1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2de57606cSSage Weil #ifndef _FS_CEPH_SUPER_H 3de57606cSSage Weil #define _FS_CEPH_SUPER_H 4de57606cSSage Weil 53d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 6de57606cSSage Weil 7de57606cSSage Weil #include <asm/unaligned.h> 8de57606cSSage Weil #include <linux/backing-dev.h> 9de57606cSSage Weil #include <linux/completion.h> 10de57606cSSage Weil #include <linux/exportfs.h> 11de57606cSSage Weil #include <linux/fs.h> 12de57606cSSage Weil #include <linux/mempool.h> 13de57606cSSage Weil #include <linux/pagemap.h> 14de57606cSSage Weil #include <linux/wait.h> 15f1a3d572SStephen Rothwell #include <linux/writeback.h> 165a0e3ad6STejun Heo #include <linux/slab.h> 17c969d9bfSGuangliang Zhao #include <linux/posix_acl.h> 18805692d0SElena Reshetova #include <linux/refcount.h> 19de57606cSSage Weil 203d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 21de57606cSSage Weil 2299ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 2399ccbd22SMilosz Tanski #include <linux/fscache.h> 2499ccbd22SMilosz Tanski #endif 2599ccbd22SMilosz Tanski 26de57606cSSage Weil /* f_type in struct statfs */ 27de57606cSSage Weil #define CEPH_SUPER_MAGIC 0x00c36400 28de57606cSSage Weil 29de57606cSSage Weil /* large granularity for statfs utilization stats to facilitate 30de57606cSSage Weil * large volume sizes on 32-bit machines. */ 3192a49fb0SSage Weil #define CEPH_BLOCK_SHIFT 22 /* 4 MB */ 32de57606cSSage Weil #define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) 33de57606cSSage Weil 343d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ 353d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ 363d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ 37ad1fee96SYehuda Sadeh #define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ 38a40dc6ccSSage Weil #define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ 3999ccbd22SMilosz Tanski #define CEPH_MOUNT_OPT_FSCACHE (1<<10) /* use fscache */ 4010183a69SYan, Zheng #define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11) /* no pool permission check */ 41e9e427f0SYan, Zheng #define CEPH_MOUNT_OPT_MOUNTWAIT (1<<12) /* mount waits if no mds is up */ 429122eed5SLuis Henriques #define CEPH_MOUNT_OPT_NOQUOTADF (1<<13) /* no root dir quota in statfs */ 43ea4cdc54SLuis Henriques #define CEPH_MOUNT_OPT_NOCOPYFROM (1<<14) /* don't use RADOS 'copy-from' op */ 446a259382SSage Weil 456f9718feSLuis Henriques #define CEPH_MOUNT_OPT_DEFAULT \ 466f9718feSLuis Henriques (CEPH_MOUNT_OPT_DCACHE | \ 476f9718feSLuis Henriques CEPH_MOUNT_OPT_NOCOPYFROM) 48de57606cSSage Weil 493d14c5d2SYehuda Sadeh #define ceph_set_mount_opt(fsc, opt) \ 503d14c5d2SYehuda Sadeh (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt; 513d14c5d2SYehuda Sadeh #define ceph_test_mount_opt(fsc, opt) \ 523d14c5d2SYehuda Sadeh (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) 53de57606cSSage Weil 54aa187926SYan, Zheng /* max size of osd read request, limited by libceph */ 55aa187926SYan, Zheng #define CEPH_MAX_READ_SIZE CEPH_MSG_MAX_DATA_LEN 5695cca2b4SYan, Zheng /* osd has a configurable limitaion of max write size. 5795cca2b4SYan, Zheng * CEPH_MSG_MAX_DATA_LEN should be small enough. */ 5895cca2b4SYan, Zheng #define CEPH_MAX_WRITE_SIZE CEPH_MSG_MAX_DATA_LEN 597c94ba27SAndreas Gerstmayr #define CEPH_RASIZE_DEFAULT (8192*1024) /* max readahead */ 603d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_DEFAULT 1024 613d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) 623d14c5d2SYehuda Sadeh #define CEPH_SNAPDIRNAME_DEFAULT ".snap" 63de57606cSSage Weil 644214fb15SYan, Zheng /* 654214fb15SYan, Zheng * Delay telling the MDS we no longer want caps, in case we reopen 664214fb15SYan, Zheng * the file. Delay a minimum amount of time, even if we send a cap 674214fb15SYan, Zheng * message for some other reason. Otherwise, take the oppotunity to 684214fb15SYan, Zheng * update the mds to avoid sending another message later. 