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> 16c969d9bfSGuangliang 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 39*e2c3de04SYan, Zheng #define CEPH_MOUNT_OPT_DEFAULT (CEPH_MOUNT_OPT_RBYTES | \ 40*e2c3de04SYan, Zheng CEPH_MOUNT_OPT_DCACHE) 41de57606cSSage Weil 423d14c5d2SYehuda Sadeh #define ceph_set_mount_opt(fsc, opt) \ 433d14c5d2SYehuda Sadeh (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt; 443d14c5d2SYehuda Sadeh #define ceph_test_mount_opt(fsc, opt) \ 453d14c5d2SYehuda Sadeh (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) 46de57606cSSage Weil 4783817e35SSage Weil #define CEPH_RSIZE_DEFAULT 0 /* max read size */ 4883817e35SSage Weil #define CEPH_RASIZE_DEFAULT (8192*1024) /* readahead */ 493d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_DEFAULT 1024 503d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) 513d14c5d2SYehuda Sadeh #define CEPH_SNAPDIRNAME_DEFAULT ".snap" 52de57606cSSage Weil 533d14c5d2SYehuda Sadeh struct ceph_mount_options { 54de57606cSSage Weil int flags; 553d14c5d2SYehuda Sadeh int sb_flags; 563d14c5d2SYehuda Sadeh 5783817e35SSage Weil int wsize; /* max write size */ 5883817e35SSage Weil int rsize; /* max read size */ 5983817e35SSage Weil int rasize; /* max readahead */ 606e19a16eSSage Weil int congestion_kb; /* max writeback in flight */ 616e19a16eSSage Weil int caps_wanted_delay_min, caps_wanted_delay_max; 626e19a16eSSage Weil int cap_release_safety; 6323804d91SSage Weil int max_readdir; /* max readdir result (entires) */ 6423804d91SSage Weil int max_readdir_bytes; /* max readdir result (bytes) */ 653d14c5d2SYehuda Sadeh 663d14c5d2SYehuda Sadeh /* 673d14c5d2SYehuda Sadeh * everything above this point can be memcmp'd; everything below 683d14c5d2SYehuda Sadeh * is handled in compare_mount_options() 693d14c5d2SYehuda Sadeh */ 703d14c5d2SYehuda Sadeh 71de57606cSSage Weil char *snapdir_name; /* default ".snap" */ 72de57606cSSage Weil }; 73de57606cSSage Weil 743d14c5d2SYehuda Sadeh struct ceph_fs_client { 75de57606cSSage Weil struct super_block *sb; 76de57606cSSage Weil 773d14c5d2SYehuda Sadeh struct ceph_mount_options *mount_options; 783d14c5d2SYehuda Sadeh struct ceph_client *client; 793d14c5d2SYehuda Sadeh 80de57606cSSage Weil unsigned long mount_state; 8185ccce43SSage Weil int min_caps; /* min caps i added */ 8285ccce43SSage Weil 833d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc; 84de57606cSSage Weil 85de57606cSSage Weil /* writeback */ 86de57606cSSage Weil mempool_t *wb_pagevec_pool; 87de57606cSSage Weil struct workqueue_struct *wb_wq; 88de57606cSSage Weil struct workqueue_struct *pg_inv_wq; 89de57606cSSage Weil struct workqueue_struct *trunc_wq; 902baba250SYehuda Sadeh atomic_long_t writeback_count; 91de57606cSSage Weil 92de57606cSSage Weil struct backing_dev_info backing_dev_info; 930743304dSSage Weil 940743304dSSage Weil #ifdef CONFIG_DEBUG_FS 953d14c5d2SYehuda Sadeh struct dentry *debugfs_dentry_lru, *debugfs_caps; 962baba250SYehuda Sadeh struct dentry *debugfs_congestion_kb; 9706edf046SSage Weil struct dentry *debugfs_bdi; 983d14c5d2SYehuda Sadeh struct dentry *debugfs_mdsc, *debugfs_mdsmap; 9914ed9703SJohn Spray struct dentry *debugfs_mds_sessions; 1000743304dSSage Weil #endif 10199ccbd22SMilosz Tanski 10299ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 10399ccbd22SMilosz Tanski struct fscache_cookie *fscache; 10499ccbd22SMilosz Tanski struct workqueue_struct *revalidate_wq; 10599ccbd22SMilosz Tanski #endif 106de57606cSSage Weil }; 107de57606cSSage Weil 1083d14c5d2SYehuda Sadeh 109de57606cSSage Weil /* 110de57606cSSage Weil * File i/o capability. This tracks shared state with the metadata 111de57606cSSage Weil * server that allows us to cache or writeback attributes or to read 112de57606cSSage Weil * and write data. For any given inode, we should have one or more 113de57606cSSage Weil * capabilities, one issued by each metadata server, and our 114de57606cSSage Weil * cumulative access is the OR of all issued capabilities. 115de57606cSSage Weil * 116de57606cSSage Weil * Each cap is referenced by the inode's i_caps rbtree and by per-mds 117de57606cSSage Weil * session capability lists. 118de57606cSSage Weil */ 119de57606cSSage Weil struct ceph_cap { 120de57606cSSage Weil struct ceph_inode_info *ci; 121de57606cSSage Weil struct rb_node ci_node; /* per-ci cap tree */ 122de57606cSSage Weil struct ceph_mds_session *session; 123de57606cSSage Weil struct list_head session_caps; /* per-session caplist */ 124de57606cSSage Weil int mds; 125de57606cSSage Weil u64 cap_id; /* unique cap id (mds provided) */ 126de57606cSSage Weil int issued; /* latest, from the mds */ 127de57606cSSage Weil int implemented; /* implemented superset of issued (for revocation) */ 128de57606cSSage Weil int mds_wanted; 129685f9a5dSSage Weil u32 seq, issue_seq, mseq; 130685f9a5dSSage Weil u32 cap_gen; /* active/stale cycle */ 131de57606cSSage Weil unsigned long last_used; 132de57606cSSage Weil struct list_head caps_item; 133de57606cSSage Weil }; 134de57606cSSage Weil 135de57606cSSage Weil #define CHECK_CAPS_NODELAY 1 /* do not delay any further */ 136de57606cSSage Weil #define CHECK_CAPS_AUTHONLY 2 /* only check auth cap */ 137de57606cSSage Weil #define CHECK_CAPS_FLUSH 4 /* flush any dirty caps */ 138de57606cSSage Weil 139de57606cSSage Weil /* 140de57606cSSage Weil * Snapped cap state that is pending flush to mds. When a snapshot occurs, 141de57606cSSage Weil * we first complete any in-process sync writes and writeback any dirty 142de57606cSSage Weil * data before flushing the snapped state (tracked here) back to the MDS. 143de57606cSSage Weil */ 144de57606cSSage Weil struct ceph_cap_snap { 145de57606cSSage Weil atomic_t nref; 146de57606cSSage Weil struct ceph_inode_info *ci; 147de57606cSSage Weil struct list_head ci_item, flushing_item; 148de57606cSSage Weil 149de57606cSSage Weil u64 follows, flush_tid; 150de57606cSSage