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. */ 2492a49fb0SSage Weil #define CEPH_BLOCK_SHIFT 22 /* 4 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 */ 30ad1fee96SYehuda Sadeh #define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ 31a40dc6ccSSage Weil #define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ 326a259382SSage Weil 333d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_DEFAULT (CEPH_MOUNT_OPT_RBYTES) 34de57606cSSage Weil 353d14c5d2SYehuda Sadeh #define ceph_set_mount_opt(fsc, opt) \ 363d14c5d2SYehuda Sadeh (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt; 373d14c5d2SYehuda Sadeh #define ceph_test_mount_opt(fsc, opt) \ 383d14c5d2SYehuda Sadeh (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) 39de57606cSSage Weil 4083817e35SSage Weil #define CEPH_RSIZE_DEFAULT 0 /* max read size */ 4183817e35SSage Weil #define CEPH_RASIZE_DEFAULT (8192*1024) /* readahead */ 423d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_DEFAULT 1024 433d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) 443d14c5d2SYehuda Sadeh #define CEPH_SNAPDIRNAME_DEFAULT ".snap" 45de57606cSSage Weil 463d14c5d2SYehuda Sadeh struct ceph_mount_options { 47de57606cSSage Weil int flags; 483d14c5d2SYehuda Sadeh int sb_flags; 493d14c5d2SYehuda Sadeh 5083817e35SSage Weil int wsize; /* max write size */ 5183817e35SSage Weil int rsize; /* max read size */ 5283817e35SSage Weil int rasize; /* max readahead */ 536e19a16eSSage Weil int congestion_kb; /* max writeback in flight */ 546e19a16eSSage Weil int caps_wanted_delay_min, caps_wanted_delay_max; 556e19a16eSSage Weil int cap_release_safety; 5623804d91SSage Weil int max_readdir; /* max readdir result (entires) */ 5723804d91SSage Weil int max_readdir_bytes; /* max readdir result (bytes) */ 583d14c5d2SYehuda Sadeh 593d14c5d2SYehuda Sadeh /* 603d14c5d2SYehuda Sadeh * everything above this point can be memcmp'd; everything below 613d14c5d2SYehuda Sadeh * is handled in compare_mount_options() 623d14c5d2SYehuda Sadeh */ 633d14c5d2SYehuda Sadeh 64de57606cSSage Weil char *snapdir_name; /* default ".snap" */ 65de57606cSSage Weil }; 66de57606cSSage Weil 673d14c5d2SYehuda Sadeh struct ceph_fs_client { 68de57606cSSage Weil struct super_block *sb; 69de57606cSSage Weil 703d14c5d2SYehuda Sadeh struct ceph_mount_options *mount_options; 713d14c5d2SYehuda Sadeh struct ceph_client *client; 723d14c5d2SYehuda Sadeh 73de57606cSSage Weil unsigned long mount_state; 7485ccce43SSage Weil int min_caps; /* min caps i added */ 7585ccce43SSage Weil 763d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc; 77de57606cSSage Weil 78de57606cSSage Weil /* writeback */ 79de57606cSSage Weil mempool_t *wb_pagevec_pool; 80de57606cSSage Weil struct workqueue_struct *wb_wq; 81de57606cSSage Weil struct workqueue_struct *pg_inv_wq; 82de57606cSSage Weil struct workqueue_struct *trunc_wq; 832baba250SYehuda Sadeh atomic_long_t writeback_count; 84de57606cSSage Weil 85de57606cSSage Weil struct backing_dev_info backing_dev_info; 860743304dSSage Weil 870743304dSSage Weil #ifdef CONFIG_DEBUG_FS 883d14c5d2SYehuda Sadeh struct dentry *debugfs_dentry_lru, *debugfs_caps; 892baba250SYehuda Sadeh struct dentry *debugfs_congestion_kb; 9006edf046SSage Weil struct dentry *debugfs_bdi; 913d14c5d2SYehuda Sadeh struct dentry *debugfs_mdsc, *debugfs_mdsmap; 920743304dSSage Weil #endif 93de57606cSSage Weil }; 94de57606cSSage Weil 953d14c5d2SYehuda Sadeh 96de57606cSSage Weil /* 97de57606cSSage Weil * File i/o capability. This tracks shared state with the metadata 98de57606cSSage Weil * server that allows us to cache or writeback attributes or to read 99de57606cSSage Weil * and write data. For any given inode, we should have one or more 100de57606cSSage Weil * capabilities, one issued by each metadata server, and our 101de57606cSSage Weil * cumulative access is the OR of all issued capabilities. 102de57606cSSage Weil * 103de57606cSSage Weil * Each cap is referenced by the inode's i_caps rbtree and by per-mds 104de57606cSSage Weil * session capability lists. 105de57606cSSage Weil */ 106de57606cSSage Weil struct ceph_cap { 107de57606cSSage Weil struct ceph_inode_info *ci; 108de57606cSSage Weil struct rb_node ci_node; /* per-ci cap tree */ 109de57606cSSage Weil struct ceph_mds_session *session; 110de57606cSSage Weil struct list_head session_caps; /* per-session caplist */ 111de57606cSSage Weil int mds; 112de57606cSSage Weil u64 cap_id; /* unique cap id (mds provided) */ 113de57606cSSage Weil int issued; /* latest, from the mds */ 114de57606cSSage Weil int implemented; /* implemented superset of issued (for revocation) */ 115de57606cSSage Weil int mds_wanted; 116685f9a5dSSage Weil u32 seq, issue_seq, mseq; 117685f9a5dSSage Weil u32 cap_gen; /* active/stale cycle */ 118de57606cSSage Weil unsigned long last_used; 119de57606cSSage Weil struct list_head caps_item; 120de57606cSSage Weil }; 121de57606cSSage Weil 122de57606cSSage Weil #define CHECK_CAPS_NODELAY 1 /* do not delay any further */ 123de57606cSSage Weil #define CHECK_CAPS_AUTHONLY 2 /* only check auth cap */ 124de57606cSSage Weil #define CHECK_CAPS_FLUSH 4 /* flush any dirty caps */ 125de57606cSSage Weil 126de57606cSSage Weil /* 127de57606cSSage Weil * Snapped cap state that is pending