ceph_inode_info *ci = ceph_inode(inode); 4233d14c5d2SYehuda Sadeh return ci->i_vino.ino == pvino->ino && 4243d14c5d2SYehuda Sadeh ci->i_vino.snap == pvino->snap; 4253d14c5d2SYehuda Sadeh } 4263d14c5d2SYehuda Sadeh 4273d14c5d2SYehuda Sadeh static inline struct inode *ceph_find_inode(struct super_block *sb, 4283d14c5d2SYehuda Sadeh struct ceph_vino vino) 4293d14c5d2SYehuda Sadeh { 4303d14c5d2SYehuda Sadeh ino_t t = ceph_vino_to_ino(vino); 4313d14c5d2SYehuda Sadeh return ilookup5(sb, t, ceph_ino_compare, &vino); 4323d14c5d2SYehuda Sadeh } 4333d14c5d2SYehuda Sadeh 4343d14c5d2SYehuda Sadeh 4353d14c5d2SYehuda Sadeh /* 4363d14c5d2SYehuda Sadeh * Ceph inode. 4373d14c5d2SYehuda Sadeh */ 4383d14c5d2SYehuda Sadeh #define CEPH_I_NODELAY 4 /* do not delay cap release */ 4393d14c5d2SYehuda Sadeh #define CEPH_I_FLUSH 8 /* do not delay flush of dirty metadata */ 4403d14c5d2SYehuda Sadeh #define CEPH_I_NOFLUSH 16 /* do not flush dirty caps */ 4413d14c5d2SYehuda Sadeh 4422f276c51SYan, Zheng static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, 4432f276c51SYan, Zheng int release_count) 444de57606cSSage Weil { 4452f276c51SYan, Zheng atomic_set(&ci->i_complete_count, release_count); 446de57606cSSage Weil } 447de57606cSSage Weil 4482f276c51SYan, Zheng static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) 449de57606cSSage Weil { 4502f276c51SYan, Zheng atomic_inc(&ci->i_release_count); 451de57606cSSage Weil } 452de57606cSSage Weil 4532f276c51SYan, Zheng static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) 454de57606cSSage Weil { 4552f276c51SYan, Zheng return atomic_read(&ci->i_complete_count) == 4562f276c51SYan, Zheng atomic_read(&ci->i_release_count); 4572f276c51SYan, Zheng } 458de57606cSSage Weil 4592f276c51SYan, Zheng static inline void ceph_dir_clear_complete(struct inode *inode) 4602f276c51SYan, Zheng { 4612f276c51SYan, Zheng __ceph_dir_clear_complete(ceph_inode(inode)); 4622f276c51SYan, Zheng } 4632f276c51SYan, Zheng 4642f276c51SYan, Zheng static inline bool ceph_dir_is_complete(struct inode *inode) 4652f276c51SYan, Zheng { 4662f276c51SYan, Zheng return __ceph_dir_is_complete(ceph_inode(inode)); 467de57606cSSage Weil } 468de57606cSSage Weil 469de57606cSSage Weil 470de57606cSSage Weil /* find a specific frag @f */ 471de57606cSSage Weil extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, 472de57606cSSage Weil u32 f); 473de57606cSSage Weil 474de57606cSSage Weil /* 475de57606cSSage Weil * choose fragment for value @v. copy frag content to pfrag, if leaf 476de57606cSSage Weil * exists 477de57606cSSage Weil */ 478de57606cSSage Weil extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 479de57606cSSage Weil struct ceph_inode_frag *pfrag, 480de57606cSSage Weil int *found); 481de57606cSSage Weil 482de57606cSSage Weil static inline struct ceph_dentry_info *ceph_dentry(struct dentry *dentry) 483de57606cSSage Weil { 484de57606cSSage Weil return (struct ceph_dentry_info *)dentry->d_fsdata; 485de57606cSSage Weil } 486de57606cSSage Weil 487de57606cSSage Weil static inline loff_t ceph_make_fpos(unsigned frag, unsigned off) 488de57606cSSage Weil { 489de57606cSSage Weil return ((loff_t)frag << 32) | (loff_t)off; 490de57606cSSage Weil } 491de57606cSSage Weil 492de57606cSSage Weil /* 493de57606cSSage Weil * caps helpers 494de57606cSSage Weil */ 495de57606cSSage Weil static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) 496de57606cSSage Weil { 497de57606cSSage Weil return !RB_EMPTY_ROOT(&ci->i_caps); 498de57606cSSage Weil } 499de57606cSSage Weil 500de57606cSSage Weil extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); 