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> 16de57606cSSage Weil 173d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 18de57606cSSage Weil 19de57606cSSage Weil /* f_type in struct statfs */ 20de57606cSSage Weil #define CEPH_SUPER_MAGIC 0x00c36400 21de57606cSSage Weil 22de57606cSSage Weil /* large granularity for statfs utilization stats to facilitate 23de57606cSSage Weil * large volume sizes on 32-bit machines. */ 24de57606cSSage Weil #define CEPH_BLOCK_SHIFT 20 /* 1 MB */ 25de57606cSSage Weil #define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) 26de57606cSSage Weil 273d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ 283d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ 293d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ 306a259382SSage Weil 313d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_DEFAULT (CEPH_MOUNT_OPT_RBYTES) 32de57606cSSage Weil 333d14c5d2SYehuda Sadeh #define ceph_set_mount_opt(fsc, opt) \ 343d14c5d2SYehuda Sadeh (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt; 353d14c5d2SYehuda Sadeh #define ceph_test_mount_opt(fsc, opt) \ 363d14c5d2SYehuda Sadeh (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) 37de57606cSSage Weil 383d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_DEFAULT 1024 393d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) 403d14c5d2SYehuda Sadeh #define CEPH_SNAPDIRNAME_DEFAULT ".snap" 41de57606cSSage Weil 423d14c5d2SYehuda Sadeh struct ceph_mount_options { 43de57606cSSage Weil int flags; 443d14c5d2SYehuda Sadeh int sb_flags; 453d14c5d2SYehuda Sadeh 466e19a16eSSage Weil int wsize; 476e19a16eSSage Weil int rsize; /* max readahead */ 486e19a16eSSage Weil int congestion_kb; /* max writeback in flight */ 496e19a16eSSage Weil int caps_wanted_delay_min, caps_wanted_delay_max; 506e19a16eSSage Weil int cap_release_safety; 5123804d91SSage Weil int max_readdir; /* max readdir result (entires) */ 5223804d91SSage Weil int max_readdir_bytes; /* max readdir result (bytes) */ 533d14c5d2SYehuda Sadeh 543d14c5d2SYehuda Sadeh /* 553d14c5d2SYehuda Sadeh * everything above this point can be memcmp'd; everything below 563d14c5d2SYehuda Sadeh * is handled in compare_mount_options() 573d14c5d2SYehuda Sadeh */ 583d14c5d2SYehuda Sadeh 59de57606cSSage Weil char *snapdir_name; /* default ".snap" */ 60de57606cSSage Weil }; 61de57606cSSage Weil 623d14c5d2SYehuda Sadeh struct ceph_fs_client { 63de57606cSSage Weil struct super_block *sb; 64de57606cSSage Weil 653d14c5d2SYehuda Sadeh struct ceph_mount_options *mount_options; 663d14c5d2SYehuda Sadeh struct ceph_client *client; 673d14c5d2SYehuda Sadeh 68de57606cSSage Weil unsigned long mount_state; 6985ccce43SSage Weil int min_caps; /* min caps i added */ 7085ccce43SSage Weil 713d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc; 72de57606cSSage Weil 73de57606cSSage Weil /* writeback */ 74de57606cSSage Weil mempool_t *wb_pagevec_pool; 75de57606cSSage Weil struct workqueue_struct *wb_wq; 76de57606cSSage Weil struct workqueue_struct *pg_inv_wq; 77de57606cSSage Weil struct workqueue_struct *trunc_wq; 782baba250SYehuda Sadeh atomic_long_t writeback_count; 79de57606cSSage Weil 80de57606cSSage Weil struct backing_dev_info backing_dev_info; 810743304dSSage Weil 820743304dSSage Weil #ifdef CONFIG_DEBUG_FS 833d14c5d2SYehuda Sadeh struct dentry *debugfs_dentry_lru, *debugfs_caps; 842baba250SYehuda Sadeh struct dentry *debugfs_congestion_kb; 8506edf046SSage Weil struct dentry *debugfs_bdi; 863d14c5d2SYehuda Sadeh struct dentry *debugfs_mdsc, *debugfs_mdsmap; 870743304dSSage Weil #endif 88de57606cSSage Weil }; 89de57606cSSage Weil 903d14c5d2SYehuda Sadeh 91de57606cSSage Weil /* 92de57606cSSage Weil * File i/o capability. This tracks shared state with the metadata 93de57606cSSage Weil * server that allows us to cache or writeback attributes or to read 94de57606cSSage Weil * and write data. For any given inode, we should have one or more 95de57606cSSage Weil * capabilities, one issued by each metadata server, and our 96de57606cSSage Weil * cumulative access is the OR of all issued capabilities. 97de57606cSSage Weil * 98de57606cSSage Weil * Each cap is referenced by the inode's i_caps rbtree and by per-mds 99de57606cSSage Weil * session capability lists. 100de57606cSSage Weil */ 101de57606cSSage Weil struct ceph_cap { 102de57606cSSage Weil struct ceph_inode_info *ci; 103de57606cSSage Weil struct rb_node ci_node; /* per-ci cap tree */ 104de57606cSSage Weil struct ceph_mds_session *session; 105de57606cSSage Weil struct list_head session_caps; /* per-session caplist */ 106de57606cSSage Weil int mds; 107de57606cSSage Weil u64 cap_id; /* unique cap id (mds provided) */ 108de57606cSSage Weil int issued; /* latest, from the mds */ 109de57606cSSage Weil int implemented; /* implemented superset of issued (for revocation) */ 110de57606cSSage Weil int mds_wanted; 111685f9a5dSSage Weil u32 seq, issue_seq, mseq; 112685f9a5dSSage Weil u32 cap_gen; /* active/stale cycle */ 113de57606cSSage Weil unsigned long last_used; 114de57606cSSage Weil struct list_head caps_item; 115de57606cSSage Weil }; 116de57606cSSage Weil 117de57606cSSage