flush to mds. When a snapshot occurs, 128de57606cSSage Weil * we first complete any in-process sync writes and writeback any dirty 129de57606cSSage Weil * data before flushing the snapped state (tracked here) back to the MDS. 130de57606cSSage Weil */ 131de57606cSSage Weil struct ceph_cap_snap { 132de57606cSSage Weil atomic_t nref; 133de57606cSSage Weil struct ceph_inode_info *ci; 134de57606cSSage Weil struct list_head ci_item, flushing_item; 135de57606cSSage Weil 136de57606cSSage Weil u64 follows, flush_tid; 137de57606cSSage Weil int issued, dirty; 138de57606cSSage Weil struct ceph_snap_context *context; 139de57606cSSage Weil 1405706b27dSAl Viro umode_t mode; 14105cb11c1SEric W. Biederman kuid_t uid; 14205cb11c1SEric W. Biederman kgid_t gid; 143de57606cSSage Weil 1444a625be4SSage Weil struct ceph_buffer *xattr_blob; 145de57606cSSage Weil u64 xattr_version; 146de57606cSSage Weil 147de57606cSSage Weil u64 size; 148de57606cSSage Weil struct timespec mtime, atime, ctime; 149de57606cSSage Weil u64 time_warp_seq; 150de57606cSSage Weil int writing; /* a sync write is still in progress */ 151de57606cSSage Weil int dirty_pages; /* dirty pages awaiting writeback */ 152de57606cSSage Weil }; 153de57606cSSage Weil 154de57606cSSage Weil static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) 155de57606cSSage Weil { 1564a625be4SSage Weil if (atomic_dec_and_test(&capsnap->nref)) { 1574a625be4SSage Weil if (capsnap->xattr_blob) 1584a625be4SSage Weil ceph_buffer_put(capsnap->xattr_blob); 159de57606cSSage Weil kfree(capsnap); 160de57606cSSage Weil } 1614a625be4SSage Weil } 162de57606cSSage Weil 163de57606cSSage Weil /* 164de57606cSSage Weil * The frag tree describes how a directory is fragmented, potentially across 165de57606cSSage Weil * multiple metadata servers. It is also used to indicate points where 166de57606cSSage Weil * metadata authority is delegated, and whether/where metadata is replicated. 167de57606cSSage Weil * 168de57606cSSage Weil * A _leaf_ frag will be present in the i_fragtree IFF there is 169de57606cSSage Weil * delegation info. That is, if mds >= 0 || ndist > 0. 170de57606cSSage Weil */ 171de57606cSSage Weil #define CEPH_MAX_DIRFRAG_REP 4 172de57606cSSage Weil 173de57606cSSage Weil struct ceph_inode_frag { 174de57606cSSage Weil struct rb_node node; 175de57606cSSage Weil 176de57606cSSage Weil /* fragtree state */ 177de57606cSSage Weil u32 frag; 178de57606cSSage Weil int split_by; /* i.e. 2^(split_by) children */ 179de57606cSSage Weil 180de57606cSSage Weil /* delegation and replication info */ 181de57606cSSage Weil int mds; /* -1 if same authority as parent */ 182de57606cSSage Weil int ndist; /* >0 if replicated */ 183de57606cSSage Weil int dist[CEPH_MAX_DIRFRAG_REP]; 184de57606cSSage Weil }; 185de57606cSSage Weil 186de57606cSSage Weil /* 187de57606cSSage Weil * We cache inode xattrs as an encoded blob until they are first used, 188de57606cSSage Weil * at which point we parse them into an rbtree. 189de57606cSSage Weil */ 190de57606cSSage Weil struct ceph_inode_xattr { 191de57606cSSage Weil struct rb_node node; 192de57606cSSage Weil 193de57606cSSage Weil const char *name; 194de57606cSSage Weil int name_len; 195de57606cSSage Weil const char *val; 196de57606cSSage Weil int val_len; 197de57606cSSage Weil int dirty; 198de57606cSSage Weil 199de57606cSSage Weil int should_free_name; 200de57606cSSage Weil int should_free_val; 201de57606cSSage Weil }; 202de57606cSSage Weil 2033d14c5d2SYehuda Sadeh /* 2043d14c5d2SYehuda Sadeh * Ceph dentry state 2053d14c5d2SYehuda Sadeh */ 2063d14c5d2SYehuda Sadeh struct ceph_dentry_info { 2073d14c5d2SYehuda Sadeh struct ceph_mds_session *lease_session; 2083d14c5d2SYehuda Sadeh u32 lease_gen, lease_shared_gen; 2093d14c5d2SYehuda Sadeh u32 lease_seq; 2103d14c5d2SYehuda Sadeh unsigned long lease_renew_after, lease_renew_from; 2113d14c5d2SYehuda Sadeh struct list_head lru; 2123d14c5d2SYehuda Sadeh struct dentry *dentry; 2133d14c5d2SYehuda Sadeh u64 time; 2143d14c5d2SYehuda Sadeh u64 offset; 2153d14c5d2SYehuda Sadeh }; 2163d14c5d2SYehuda Sadeh 217de57606cSSage Weil struct ceph_inode_xattrs_info { 218de57606cSSage Weil /* 219de57606cSSage Weil * (still encoded) xattr blob. we avoid the overhead of parsing 220de57606cSSage Weil * this until someone actually calls getxattr, etc. 221de57606cSSage Weil * 222de57606cSSage Weil * blob->vec.iov_len == 4 implies there are no xattrs; blob == 223de57606cSSage Weil * NULL means we don't know. 224de57606cSSage Weil */ 225de57606cSSage Weil struct ceph_buffer *blob, *prealloc_blob; 226de57606cSSage Weil 227de57606cSSage Weil struct rb_root index; 228de57606cSSage Weil bool dirty; 229de57606cSSage Weil int count; 230de57606cSSage Weil int names_size; 231de57606cSSage Weil int vals_size; 232de57606cSSage Weil u64 version, index_version; 233de57606cSSage Weil }; 234de57606cSSage Weil 235de57606cSSage Weil /* 236de57606cSSage Weil * Ceph inode. 