694214fb15SYan, Zheng */ 704214fb15SYan, Zheng #define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */ 714214fb15SYan, Zheng #define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */ 724214fb15SYan, Zheng 733d14c5d2SYehuda Sadeh struct ceph_mount_options { 74de57606cSSage Weil int flags; 753d14c5d2SYehuda Sadeh int sb_flags; 763d14c5d2SYehuda Sadeh 7783817e35SSage Weil int wsize; /* max write size */ 7883817e35SSage Weil int rsize; /* max read size */ 7983817e35SSage Weil int rasize; /* max readahead */ 806e19a16eSSage Weil int congestion_kb; /* max writeback in flight */ 816e19a16eSSage Weil int caps_wanted_delay_min, caps_wanted_delay_max; 82fe33032dSYan, Zheng int caps_max; 8323804d91SSage Weil int max_readdir; /* max readdir result (entires) */ 8423804d91SSage Weil int max_readdir_bytes; /* max readdir result (bytes) */ 853d14c5d2SYehuda Sadeh 863d14c5d2SYehuda Sadeh /* 873d14c5d2SYehuda Sadeh * everything above this point can be memcmp'd; everything below 883d14c5d2SYehuda Sadeh * is handled in compare_mount_options() 893d14c5d2SYehuda Sadeh */ 903d14c5d2SYehuda Sadeh 91de57606cSSage Weil char *snapdir_name; /* default ".snap" */ 92430afbadSYan, Zheng char *mds_namespace; /* default NULL */ 933f384954SYan, Zheng char *server_path; /* default "/" */ 941d8f8360SYan, Zheng char *fscache_uniq; /* default NULL */ 95de57606cSSage Weil }; 96de57606cSSage Weil 973d14c5d2SYehuda Sadeh struct ceph_fs_client { 98de57606cSSage Weil struct super_block *sb; 99de57606cSSage Weil 1003d14c5d2SYehuda Sadeh struct ceph_mount_options *mount_options; 1013d14c5d2SYehuda Sadeh struct ceph_client *client; 1023d14c5d2SYehuda Sadeh 103de57606cSSage Weil unsigned long mount_state; 104719784baSChengguang Xu loff_t max_file_size; 10585ccce43SSage Weil 1063d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc; 107de57606cSSage Weil 108de57606cSSage Weil /* writeback */ 109de57606cSSage Weil mempool_t *wb_pagevec_pool; 110e3ec8d68SYan, Zheng atomic_long_t writeback_count; 111e3ec8d68SYan, Zheng 112*1cf89a8dSYan, Zheng struct workqueue_struct *inode_wq; 113e3ec8d68SYan, Zheng struct workqueue_struct *cap_wq; 114de57606cSSage Weil 1150743304dSSage Weil #ifdef CONFIG_DEBUG_FS 1163d14c5d2SYehuda Sadeh struct dentry *debugfs_dentry_lru, *debugfs_caps; 1172baba250SYehuda Sadeh struct dentry *debugfs_congestion_kb; 11806edf046SSage Weil struct dentry *debugfs_bdi; 1193d14c5d2SYehuda Sadeh struct dentry *debugfs_mdsc, *debugfs_mdsmap; 12014ed9703SJohn Spray struct dentry *debugfs_mds_sessions; 1210743304dSSage Weil #endif 12299ccbd22SMilosz Tanski 12399ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 12499ccbd22SMilosz Tanski struct fscache_cookie *fscache; 12599ccbd22SMilosz Tanski #endif 126de57606cSSage Weil }; 127de57606cSSage Weil 1283d14c5d2SYehuda Sadeh 129de57606cSSage Weil /* 130de57606cSSage Weil * File i/o capability. This tracks shared state with the metadata 131de57606cSSage Weil * server that allows us to cache or writeback attributes or to read 132de57606cSSage Weil * and write data. For any given inode, we should have one or more 133de57606cSSage Weil * capabilities, one issued by each metadata server, and our 134de57606cSSage Weil * cumulative access is the OR of all issued capabilities. 