Weil #define CHECK_CAPS_NODELAY 1 /* do not delay any further */ 118de57606cSSage Weil #define CHECK_CAPS_AUTHONLY 2 /* only check auth cap */ 119de57606cSSage Weil #define CHECK_CAPS_FLUSH 4 /* flush any dirty caps */ 120de57606cSSage Weil 121de57606cSSage Weil /* 122de57606cSSage Weil * Snapped cap state that is pending flush to mds. When a snapshot occurs, 123de57606cSSage Weil * we first complete any in-process sync writes and writeback any dirty 124de57606cSSage Weil * data before flushing the snapped state (tracked here) back to the MDS. 125de57606cSSage Weil */ 126de57606cSSage Weil struct ceph_cap_snap { 127de57606cSSage Weil atomic_t nref; 128de57606cSSage Weil struct ceph_inode_info *ci; 129de57606cSSage Weil struct list_head ci_item, flushing_item; 130de57606cSSage Weil 131de57606cSSage Weil u64 follows, flush_tid; 132de57606cSSage Weil int issued, dirty; 133de57606cSSage Weil struct ceph_snap_context *context; 134de57606cSSage Weil 135de57606cSSage Weil mode_t mode; 136de57606cSSage Weil uid_t uid; 137de57606cSSage Weil gid_t gid; 138de57606cSSage Weil 1394a625be4SSage Weil struct ceph_buffer *xattr_blob; 140de57606cSSage Weil u64 xattr_version; 141de57606cSSage Weil 142de57606cSSage Weil u64 size; 143de57606cSSage Weil struct timespec mtime, atime, ctime; 144de57606cSSage Weil u64 time_warp_seq; 145de57606cSSage Weil int writing; /* a sync write is still in progress */ 146de57606cSSage Weil int dirty_pages; /* dirty pages awaiting writeback */ 147de57606cSSage Weil }; 148de57606cSSage Weil 149de57606cSSage Weil static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) 150de57606cSSage Weil { 1514a625be4SSage Weil if (atomic_dec_and_test(&capsnap->nref)) { 1524a625be4SSage Weil if (capsnap->xattr_blob) 1534a625be4SSage Weil ceph_buffer_put(capsnap->xattr_blob); 154de57606cSSage Weil kfree(capsnap); 155de57606cSSage Weil } 1564a625be4SSage Weil } 157de57606cSSage Weil 158de57606cSSage Weil /* 159de57606cSSage Weil * The frag tree describes how a directory is fragmented, potentially across 160de57606cSSage Weil * multiple metadata servers. It is also used to indicate points where 161de57606cSSage Weil * metadata authority is delegated, and whether/where metadata is replicated. 162de57606cSSage Weil * 163de57606cSSage Weil * A _leaf_ frag will be present in the i_fragtree IFF there is 164de57606cSSage Weil * delegation info. That is, if mds >= 0 || ndist > 0. 165de57606cSSage Weil */ 166de57606cSSage Weil #define CEPH_MAX_DIRFRAG_REP 4 167de57606cSSage Weil 168de57606cSSage Weil struct ceph_inode_frag { 169de57606cSSage Weil struct rb_node node; 170de57606cSSage Weil 171de57606cSSage Weil /* fragtree state */ 172de57606cSSage Weil u32 frag; 173de57606cSSage Weil int split_by; /* i.e. 2^(split_by) children */ 174de57606cSSage Weil 175de57606cSSage Weil /* delegation and replication info */ 176de57606cSSage Weil int mds; /* -1 if same authority as parent */ 177de57606cSSage Weil int ndist; /* >0 if replicated */ 178de57606cSSage Weil int dist[CEPH_MAX_DIRFRAG_REP]; 179de57606cSSage Weil }; 180de57606cSSage Weil 181de57606cSSage Weil /* 182de57606cSSage Weil * We cache inode xattrs as an encoded blob until they are first used, 183de57606cSSage Weil * at which point we parse them into an rbtree. 184de57606cSSage Weil */ 185de57606cSSage Weil struct ceph_inode_xattr { 186de57606cSSage Weil struct rb_node node; 187de57606cSSage Weil 188de57606cSSage Weil const char *name; 189de57606cSSage Weil int name_len; 190de57606cSSage Weil const char *val; 191de57606cSSage Weil int val_len; 192de57606cSSage Weil int dirty; 193de57606cSSage Weil 194de57606cSSage Weil int should_free_name; 195de57606cSSage Weil int should_free_val; 196de57606cSSage Weil }; 197de57606cSSage Weil 1983d14c5d2SYehuda Sadeh /* 1993d14c5d2SYehuda Sadeh * Ceph dentry state 2003d14c5d2SYehuda Sadeh */ 2013d14c5d2SYehuda Sadeh struct ceph_dentry_info { 2023d14c5d2SYehuda Sadeh struct ceph_mds_session *lease_session; 2033d14c5d2SYehuda Sadeh u32 lease_gen, lease_shared_gen; 2043d14c5d2SYehuda Sadeh u32 lease_seq; 2053d14c5d2SYehuda Sadeh unsigned long lease_renew_after, lease_renew_from; 2063d14c5d2SYehuda Sadeh struct list_head lru; 2073d14c5d2SYehuda Sadeh struct dentry *dentry; 2083d14c5d2SYehuda Sadeh u64 time; 2093d14c5d2SYehuda Sadeh u64 offset; 2103d14c5d2SYehuda Sadeh }; 2113d14c5d2SYehuda Sadeh 212de57606cSSage Weil struct ceph_inode_xattrs_info { 213de57606cSSage Weil /* 214de57606cSSage Weil * (still encoded) xattr blob. we avoid the overhead of parsing 215de57606cSSage Weil * this until someone actually calls getxattr, etc. 216de57606cSSage Weil * 217de57606cSSage Weil * blob->vec.iov_len == 4 implies there are no xattrs; blob == 218de57606cSSage Weil * NULL means we don't know. 219de57606cSSage Weil */ 220de57606cSSage Weil struct ceph_buffer *blob, *prealloc_blob; 221de57606cSSage Weil 222de57606cSSage Weil struct rb_root index; 223de57606cSSage Weil bool dirty; 224de57606cSSage Weil int count; 225de57606cSSage Weil int names_size; 226de57606cSSage Weil int vals_size; 227de57606cSSage Weil u64 version, index_version; 228de57606cSSage Weil }; 229de57606cSSage Weil 230de57606cSSage Weil /* 231de57606cSSage Weil * Ceph inode. 