237de57606cSSage Weil */ 238de57606cSSage Weil struct ceph_inode_info { 239de57606cSSage Weil struct ceph_vino i_vino; /* ceph ino + snap */ 240de57606cSSage Weil 241be655596SSage Weil spinlock_t i_ceph_lock; 242be655596SSage Weil 243de57606cSSage Weil u64 i_version; 244de57606cSSage Weil u32 i_time_warp_seq; 245de57606cSSage Weil 246de57606cSSage Weil unsigned i_ceph_flags; 2472f276c51SYan, Zheng atomic_t i_release_count; 2482f276c51SYan, Zheng atomic_t i_complete_count; 249de57606cSSage Weil 2506c0f3af7SSage Weil struct ceph_dir_layout i_dir_layout; 251de57606cSSage Weil struct ceph_file_layout i_layout; 252de57606cSSage Weil char *i_symlink; 253de57606cSSage Weil 254de57606cSSage Weil /* for dirs */ 255de57606cSSage Weil struct timespec i_rctime; 256de57606cSSage Weil u64 i_rbytes, i_rfiles, i_rsubdirs; 257de57606cSSage Weil u64 i_files, i_subdirs; 2582f276c51SYan, Zheng u64 i_max_offset; /* largest readdir offset, set with complete dir */ 259de57606cSSage Weil 260de57606cSSage Weil struct rb_root i_fragtree; 261de57606cSSage Weil struct mutex i_fragtree_mutex; 262de57606cSSage Weil 263de57606cSSage Weil struct ceph_inode_xattrs_info i_xattrs; 264de57606cSSage Weil 265be655596SSage Weil /* capabilities. protected _both_ by i_ceph_lock and cap->session's 266de57606cSSage Weil * s_mutex. */ 267de57606cSSage Weil struct rb_root i_caps; /* cap list */ 268de57606cSSage Weil struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ 269de57606cSSage Weil unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ 270de57606cSSage Weil struct list_head i_dirty_item, i_flushing_item; 271de57606cSSage Weil u64 i_cap_flush_seq; 272de57606cSSage Weil /* we need to track cap writeback on a per-cap-bit basis, to allow 273de57606cSSage Weil * overlapping, pipelined cap flushes to the mds. we can probably 274de57606cSSage Weil * reduce the tid to 8 bits if we're concerned about inode size. */ 275de57606cSSage Weil u16 i_cap_flush_last_tid, i_cap_flush_tid[CEPH_CAP_BITS]; 276de57606cSSage Weil wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ 277de57606cSSage Weil unsigned long i_hold_caps_min; /* jiffies */ 278de57606cSSage Weil unsigned long i_hold_caps_max; /* jiffies */ 279de57606cSSage Weil struct list_head i_cap_delay_list; /* for delayed cap release to mds */ 280de57606cSSage Weil int i_cap_exporting_mds; /* to handle cap migration between */ 281de57606cSSage Weil unsigned i_cap_exporting_mseq; /* mds's. */ 282de57606cSSage Weil unsigned i_cap_exporting_issued; 283de57606cSSage Weil struct ceph_cap_reservation i_cap_migration_resv; 284de57606cSSage Weil struct list_head i_cap_snaps; /* snapped state pending flush to mds */ 2857d8cb26dSSage Weil struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or 2867d8cb26dSSage Weil dirty|flushing caps */ 287de57606cSSage Weil unsigned i_snap_caps; /* cap bits for snapped files */ 288de57606cSSage Weil 289de57606cSSage Weil int i_nr_by_mode[CEPH_FILE_MODE_NUM]; /* open file counts */ 290de57606cSSage Weil 291de57606cSSage Weil u32 i_truncate_seq; /* last truncate to smaller size */ 292de57606cSSage Weil u64 i_truncate_size; /* and the size we last truncated down to */ 293de57606cSSage Weil int i_truncate_pending; /* still need to call vmtruncate */ 294de57606cSSage Weil 295de57606cSSage Weil u64 i_max_size; /* max file size authorized by mds */ 296de57606cSSage Weil u64 i_reported_size; /* (max_)size reported to or requested of mds */ 297de57606cSSage Weil u64 i_wanted_max_size; /* offset we'd like to write too */ 298de57606cSSage Weil u64 i_requested_max_size; /* max_size we've requested */ 299de57606cSSage Weil 300de57606cSSage Weil /* held references to caps */ 301de57606cSSage Weil int i_pin_ref; 302d3d0720dSHenry C Chang int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref; 303de57606cSSage Weil int i_wrbuffer_ref, i_wrbuffer_ref_head; 304de57606cSSage Weil u32 i_shared_gen; /* increment each time we get FILE_SHARED */ 305cd045cb4SSage Weil u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ 306de57606cSSage Weil u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ 307de57606cSSage Weil 308de57606cSSage Weil struct list_head i_unsafe_writes; /* uncommitted sync writes */ 309de57606cSSage Weil struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ 310de57606cSSage Weil spinlock_t i_unsafe_lock; 311de57606cSSage Weil 312de57606cSSage Weil struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ 313de57606cSSage Weil int i_snap_realm_counter; /* snap realm (if caps) */ 314de57606cSSage Weil struct list_head i_snap_realm_item; 315de57606cSSage Weil struct list_head i_snap_flush_item; 316de57606cSSage Weil 317de57606cSSage Weil struct work_struct i_wb_work; /* writeback work */ 318de57606cSSage Weil struct work_struct i_pg_inv_work; /* page invalidation work */ 319de57606cSSage Weil 320de57606cSSage Weil struct work_struct i_vmtruncate_work; 321de57606cSSage Weil 322de57606cSSage Weil struct inode vfs_inode; /* at end */ 323de57606cSSage Weil }; 324de57606cSSage Weil 325de57606cSSage Weil static inline struct ceph_inode_info *ceph_inode(struct inode *inode) 326de57606cSSage Weil { 327fbbccec9SNoah Watkins return container_of(inode, struct ceph_inode_info, vfs_inode); 328de57606cSSage Weil } 329de57606cSSage Weil 330ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode) 331ad1fee96SYehuda Sadeh { 332ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)inode->i_sb->s_fs_info; 333ad1fee96SYehuda Sadeh } 334ad1fee96SYehuda Sadeh 335ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb) 336ad1fee96SYehuda Sadeh { 337ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)sb->s_fs_info; 338ad1fee96SYehuda Sadeh } 339ad1fee96SYehuda Sadeh 3403d14c5d2SYehuda Sadeh static inline struct ceph_vino ceph_vino(struct inode *inode) 3413d14c5d2SYehuda Sadeh { 3423d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino; 3433d14c5d2SYehuda Sadeh } 3443d14c5d2SYehuda Sadeh 3453d14c5d2SYehuda Sadeh /* 3463d14c5d2SYehuda Sadeh * ino_t is <64 bits on many architectures, blech. 