501de57606cSSage Weil extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); 502de57606cSSage Weil extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, 503de57606cSSage Weil struct ceph_cap *cap); 504de57606cSSage Weil 505de57606cSSage Weil static inline int ceph_caps_issued(struct ceph_inode_info *ci) 506de57606cSSage Weil { 507de57606cSSage Weil int issued; 508be655596SSage Weil spin_lock(&ci->i_ceph_lock); 509de57606cSSage Weil issued = __ceph_caps_issued(ci, NULL); 510be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 511de57606cSSage Weil return issued; 512de57606cSSage Weil } 513de57606cSSage Weil 514de57606cSSage Weil static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, 515de57606cSSage Weil int touch) 516de57606cSSage Weil { 517de57606cSSage Weil int r; 518be655596SSage Weil spin_lock(&ci->i_ceph_lock); 519de57606cSSage Weil r = __ceph_caps_issued_mask(ci, mask, touch); 520be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 521de57606cSSage Weil return r; 522de57606cSSage Weil } 523de57606cSSage Weil 524de57606cSSage Weil static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) 525de57606cSSage Weil { 526de57606cSSage Weil return ci->i_dirty_caps | ci->i_flushing_caps; 527de57606cSSage Weil } 528fca65b4aSSage Weil extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask); 529de57606cSSage Weil 5309563f88cSYan, Zheng extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, 5319563f88cSYan, Zheng struct ceph_cap *ocap, int mask); 532de57606cSSage Weil extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); 533de57606cSSage Weil extern int __ceph_caps_used(struct ceph_inode_info *ci); 534de57606cSSage Weil 535de57606cSSage Weil extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); 536de57606cSSage Weil 537de57606cSSage Weil /* 538de57606cSSage Weil * wanted, by virtue of open file modes AND cap refs (buffered/cached data) 539de57606cSSage Weil */ 540de57606cSSage Weil static inline int __ceph_caps_wanted(struct ceph_inode_info *ci) 541de57606cSSage Weil { 542de57606cSSage Weil int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci); 543de57606cSSage Weil if (w & CEPH_CAP_FILE_BUFFER) 544de57606cSSage Weil w |= CEPH_CAP_FILE_EXCL; /* we want EXCL if dirty data */ 545de57606cSSage Weil return w; 546de57606cSSage Weil } 547de57606cSSage Weil 548de57606cSSage Weil /* what the mds thinks we want */ 549de57606cSSage Weil extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci); 550de57606cSSage Weil 55137151668SYehuda Sadeh extern void ceph_caps_init(struct ceph_mds_client *mdsc); 55237151668SYehuda Sadeh extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); 55337151668SYehuda Sadeh extern void ceph_adjust_min_caps(struct ceph_mds_client *mdsc, int delta); 55493faca6eSmajianpeng extern void ceph_reserve_caps(struct ceph_mds_client *mdsc, 55537151668SYehuda Sadeh struct ceph_cap_reservation *ctx, int need); 55637151668SYehuda Sadeh extern int ceph_unreserve_caps(struct ceph_mds_client *mdsc, 55737151668SYehuda Sadeh struct ceph_cap_reservation *ctx); 5583d14c5d2SYehuda Sadeh extern void ceph_reservation_status(struct ceph_fs_client *client, 559de57606cSSage Weil int *total, int *avail, int *used, 56085ccce43SSage Weil int *reserved, int *min); 561de57606cSSage Weil 562de57606cSSage Weil 563de57606cSSage Weil 564de57606cSSage Weil /* 565de57606cSSage Weil * we keep buffered readdir results attached to file->private_data 566de57606cSSage Weil */ 5674918b6d1SSage Weil #define CEPH_F_SYNC 1 5689cfa1098SSage Weil #define CEPH_F_ATEND 2 5694918b6d1SSage