232de57606cSSage Weil */ 233de57606cSSage Weil struct ceph_inode_info { 234de57606cSSage Weil struct ceph_vino i_vino; /* ceph ino + snap */ 235de57606cSSage Weil 236de57606cSSage Weil u64 i_version; 237de57606cSSage Weil u32 i_time_warp_seq; 238de57606cSSage Weil 239de57606cSSage Weil unsigned i_ceph_flags; 240de57606cSSage Weil unsigned long i_release_count; 241de57606cSSage Weil 242de57606cSSage Weil struct ceph_file_layout i_layout; 243de57606cSSage Weil char *i_symlink; 244de57606cSSage Weil 245de57606cSSage Weil /* for dirs */ 246de57606cSSage Weil struct timespec i_rctime; 247de57606cSSage Weil u64 i_rbytes, i_rfiles, i_rsubdirs; 248de57606cSSage Weil u64 i_files, i_subdirs; 249de57606cSSage Weil u64 i_max_offset; /* largest readdir offset, set with I_COMPLETE */ 250de57606cSSage Weil 251de57606cSSage Weil struct rb_root i_fragtree; 252de57606cSSage Weil struct mutex i_fragtree_mutex; 253de57606cSSage Weil 254de57606cSSage Weil struct ceph_inode_xattrs_info i_xattrs; 255de57606cSSage Weil 256de57606cSSage Weil /* capabilities. protected _both_ by i_lock and cap->session's 257de57606cSSage Weil * s_mutex. */ 258de57606cSSage Weil struct rb_root i_caps; /* cap list */ 259de57606cSSage Weil struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ 260de57606cSSage Weil unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ 261de57606cSSage Weil struct list_head i_dirty_item, i_flushing_item; 262de57606cSSage Weil u64 i_cap_flush_seq; 263de57606cSSage Weil /* we need to track cap writeback on a per-cap-bit basis, to allow 264de57606cSSage Weil * overlapping, pipelined cap flushes to the mds. we can probably 265de57606cSSage Weil * reduce the tid to 8 bits if we're concerned about inode size. */ 266de57606cSSage Weil u16 i_cap_flush_last_tid, i_cap_flush_tid[CEPH_CAP_BITS]; 267de57606cSSage Weil wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ 268de57606cSSage Weil unsigned long i_hold_caps_min; /* jiffies */ 269de57606cSSage Weil unsigned long i_hold_caps_max; /* jiffies */ 270de57606cSSage Weil struct list_head i_cap_delay_list; /* for delayed cap release to mds */ 271de57606cSSage Weil int i_cap_exporting_mds; /* to handle cap migration between */ 272de57606cSSage Weil unsigned i_cap_exporting_mseq; /* mds's. */ 273de57606cSSage Weil unsigned i_cap_exporting_issued; 274de57606cSSage Weil struct ceph_cap_reservation i_cap_migration_resv; 275de57606cSSage Weil struct list_head i_cap_snaps; /* snapped state pending flush to mds */ 2767d8cb26dSSage Weil struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or 2777d8cb26dSSage Weil dirty|flushing caps */ 278de57606cSSage Weil unsigned i_snap_caps; /* cap bits for snapped files */ 279de57606cSSage Weil 280de57606cSSage Weil int i_nr_by_mode[CEPH_FILE_MODE_NUM]; /* open file counts */ 281de57606cSSage Weil 282de57606cSSage Weil u32 i_truncate_seq; /* last truncate to smaller size */ 283de57606cSSage Weil u64 i_truncate_size; /* and the size we last truncated down to */ 284de57606cSSage Weil int i_truncate_pending; /* still need to call vmtruncate */ 285de57606cSSage Weil 286de57606cSSage Weil u64 i_max_size; /* max file size authorized by mds */ 287de57606cSSage Weil u64 i_reported_size; /* (max_)size reported to or requested of mds */ 288de57606cSSage Weil u64 i_wanted_max_size; /* offset we'd like to write too */ 289de57606cSSage Weil u64 i_requested_max_size; /* max_size we've requested */ 290de57606cSSage Weil 291de57606cSSage Weil /* held references to caps */ 292de57606cSSage Weil int i_pin_ref; 293de57606cSSage Weil int i_rd_ref, i_rdcache_ref, i_wr_ref; 294de57606cSSage Weil int i_wrbuffer_ref, i_wrbuffer_ref_head; 295de57606cSSage Weil u32 i_shared_gen; /* increment each time we get FILE_SHARED */ 296*cd045cb4SSage Weil u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ 297de57606cSSage Weil u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ 298de57606cSSage Weil 299de57606cSSage Weil struct list_head i_unsafe_writes; /* uncommitted sync writes */ 300de57606cSSage Weil struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ 301de57606cSSage Weil spinlock_t i_unsafe_lock; 302de57606cSSage Weil 303de57606cSSage Weil struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ 304de57606cSSage Weil int i_snap_realm_counter; /* snap realm (if caps) */ 305de57606cSSage Weil struct list_head i_snap_realm_item; 306de57606cSSage Weil struct list_head i_snap_flush_item; 307de57606cSSage Weil 308de57606cSSage Weil struct work_struct i_wb_work; /* writeback work */ 309de57606cSSage Weil struct work_struct i_pg_inv_work; /* page invalidation work */ 310de57606cSSage Weil 311de57606cSSage Weil struct work_struct i_vmtruncate_work; 312de57606cSSage Weil 313de57606cSSage Weil struct inode vfs_inode; /* at end */ 314de57606cSSage Weil }; 315de57606cSSage Weil 316de57606cSSage Weil static inline struct ceph_inode_info *ceph_inode(struct inode *inode) 317de57606cSSage Weil { 318fbbccec9SNoah Watkins return container_of(inode, struct ceph_inode_info, vfs_inode); 319de57606cSSage Weil } 320de57606cSSage Weil 3213d14c5d2SYehuda Sadeh static inline struct ceph_vino ceph_vino(struct inode *inode) 3223d14c5d2SYehuda Sadeh { 3233d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino; 3243d14c5d2SYehuda Sadeh } 3253d14c5d2SYehuda Sadeh 3263d14c5d2SYehuda Sadeh /* 3273d14c5d2SYehuda Sadeh * ino_t is <64 bits on many architectures, blech. 