3473d14c5d2SYehuda Sadeh * 348ad1fee96SYehuda Sadeh * i_ino (kernel inode) st_ino (userspace) 349ad1fee96SYehuda Sadeh * i386 32 32 350ad1fee96SYehuda Sadeh * x86_64+ino32 64 32 351ad1fee96SYehuda Sadeh * x86_64 64 64 352ad1fee96SYehuda Sadeh */ 3533310f754SAmon Ott static inline u32 ceph_ino_to_ino32(__u64 vino) 354ad1fee96SYehuda Sadeh { 3553310f754SAmon Ott u32 ino = vino & 0xffffffff; 3563310f754SAmon Ott ino ^= vino >> 32; 357ad1fee96SYehuda Sadeh if (!ino) 358a661fc56SAmon Ott ino = 2; 359ad1fee96SYehuda Sadeh return ino; 360ad1fee96SYehuda Sadeh } 361ad1fee96SYehuda Sadeh 362ad1fee96SYehuda Sadeh /* 363ad1fee96SYehuda Sadeh * kernel i_ino value 3643d14c5d2SYehuda Sadeh */ 3653d14c5d2SYehuda Sadeh static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) 3663d14c5d2SYehuda Sadeh { 3673d14c5d2SYehuda Sadeh #if BITS_PER_LONG == 32 3683310f754SAmon Ott return ceph_ino_to_ino32(vino.ino); 3693310f754SAmon Ott #else 3703310f754SAmon Ott return (ino_t)vino.ino; 3713d14c5d2SYehuda Sadeh #endif 3723d14c5d2SYehuda Sadeh } 3733d14c5d2SYehuda Sadeh 374ad1fee96SYehuda Sadeh /* 375ad1fee96SYehuda Sadeh * user-visible ino (stat, filldir) 376ad1fee96SYehuda Sadeh */ 377ad1fee96SYehuda Sadeh #if BITS_PER_LONG == 32 378ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 379ad1fee96SYehuda Sadeh { 380ad1fee96SYehuda Sadeh return ino; 381ad1fee96SYehuda Sadeh } 382ad1fee96SYehuda Sadeh #else 383ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 384ad1fee96SYehuda Sadeh { 385ad1fee96SYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32)) 386ad1fee96SYehuda Sadeh ino = ceph_ino_to_ino32(ino); 387ad1fee96SYehuda Sadeh return ino; 388ad1fee96SYehuda Sadeh } 389ad1fee96SYehuda Sadeh #endif 390ad1fee96SYehuda Sadeh 391ad1fee96SYehuda Sadeh 3923d14c5d2SYehuda Sadeh /* for printf-style formatting */ 3933d14c5d2SYehuda Sadeh #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap 3943d14c5d2SYehuda Sadeh 3953d14c5d2SYehuda Sadeh static inline u64 ceph_ino(struct inode *inode) 3963d14c5d2SYehuda Sadeh { 3973d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.ino; 3983d14c5d2SYehuda Sadeh } 3993d14c5d2SYehuda Sadeh static inline u64 ceph_snap(struct inode *inode) 4003d14c5d2SYehuda Sadeh { 4013d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.snap; 4023d14c5d2SYehuda Sadeh } 4033d14c5d2SYehuda Sadeh 4043d14c5d2SYehuda Sadeh static inline int ceph_ino_compare(struct inode *inode, void *data) 4053d14c5d2SYehuda Sadeh { 4063d14c5d2SYehuda Sadeh struct ceph_vino *pvino = (struct ceph_vino *)data; 4073d14c5d2SYehuda Sadeh struct ceph_inode_info *ci = ceph_inode(inode); 4083d14c5d2SYehuda Sadeh return ci->i_vino.ino == pvino->ino && 4093d14c5d2SYehuda Sadeh ci->i_vino.snap == pvino->snap; 4103d14c5d2SYehuda Sadeh } 4113d14c5d2SYehuda Sadeh 4123d14c5d2SYehuda Sadeh static inline struct inode *ceph_find_inode(struct super_block *sb, 4133d14c5d2SYehuda Sadeh struct ceph_vino vino) 4143d14c5d2SYehuda Sadeh { 4153d14c5d2SYehuda Sadeh ino_t t = ceph_vino_to_ino(vino); 4163d14c5d2SYehuda Sadeh return ilookup5(sb, t, ceph_ino_compare, &vino); 4173d14c5d2SYehuda Sadeh } 4183d14c5d2SYehuda Sadeh 4193d14c5d2SYehuda Sadeh 4203d14c5d2SYehuda Sadeh /* 4213d14c5d2SYehuda Sadeh * Ceph inode. 4223d14c5d2SYehuda Sadeh */ 4233d14c5d2SYehuda Sadeh #define CEPH_I_NODELAY 4 /* do not delay cap release */ 4243d14c5d2SYehuda Sadeh #define CEPH_I_FLUSH 8 /* do not delay flush of dirty metadata */ 4253d14c5d2SYehuda Sadeh #define CEPH_I_NOFLUSH 16 /* do not flush dirty caps */ 4263d14c5d2SYehuda Sadeh 4272f276c51SYan, Zheng static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, 4282f276c51SYan, Zheng int release_count) 429de57606cSSage Weil { 4302f276c51SYan, Zheng atomic_set(&ci->i_complete_count, release_count); 431de57606cSSage Weil } 432de57606cSSage Weil 4332f276c51SYan, Zheng static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) 434de57606cSSage Weil { 4352f276c51SYan, Zheng atomic_inc(&ci->i_release_count); 436de57606cSSage Weil } 437de57606cSSage Weil 4382f276c51SYan, Zheng static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) 439de57606cSSage Weil { 4402f276c51SYan, Zheng return atomic_read(&ci->i_complete_count) == 4412f276c51SYan, Zheng atomic_read(&ci->i_release_count); 4422f276c51SYan, Zheng } 443de57606cSSage Weil 4442f276c51SYan, Zheng static inline void ceph_dir_clear_complete(struct inode *inode) 4452f276c51SYan, Zheng { 4462f276c51SYan, Zheng __ceph_dir_clear_complete(ceph_inode(inode)); 4472f276c51SYan, Zheng } 4482f276c51SYan, Zheng 4492f276c51SYan, Zheng static inline bool ceph_dir_is_complete(struct inode *inode) 4502f276c51SYan, Zheng { 4512f276c51SYan, Zheng return __ceph_dir_is_complete(ceph_inode(inode)); 452de57606cSSage Weil } 453de57606cSSage Weil 454de57606cSSage