Weil 570de57606cSSage Weil struct ceph_file_info { 571252c6728SSage Weil short fmode; /* initialized on open */ 572252c6728SSage Weil short flags; /* CEPH_F_* */ 573de57606cSSage Weil 574de57606cSSage Weil /* readdir: position within the dir */ 575de57606cSSage Weil u32 frag; 576de57606cSSage Weil struct ceph_mds_request *last_readdir; 577de57606cSSage Weil 578de57606cSSage Weil /* readdir: position within a frag */ 579de57606cSSage Weil unsigned offset; /* offset of last chunk, adjusted for . and .. */ 580de57606cSSage Weil u64 next_offset; /* offset of next chunk (last_name's + 1) */ 581de57606cSSage Weil char *last_name; /* last entry in previous chunk */ 582de57606cSSage Weil struct dentry *dentry; /* next dentry (for dcache readdir) */ 5832f276c51SYan, Zheng int dir_release_count; 584de57606cSSage Weil 585de57606cSSage Weil /* used for -o dirstat read() on directory thing */ 586de57606cSSage Weil char *dir_info; 587de57606cSSage Weil int dir_info_len; 588de57606cSSage Weil }; 589de57606cSSage Weil 590de57606cSSage Weil 591de57606cSSage Weil 592de57606cSSage Weil /* 593de57606cSSage Weil * A "snap realm" describes a subset of the file hierarchy sharing 594de57606cSSage Weil * the same set of snapshots that apply to it. The realms themselves 595de57606cSSage Weil * are organized into a hierarchy, such that children inherit (some of) 596de57606cSSage Weil * the snapshots of their parents. 597de57606cSSage Weil * 598de57606cSSage Weil * All inodes within the realm that have capabilities are linked into a 599de57606cSSage Weil * per-realm list. 600de57606cSSage Weil */ 601de57606cSSage Weil struct ceph_snap_realm { 602de57606cSSage Weil u64 ino; 603de57606cSSage Weil atomic_t nref; 604a105f00cSSage Weil struct rb_node node; 605a105f00cSSage Weil 606de57606cSSage Weil u64 created, seq; 607de57606cSSage Weil u64 parent_ino; 608de57606cSSage Weil u64 parent_since; /* snapid when our current parent became so */ 609de57606cSSage Weil 610de57606cSSage Weil u64 *prior_parent_snaps; /* snaps inherited from any parents we */ 611aa711ee3SAlex Elder u32 num_prior_parent_snaps; /* had prior to parent_since */ 612de57606cSSage Weil u64 *snaps; /* snaps specific to this realm */ 613aa711ee3SAlex Elder u32 num_snaps; 614de57606cSSage Weil 615de57606cSSage Weil struct ceph_snap_realm *parent; 616de57606cSSage Weil struct list_head children; /* list of child realms */ 617de57606cSSage Weil struct list_head child_item; 618de57606cSSage Weil 619de57606cSSage Weil struct list_head empty_item; /* if i have ref==0 */ 620de57606cSSage Weil 621ae00d4f3SSage Weil struct list_head dirty_item; /* if realm needs new context */ 622ae00d4f3SSage Weil 623de57606cSSage Weil /* the current set of snaps for this realm */ 624de57606cSSage Weil struct ceph_snap_context *cached_context; 625de57606cSSage Weil 626de57606cSSage Weil struct list_head inodes_with_caps; 627de57606cSSage Weil spinlock_t inodes_with_caps_lock; 628de57606cSSage Weil }; 629de57606cSSage Weil 6303d14c5d2SYehuda Sadeh static inline int default_congestion_kb(void) 6313d14c5d2SYehuda Sadeh { 6323d14c5d2SYehuda Sadeh int congestion_kb; 633de57606cSSage Weil 634de57606cSSage Weil /* 6353d14c5d2SYehuda Sadeh * Copied from NFS 6363d14c5d2SYehuda Sadeh * 6373d14c5d2SYehuda Sadeh * congestion size, scale with available memory. 6383d14c5d2SYehuda Sadeh * 6393d14c5d2SYehuda Sadeh * 64MB: 8192k 6403d14c5d2SYehuda Sadeh * 128MB: 11585k 6413d14c5d2SYehuda Sadeh * 256MB: 16384k 6423d14c5d2SYehuda Sadeh * 512MB: 23170k 6433d14c5d2SYehuda Sadeh * 1GB: 32768k 6443d14c5d2SYehuda Sadeh * 2GB: 46340k 6453d14c5d2SYehuda Sadeh * 4GB: 65536k 6463d14c5d2SYehuda Sadeh * 8GB: 92681k 6473d14c5d2SYehuda Sadeh * 16GB: 131072k 6483d14c5d2SYehuda Sadeh * 6493d14c5d2SYehuda Sadeh * This allows larger machines to have larger/more transfers. 