3283d14c5d2SYehuda Sadeh * 3293d14c5d2SYehuda Sadeh * don't include snap in ino hash, at least for now. 3303d14c5d2SYehuda Sadeh */ 3313d14c5d2SYehuda Sadeh static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) 3323d14c5d2SYehuda Sadeh { 3333d14c5d2SYehuda Sadeh ino_t ino = (ino_t)vino.ino; /* ^ (vino.snap << 20); */ 3343d14c5d2SYehuda Sadeh #if BITS_PER_LONG == 32 3353d14c5d2SYehuda Sadeh ino ^= vino.ino >> (sizeof(u64)-sizeof(ino_t)) * 8; 3363d14c5d2SYehuda Sadeh if (!ino) 3373d14c5d2SYehuda Sadeh ino = 1; 3383d14c5d2SYehuda Sadeh #endif 3393d14c5d2SYehuda Sadeh return ino; 3403d14c5d2SYehuda Sadeh } 3413d14c5d2SYehuda Sadeh 3423d14c5d2SYehuda Sadeh /* for printf-style formatting */ 3433d14c5d2SYehuda Sadeh #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap 3443d14c5d2SYehuda Sadeh 3453d14c5d2SYehuda Sadeh static inline u64 ceph_ino(struct inode *inode) 3463d14c5d2SYehuda Sadeh { 3473d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.ino; 3483d14c5d2SYehuda Sadeh } 3493d14c5d2SYehuda Sadeh static inline u64 ceph_snap(struct inode *inode) 3503d14c5d2SYehuda Sadeh { 3513d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.snap; 3523d14c5d2SYehuda Sadeh } 3533d14c5d2SYehuda Sadeh 3543d14c5d2SYehuda Sadeh static inline int ceph_ino_compare(struct inode *inode, void *data) 3553d14c5d2SYehuda Sadeh { 3563d14c5d2SYehuda Sadeh struct ceph_vino *pvino = (struct ceph_vino *)data; 3573d14c5d2SYehuda Sadeh struct ceph_inode_info *ci = ceph_inode(inode); 3583d14c5d2SYehuda Sadeh return ci->i_vino.ino == pvino->ino && 3593d14c5d2SYehuda Sadeh ci->i_vino.snap == pvino->snap; 3603d14c5d2SYehuda Sadeh } 3613d14c5d2SYehuda Sadeh 3623d14c5d2SYehuda Sadeh static inline struct inode *ceph_find_inode(struct super_block *sb, 3633d14c5d2SYehuda Sadeh struct ceph_vino vino) 3643d14c5d2SYehuda Sadeh { 3653d14c5d2SYehuda Sadeh ino_t t = ceph_vino_to_ino(vino); 3663d14c5d2SYehuda Sadeh return ilookup5(sb, t, ceph_ino_compare, &vino); 3673d14c5d2SYehuda Sadeh } 3683d14c5d2SYehuda Sadeh 3693d14c5d2SYehuda Sadeh 3703d14c5d2SYehuda Sadeh /* 3713d14c5d2SYehuda Sadeh * Ceph inode. 3723d14c5d2SYehuda Sadeh */ 3733d14c5d2SYehuda Sadeh #define CEPH_I_COMPLETE 1 /* we have complete directory cached */ 3743d14c5d2SYehuda Sadeh #define CEPH_I_NODELAY 4 /* do not delay cap release */ 3753d14c5d2SYehuda Sadeh #define CEPH_I_FLUSH 8 /* do not delay flush of dirty metadata */ 3763d14c5d2SYehuda Sadeh #define CEPH_I_NOFLUSH 16 /* do not flush dirty caps */ 3773d14c5d2SYehuda Sadeh 378de57606cSSage Weil static inline void ceph_i_clear(struct inode *inode, unsigned mask) 379de57606cSSage Weil { 380de57606cSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 381de57606cSSage Weil 382de57606cSSage Weil spin_lock(&inode->i_lock); 383de57606cSSage Weil ci->i_ceph_flags &= ~mask; 384de57606cSSage Weil spin_unlock(&inode->i_lock); 385de57606cSSage Weil } 386de57606cSSage Weil 387de57606cSSage Weil static inline void ceph_i_set(struct inode *inode, unsigned mask) 388de57606cSSage Weil { 389de57606cSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 390de57606cSSage Weil 391de57606cSSage Weil spin_lock(&inode->i_lock); 392de57606cSSage Weil ci->i_ceph_flags |= mask; 393de57606cSSage Weil spin_unlock(&inode->i_lock); 394de57606cSSage Weil } 395de57606cSSage Weil 396de57606cSSage Weil static inline bool ceph_i_test(struct inode *inode, unsigned mask) 397de57606cSSage Weil { 398de57606cSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 399de57606cSSage Weil bool r; 400de57606cSSage Weil 401efa4c120SSage Weil spin_lock(&inode->i_lock); 402de57606cSSage Weil r = (ci->i_ceph_flags & mask) == mask; 403efa4c120SSage Weil spin_unlock(&inode->i_lock); 404de57606cSSage Weil return r; 405de57606cSSage Weil } 406de57606cSSage Weil 407de57606cSSage Weil 408de57606cSSage Weil /* find a specific frag @f */ 409de57606cSSage Weil extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, 410de57606cSSage Weil u32 f); 411de57606cSSage Weil 412de57606cSSage Weil /* 413de57606cSSage Weil * choose fragment for value @v. copy frag content to pfrag, if leaf 414de57606cSSage Weil * exists 415de57606cSSage Weil */ 416de57606cSSage Weil extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 417de57606cSSage Weil struct ceph_inode_frag *pfrag, 418de57606cSSage Weil int *found); 419de57606cSSage Weil 420de57606cSSage Weil static inline struct ceph_dentry_info *ceph_dentry(struct dentry *dentry) 421de57606cSSage Weil { 422de57606cSSage Weil return (struct ceph_dentry_info *)dentry->d_fsdata; 423de57606cSSage Weil } 424de57606cSSage Weil 425de57606cSSage Weil static inline loff_t ceph_make_fpos(unsigned frag, unsigned off) 426de57606cSSage Weil { 427de57606cSSage Weil return ((loff_t)frag << 32) | (loff_t)off; 428de57606cSSage