Weil 455de57606cSSage Weil /* find a specific frag @f */ 456de57606cSSage Weil extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, 457de57606cSSage Weil u32 f); 458de57606cSSage Weil 459de57606cSSage Weil /* 460de57606cSSage Weil * choose fragment for value @v. copy frag content to pfrag, if leaf 461de57606cSSage Weil * exists 462de57606cSSage Weil */ 463de57606cSSage Weil extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 464de57606cSSage Weil struct ceph_inode_frag *pfrag, 465de57606cSSage Weil int *found); 466de57606cSSage Weil 467de57606cSSage Weil static inline struct ceph_dentry_info *ceph_dentry(struct dentry *dentry) 468de57606cSSage Weil { 469de57606cSSage Weil return (struct ceph_dentry_info *)dentry->d_fsdata; 470de57606cSSage Weil } 471de57606cSSage Weil 472de57606cSSage Weil static inline loff_t ceph_make_fpos(unsigned frag, unsigned off) 473de57606cSSage Weil { 474de57606cSSage Weil return ((loff_t)frag << 32) | (loff_t)off; 475de57606cSSage Weil } 476de57606cSSage Weil 477de57606cSSage Weil /* 478de57606cSSage Weil * caps helpers 479de57606cSSage Weil */ 480de57606cSSage Weil static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) 481de57606cSSage Weil { 482de57606cSSage Weil return !RB_EMPTY_ROOT(&ci->i_caps); 483de57606cSSage Weil } 484de57606cSSage Weil 485de57606cSSage Weil extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); 486de57606cSSage Weil extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); 487de57606cSSage Weil extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, 488de57606cSSage Weil struct ceph_cap *cap); 489de57606cSSage Weil 490de57606cSSage Weil static inline int ceph_caps_issued(struct ceph_inode_info *ci) 491de57606cSSage Weil { 492de57606cSSage Weil int issued; 493be655596SSage Weil spin_lock(&ci->i_ceph_lock); 494de57606cSSage Weil issued = __ceph_caps_issued(ci, NULL); 495be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 496de57606cSSage Weil return issued; 497de57606cSSage Weil } 498de57606cSSage Weil 499de57606cSSage Weil static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, 500de57606cSSage Weil int touch) 501de57606cSSage Weil { 502de57606cSSage Weil int r; 503be655596SSage Weil spin_lock(&ci->i_ceph_lock); 504de57606cSSage Weil r = __ceph_caps_issued_mask(ci, mask, touch); 505be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 506de57606cSSage Weil return r; 507de57606cSSage Weil } 508de57606cSSage Weil 509de57606cSSage Weil static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) 510de57606cSSage Weil { 511de57606cSSage Weil return ci->i_dirty_caps | ci->i_flushing_caps; 512de57606cSSage Weil } 513fca65b4aSSage Weil extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask); 514de57606cSSage Weil 515de57606cSSage Weil extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); 516de57606cSSage Weil extern int __ceph_caps_used(struct ceph_inode_info *ci); 517de57606cSSage Weil 518de57606cSSage Weil extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); 519de57606cSSage Weil 520de57606cSSage Weil /* 521de57606cSSage Weil * wanted, by virtue of open file modes AND cap refs (buffered/cached data) 522de57606cSSage Weil */ 523de57606cSSage Weil static inline int __ceph_caps_wanted(struct ceph_inode_info *ci) 524de57606cSSage Weil { 525de57606cSSage Weil int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci); 526de57606cSSage Weil if (w & CEPH_CAP_FILE_BUFFER) 527de57606cSSage Weil w |= CEPH_CAP_FILE_EXCL; /* we want EXCL if dirty data */ 528de57606cSSage Weil return w; 529de57606cSSage Weil } 530de57606cSSage Weil 531de57606cSSage Weil /* what the mds thinks we want */ 532de57606cSSage Weil extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci); 533de57606cSSage Weil 53437151668SYehuda Sadeh extern void ceph_caps_init(struct ceph_mds_client *mdsc); 53537151668SYehuda Sadeh extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); 53637151668SYehuda Sadeh extern void ceph_adjust_min_caps(struct ceph_mds_client *mdsc, int delta); 53737151668SYehuda Sadeh extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, 53837151668SYehuda Sadeh struct ceph_cap_reservation *ctx, int need); 53937151668SYehuda Sadeh extern int ceph_unreserve_caps(struct ceph_mds_client *mdsc, 54037151668SYehuda Sadeh struct ceph_cap_reservation *ctx); 5413d14c5d2SYehuda Sadeh extern void ceph_reservation_status(struct ceph_fs_client *client, 542de57606cSSage Weil int *total, int *avail, int *used, 54385ccce43SSage Weil int *reserved, int *min); 544de57606cSSage Weil 545de57606cSSage Weil 546de57606cSSage Weil 547de57606cSSage Weil /* 548de57606cSSage Weil * we keep buffered readdir results attached to file->private_data 549de57606cSSage Weil */ 5504918b6d1SSage Weil #define CEPH_F_SYNC 1 5519cfa1098SSage Weil #define CEPH_F_ATEND 2 5524918b6d1SSage Weil 553de57606cSSage Weil struct ceph_file_info { 554252c6728SSage Weil short fmode; /* initialized on open */ 555252c6728SSage Weil short flags; /* CEPH_F_* */ 556de57606cSSage Weil 557de57606cSSage Weil /* readdir: position within the dir */ 558de57606cSSage Weil u32 frag; 559de57606cSSage Weil struct ceph_mds_request *last_readdir; 560de57606cSSage Weil 561de57606cSSage Weil /* readdir: position within