6503d14c5d2SYehuda Sadeh * Limit the default to 256M 651de57606cSSage Weil */ 6523d14c5d2SYehuda Sadeh congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10); 6533d14c5d2SYehuda Sadeh if (congestion_kb > 256*1024) 6543d14c5d2SYehuda Sadeh congestion_kb = 256*1024; 6553d14c5d2SYehuda Sadeh 6563d14c5d2SYehuda Sadeh return congestion_kb; 657de57606cSSage Weil } 658de57606cSSage Weil 659de57606cSSage Weil 660de57606cSSage Weil 661de57606cSSage Weil /* snap.c */ 662de57606cSSage Weil struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, 663de57606cSSage Weil u64 ino); 664de57606cSSage Weil extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, 665de57606cSSage Weil struct ceph_snap_realm *realm); 666de57606cSSage Weil extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, 667de57606cSSage Weil struct ceph_snap_realm *realm); 668de57606cSSage Weil extern int ceph_update_snap_trace(struct ceph_mds_client *m, 669de57606cSSage Weil void *p, void *e, bool deletion); 670de57606cSSage Weil extern void ceph_handle_snap(struct ceph_mds_client *mdsc, 6712600d2ddSSage Weil struct ceph_mds_session *session, 672de57606cSSage Weil struct ceph_msg *msg); 673fc837c8fSSage Weil extern void ceph_queue_cap_snap(struct ceph_inode_info *ci); 674de57606cSSage Weil extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, 675de57606cSSage Weil struct ceph_cap_snap *capsnap); 676de57606cSSage Weil extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); 677de57606cSSage Weil 678de57606cSSage Weil /* 679de57606cSSage Weil * a cap_snap is "pending" if it is still awaiting an in-progress 680de57606cSSage Weil * sync write (that may/may not still update size, mtime, etc.). 681de57606cSSage Weil */ 682de57606cSSage Weil static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) 683de57606cSSage Weil { 684de57606cSSage Weil return !list_empty(&ci->i_cap_snaps) && 685de57606cSSage Weil list_entry(ci->i_cap_snaps.prev, struct ceph_cap_snap, 686de57606cSSage Weil ci_item)->writing; 687de57606cSSage Weil } 688de57606cSSage Weil 689de57606cSSage Weil /* inode.c */ 690de57606cSSage Weil extern const struct inode_operations ceph_file_iops; 691de57606cSSage Weil 692de57606cSSage Weil extern struct inode *ceph_alloc_inode(struct super_block *sb); 693de57606cSSage Weil extern void ceph_destroy_inode(struct inode *inode); 6949f12bd11SYan, Zheng extern int ceph_drop_inode(struct inode *inode); 695de57606cSSage Weil 696de57606cSSage Weil extern struct inode *ceph_get_inode(struct super_block *sb, 697de57606cSSage Weil struct ceph_vino vino); 698de57606cSSage Weil extern struct inode *ceph_get_snapdir(struct inode *parent); 699de57606cSSage Weil extern int ceph_fill_file_size(struct inode *inode, int issued, 700de57606cSSage Weil u32 truncate_seq, u64 truncate_size, u64 size); 701de57606cSSage Weil extern void ceph_fill_file_time(struct inode *inode, int issued, 702de57606cSSage Weil u64 time_warp_seq, struct timespec *ctime, 703de57606cSSage Weil struct timespec *mtime, struct timespec *atime); 704de57606cSSage Weil extern int ceph_fill_trace(struct super_block *sb, 705de57606cSSage Weil struct ceph_mds_request *req, 706de57606cSSage Weil struct ceph_mds_session *session); 707de57606cSSage Weil extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, 708de57606cSSage Weil struct ceph_mds_session *session); 709de57606cSSage Weil 710de57606cSSage Weil extern int ceph_inode_holds_cap(struct inode *inode, int mask); 711de57606cSSage Weil 712de57606cSSage Weil extern int ceph_inode_set_size(struct inode *inode, loff_t size); 713b415bf4fSYan, Zheng extern void __ceph_do_pending_vmtruncate(struct inode *inode); 7143c6f6b79SSage Weil extern void ceph_queue_vmtruncate(struct inode *inode); 7153c6f6b79SSage Weil 7163c6f6b79SSage Weil extern void ceph_queue_invalidate(struct inode *inode); 7173c6f6b79SSage Weil extern void ceph_queue_writeback(struct inode *inode); 718de57606cSSage Weil 719de57606cSSage Weil extern int ceph_do_getattr(struct inode *inode, int mask); 72010556cb2SAl Viro extern int ceph_permission(struct inode *inode, int mask); 721de57606cSSage Weil extern int ceph_setattr(struct dentry *dentry, struct iattr *attr); 722de57606cSSage Weil extern int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, 723de57606cSSage Weil struct kstat *stat); 724de57606cSSage Weil 725de57606cSSage Weil /* xattr.c */ 726de57606cSSage Weil extern int ceph_setxattr(struct dentry *, const char *, const void *, 727de57606cSSage Weil size_t, int); 7287221fe4cSGuangliang Zhao int __ceph_setxattr(struct dentry *, const char *, const void *, size_t, int); 7297221fe4cSGuangliang Zhao ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); 7307221fe4cSGuangliang Zhao int __ceph_removexattr(struct dentry *, const char *); 731de57606cSSage Weil extern ssize_t ceph_getxattr(struct dentry *, const char *, void *, size_t); 732de57606cSSage Weil extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); 733de57606cSSage Weil extern int ceph_removexattr(struct dentry *, const char *); 734de57606cSSage Weil extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci); 735de57606cSSage Weil extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); 7363ce6cd12SAlex Elder extern void __init ceph_xattr_init(void); 7373ce6cd12SAlex Elder extern void ceph_xattr_exit(void); 738de57606cSSage Weil 7397221fe4cSGuangliang Zhao /* acl.c */ 7407221fe4cSGuangliang Zhao extern const struct xattr_handler *ceph_xattr_handlers[]; 7417221fe4cSGuangliang Zhao 7427221fe4cSGuangliang Zhao #ifdef CONFIG_CEPH_FS_POSIX_ACL 7437221fe4cSGuangliang Zhao 7447221fe4cSGuangliang Zhao struct posix_acl *ceph_get_acl(struct inode *, int); 74572466d0bSSage Weil int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type); 7467221fe4cSGuangliang Zhao int ceph_init_acl(struct dentry *, struct inode *, struct inode *); 747*c969d9bfSGuangliang Zhao 748*c969d9bfSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 749*c969d9bfSGuangliang Zhao { 750*c969d9bfSGuangliang Zhao forget_all_cached_acls(inode); 751*c969d9bfSGuangliang Zhao } 7527221fe4cSGuangliang Zhao 7537221fe4cSGuangliang Zhao #else 7547221fe4cSGuangliang Zhao 7557221fe4cSGuangliang Zhao #define ceph_get_acl NULL 75672466d0bSSage Weil #define ceph_set_acl NULL 7577221fe4cSGuangliang Zhao 7587221fe4cSGuangliang Zhao static inline int ceph_init_acl(struct dentry *dentry, struct inode *inode, 7597221fe4cSGuangliang Zhao struct inode *dir) 7607221fe4cSGuangliang Zhao { 7617221fe4cSGuangliang Zhao return 0; 7627221fe4cSGuangliang Zhao } 7637221fe4cSGuangliang Zhao 7647221fe4cSGuangliang Zhao static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) 7657221fe4cSGuangliang Zhao { 7667221fe4cSGuangliang Zhao return 0; 7677221fe4cSGuangliang Zhao } 7687221fe4cSGuangliang Zhao 7697221fe4cSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 7707221fe4cSGuangliang Zhao { 7717221fe4cSGuangliang Zhao } 