Weil } 429de57606cSSage Weil 430de57606cSSage Weil static inline int ceph_set_ino_cb(struct inode *inode, void *data) 431de57606cSSage Weil { 432de57606cSSage Weil ceph_inode(inode)->i_vino = *(struct ceph_vino *)data; 433de57606cSSage Weil inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data); 434de57606cSSage Weil return 0; 435de57606cSSage Weil } 436de57606cSSage Weil 437de57606cSSage Weil /* 438de57606cSSage Weil * caps helpers 439de57606cSSage Weil */ 440de57606cSSage Weil static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) 441de57606cSSage Weil { 442de57606cSSage Weil return !RB_EMPTY_ROOT(&ci->i_caps); 443de57606cSSage Weil } 444de57606cSSage Weil 445de57606cSSage Weil extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); 446de57606cSSage Weil extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); 447de57606cSSage Weil extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, 448de57606cSSage Weil struct ceph_cap *cap); 449de57606cSSage Weil 450de57606cSSage Weil static inline int ceph_caps_issued(struct ceph_inode_info *ci) 451de57606cSSage Weil { 452de57606cSSage Weil int issued; 453de57606cSSage Weil spin_lock(&ci->vfs_inode.i_lock); 454de57606cSSage Weil issued = __ceph_caps_issued(ci, NULL); 455de57606cSSage Weil spin_unlock(&ci->vfs_inode.i_lock); 456de57606cSSage Weil return issued; 457de57606cSSage Weil } 458de57606cSSage Weil 459de57606cSSage Weil static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, 460de57606cSSage Weil int touch) 461de57606cSSage Weil { 462de57606cSSage Weil int r; 463de57606cSSage Weil spin_lock(&ci->vfs_inode.i_lock); 464de57606cSSage Weil r = __ceph_caps_issued_mask(ci, mask, touch); 465de57606cSSage Weil spin_unlock(&ci->vfs_inode.i_lock); 466de57606cSSage Weil return r; 467de57606cSSage Weil } 468de57606cSSage Weil 469de57606cSSage Weil static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) 470de57606cSSage Weil { 471de57606cSSage Weil return ci->i_dirty_caps | ci->i_flushing_caps; 472de57606cSSage Weil } 473afcdaea3SSage Weil extern void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask); 474de57606cSSage Weil 475de57606cSSage Weil extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); 476de57606cSSage Weil extern int __ceph_caps_used(struct ceph_inode_info *ci); 477de57606cSSage Weil 478de57606cSSage Weil extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); 479de57606cSSage Weil 480de57606cSSage Weil /* 481de57606cSSage Weil * wanted, by virtue of open file modes AND cap refs (buffered/cached data) 482de57606cSSage Weil */ 483de57606cSSage Weil static inline int __ceph_caps_wanted(struct ceph_inode_info *ci) 484de57606cSSage Weil { 485de57606cSSage Weil int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci); 486de57606cSSage Weil if (w & CEPH_CAP_FILE_BUFFER) 487de57606cSSage Weil w |= CEPH_CAP_FILE_EXCL; /* we want EXCL if dirty data */ 488de57606cSSage Weil return w; 489de57606cSSage Weil } 490de57606cSSage Weil 491de57606cSSage Weil /* what the mds thinks we want */ 492de57606cSSage Weil extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci); 493de57606cSSage Weil 49437151668SYehuda Sadeh extern void ceph_caps_init(struct ceph_mds_client *mdsc); 49537151668SYehuda Sadeh extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); 49637151668SYehuda Sadeh extern void ceph_adjust_min_caps(struct ceph_mds_client *mdsc, int delta); 49737151668SYehuda Sadeh extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, 49837151668SYehuda Sadeh struct ceph_cap_reservation *ctx, int need); 49937151668SYehuda Sadeh extern int ceph_unreserve_caps(struct ceph_mds_client *mdsc, 50037151668SYehuda Sadeh struct ceph_cap_reservation *ctx); 5013d14c5d2SYehuda Sadeh extern void ceph_reservation_status(struct ceph_fs_client *client, 502de57606cSSage Weil int *total, int *avail, int *used, 50385ccce43SSage Weil int *reserved, int *min); 504de57606cSSage Weil 5053d14c5d2SYehuda Sadeh static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode) 506de57606cSSage Weil { 5073d14c5d2SYehuda Sadeh return (struct ceph_fs_client *)inode->i_sb->s_fs_info; 508de57606cSSage Weil } 509de57606cSSage Weil 5103d14c5d2SYehuda Sadeh static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb) 511de57606cSSage Weil { 5123d14c5d2SYehuda Sadeh return (struct ceph_fs_client *)sb->s_fs_info; 513de57606cSSage Weil } 514de57606cSSage Weil 515de57606cSSage Weil 516de57606cSSage Weil /* 517de57606cSSage Weil * we keep buffered readdir results attached to file->private_data 518de57606cSSage Weil */ 519de57606cSSage Weil struct ceph_file_info { 520de57606cSSage Weil int fmode; /* initialized on open */ 521de57606cSSage Weil 522de57606cSSage Weil /* readdir: position within the dir */ 523de57606cSSage Weil u32 frag; 524de57606cSSage Weil struct ceph_mds_request *last_readdir; 525de57606cSSage Weil int at_end; 526de57606cSSage Weil 527de57606cSSage Weil /* readdir: position within a frag */ 528de57606cSSage Weil unsigned offset; /* offset of last chunk, adjusted for . and .. */ 529de57606cSSage Weil u64 next_offset; /* offset of next chunk (last_name's + 1) */ 