a frag */ 562de57606cSSage Weil unsigned offset; /* offset of last chunk, adjusted for . and .. */ 563de57606cSSage Weil u64 next_offset; /* offset of next chunk (last_name's + 1) */ 564de57606cSSage Weil char *last_name; /* last entry in previous chunk */ 565de57606cSSage Weil struct dentry *dentry; /* next dentry (for dcache readdir) */ 5662f276c51SYan, Zheng int dir_release_count; 567de57606cSSage Weil 568de57606cSSage Weil /* used for -o dirstat read() on directory thing */ 569de57606cSSage Weil char *dir_info; 570de57606cSSage Weil int dir_info_len; 571de57606cSSage Weil }; 572de57606cSSage Weil 573de57606cSSage Weil 574de57606cSSage Weil 575de57606cSSage Weil /* 576de57606cSSage Weil * A "snap realm" describes a subset of the file hierarchy sharing 577de57606cSSage Weil * the same set of snapshots that apply to it. The realms themselves 578de57606cSSage Weil * are organized into a hierarchy, such that children inherit (some of) 579de57606cSSage Weil * the snapshots of their parents. 580de57606cSSage Weil * 581de57606cSSage Weil * All inodes within the realm that have capabilities are linked into a 582de57606cSSage Weil * per-realm list. 583de57606cSSage Weil */ 584de57606cSSage Weil struct ceph_snap_realm { 585de57606cSSage Weil u64 ino; 586de57606cSSage Weil atomic_t nref; 587a105f00cSSage Weil struct rb_node node; 588a105f00cSSage Weil 589de57606cSSage Weil u64 created, seq; 590de57606cSSage Weil u64 parent_ino; 591de57606cSSage Weil u64 parent_since; /* snapid when our current parent became so */ 592de57606cSSage Weil 593de57606cSSage Weil u64 *prior_parent_snaps; /* snaps inherited from any parents we */ 594aa711ee3SAlex Elder u32 num_prior_parent_snaps; /* had prior to parent_since */ 595de57606cSSage Weil u64 *snaps; /* snaps specific to this realm */ 596aa711ee3SAlex Elder u32 num_snaps; 597de57606cSSage Weil 598de57606cSSage Weil struct ceph_snap_realm *parent; 599de57606cSSage Weil struct list_head children; /* list of child realms */ 600de57606cSSage Weil struct list_head child_item; 601de57606cSSage Weil 602de57606cSSage Weil struct list_head empty_item; /* if i have ref==0 */ 603de57606cSSage Weil 604ae00d4f3SSage Weil struct list_head dirty_item; /* if realm needs new context */ 605ae00d4f3SSage Weil 606de57606cSSage Weil /* the current set of snaps for this realm */ 607de57606cSSage Weil struct ceph_snap_context *cached_context; 608de57606cSSage Weil 609de57606cSSage Weil struct list_head inodes_with_caps; 610de57606cSSage Weil spinlock_t inodes_with_caps_lock; 611de57606cSSage Weil }; 612de57606cSSage Weil 6133d14c5d2SYehuda Sadeh static inline int default_congestion_kb(void) 6143d14c5d2SYehuda Sadeh { 6153d14c5d2SYehuda Sadeh int congestion_kb; 616de57606cSSage Weil 617de57606cSSage Weil /* 6183d14c5d2SYehuda Sadeh * Copied from NFS 6193d14c5d2SYehuda Sadeh * 6203d14c5d2SYehuda Sadeh * congestion size, scale with available memory. 6213d14c5d2SYehuda Sadeh * 6223d14c5d2SYehuda Sadeh * 64MB: 8192k 6233d14c5d2SYehuda Sadeh * 128MB: 11585k 6243d14c5d2SYehuda Sadeh * 256MB: 16384k 6253d14c5d2SYehuda Sadeh * 512MB: 23170k 6263d14c5d2SYehuda Sadeh * 1GB: 32768k 6273d14c5d2SYehuda Sadeh * 2GB: 46340k 6283d14c5d2SYehuda Sadeh * 4GB: 65536k 6293d14c5d2SYehuda Sadeh * 8GB: 92681k 6303d14c5d2SYehuda Sadeh * 16GB: 131072k 6313d14c5d2SYehuda Sadeh * 6323d14c5d2SYehuda Sadeh * This allows larger machines to have larger/more transfers. 6333d14c5d2SYehuda Sadeh * Limit the default to 256M 634de57606cSSage Weil */ 6353d14c5d2SYehuda Sadeh congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10); 6363d14c5d2SYehuda Sadeh if (congestion_kb > 256*1024) 6373d14c5d2SYehuda Sadeh congestion_kb = 256*1024; 6383d14c5d2SYehuda Sadeh 6393d14c5d2SYehuda Sadeh return congestion_kb; 640de57606cSSage Weil } 641de57606cSSage Weil 642de57606cSSage Weil 643de57606cSSage Weil 644de57606cSSage Weil /* snap.c */ 645de57606cSSage Weil struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, 646de57606cSSage Weil u64 ino); 647de57606cSSage Weil extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, 648de57606cSSage Weil struct ceph_snap_realm *realm); 649de57606cSSage Weil extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, 650de57606cSSage Weil struct ceph_snap_realm *realm); 651de57606cSSage Weil extern int ceph_update_snap_trace(struct ceph_mds_client *m, 652de57606cSSage Weil void *p, void *e, bool deletion); 653de57606cSSage Weil extern void ceph_handle_snap(struct ceph_mds_client *mdsc, 6542600d2ddSSage Weil struct ceph_mds_session *session, 655de57606cSSage Weil struct ceph_msg *msg); 656fc837c8fSSage Weil extern void ceph_queue_cap_snap(struct ceph_inode_info *ci); 657de57606cSSage Weil extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, 658de57606cSSage Weil struct ceph_cap_snap *capsnap); 659de57606cSSage Weil extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); 660de57606cSSage Weil 661de57606cSSage Weil /* 662de57606cSSage Weil * a cap_snap is "pending" if it is still awaiting an in-progress 663de57606cSSage Weil * sync write (that may/may not still update size, mtime, etc.). 