7727221fe4cSGuangliang Zhao 7737221fe4cSGuangliang Zhao #endif 7747221fe4cSGuangliang Zhao 775de57606cSSage Weil /* caps.c */ 776de57606cSSage Weil extern const char *ceph_cap_string(int c); 777de57606cSSage Weil extern void ceph_handle_caps(struct ceph_mds_session *session, 778de57606cSSage Weil struct ceph_msg *msg); 779de57606cSSage Weil extern int ceph_add_cap(struct inode *inode, 780de57606cSSage Weil struct ceph_mds_session *session, u64 cap_id, 781de57606cSSage Weil int fmode, unsigned issued, unsigned wanted, 782de57606cSSage Weil unsigned cap, unsigned seq, u64 realmino, int flags, 783de57606cSSage Weil struct ceph_cap_reservation *caps_reservation); 784a096b09aSYan, Zheng extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); 78537151668SYehuda Sadeh extern void ceph_put_cap(struct ceph_mds_client *mdsc, 78637151668SYehuda Sadeh struct ceph_cap *cap); 7879215aeeaSYan, Zheng extern int ceph_is_any_caps(struct inode *inode); 788de57606cSSage Weil 789d40ee0dcSYan, Zheng extern void __queue_cap_release(struct ceph_mds_session *session, u64 ino, 790d40ee0dcSYan, Zheng u64 cap_id, u32 migrate_seq, u32 issue_seq); 791de57606cSSage Weil extern void ceph_queue_caps_release(struct inode *inode); 792f1a3d572SStephen Rothwell extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); 79302c24a82SJosef Bacik extern int ceph_fsync(struct file *file, loff_t start, loff_t end, 79402c24a82SJosef Bacik int datasync); 795de57606cSSage Weil extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, 796de57606cSSage Weil struct ceph_mds_session *session); 7972bc50259SGreg Farnum extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, 7982bc50259SGreg Farnum int mds); 799de57606cSSage Weil extern int ceph_get_cap_mds(struct inode *inode); 800de57606cSSage Weil extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); 801de57606cSSage Weil extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); 802de57606cSSage Weil extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, 803de57606cSSage Weil struct ceph_snap_context *snapc); 804de57606cSSage Weil extern void __ceph_flush_snaps(struct ceph_inode_info *ci, 805e835124cSSage Weil struct ceph_mds_session **psession, 806e835124cSSage Weil int again); 807de57606cSSage Weil extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, 808de57606cSSage Weil struct ceph_mds_session *session); 809afcdaea3SSage Weil extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc); 810afcdaea3SSage Weil extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); 811de57606cSSage Weil 812de57606cSSage Weil extern int ceph_encode_inode_release(void **p, struct inode *inode, 813de57606cSSage Weil int mds, int drop, int unless, int force); 814de57606cSSage Weil extern int ceph_encode_dentry_release(void **p, struct dentry *dn, 815de57606cSSage Weil int mds, int drop, int unless); 816de57606cSSage Weil 817de57606cSSage Weil extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, 818de57606cSSage Weil int *got, loff_t endoff); 819de57606cSSage Weil 820de57606cSSage Weil /* for counting open files by mode */ 821de57606cSSage Weil static inline void __ceph_get_fmode(struct ceph_inode_info *ci, int mode) 822de57606cSSage Weil { 823de57606cSSage Weil ci->i_nr_by_mode[mode]++; 824de57606cSSage Weil } 825de57606cSSage Weil extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode); 826de57606cSSage Weil 827de57606cSSage Weil /* addr.c */ 828de57606cSSage Weil extern const struct address_space_operations ceph_aops; 829de57606cSSage Weil extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); 