530de57606cSSage Weil char *last_name; /* last entry in previous chunk */ 531de57606cSSage Weil struct dentry *dentry; /* next dentry (for dcache readdir) */ 532de57606cSSage Weil unsigned long dir_release_count; 533de57606cSSage Weil 534de57606cSSage Weil /* used for -o dirstat read() on directory thing */ 535de57606cSSage Weil char *dir_info; 536de57606cSSage Weil int dir_info_len; 537de57606cSSage Weil }; 538de57606cSSage Weil 539de57606cSSage Weil 540de57606cSSage Weil 541de57606cSSage Weil /* 542de57606cSSage Weil * A "snap realm" describes a subset of the file hierarchy sharing 543de57606cSSage Weil * the same set of snapshots that apply to it. The realms themselves 544de57606cSSage Weil * are organized into a hierarchy, such that children inherit (some of) 545de57606cSSage Weil * the snapshots of their parents. 546de57606cSSage Weil * 547de57606cSSage Weil * All inodes within the realm that have capabilities are linked into a 548de57606cSSage Weil * per-realm list. 549de57606cSSage Weil */ 550de57606cSSage Weil struct ceph_snap_realm { 551de57606cSSage Weil u64 ino; 552de57606cSSage Weil atomic_t nref; 553a105f00cSSage Weil struct rb_node node; 554a105f00cSSage Weil 555de57606cSSage Weil u64 created, seq; 556de57606cSSage Weil u64 parent_ino; 557de57606cSSage Weil u64 parent_since; /* snapid when our current parent became so */ 558de57606cSSage Weil 559de57606cSSage Weil u64 *prior_parent_snaps; /* snaps inherited from any parents we */ 560de57606cSSage Weil int num_prior_parent_snaps; /* had prior to parent_since */ 561de57606cSSage Weil u64 *snaps; /* snaps specific to this realm */ 562de57606cSSage Weil int num_snaps; 563de57606cSSage Weil 564de57606cSSage Weil struct ceph_snap_realm *parent; 565de57606cSSage Weil struct list_head children; /* list of child realms */ 566de57606cSSage Weil struct list_head child_item; 567de57606cSSage Weil 568de57606cSSage Weil struct list_head empty_item; /* if i have ref==0 */ 569de57606cSSage Weil 570ae00d4f3SSage Weil struct list_head dirty_item; /* if realm needs new context */ 571ae00d4f3SSage Weil 572de57606cSSage Weil /* the current set of snaps for this realm */ 573de57606cSSage Weil struct ceph_snap_context *cached_context; 574de57606cSSage Weil 575de57606cSSage Weil struct list_head inodes_with_caps; 576de57606cSSage Weil spinlock_t inodes_with_caps_lock; 577de57606cSSage Weil }; 578de57606cSSage Weil 5793d14c5d2SYehuda Sadeh static inline int default_congestion_kb(void) 5803d14c5d2SYehuda Sadeh { 5813d14c5d2SYehuda Sadeh int congestion_kb; 582de57606cSSage Weil 583de57606cSSage Weil /* 5843d14c5d2SYehuda Sadeh * Copied from NFS 5853d14c5d2SYehuda Sadeh * 5863d14c5d2SYehuda Sadeh * congestion size, scale with available memory. 5873d14c5d2SYehuda Sadeh * 5883d14c5d2SYehuda Sadeh * 64MB: 8192k 5893d14c5d2SYehuda Sadeh * 128MB: 11585k 5903d14c5d2SYehuda Sadeh * 256MB: 16384k 5913d14c5d2SYehuda Sadeh * 512MB: 23170k 5923d14c5d2SYehuda Sadeh * 1GB: 32768k 5933d14c5d2SYehuda Sadeh * 2GB: 46340k 5943d14c5d2SYehuda Sadeh * 4GB: 65536k 5953d14c5d2SYehuda Sadeh * 8GB: 92681k 5963d14c5d2SYehuda Sadeh * 16GB: 131072k 5973d14c5d2SYehuda Sadeh * 5983d14c5d2SYehuda Sadeh * This allows larger machines to have larger/more transfers. 5993d14c5d2SYehuda Sadeh * Limit the default to 256M 600de57606cSSage Weil */ 6013d14c5d2SYehuda Sadeh congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10); 6023d14c5d2SYehuda Sadeh if (congestion_kb > 256*1024) 6033d14c5d2SYehuda Sadeh congestion_kb = 256*1024; 6043d14c5d2SYehuda Sadeh 6053d14c5d2SYehuda Sadeh return congestion_kb; 606de57606cSSage Weil } 607de57606cSSage Weil 608de57606cSSage Weil 609de57606cSSage Weil 610de57606cSSage Weil /* snap.c */ 611de57606cSSage Weil struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, 612de57606cSSage Weil u64 ino); 613de57606cSSage Weil extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, 614de57606cSSage Weil struct ceph_snap_realm *realm); 615de57606cSSage Weil extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, 616de57606cSSage Weil struct ceph_snap_realm *realm); 617de57606cSSage Weil extern int ceph_update_snap_trace(struct ceph_mds_client *m, 618de57606cSSage Weil void *p, void *e, bool deletion); 619de57606cSSage Weil extern void ceph_handle_snap(struct ceph_mds_client *mdsc, 6202600d2ddSSage Weil struct ceph_mds_session *session, 621de57606cSSage Weil struct ceph_msg *msg); 622fc837c8fSSage Weil extern void ceph_queue_cap_snap(struct ceph_inode_info *ci); 623de57606cSSage Weil extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, 624de57606cSSage Weil struct ceph_cap_snap *capsnap); 625de57606cSSage Weil extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); 626de57606cSSage Weil 627de57606cSSage Weil /* 628de57606cSSage Weil * a cap_snap is "pending" if it is still awaiting an in-progress 629de57606cSSage Weil * sync write (that may/may not still update size, mtime, etc.). 