Weil int issued, dirty; 151de57606cSSage Weil struct ceph_snap_context *context; 152de57606cSSage Weil 1535706b27dSAl Viro umode_t mode; 15405cb11c1SEric W. Biederman kuid_t uid; 15505cb11c1SEric W. Biederman kgid_t gid; 156de57606cSSage Weil 1574a625be4SSage Weil struct ceph_buffer *xattr_blob; 158de57606cSSage Weil u64 xattr_version; 159de57606cSSage Weil 160de57606cSSage Weil u64 size; 161de57606cSSage Weil struct timespec mtime, atime, ctime; 162de57606cSSage Weil u64 time_warp_seq; 163de57606cSSage Weil int writing; /* a sync write is still in progress */ 164de57606cSSage Weil int dirty_pages; /* dirty pages awaiting writeback */ 165e20d258dSYan, Zheng bool inline_data; 166de57606cSSage Weil }; 167de57606cSSage Weil 168de57606cSSage Weil static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) 169de57606cSSage Weil { 1704a625be4SSage Weil if (atomic_dec_and_test(&capsnap->nref)) { 1714a625be4SSage Weil if (capsnap->xattr_blob) 1724a625be4SSage Weil ceph_buffer_put(capsnap->xattr_blob); 173de57606cSSage Weil kfree(capsnap); 174de57606cSSage Weil } 1754a625be4SSage Weil } 176de57606cSSage Weil 177de57606cSSage Weil /* 178de57606cSSage Weil * The frag tree describes how a directory is fragmented, potentially across 179de57606cSSage Weil * multiple metadata servers. It is also used to indicate points where 180de57606cSSage Weil * metadata authority is delegated, and whether/where metadata is replicated. 181de57606cSSage Weil * 182de57606cSSage Weil * A _leaf_ frag will be present in the i_fragtree IFF there is 183de57606cSSage Weil * delegation info. That is, if mds >= 0 || ndist > 0. 184de57606cSSage Weil */ 185de57606cSSage Weil #define CEPH_MAX_DIRFRAG_REP 4 186de57606cSSage Weil 187de57606cSSage Weil struct ceph_inode_frag { 188de57606cSSage Weil struct rb_node node; 189de57606cSSage Weil 190de57606cSSage Weil /* fragtree state */ 191de57606cSSage Weil u32 frag; 192de57606cSSage Weil int split_by; /* i.e. 2^(split_by) children */ 193de57606cSSage Weil 194de57606cSSage Weil /* delegation and replication info */ 195de57606cSSage Weil int mds; /* -1 if same authority as parent */ 196de57606cSSage Weil int ndist; /* >0 if replicated */ 197de57606cSSage Weil int dist[CEPH_MAX_DIRFRAG_REP]; 198de57606cSSage Weil }; 199de57606cSSage Weil 200de57606cSSage Weil /* 201de57606cSSage Weil * We cache inode xattrs as an encoded blob until they are first used, 202de57606cSSage Weil * at which point we parse them into an rbtree. 203de57606cSSage Weil */ 204de57606cSSage Weil struct ceph_inode_xattr { 205de57606cSSage Weil struct rb_node node; 206de57606cSSage Weil 207de57606cSSage Weil const char *name; 208de57606cSSage Weil int name_len; 209de57606cSSage Weil const char *val; 210de57606cSSage Weil int val_len; 211de57606cSSage Weil int dirty; 212de57606cSSage Weil 213de57606cSSage Weil int should_free_name; 214de57606cSSage Weil int should_free_val; 215de57606cSSage Weil }; 216de57606cSSage Weil 2173d14c5d2SYehuda Sadeh /* 2183d14c5d2SYehuda Sadeh * Ceph dentry state 2193d14c5d2SYehuda Sadeh */ 2203d14c5d2SYehuda Sadeh struct ceph_dentry_info { 2213d14c5d2SYehuda Sadeh struct ceph_mds_session *lease_session; 2223d14c5d2SYehuda Sadeh u32 lease_gen, lease_shared_gen; 2233d14c5d2SYehuda Sadeh u32 lease_seq; 2243d14c5d2SYehuda Sadeh unsigned long lease_renew_after, lease_renew_from; 2253d14c5d2SYehuda Sadeh struct list_head lru; 2263d14c5d2SYehuda Sadeh struct dentry *dentry; 2273d14c5d2SYehuda Sadeh u64 time; 2283d14c5d2SYehuda Sadeh u64 offset; 2293d14c5d2SYehuda Sadeh }; 2303d14c5d2SYehuda Sadeh 231de57606cSSage Weil struct ceph_inode_xattrs_info { 232de57606cSSage Weil /* 233de57606cSSage Weil * (still encoded) xattr blob. we avoid the overhead of parsing 234de57606cSSage Weil * this until someone actually calls getxattr, etc. 235de57606cSSage Weil * 236de57606cSSage Weil * blob->vec.iov_len == 4 implies there are no xattrs; blob == 237de57606cSSage Weil * NULL means we don't know. 238de57606cSSage Weil */ 239de57606cSSage Weil struct ceph_buffer *blob, *prealloc_blob; 240de57606cSSage Weil 241de57606cSSage Weil struct rb_root index; 242de57606cSSage Weil bool dirty; 243de57606cSSage Weil int count; 244de57606cSSage Weil int names_size; 245de57606cSSage Weil int vals_size; 246de57606cSSage Weil u64 version, index_version; 247de57606cSSage Weil }; 248de57606cSSage Weil 249de57606cSSage Weil /* 250de57606cSSage Weil * Ceph inode. 251de57606cSSage Weil */ 252de57606cSSage Weil struct ceph_inode_info { 253de57606cSSage Weil struct ceph_vino i_vino; /* ceph ino + snap */ 254de57606cSSage Weil 255be655596SSage Weil spinlock_t i_ceph_lock; 256be655596SSage Weil 257de57606cSSage Weil u64 i_version; 25831c542a1SYan, Zheng u64 i_inline_version; 259de57606cSSage Weil u32 i_time_warp_seq; 260de57606cSSage Weil 261de57606cSSage Weil unsigned i_ceph_flags; 26270db4f36SYan, Zheng int i_ordered_count; 2632f276c51SYan, Zheng atomic_t i_release_count; 2642f276c51SYan, Zheng atomic_t i_complete_count; 265de57606cSSage Weil 2666c0f3af7SSage Weil struct ceph_dir_layout i_dir_layout; 267de57606cSSage Weil struct ceph_file_layout i_layout; 268de57606cSSage Weil char *i_symlink; 269de57606cSSage Weil 270de57606cSSage Weil /* for dirs */ 271de57606cSSage Weil struct timespec i_rctime; 272de57606cSSage Weil u64 i_rbytes, i_rfiles, i_rsubdirs; 273de57606cSSage Weil u64 i_files, i_subdirs; 274de57606cSSage Weil 275de57606cSSage Weil struct rb_root i_fragtree; 276de57606cSSage Weil struct mutex i_fragtree_mutex; 277de57606cSSage Weil 278de57606cSSage Weil struct ceph_inode_xattrs_info i_xattrs; 279de57606cSSage Weil 280be655596SSage Weil /* capabilities. protected _both_ by i_ceph_lock and cap->session's 281de57606cSSage Weil * s_mutex. */ 282de57606cSSage Weil struct rb_root i_caps; /* cap list */ 283de57606cSSage Weil struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ 284de57606cSSage Weil unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ 285de57606cSSage Weil struct list_head i_dirty_item, i_flushing_item; 286de57606cSSage Weil u64 i_cap_flush_seq; 287de57606cSSage Weil /* we need to track cap writeback on a per-cap-bit basis, to allow 288de57606cSSage Weil * overlapping, pipelined cap flushes to the mds. we can probably 289de57606cSSage Weil * reduce the tid to 8 bits if we're concerned about inode size. */ 290de57606cSSage Weil u16 i_cap_flush_last_tid, i_cap_flush_tid[CEPH_CAP_BITS]; 291de57606cSSage Weil wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ 292de57606cSSage Weil unsigned long i_hold_caps_min; /* jiffies */ 293de57606cSSage Weil unsigned long i_hold_caps_max; /* jiffies */ 294de57606cSSage Weil struct list_head i_cap_delay_list; /* for delayed cap release to mds */ 295de57606cSSage Weil struct ceph_cap_reservation i_cap_migration_resv; 296de57606cSSage Weil struct list_head i_cap_snaps; /* snapped state pending flush to mds */ 2977d8cb26dSSage Weil struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or 2987d8cb26dSSage Weil dirty|flushing caps */ 299de57606cSSage Weil unsigned i_snap_caps; /* cap bits for snapped files */ 300de57606cSSage Weil 301de57606cSSage Weil int i_nr_by_mode[CEPH_FILE_MODE_NUM]; /* open file counts */ 302de57606cSSage Weil 303b0d7c223SYan, Zheng struct mutex i_truncate_mutex; 304de57606cSSage Weil u32 i_truncate_seq; /* last truncate to smaller size */ 305de57606cSSage Weil u64 i_truncate_size; /* and the size we last truncated down to */ 306de57606cSSage Weil int i_truncate_pending; /* still need to call vmtruncate */ 307de57606cSSage Weil 308de57606cSSage Weil u64 i_max_size; /* max file size authorized by mds */ 309de57606cSSage Weil u64 i_reported_size; /* (max_)size reported to or requested of mds */ 310de57606cSSage Weil u64 i_wanted_max_size; /* offset we'd like to write too */ 311de57606cSSage Weil u64 i_requested_max_size; /* max_size we've requested */ 312de57606cSSage Weil 313de57606cSSage Weil /* held references to caps */ 314de57606cSSage Weil int i_pin_ref; 315d3d0720dSHenry C Chang int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref; 316de57606cSSage Weil int i_wrbuffer_ref, i_wrbuffer_ref_head; 317de57606cSSage Weil u32 i_shared_gen; /* increment each time we get FILE_SHARED */ 318cd045cb4SSage Weil u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ 319de57606cSSage Weil u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ 320de57606cSSage Weil 321de57606cSSage Weil struct list_head i_unsafe_writes; /* uncommitted sync writes */ 322de57606cSSage Weil struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ 323de57606cSSage Weil spinlock_t i_unsafe_lock; 324de57606cSSage Weil 325de57606cSSage Weil struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ 326de57606cSSage Weil int i_snap_realm_counter; /* snap realm (if caps) */ 327de57606cSSage Weil struct list_head i_snap_realm_item; 328de57606cSSage Weil struct list_head i_snap_flush_item; 329de57606cSSage Weil 330de57606cSSage Weil struct work_struct i_wb_work; /* writeback work */ 331de57606cSSage Weil struct work_struct i_pg_inv_work; /* page invalidation work */ 332de57606cSSage Weil 333de57606cSSage Weil struct work_struct i_vmtruncate_work; 334de57606cSSage Weil 33599ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 33699ccbd22SMilosz Tanski struct fscache_cookie *fscache; 33799ccbd22SMilosz Tanski u32 i_fscache_gen; /* sequence, for delayed fscache validate */ 33899ccbd22SMilosz Tanski struct work_struct i_revalidate_work; 33999ccbd22SMilosz Tanski #endif 340de57606cSSage Weil struct inode vfs_inode; /* at end */ 341de57606cSSage Weil }; 342de57606cSSage Weil 343de57606cSSage Weil static inline struct ceph_inode_info *ceph_inode(struct inode *inode) 344de57606cSSage Weil { 345fbbccec9SNoah Watkins return container_of(inode, struct ceph_inode_info, vfs_inode); 346de57606cSSage Weil } 347de57606cSSage Weil 348ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode) 349ad1fee96SYehuda Sadeh { 350ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)inode->i_sb->s_fs_info; 351ad1fee96SYehuda Sadeh } 352ad1fee96SYehuda Sadeh 353ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb) 354ad1fee96SYehuda Sadeh { 355ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)sb->s_fs_info; 356ad1fee96SYehuda Sadeh } 357ad1fee96SYehuda Sadeh 3583d14c5d2SYehuda Sadeh static inline struct ceph_vino ceph_vino(struct inode *inode) 3593d14c5d2SYehuda Sadeh { 3603d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino; 3613d14c5d2SYehuda Sadeh } 3623d14c5d2SYehuda Sadeh 3633d14c5d2SYehuda Sadeh /* 3643d14c5d2SYehuda Sadeh * ino_t is <64 bits on many architectures, blech. 3653d14c5d2SYehuda Sadeh * 366ad1fee96SYehuda Sadeh * i_ino (kernel inode) st_ino (userspace) 367ad1fee96SYehuda Sadeh * i386 32 32 368ad1fee96SYehuda Sadeh * x86_64+ino32 64 32 369ad1fee96SYehuda Sadeh * x86_64 64 64 370ad1fee96SYehuda Sadeh */ 3713310f754SAmon Ott static inline u32 ceph_ino_to_ino32(__u64 vino) 372ad1fee96SYehuda Sadeh { 3733310f754SAmon Ott u32 ino = vino & 0xffffffff; 3743310f754SAmon Ott ino ^= vino >> 32; 375ad1fee96SYehuda Sadeh if (!ino) 376a661fc56SAmon Ott ino = 2; 377ad1fee96SYehuda Sadeh return ino; 378ad1fee96SYehuda Sadeh } 379ad1fee96SYehuda Sadeh 380ad1fee96SYehuda Sadeh /* 381ad1fee96SYehuda Sadeh * kernel i_ino value 3823d14c5d2SYehuda Sadeh */ 3833d14c5d2SYehuda Sadeh static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) 3843d14c5d2SYehuda Sadeh { 3853d14c5d2SYehuda Sadeh #if BITS_PER_LONG == 32 3863310f754SAmon Ott return ceph_ino_to_ino32(vino.ino); 3873310f754SAmon Ott #else 3883310f754SAmon Ott return (ino_t)vino.ino; 3893d14c5d2SYehuda Sadeh #endif 3903d14c5d2SYehuda Sadeh } 3913d14c5d2SYehuda Sadeh 392ad1fee96SYehuda Sadeh /* 393ad1fee96SYehuda Sadeh * user-visible ino (stat, filldir) 394ad1fee96SYehuda Sadeh */ 