830de57606cSSage Weil 831de57606cSSage Weil /* file.c */ 832de57606cSSage Weil extern const struct file_operations ceph_file_fops; 833de57606cSSage Weil extern const struct address_space_operations ceph_aops; 8349e0eb85dSAlex Elder 835de57606cSSage Weil extern int ceph_open(struct inode *inode, struct file *file); 8365ef50c3bSSage Weil extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, 8375ef50c3bSSage Weil struct file *file, unsigned flags, umode_t mode, 8385ef50c3bSSage Weil int *opened); 839de57606cSSage Weil extern int ceph_release(struct inode *inode, struct file *filp); 840de57606cSSage Weil 841de57606cSSage Weil /* dir.c */ 842de57606cSSage Weil extern const struct file_operations ceph_dir_fops; 843de57606cSSage Weil extern const struct inode_operations ceph_dir_iops; 84452dfb8acSSage Weil extern const struct dentry_operations ceph_dentry_ops, ceph_snap_dentry_ops, 845de57606cSSage Weil ceph_snapdir_dentry_ops; 846de57606cSSage Weil 847de57606cSSage Weil extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); 848468640e3SSage Weil extern int ceph_handle_snapdir(struct ceph_mds_request *req, 849468640e3SSage Weil struct dentry *dentry, int err); 850de57606cSSage Weil extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, 851de57606cSSage Weil struct dentry *dentry, int err); 852de57606cSSage Weil 853de57606cSSage Weil extern void ceph_dentry_lru_add(struct dentry *dn); 854de57606cSSage Weil extern void ceph_dentry_lru_touch(struct dentry *dn); 855de57606cSSage Weil extern void ceph_dentry_lru_del(struct dentry *dn); 85681a6cf2dSSage Weil extern void ceph_invalidate_dentry_lease(struct dentry *dentry); 857e5f86dc3SSage Weil extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); 8585f21c96dSSage Weil extern struct inode *ceph_get_dentry_parent_inode(struct dentry *dentry); 859de57606cSSage Weil 860de57606cSSage Weil /* 861de57606cSSage Weil * our d_ops vary depending on whether the inode is live, 862de57606cSSage Weil * snapshotted (read-only), or a virtual ".snap" directory. 863de57606cSSage Weil */ 864de57606cSSage Weil int ceph_init_dentry(struct dentry *dentry); 865de57606cSSage Weil 866de57606cSSage Weil 867de57606cSSage Weil /* ioctl.c */ 868de57606cSSage Weil extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 869de57606cSSage Weil 870de57606cSSage Weil /* export.c */ 871de57606cSSage Weil extern const struct export_operations ceph_export_ops; 872de57606cSSage Weil 87340819f6fSGreg Farnum /* locks.c */ 87440819f6fSGreg Farnum extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); 87540819f6fSGreg Farnum extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); 87640819f6fSGreg Farnum extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); 87739be95e9SJim Schutt extern int ceph_encode_locks_to_buffer(struct inode *inode, 87839be95e9SJim Schutt struct ceph_filelock *flocks, 87939be95e9SJim Schutt int num_fcntl_locks, 88039be95e9SJim Schutt int num_flock_locks); 88139be95e9SJim Schutt extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, 88239be95e9SJim Schutt struct ceph_pagelist *pagelist, 88339be95e9SJim Schutt int num_fcntl_locks, int num_flock_locks); 88440819f6fSGreg Farnum extern int lock_to_ceph_filelock(struct file_lock *fl, struct ceph_filelock *c); 88540819f6fSGreg Farnum 8863d14c5d2SYehuda Sadeh /* debugfs.c */ 8873d14c5d2SYehuda Sadeh extern int ceph_fs_debugfs_init(struct ceph_fs_client *client); 8883d14c5d2SYehuda Sadeh extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); 8893d14c5d2SYehuda Sadeh 890de57606cSSage Weil #endif /* _FS_CEPH_SUPER_H */ 891