664de57606cSSage Weil */ 665de57606cSSage Weil static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) 666de57606cSSage Weil { 667de57606cSSage Weil return !list_empty(&ci->i_cap_snaps) && 668de57606cSSage Weil list_entry(ci->i_cap_snaps.prev, struct ceph_cap_snap, 669de57606cSSage Weil ci_item)->writing; 670de57606cSSage Weil } 671de57606cSSage Weil 672de57606cSSage Weil /* inode.c */ 673de57606cSSage Weil extern const struct inode_operations ceph_file_iops; 674de57606cSSage Weil 675de57606cSSage Weil extern struct inode *ceph_alloc_inode(struct super_block *sb); 676de57606cSSage Weil extern void ceph_destroy_inode(struct inode *inode); 677de57606cSSage Weil 678de57606cSSage Weil extern struct inode *ceph_get_inode(struct super_block *sb, 679de57606cSSage Weil struct ceph_vino vino); 680de57606cSSage Weil extern struct inode *ceph_get_snapdir(struct inode *parent); 681de57606cSSage Weil extern int ceph_fill_file_size(struct inode *inode, int issued, 682de57606cSSage Weil u32 truncate_seq, u64 truncate_size, u64 size); 683de57606cSSage Weil extern void ceph_fill_file_time(struct inode *inode, int issued, 684de57606cSSage Weil u64 time_warp_seq, struct timespec *ctime, 685de57606cSSage Weil struct timespec *mtime, struct timespec *atime); 686de57606cSSage Weil extern int ceph_fill_trace(struct super_block *sb, 687de57606cSSage Weil struct ceph_mds_request *req, 688de57606cSSage Weil struct ceph_mds_session *session); 689de57606cSSage Weil extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, 690de57606cSSage Weil struct ceph_mds_session *session); 691de57606cSSage Weil 692de57606cSSage Weil extern int ceph_inode_holds_cap(struct inode *inode, int mask); 693de57606cSSage Weil 694de57606cSSage Weil extern int ceph_inode_set_size(struct inode *inode, loff_t size); 6953f99969fSYan, Zheng extern void __ceph_do_pending_vmtruncate(struct inode *inode, bool needlock); 6963c6f6b79SSage Weil extern void ceph_queue_vmtruncate(struct inode *inode); 6973c6f6b79SSage Weil 6983c6f6b79SSage Weil extern void ceph_queue_invalidate(struct inode *inode); 6993c6f6b79SSage Weil extern void ceph_queue_writeback(struct inode *inode); 700de57606cSSage Weil 701de57606cSSage Weil extern int ceph_do_getattr(struct inode *inode, int mask); 70210556cb2SAl Viro extern int ceph_permission(struct inode *inode, int mask); 703de57606cSSage Weil extern int ceph_setattr(struct dentry *dentry, struct iattr *attr); 704de57606cSSage Weil extern int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, 705de57606cSSage Weil struct kstat *stat); 706de57606cSSage Weil 707de57606cSSage Weil /* xattr.c */ 708de57606cSSage Weil extern int ceph_setxattr(struct dentry *, const char *, const void *, 709de57606cSSage Weil size_t, int); 710de57606cSSage Weil extern ssize_t ceph_getxattr(struct dentry *, const char *, void *, size_t); 711de57606cSSage Weil extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); 712de57606cSSage Weil extern int ceph_removexattr(struct dentry *, const char *); 713de57606cSSage Weil extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci); 714de57606cSSage Weil extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); 7153ce6cd12SAlex Elder extern void __init ceph_xattr_init(void); 7163ce6cd12SAlex Elder extern void ceph_xattr_exit(void); 717de57606cSSage Weil 718de57606cSSage Weil /* caps.c */ 719de57606cSSage Weil extern const char *ceph_cap_string(int c); 720de57606cSSage Weil extern void ceph_handle_caps(struct ceph_mds_session *session, 721de57606cSSage Weil struct ceph_msg *msg); 722de57606cSSage Weil extern int ceph_add_cap(struct inode *inode, 723de57606cSSage Weil struct ceph_mds_session *session, u64 cap_id, 724de57606cSSage Weil int fmode, unsigned issued, unsigned wanted, 725de57606cSSage Weil unsigned cap, unsigned seq, u64 realmino, int flags, 726de57606cSSage Weil struct ceph_cap_reservation *caps_reservation); 7277c1332b8SSage Weil extern void __ceph_remove_cap(struct ceph_cap *cap); 728de57606cSSage Weil static inline void ceph_remove_cap(struct ceph_cap *cap) 729de57606cSSage Weil { 730be655596SSage Weil spin_lock(&cap->ci->i_ceph_lock); 7317c1332b8SSage Weil __ceph_remove_cap(cap); 732be655596SSage Weil spin_unlock(&cap->ci->i_ceph_lock); 733de57606cSSage Weil } 73437151668SYehuda Sadeh extern void ceph_put_cap(struct ceph_mds_client *mdsc, 73537151668SYehuda Sadeh struct ceph_cap *cap); 736de57606cSSage Weil 737d40ee0dcSYan, Zheng extern void __queue_cap_release(struct ceph_mds_session *session, u64 ino, 738d40ee0dcSYan, Zheng u64 cap_id, u32 migrate_seq, u32 issue_seq); 739de57606cSSage Weil extern void ceph_queue_caps_release(struct inode *inode); 740f1a3d572SStephen Rothwell extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); 74102c24a82SJosef Bacik extern int ceph_fsync(struct file *file, loff_t start, loff_t end, 74202c24a82SJosef Bacik int datasync); 743de57606cSSage Weil extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, 744de57606cSSage Weil struct ceph_mds_session *session); 7452bc50259SGreg Farnum extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, 7462bc50259SGreg Farnum int mds); 747de57606cSSage Weil extern int ceph_get_cap_mds(struct inode *inode); 748de57606cSSage Weil extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); 749de57606cSSage Weil extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); 750de57606cSSage