395ad1fee96SYehuda Sadeh #if BITS_PER_LONG == 32 396ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 397ad1fee96SYehuda Sadeh { 398ad1fee96SYehuda Sadeh return ino; 399ad1fee96SYehuda Sadeh } 400ad1fee96SYehuda Sadeh #else 401ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 402ad1fee96SYehuda Sadeh { 403ad1fee96SYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32)) 404ad1fee96SYehuda Sadeh ino = ceph_ino_to_ino32(ino); 405ad1fee96SYehuda Sadeh return ino; 406ad1fee96SYehuda Sadeh } 407ad1fee96SYehuda Sadeh #endif 408ad1fee96SYehuda Sadeh 409ad1fee96SYehuda Sadeh 4103d14c5d2SYehuda Sadeh /* for printf-style formatting */ 4113d14c5d2SYehuda Sadeh #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap 4123d14c5d2SYehuda Sadeh 4133d14c5d2SYehuda Sadeh static inline u64 ceph_ino(struct inode *inode) 4143d14c5d2SYehuda Sadeh { 4153d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.ino; 4163d14c5d2SYehuda Sadeh } 4173d14c5d2SYehuda Sadeh static inline u64 ceph_snap(struct inode *inode) 4183d14c5d2SYehuda Sadeh { 4193d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.snap; 4203d14c5d2SYehuda Sadeh } 4213d14c5d2SYehuda Sadeh 4223d14c5d2SYehuda Sadeh static inline int ceph_ino_compare(struct inode *inode, void *data) 4233d14c5d2SYehuda Sadeh { 4243d14c5d2SYehuda Sadeh struct ceph_vino *pvino = (struct ceph_vino *)data; 4253d14c5d2SYehuda Sadeh struct ceph_inode_info *ci = ceph_inode(inode); 4263d14c5d2SYehuda Sadeh return ci->i_vino.ino == pvino->ino && 4273d14c5d2SYehuda Sadeh ci->i_vino.snap == pvino->snap; 4283d14c5d2SYehuda Sadeh } 4293d14c5d2SYehuda Sadeh 4303d14c5d2SYehuda Sadeh static inline struct inode *ceph_find_inode(struct super_block *sb, 4313d14c5d2SYehuda Sadeh struct ceph_vino vino) 4323d14c5d2SYehuda Sadeh { 4333d14c5d2SYehuda Sadeh ino_t t = ceph_vino_to_ino(vino); 4343d14c5d2SYehuda Sadeh return ilookup5(sb, t, ceph_ino_compare, &vino); 4353d14c5d2SYehuda Sadeh } 4363d14c5d2SYehuda Sadeh 4373d14c5d2SYehuda Sadeh 4383d14c5d2SYehuda Sadeh /* 4393d14c5d2SYehuda Sadeh * Ceph inode. 4403d14c5d2SYehuda Sadeh */ 44170db4f36SYan, Zheng #define CEPH_I_DIR_ORDERED 1 /* dentries in dir are ordered */ 4423d14c5d2SYehuda Sadeh #define CEPH_I_NODELAY 4 /* do not delay cap release */ 4433d14c5d2SYehuda Sadeh #define CEPH_I_FLUSH 8 /* do not delay flush of dirty metadata */ 4443d14c5d2SYehuda Sadeh #define CEPH_I_NOFLUSH 16 /* do not flush dirty caps */ 4453d14c5d2SYehuda Sadeh 4462f276c51SYan, Zheng static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, 44770db4f36SYan, Zheng int release_count, int ordered_count) 448de57606cSSage Weil { 4492f276c51SYan, Zheng atomic_set(&ci->i_complete_count, release_count); 45070db4f36SYan, Zheng if (ci->i_ordered_count == ordered_count) 45170db4f36SYan, Zheng ci->i_ceph_flags |= CEPH_I_DIR_ORDERED; 45270db4f36SYan, Zheng else 45370db4f36SYan, Zheng ci->i_ceph_flags &= ~CEPH_I_DIR_ORDERED; 454de57606cSSage Weil } 455de57606cSSage Weil 4562f276c51SYan, Zheng static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) 457de57606cSSage Weil { 4582f276c51SYan, Zheng atomic_inc(&ci->i_release_count); 459de57606cSSage Weil } 460de57606cSSage Weil 4612f276c51SYan, Zheng static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) 462de57606cSSage Weil { 4632f276c51SYan, Zheng return atomic_read(&ci->i_complete_count) == 4642f276c51SYan, Zheng atomic_read(&ci->i_release_count); 4652f276c51SYan, Zheng } 466de57606cSSage Weil 46770db4f36SYan, Zheng static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) 46870db4f36SYan, Zheng { 46970db4f36SYan, Zheng return __ceph_dir_is_complete(ci) && 47070db4f36SYan, Zheng (ci->i_ceph_flags & CEPH_I_DIR_ORDERED); 47170db4f36SYan, Zheng } 47270db4f36SYan, Zheng 4732f276c51SYan, Zheng static inline void ceph_dir_clear_complete(struct inode *inode) 4742f276c51SYan, Zheng { 4752f276c51SYan, Zheng __ceph_dir_clear_complete(ceph_inode(inode)); 4762f276c51SYan, Zheng } 4772f276c51SYan, Zheng 47870db4f36SYan, Zheng static inline void ceph_dir_clear_ordered(struct inode *inode) 4792f276c51SYan, Zheng { 48070db4f36SYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 48170db4f36SYan, Zheng spin_lock(&ci->i_ceph_lock); 48270db4f36SYan, Zheng ci->i_ordered_count++; 48370db4f36SYan, Zheng ci->i_ceph_flags &= ~CEPH_I_DIR_ORDERED; 48470db4f36SYan, Zheng spin_unlock(&ci->i_ceph_lock); 485de57606cSSage Weil } 486de57606cSSage Weil 48770db4f36SYan, Zheng static inline bool ceph_dir_is_complete_ordered(struct inode *inode) 48870db4f36SYan, Zheng { 48970db4f36SYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 49070db4f36SYan, Zheng bool ret; 49170db4f36SYan, Zheng spin_lock(&ci->i_ceph_lock); 49270db4f36SYan, Zheng ret = __ceph_dir_is_complete_ordered(ci); 49370db4f36SYan, Zheng spin_unlock(&ci->i_ceph_lock); 49470db4f36SYan, Zheng return ret; 49570db4f36SYan, Zheng } 496de57606cSSage Weil 497de57606cSSage Weil /* find a specific frag @f */ 498de57606cSSage Weil extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, 499de57606cSSage Weil u32 f); 500de57606cSSage Weil 501de57606cSSage Weil /* 502de57606cSSage Weil * choose fragment for value @v. copy frag content to pfrag, if leaf 503de57606cSSage Weil * exists 504de57606cSSage Weil */ 505de57606cSSage Weil extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 506de57606cSSage Weil struct ceph_inode_frag *pfrag, 507de57606cSSage Weil int *found); 508de57606cSSage Weil 509de57606cSSage Weil static inline struct ceph_dentry_info *ceph_dentry(struct dentry *dentry) 510de57606cSSage Weil { 511de57606cSSage Weil return (struct ceph_dentry_info *)dentry->d_fsdata; 512de57606cSSage Weil } 513de57606cSSage Weil 514de57606cSSage Weil static inline loff_t ceph_make_fpos(unsigned frag, unsigned off) 515de57606cSSage Weil { 516de57606cSSage Weil return ((loff_t)frag << 32) | (loff_t)off; 517de57606cSSage Weil } 518de57606cSSage Weil 519de57606cSSage Weil /* 