630de57606cSSage Weil */ 631de57606cSSage Weil static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) 632de57606cSSage Weil { 633de57606cSSage Weil return !list_empty(&ci->i_cap_snaps) && 634de57606cSSage Weil list_entry(ci->i_cap_snaps.prev, struct ceph_cap_snap, 635de57606cSSage Weil ci_item)->writing; 636de57606cSSage Weil } 637de57606cSSage Weil 638de57606cSSage Weil /* inode.c */ 639de57606cSSage Weil extern const struct inode_operations ceph_file_iops; 640de57606cSSage Weil 641de57606cSSage Weil extern struct inode *ceph_alloc_inode(struct super_block *sb); 642de57606cSSage Weil extern void ceph_destroy_inode(struct inode *inode); 643de57606cSSage Weil 644de57606cSSage Weil extern struct inode *ceph_get_inode(struct super_block *sb, 645de57606cSSage Weil struct ceph_vino vino); 646de57606cSSage Weil extern struct inode *ceph_get_snapdir(struct inode *parent); 647de57606cSSage Weil extern int ceph_fill_file_size(struct inode *inode, int issued, 648de57606cSSage Weil u32 truncate_seq, u64 truncate_size, u64 size); 649de57606cSSage Weil extern void ceph_fill_file_time(struct inode *inode, int issued, 650de57606cSSage Weil u64 time_warp_seq, struct timespec *ctime, 651de57606cSSage Weil struct timespec *mtime, struct timespec *atime); 652de57606cSSage Weil extern int ceph_fill_trace(struct super_block *sb, 653de57606cSSage Weil struct ceph_mds_request *req, 654de57606cSSage Weil struct ceph_mds_session *session); 655de57606cSSage Weil extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, 656de57606cSSage Weil struct ceph_mds_session *session); 657de57606cSSage Weil 658de57606cSSage Weil extern int ceph_inode_holds_cap(struct inode *inode, int mask); 659de57606cSSage Weil 660de57606cSSage Weil extern int ceph_inode_set_size(struct inode *inode, loff_t size); 661de57606cSSage Weil extern void __ceph_do_pending_vmtruncate(struct inode *inode); 6623c6f6b79SSage Weil extern void ceph_queue_vmtruncate(struct inode *inode); 6633c6f6b79SSage Weil 6643c6f6b79SSage Weil extern void ceph_queue_invalidate(struct inode *inode); 6653c6f6b79SSage Weil extern void ceph_queue_writeback(struct inode *inode); 666de57606cSSage Weil 667de57606cSSage Weil extern int ceph_do_getattr(struct inode *inode, int mask); 668de57606cSSage Weil extern int ceph_permission(struct inode *inode, int mask); 669de57606cSSage Weil extern int ceph_setattr(struct dentry *dentry, struct iattr *attr); 670de57606cSSage Weil extern int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, 671de57606cSSage Weil struct kstat *stat); 672de57606cSSage Weil 673de57606cSSage Weil /* xattr.c */ 674de57606cSSage Weil extern int ceph_setxattr(struct dentry *, const char *, const void *, 675de57606cSSage Weil size_t, int); 676de57606cSSage Weil extern ssize_t ceph_getxattr(struct dentry *, const char *, void *, size_t); 677de57606cSSage Weil extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); 678de57606cSSage Weil extern int ceph_removexattr(struct dentry *, const char *); 679de57606cSSage Weil extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci); 680de57606cSSage Weil extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); 681de57606cSSage Weil 682de57606cSSage Weil /* caps.c */ 683de57606cSSage Weil extern const char *ceph_cap_string(int c); 684de57606cSSage Weil extern void ceph_handle_caps(struct ceph_mds_session *session, 685de57606cSSage Weil struct ceph_msg *msg); 686de57606cSSage Weil extern int ceph_add_cap(struct inode *inode, 687de57606cSSage Weil struct ceph_mds_session *session, u64 cap_id, 688de57606cSSage Weil int fmode, unsigned issued, unsigned wanted, 689de57606cSSage Weil unsigned cap, unsigned seq, u64 realmino, int flags, 690de57606cSSage Weil struct ceph_cap_reservation *caps_reservation); 6917c1332b8SSage Weil extern void __ceph_remove_cap(struct ceph_cap *cap); 692de57606cSSage Weil static inline void ceph_remove_cap(struct ceph_cap *cap) 693de57606cSSage Weil { 694de57606cSSage Weil struct inode *inode = &cap->ci->vfs_inode; 695de57606cSSage Weil spin_lock(&inode->i_lock); 6967c1332b8SSage Weil __ceph_remove_cap(cap); 697de57606cSSage Weil spin_unlock(&inode->i_lock); 698de57606cSSage Weil } 69937151668SYehuda Sadeh extern void ceph_put_cap(struct ceph_mds_client *mdsc, 70037151668SYehuda Sadeh struct ceph_cap *cap); 701de57606cSSage Weil 702de57606cSSage Weil extern void ceph_queue_caps_release(struct inode *inode); 703f1a3d572SStephen Rothwell extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); 7047ea80859SChristoph Hellwig extern int ceph_fsync(struct file *file, int datasync); 705de57606cSSage Weil extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, 706de57606cSSage Weil struct ceph_mds_session *session); 7072bc50259SGreg Farnum extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, 7082bc50259SGreg Farnum int mds); 709de57606cSSage Weil extern int ceph_get_cap_mds(struct inode *inode); 710de57606cSSage Weil extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); 711de57606cSSage Weil extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); 712de57606cSSage Weil extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, 713de57606cSSage Weil struct ceph_snap_context *snapc); 714de57606cSSage Weil extern void __ceph_flush_snaps(struct ceph_inode_info *ci, 715e835124cSSage Weil struct ceph_mds_session **psession, 716e835124cSSage Weil int again); 717de57606cSSage Weil extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, 718de57606cSSage Weil struct ceph_mds_session *session); 719afcdaea3SSage Weil extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc); 720afcdaea3SSage Weil extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); 721de57606cSSage Weil 722de57606cSSage Weil extern int ceph_encode_inode_release(void **p, struct inode *inode, 723de57606cSSage Weil int mds, int drop, int unless, int force); 724de57606cSSage Weil extern int ceph_encode_dentry_release(void **p, struct dentry *dn, 725de57606cSSage Weil int mds, int drop, int unless); 726de57606cSSage Weil 727de57606cSSage Weil extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, 728de57606cSSage Weil int *got, loff_t endoff); 729de57606cSSage Weil 730de57606cSSage Weil /* for counting open files by mode */ 731de57606cSSage Weil static inline void __ceph_get_fmode(struct ceph_inode_info *ci, int mode) 732de57606cSSage Weil { 733de57606cSSage Weil ci->i_nr_by_mode[mode]++; 734de57606cSSage Weil } 735de57606cSSage Weil extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode); 736de57606cSSage Weil 737de57606cSSage Weil /* addr.c */ 738de57606cSSage Weil extern const struct address_space_operations ceph_aops; 739de57606cSSage Weil extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); 740de57606cSSage Weil 741de57606cSSage Weil /* file.c */ 742de57606cSSage Weil extern const struct file_operations ceph_file_fops; 743de57606cSSage Weil extern const struct address_space_operations ceph_aops; 7443d14c5d2SYehuda Sadeh extern int ceph_copy_to_page_vector(struct page **pages, 7453d14c5d2SYehuda Sadeh const char *data, 7463d14c5d2SYehuda Sadeh loff_t off, size_t len); 7473d14c5d2SYehuda Sadeh extern int ceph_copy_from_page_vector(struct page **pages, 7483d14c5d2SYehuda Sadeh char *data, 7493d14c5d2SYehuda Sadeh loff_t off, size_t len); 7503d14c5d2SYehuda Sadeh extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags); 751de57606cSSage Weil extern int ceph_open(struct inode *inode, struct file *file); 752de57606cSSage Weil extern struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry, 753de57606cSSage Weil struct nameidata *nd, int mode, 754de57606cSSage Weil int locked_dir); 755de57606cSSage Weil extern int ceph_release(struct inode *inode, struct file *filp); 756de57606cSSage Weil 757de57606cSSage Weil /* dir.c */ 758de57606cSSage Weil extern const struct file_operations ceph_dir_fops; 759de57606cSSage Weil extern const struct inode_operations ceph_dir_iops; 76052dfb8acSSage Weil extern const struct dentry_operations ceph_dentry_ops, ceph_snap_dentry_ops, 761de57606cSSage Weil ceph_snapdir_dentry_ops; 762de57606cSSage Weil 763de57606cSSage Weil extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); 764de57606cSSage Weil extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, 765de57606cSSage Weil struct dentry *dentry, int err); 766de57606cSSage Weil 767de57606cSSage Weil extern void ceph_dentry_lru_add(struct dentry *dn); 768de57606cSSage Weil extern void ceph_dentry_lru_touch(struct dentry *dn); 769de57606cSSage Weil extern void ceph_dentry_lru_del(struct dentry *dn); 77081a6cf2dSSage Weil extern void ceph_invalidate_dentry_lease(struct dentry *dentry); 771de57606cSSage Weil 772de57606cSSage Weil /* 773de57606cSSage Weil * our d_ops vary depending on whether the inode is live, 774de57606cSSage Weil * snapshotted (read-only), or a virtual ".snap" directory. 775de57606cSSage Weil */ 776de57606cSSage Weil int ceph_init_dentry(struct dentry *dentry); 777de57606cSSage Weil 778de57606cSSage Weil 779de57606cSSage Weil /* ioctl.c */ 780de57606cSSage Weil extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 781de57606cSSage Weil 782de57606cSSage Weil /* export.c */ 783de57606cSSage Weil extern const struct export_operations ceph_export_ops; 784de57606cSSage Weil 78540819f6fSGreg Farnum /* locks.c */ 78640819f6fSGreg Farnum extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); 78740819f6fSGreg Farnum extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); 78840819f6fSGreg Farnum extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); 78940819f6fSGreg Farnum extern int ceph_encode_locks(struct inode *i, struct ceph_pagelist *p, 79040819f6fSGreg Farnum int p_locks, int f_locks); 79140819f6fSGreg Farnum extern int lock_to_ceph_filelock(struct file_lock *fl, struct ceph_filelock *c); 79240819f6fSGreg Farnum 793de57606cSSage Weil static inline struct inode *get_dentry_parent_inode(struct dentry *dentry) 794de57606cSSage Weil { 795de57606cSSage Weil if (dentry && dentry->d_parent) 796de57606cSSage Weil return dentry->d_parent->d_inode; 797de57606cSSage Weil 798de57606cSSage Weil return NULL; 799de57606cSSage Weil } 800de57606cSSage Weil 8013d14c5d2SYehuda Sadeh /* debugfs.c */ 8023d14c5d2SYehuda Sadeh extern int ceph_fs_debugfs_init(struct ceph_fs_client *client); 8033d14c5d2SYehuda Sadeh extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); 8043d14c5d2SYehuda Sadeh 805de57606cSSage Weil #endif /* _FS_CEPH_SUPER_H */ 806