Weil extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, 751de57606cSSage Weil struct ceph_snap_context *snapc); 752de57606cSSage Weil extern void __ceph_flush_snaps(struct ceph_inode_info *ci, 753e835124cSSage Weil struct ceph_mds_session **psession, 754e835124cSSage Weil int again); 755de57606cSSage Weil extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, 756de57606cSSage Weil struct ceph_mds_session *session); 757afcdaea3SSage Weil extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc); 758afcdaea3SSage Weil extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); 759de57606cSSage Weil 760de57606cSSage Weil extern int ceph_encode_inode_release(void **p, struct inode *inode, 761de57606cSSage Weil int mds, int drop, int unless, int force); 762de57606cSSage Weil extern int ceph_encode_dentry_release(void **p, struct dentry *dn, 763de57606cSSage Weil int mds, int drop, int unless); 764de57606cSSage Weil 765de57606cSSage Weil extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, 766de57606cSSage Weil int *got, loff_t endoff); 767de57606cSSage Weil 768de57606cSSage Weil /* for counting open files by mode */ 769de57606cSSage Weil static inline void __ceph_get_fmode(struct ceph_inode_info *ci, int mode) 770de57606cSSage Weil { 771de57606cSSage Weil ci->i_nr_by_mode[mode]++; 772de57606cSSage Weil } 773de57606cSSage Weil extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode); 774de57606cSSage Weil 775de57606cSSage Weil /* addr.c */ 776de57606cSSage Weil extern const struct address_space_operations ceph_aops; 777de57606cSSage Weil extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); 778de57606cSSage Weil 779de57606cSSage Weil /* file.c */ 780de57606cSSage Weil extern const struct file_operations ceph_file_fops; 781de57606cSSage Weil extern const struct address_space_operations ceph_aops; 7829e0eb85dSAlex Elder 783de57606cSSage Weil extern int ceph_open(struct inode *inode, struct file *file); 7845ef50c3bSSage Weil extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, 7855ef50c3bSSage Weil struct file *file, unsigned flags, umode_t mode, 7865ef50c3bSSage Weil int *opened); 787de57606cSSage Weil extern int ceph_release(struct inode *inode, struct file *filp); 788de57606cSSage Weil 789de57606cSSage Weil /* dir.c */ 790de57606cSSage Weil extern const struct file_operations ceph_dir_fops; 791de57606cSSage Weil extern const struct inode_operations ceph_dir_iops; 79252dfb8acSSage Weil extern const struct dentry_operations ceph_dentry_ops, ceph_snap_dentry_ops, 793de57606cSSage Weil ceph_snapdir_dentry_ops; 794de57606cSSage Weil 795de57606cSSage Weil extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); 796468640e3SSage Weil extern int ceph_handle_snapdir(struct ceph_mds_request *req, 797468640e3SSage Weil struct dentry *dentry, int err); 798de57606cSSage Weil extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, 799de57606cSSage Weil struct dentry *dentry, int err); 800de57606cSSage Weil 801de57606cSSage Weil extern void ceph_dentry_lru_add(struct dentry *dn); 802de57606cSSage Weil extern void ceph_dentry_lru_touch(struct dentry *dn); 803de57606cSSage Weil extern void ceph_dentry_lru_del(struct dentry *dn); 80481a6cf2dSSage Weil extern void ceph_invalidate_dentry_lease(struct dentry *dentry); 805e5f86dc3SSage Weil extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); 8065f21c96dSSage Weil extern struct inode *ceph_get_dentry_parent_inode(struct dentry *dentry); 807de57606cSSage Weil 808de57606cSSage Weil /* 809de57606cSSage Weil * our d_ops vary depending on whether the inode is live, 810de57606cSSage Weil * snapshotted (read-only), or a virtual ".snap" directory. 811de57606cSSage Weil */ 812de57606cSSage Weil int ceph_init_dentry(struct dentry *dentry); 813de57606cSSage Weil 814de57606cSSage Weil 815de57606cSSage Weil /* ioctl.c */ 816de57606cSSage Weil extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 817de57606cSSage Weil 818de57606cSSage Weil /* export.c */ 819de57606cSSage Weil extern const struct export_operations ceph_export_ops; 820de57606cSSage Weil 82140819f6fSGreg Farnum /* locks.c */ 82240819f6fSGreg Farnum extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); 82340819f6fSGreg Farnum extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); 82440819f6fSGreg Farnum extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); 825*39be95e9SJim Schutt extern int ceph_encode_locks_to_buffer(struct inode *inode, 826*39be95e9SJim Schutt struct ceph_filelock *flocks, 827*39be95e9SJim Schutt int num_fcntl_locks, 828*39be95e9SJim Schutt int num_flock_locks); 829*39be95e9SJim Schutt extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, 830*39be95e9SJim Schutt struct ceph_pagelist *pagelist, 831*39be95e9SJim Schutt int num_fcntl_locks, int num_flock_locks); 83240819f6fSGreg Farnum extern int lock_to_ceph_filelock(struct file_lock *fl, struct ceph_filelock *c); 83340819f6fSGreg Farnum 8343d14c5d2SYehuda Sadeh /* debugfs.c */ 8353d14c5d2SYehuda Sadeh extern int ceph_fs_debugfs_init(struct ceph_fs_client *client); 8363d14c5d2SYehuda Sadeh extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); 8373d14c5d2SYehuda Sadeh 838de57606cSSage Weil #endif /* _FS_CEPH_SUPER_H */ 839