520de57606cSSage Weil * caps helpers 521de57606cSSage Weil */ 522de57606cSSage Weil static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) 523de57606cSSage Weil { 524de57606cSSage Weil return !RB_EMPTY_ROOT(&ci->i_caps); 525de57606cSSage Weil } 526de57606cSSage Weil 527de57606cSSage Weil extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); 528de57606cSSage Weil extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); 529de57606cSSage Weil extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, 530de57606cSSage Weil struct ceph_cap *cap); 531de57606cSSage Weil 532de57606cSSage Weil static inline int ceph_caps_issued(struct ceph_inode_info *ci) 533de57606cSSage Weil { 534de57606cSSage Weil int issued; 535be655596SSage Weil spin_lock(&ci->i_ceph_lock); 536de57606cSSage Weil issued = __ceph_caps_issued(ci, NULL); 537be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 538de57606cSSage Weil return issued; 539de57606cSSage Weil } 540de57606cSSage Weil 541de57606cSSage Weil static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, 542de57606cSSage Weil int touch) 543de57606cSSage Weil { 544de57606cSSage Weil int r; 545be655596SSage Weil spin_lock(&ci->i_ceph_lock); 546de57606cSSage Weil r = __ceph_caps_issued_mask(ci, mask, touch); 547be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 548de57606cSSage Weil return r; 549de57606cSSage Weil } 550de57606cSSage Weil 551de57606cSSage Weil static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) 552de57606cSSage Weil { 553de57606cSSage Weil return ci->i_dirty_caps | ci->i_flushing_caps; 554de57606cSSage Weil } 555fca65b4aSSage Weil extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask); 556de57606cSSage Weil 5579563f88cSYan, Zheng extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, 5589563f88cSYan, Zheng struct ceph_cap *ocap, int mask); 559de57606cSSage Weil extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); 560de57606cSSage Weil extern int __ceph_caps_used(struct ceph_inode_info *ci); 561de57606cSSage Weil 562de57606cSSage Weil extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); 563de57606cSSage Weil 564de57606cSSage Weil /* 565de57606cSSage Weil * wanted, by virtue of open file modes AND cap refs (buffered/cached data) 566de57606cSSage Weil */ 567de57606cSSage Weil static inline int __ceph_caps_wanted(struct ceph_inode_info *ci) 568de57606cSSage Weil { 569de57606cSSage Weil int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci); 570de57606cSSage Weil if (w & CEPH_CAP_FILE_BUFFER) 571de57606cSSage Weil w |= CEPH_CAP_FILE_EXCL; /* we want EXCL if dirty data */ 572de57606cSSage Weil return w; 573de57606cSSage Weil } 574de57606cSSage Weil 575de57606cSSage Weil /* what the mds thinks we want */ 576de57606cSSage Weil extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci); 577de57606cSSage Weil 57837151668SYehuda Sadeh extern void ceph_caps_init(struct ceph_mds_client *mdsc); 57937151668SYehuda Sadeh extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); 58037151668SYehuda Sadeh extern void ceph_adjust_min_caps(struct ceph_mds_client *mdsc, int delta); 58193faca6eSmajianpeng extern void ceph_reserve_caps(struct ceph_mds_client *mdsc, 58237151668SYehuda Sadeh struct ceph_cap_reservation *ctx, int need); 58337151668SYehuda Sadeh extern int ceph_unreserve_caps(struct ceph_mds_client *mdsc, 58437151668SYehuda Sadeh struct ceph_cap_reservation *ctx); 5853d14c5d2SYehuda Sadeh extern void ceph_reservation_status(struct ceph_fs_client *client, 586de57606cSSage Weil int *total, int *avail, int *used, 58785ccce43SSage Weil int *reserved, int *min); 588de57606cSSage Weil 589de57606cSSage Weil 590de57606cSSage Weil 591de57606cSSage Weil /* 592de57606cSSage Weil * we keep buffered readdir results attached to file->private_data 593de57606cSSage Weil */ 5944918b6d1SSage Weil #define CEPH_F_SYNC 1 5959cfa1098SSage Weil #define CEPH_F_ATEND 2 5964918b6d1SSage Weil 597de57606cSSage Weil struct ceph_file_info { 598252c6728SSage Weil short fmode; /* initialized on open */ 599252c6728SSage Weil short flags; /* CEPH_F_* */ 600de57606cSSage Weil 601de57606cSSage Weil /* readdir: position within the dir */ 602de57606cSSage Weil u32 frag; 603de57606cSSage Weil struct ceph_mds_request *last_readdir; 604de57606cSSage Weil 605de57606cSSage Weil /* readdir: position within a frag */ 606de57606cSSage Weil unsigned offset; /* offset of last chunk, adjusted for . and .. */ 607f0494206SYan, Zheng unsigned next_offset; /* offset of next chunk (last_name's + 1) */ 608de57606cSSage Weil char *last_name; /* last entry in previous chunk */ 609de57606cSSage Weil struct dentry *dentry; /* next dentry (for dcache readdir) */ 6102f276c51SYan, Zheng int dir_release_count; 61170db4f36SYan, Zheng int dir_ordered_count; 612de57606cSSage Weil 613de57606cSSage Weil /* used for -o dirstat read() on directory thing */ 614de57606cSSage Weil char *dir_info; 615de57606cSSage Weil int dir_info_len; 616de57606cSSage Weil }; 617de57606cSSage Weil 618de57606cSSage Weil 619de57606cSSage Weil 620de57606cSSage Weil /* 621de57606cSSage Weil * A "snap realm" describes a subset of the file hierarchy sharing 622de57606cSSage Weil * the same set of snapshots that apply to it. The realms themselves 623de57606cSSage Weil * are organized into a hierarchy, such that children inherit (some of) 624de57606cSSage Weil * the snapshots of their parents. 625de57606cSSage Weil * 626de57606cSSage Weil * All inodes within the realm that have capabilities are linked into a 627de57606cSSage Weil * per-realm list. 628de57606cSSage Weil */ 629de57606cSSage Weil struct ceph_snap_realm { 630de57606cSSage Weil u64 ino; 631de57606cSSage Weil atomic_t nref; 632a105f00cSSage Weil struct rb_node node; 633a105f00cSSage Weil 634de57606cSSage Weil u64 created, seq; 635de57606cSSage Weil u64 parent_ino; 636de57606cSSage Weil u64 parent_since; /* snapid when our current parent became so */ 637de57606cSSage Weil 638de57606cSSage Weil u64 *prior_parent_snaps; /* snaps inherited from any parents we */ 639aa711ee3SAlex Elder u32 num_prior_parent_snaps; /* had prior to parent_since */ 640de57606cSSage Weil u64 *snaps; /* snaps specific to this realm */ 641aa711ee3SAlex Elder u32 num_snaps; 642de57606cSSage Weil 643de57606cSSage Weil struct ceph_snap_realm *parent; 644de57606cSSage Weil struct list_head children; /* list of child realms */ 645de57606cSSage Weil struct list_head child_item; 646de57606cSSage Weil 647de57606cSSage Weil struct list_head empty_item; /* if i have ref==0 */ 648de57606cSSage Weil 649ae00d4f3SSage Weil struct list_head dirty_item; /* if realm needs new context */ 650ae00d4f3SSage Weil 651de57606cSSage Weil /* the current set of snaps for this realm */ 652de57606cSSage Weil struct ceph_snap_context *cached_context; 653de57606cSSage Weil 654de57606cSSage Weil struct list_head inodes_with_caps; 655de57606cSSage Weil spinlock_t inodes_with_caps_lock; 656de57606cSSage Weil }; 657de57606cSSage Weil 6583d14c5d2SYehuda Sadeh static inline int default_congestion_kb(void) 6593d14c5d2SYehuda Sadeh { 6603d14c5d2SYehuda Sadeh int congestion_kb; 661de57606cSSage Weil 662de57606cSSage Weil /* 6633d14c5d2SYehuda Sadeh * Copied from NFS 6643d14c5d2SYehuda Sadeh * 6653d14c5d2SYehuda Sadeh * congestion size, scale with available memory. 6663d14c5d2SYehuda Sadeh * 6673d14c5d2SYehuda Sadeh * 64MB: 8192k 6683d14c5d2SYehuda Sadeh * 128MB: 11585k 6693d14c5d2SYehuda Sadeh * 256MB: 16384k 6703d14c5d2SYehuda Sadeh * 512MB: 23170k 6713d14c5d2SYehuda Sadeh * 1GB: 32768k 6723d14c5d2SYehuda Sadeh * 2GB: 46340k 6733d14c5d2SYehuda Sadeh * 4GB: 65536k 6743d14c5d2SYehuda Sadeh * 8GB: 92681k 6753d14c5d2SYehuda Sadeh * 16GB: 131072k 6763d14c5d2SYehuda Sadeh * 6773d14c5d2SYehuda Sadeh * This allows larger machines to have larger/more transfers. 6783d14c5d2SYehuda Sadeh * Limit the default to 256M 679de57606cSSage Weil */ 6803d14c5d2SYehuda Sadeh congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10); 6813d14c5d2SYehuda Sadeh if (congestion_kb > 256*1024) 6823d14c5d2SYehuda Sadeh congestion_kb = 256*1024; 6833d14c5d2SYehuda Sadeh 6843d14c5d2SYehuda Sadeh return congestion_kb; 685de57606cSSage Weil } 686de57606cSSage Weil 687de57606cSSage Weil 688de57606cSSage Weil 689de57606cSSage Weil /* snap.c */ 690de57606cSSage Weil struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, 691de57606cSSage Weil u64 ino); 692de57606cSSage Weil extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, 693de57606cSSage Weil struct ceph_snap_realm *realm); 694de57606cSSage Weil extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, 695de57606cSSage Weil struct ceph_snap_realm *realm); 696de57606cSSage Weil extern int ceph_update_snap_trace(struct ceph_mds_client *m, 697982d6011SYan, Zheng void *p, void *e, bool deletion, 698982d6011SYan, Zheng struct ceph_snap_realm **realm_ret); 699de57606cSSage Weil extern void ceph_handle_snap(struct ceph_mds_client *mdsc, 7002600d2ddSSage Weil struct ceph_mds_session *session, 701de57606cSSage Weil struct ceph_msg *msg); 702fc837c8fSSage Weil extern void ceph_queue_cap_snap(struct ceph_inode_info *ci); 703de57606cSSage Weil extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, 704de57606cSSage Weil struct ceph_cap_snap *capsnap); 705de57606cSSage Weil extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); 70697c85a82SYan, Zheng extern int ceph_snap_init(void); 70797c85a82SYan, Zheng extern void ceph_snap_exit(void); 708de57606cSSage Weil 709de57606cSSage Weil /* 710de57606cSSage Weil * a cap_snap is "pending" if it is still awaiting an in-progress 711de57606cSSage Weil * sync write (that may/may not still update size, mtime, etc.). 712de57606cSSage Weil */ 713de57606cSSage Weil static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) 714de57606cSSage Weil { 715de57606cSSage Weil return !list_empty(&ci->i_cap_snaps) && 716de57606cSSage Weil list_entry(ci->i_cap_snaps.prev, struct ceph_cap_snap, 717de57606cSSage Weil ci_item)->writing; 718de57606cSSage Weil } 719de57606cSSage Weil 720de57606cSSage Weil /* inode.c */ 721de57606cSSage Weil extern const struct inode_operations ceph_file_iops; 722de57606cSSage Weil 723de57606cSSage Weil extern struct inode *ceph_alloc_inode(struct super_block *sb); 724de57606cSSage Weil extern void ceph_destroy_inode(struct inode *inode); 7259f12bd11SYan, Zheng extern int ceph_drop_inode(struct inode *inode); 726de57606cSSage Weil 727de57606cSSage Weil extern struct inode *ceph_get_inode(struct super_block *sb, 728de57606cSSage Weil struct ceph_vino vino); 729de57606cSSage Weil extern struct inode *ceph_get_snapdir(struct inode *parent); 730de57606cSSage Weil extern int ceph_fill_file_size(struct inode *inode, int issued, 731de57606cSSage Weil u32 truncate_seq, u64 truncate_size, u64 size); 732de57606cSSage Weil extern void ceph_fill_file_time(struct inode *inode, int issued, 733de57606cSSage Weil u64 time_warp_seq, struct timespec *ctime, 734de57606cSSage Weil struct timespec *mtime, struct timespec *atime); 735de57606cSSage Weil extern int ceph_fill_trace(struct super_block *sb, 736de57606cSSage Weil struct ceph_mds_request *req, 737de57606cSSage Weil struct ceph_mds_session *session); 738de57606cSSage Weil extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, 739de57606cSSage Weil struct ceph_mds_session *session); 740de57606cSSage Weil 741de57606cSSage Weil extern int ceph_inode_holds_cap(struct inode *inode, int mask); 742de57606cSSage Weil 743de57606cSSage Weil extern int ceph_inode_set_size(struct inode *inode, loff_t size); 744b415bf4fSYan, Zheng extern void __ceph_do_pending_vmtruncate(struct inode *inode); 7453c6f6b79SSage Weil extern void ceph_queue_vmtruncate(struct inode *inode); 7463c6f6b79SSage Weil 7473c6f6b79SSage Weil extern void ceph_queue_invalidate(struct inode *inode); 7483c6f6b79SSage Weil extern void ceph_queue_writeback(struct inode *inode); 749de57606cSSage Weil 75001deead0SYan, Zheng extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 75101deead0SYan, Zheng int mask, bool force); 75201deead0SYan, Zheng static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) 75301deead0SYan, Zheng { 75401deead0SYan, Zheng return __ceph_do_getattr(inode, NULL, mask, force); 75501deead0SYan, Zheng } 75610556cb2SAl Viro extern int ceph_permission(struct inode *inode, int mask); 757de57606cSSage Weil extern int ceph_setattr(struct dentry *dentry, struct iattr *attr); 758de57606cSSage Weil extern int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, 759de57606cSSage Weil struct kstat *stat); 760de57606cSSage Weil 761de57606cSSage Weil /* xattr.c */ 762de57606cSSage Weil extern int ceph_setxattr(struct dentry *, const char *, const void *, 763de57606cSSage Weil size_t, int); 7647221fe4cSGuangliang Zhao int __ceph_setxattr(struct dentry *, const char *, const void *, size_t, int); 7657221fe4cSGuangliang Zhao ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); 7667221fe4cSGuangliang Zhao int __ceph_removexattr(struct dentry *, const char *); 767de57606cSSage Weil extern ssize_t ceph_getxattr(struct dentry *, const char *, void *, size_t); 768de57606cSSage Weil extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); 769de57606cSSage Weil extern int ceph_removexattr(struct dentry *, const char *); 770de57606cSSage Weil extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci); 771de57606cSSage Weil extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); 7723ce6cd12SAlex Elder extern void __init ceph_xattr_init(void); 7733ce6cd12SAlex Elder extern void ceph_xattr_exit(void); 774b1ee94aaSYan, Zheng extern const struct xattr_handler *ceph_xattr_handlers[]; 775de57606cSSage Weil 7767221fe4cSGuangliang Zhao /* acl.c */ 777b1ee94aaSYan, Zheng struct ceph_acls_info { 778b1ee94aaSYan, Zheng void *default_acl; 779b1ee94aaSYan, Zheng void *acl; 780b1ee94aaSYan, Zheng struct ceph_pagelist *pagelist; 781b1ee94aaSYan, Zheng }; 7827221fe4cSGuangliang Zhao 7837221fe4cSGuangliang Zhao #ifdef CONFIG_CEPH_FS_POSIX_ACL 7847221fe4cSGuangliang Zhao 7857221fe4cSGuangliang Zhao struct posix_acl *ceph_get_acl(struct inode *, int); 78672466d0bSSage Weil int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type); 787b1ee94aaSYan, Zheng int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 788b1ee94aaSYan, Zheng struct ceph_acls_info *info); 789b1ee94aaSYan, Zheng void ceph_init_inode_acls(struct inode *inode, struct ceph_acls_info *info); 790b1ee94aaSYan, Zheng void ceph_release_acls_info(struct ceph_acls_info *info); 791c969d9bfSGuangliang Zhao 792c969d9bfSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 793c969d9bfSGuangliang Zhao { 794c969d9bfSGuangliang Zhao forget_all_cached_acls(inode); 795c969d9bfSGuangliang Zhao } 7967221fe4cSGuangliang Zhao 7977221fe4cSGuangliang Zhao #else 7987221fe4cSGuangliang Zhao 7997221fe4cSGuangliang Zhao #define ceph_get_acl NULL 80072466d0bSSage Weil #define ceph_set_acl NULL 8017221fe4cSGuangliang Zhao 802b1ee94aaSYan, Zheng static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 803b1ee94aaSYan, Zheng struct ceph_acls_info *info) 8047221fe4cSGuangliang Zhao { 8057221fe4cSGuangliang Zhao return 0; 8067221fe4cSGuangliang Zhao } 807b1ee94aaSYan, Zheng static inline void ceph_init_inode_acls(struct inode *inode, 808b1ee94aaSYan, Zheng struct ceph_acls_info *info) 809b1ee94aaSYan, Zheng { 810b1ee94aaSYan, Zheng } 811b1ee94aaSYan, Zheng static inline void ceph_release_acls_info(struct ceph_acls_info *info) 812b1ee94aaSYan, Zheng { 813b1ee94aaSYan, Zheng } 8147221fe4cSGuangliang Zhao static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) 8157221fe4cSGuangliang Zhao { 8167221fe4cSGuangliang Zhao return 0; 8177221fe4cSGuangliang Zhao } 8187221fe4cSGuangliang Zhao 8197221fe4cSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 8207221fe4cSGuangliang Zhao { 8217221fe4cSGuangliang Zhao } 8227221fe4cSGuangliang Zhao 8237221fe4cSGuangliang Zhao #endif 8247221fe4cSGuangliang Zhao 825de57606cSSage Weil /* caps.c */ 826de57606cSSage Weil extern const char *ceph_cap_string(int c); 827de57606cSSage Weil extern void ceph_handle_caps(struct ceph_mds_session *session, 828de57606cSSage Weil struct ceph_msg *msg); 829d9df2783SYan, Zheng extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, 830d9df2783SYan, Zheng struct ceph_cap_reservation *ctx); 831d9df2783SYan, Zheng extern void ceph_add_cap(struct inode *inode, 832de57606cSSage Weil struct ceph_mds_session *session, u64 cap_id, 833de57606cSSage Weil int fmode, unsigned issued, unsigned wanted, 834de57606cSSage Weil unsigned cap, unsigned seq, u64 realmino, int flags, 835d9df2783SYan, Zheng struct ceph_cap **new_cap); 836a096b09aSYan, Zheng extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); 83737151668SYehuda Sadeh extern void ceph_put_cap(struct ceph_mds_client *mdsc, 83837151668SYehuda Sadeh struct ceph_cap *cap); 8399215aeeaSYan, Zheng extern int ceph_is_any_caps(struct inode *inode); 840de57606cSSage Weil 841d40ee0dcSYan, Zheng extern void __queue_cap_release(struct ceph_mds_session *session, u64 ino, 842d40ee0dcSYan, Zheng u64 cap_id, u32 migrate_seq, u32 issue_seq); 843de57606cSSage Weil extern void ceph_queue_caps_release(struct inode *inode); 844f1a3d572SStephen Rothwell extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); 84502c24a82SJosef Bacik extern int ceph_fsync(struct file *file, loff_t start, loff_t end, 84602c24a82SJosef Bacik int datasync); 847de57606cSSage Weil extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, 848de57606cSSage Weil struct ceph_mds_session *session); 8492bc50259SGreg Farnum extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, 8502bc50259SGreg Farnum int mds); 851de57606cSSage Weil extern int ceph_get_cap_mds(struct inode *inode); 852de57606cSSage Weil extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); 853de57606cSSage Weil extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); 854de57606cSSage Weil extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, 855de57606cSSage Weil struct ceph_snap_context *snapc); 856de57606cSSage Weil extern void __ceph_flush_snaps(struct ceph_inode_info *ci, 857e835124cSSage Weil struct ceph_mds_session **psession, 858e835124cSSage Weil int again); 859de57606cSSage Weil extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, 860de57606cSSage Weil struct ceph_mds_session *session); 861afcdaea3SSage Weil extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc); 862afcdaea3SSage Weil extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); 863de57606cSSage Weil 864de57606cSSage Weil extern int ceph_encode_inode_release(void **p, struct inode *inode, 865de57606cSSage Weil int mds, int drop, int unless, int force); 866de57606cSSage Weil extern int ceph_encode_dentry_release(void **p, struct dentry *dn, 867de57606cSSage Weil int mds, int drop, int unless); 868de57606cSSage Weil 869de57606cSSage Weil extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, 87031c542a1SYan, Zheng loff_t endoff, int *got, struct page **pinned_page); 871de57606cSSage Weil 872de57606cSSage Weil /* for counting open files by mode */ 873de57606cSSage Weil static inline void __ceph_get_fmode(struct ceph_inode_info *ci, int mode) 874de57606cSSage Weil { 875de57606cSSage Weil ci->i_nr_by_mode[mode]++; 876de57606cSSage Weil } 877de57606cSSage Weil extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode); 878de57606cSSage Weil 879de57606cSSage Weil /* addr.c */ 880de57606cSSage Weil extern const struct address_space_operations ceph_aops; 881de57606cSSage Weil extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); 882de57606cSSage Weil 883de57606cSSage Weil /* file.c */ 884de57606cSSage Weil extern const struct file_operations ceph_file_fops; 885de57606cSSage Weil extern const struct address_space_operations ceph_aops; 8869e0eb85dSAlex Elder 887de57606cSSage Weil extern int ceph_open(struct inode *inode, struct file *file); 8885ef50c3bSSage Weil extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, 8895ef50c3bSSage Weil struct file *file, unsigned flags, umode_t mode, 8905ef50c3bSSage Weil int *opened); 891de57606cSSage Weil extern int ceph_release(struct inode *inode, struct file *filp); 89231c542a1SYan, Zheng extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, 89331c542a1SYan, Zheng char *data, size_t len); 89428127bddSYan, Zheng int ceph_uninline_data(struct file *filp, struct page *locked_page); 895de57606cSSage Weil /* dir.c */ 896de57606cSSage Weil extern const struct file_operations ceph_dir_fops; 89738c48b5fSYan, Zheng extern const struct file_operations ceph_snapdir_fops; 898de57606cSSage Weil extern const struct inode_operations ceph_dir_iops; 89938c48b5fSYan, Zheng extern const struct inode_operations ceph_snapdir_iops; 90052dfb8acSSage Weil extern const struct dentry_operations ceph_dentry_ops, ceph_snap_dentry_ops, 901de57606cSSage Weil ceph_snapdir_dentry_ops; 902de57606cSSage Weil 903de57606cSSage Weil extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); 904468640e3SSage Weil extern int ceph_handle_snapdir(struct ceph_mds_request *req, 905468640e3SSage Weil struct dentry *dentry, int err); 906de57606cSSage Weil extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, 907de57606cSSage Weil struct dentry *dentry, int err); 908de57606cSSage Weil 909de57606cSSage Weil extern void ceph_dentry_lru_add(struct dentry *dn); 910de57606cSSage Weil extern void ceph_dentry_lru_touch(struct dentry *dn); 911de57606cSSage Weil extern void ceph_dentry_lru_del(struct dentry *dn); 91281a6cf2dSSage Weil extern void ceph_invalidate_dentry_lease(struct dentry *dentry); 913e5f86dc3SSage Weil extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); 9145f21c96dSSage Weil extern struct inode *ceph_get_dentry_parent_inode(struct dentry *dentry); 915de57606cSSage Weil 916de57606cSSage Weil /* 917de57606cSSage Weil * our d_ops vary depending on whether the inode is live, 918de57606cSSage Weil * snapshotted (read-only), or a virtual ".snap" directory. 919de57606cSSage Weil */ 920de57606cSSage Weil int ceph_init_dentry(struct dentry *dentry); 921de57606cSSage Weil 922de57606cSSage Weil 923de57606cSSage Weil /* ioctl.c */ 924de57606cSSage Weil extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 925de57606cSSage Weil 926de57606cSSage Weil /* export.c */ 927de57606cSSage Weil extern const struct export_operations ceph_export_ops; 928de57606cSSage Weil 92940819f6fSGreg Farnum /* locks.c */ 930eb13e832SYan, Zheng extern __init void ceph_flock_init(void); 93140819f6fSGreg Farnum extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); 93240819f6fSGreg Farnum extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); 93340819f6fSGreg Farnum extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); 93439be95e9SJim Schutt extern int ceph_encode_locks_to_buffer(struct inode *inode, 93539be95e9SJim Schutt struct ceph_filelock *flocks, 93639be95e9SJim Schutt int num_fcntl_locks, 93739be95e9SJim Schutt int num_flock_locks); 93839be95e9SJim Schutt extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, 93939be95e9SJim Schutt struct ceph_pagelist *pagelist, 94039be95e9SJim Schutt int num_fcntl_locks, int num_flock_locks); 94140819f6fSGreg Farnum extern int lock_to_ceph_filelock(struct file_lock *fl, struct ceph_filelock *c); 94240819f6fSGreg Farnum 9433d14c5d2SYehuda Sadeh /* debugfs.c */ 9443d14c5d2SYehuda Sadeh extern int ceph_fs_debugfs_init(struct ceph_fs_client *client); 9453d14c5d2SYehuda Sadeh extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); 9463d14c5d2SYehuda Sadeh 947de57606cSSage Weil #endif /* _FS_CEPH_SUPER_H */ 948