135de57606cSSage Weil * 136de57606cSSage Weil * Each cap is referenced by the inode's i_caps rbtree and by per-mds 137de57606cSSage Weil * session capability lists. 138de57606cSSage Weil */ 139de57606cSSage Weil struct ceph_cap { 140de57606cSSage Weil struct ceph_inode_info *ci; 141de57606cSSage Weil struct rb_node ci_node; /* per-ci cap tree */ 142de57606cSSage Weil struct ceph_mds_session *session; 143de57606cSSage Weil struct list_head session_caps; /* per-session caplist */ 144de57606cSSage Weil u64 cap_id; /* unique cap id (mds provided) */ 145745a8e3bSYan, Zheng union { 146745a8e3bSYan, Zheng /* in-use caps */ 147745a8e3bSYan, Zheng struct { 148de57606cSSage Weil int issued; /* latest, from the mds */ 149745a8e3bSYan, Zheng int implemented; /* implemented superset of 150745a8e3bSYan, Zheng issued (for revocation) */ 151745a8e3bSYan, Zheng int mds, mds_wanted; 152745a8e3bSYan, Zheng }; 153745a8e3bSYan, Zheng /* caps to release */ 154745a8e3bSYan, Zheng struct { 155745a8e3bSYan, Zheng u64 cap_ino; 156745a8e3bSYan, Zheng int queue_release; 157745a8e3bSYan, Zheng }; 158745a8e3bSYan, Zheng }; 159685f9a5dSSage Weil u32 seq, issue_seq, mseq; 160685f9a5dSSage Weil u32 cap_gen; /* active/stale cycle */ 161de57606cSSage Weil unsigned long last_used; 162de57606cSSage Weil struct list_head caps_item; 163de57606cSSage Weil }; 164de57606cSSage Weil 165de57606cSSage Weil #define CHECK_CAPS_NODELAY 1 /* do not delay any further */ 166de57606cSSage Weil #define CHECK_CAPS_AUTHONLY 2 /* only check auth cap */ 167de57606cSSage Weil #define CHECK_CAPS_FLUSH 4 /* flush any dirty caps */ 168de57606cSSage Weil 1690e294387SYan, Zheng struct ceph_cap_flush { 1700e294387SYan, Zheng u64 tid; 1710e294387SYan, Zheng int caps; /* 0 means capsnap */ 172c8799fc4SYan, Zheng bool wake; /* wake up flush waiters when finish ? */ 1730e294387SYan, Zheng struct list_head g_list; // global 1740e294387SYan, Zheng struct list_head i_list; // per inode 1750e294387SYan, Zheng }; 1760e294387SYan, Zheng 177de57606cSSage Weil /* 178de57606cSSage Weil * Snapped cap state that is pending flush to mds. When a snapshot occurs, 179de57606cSSage Weil * we first complete any in-process sync writes and writeback any dirty 180de57606cSSage Weil * data before flushing the snapped state (tracked here) back to the MDS. 181de57606cSSage Weil */ 182de57606cSSage Weil struct ceph_cap_snap { 183805692d0SElena Reshetova refcount_t nref; 1840e294387SYan, Zheng struct list_head ci_item; 185de57606cSSage Weil 1860e294387SYan, Zheng struct ceph_cap_flush cap_flush; 1870e294387SYan, Zheng 1880e294387SYan, Zheng u64 follows; 189de57606cSSage Weil int issued, dirty; 190de57606cSSage Weil struct ceph_snap_context *context; 191de57606cSSage Weil 1925706b27dSAl Viro umode_t mode; 19305cb11c1SEric W. Biederman kuid_t uid; 19405cb11c1SEric W. Biederman kgid_t gid; 195de57606cSSage Weil 1964a625be4SSage Weil struct ceph_buffer *xattr_blob; 197de57606cSSage Weil u64 xattr_version; 198de57606cSSage Weil 199de57606cSSage Weil u64 size; 2009bbeab41SArnd Bergmann struct timespec64 mtime, atime, ctime; 201de57606cSSage Weil u64 time_warp_seq; 2025f743e45SYan, Zheng u64 truncate_size; 2035f743e45SYan, Zheng u32 truncate_seq; 204de57606cSSage Weil int writing; /* a sync write is still in progress */ 205de57606cSSage Weil int dirty_pages; /* dirty pages awaiting writeback */ 206e20d258dSYan, Zheng bool inline_data; 20786056090SYan, Zheng bool need_flush; 208de57606cSSage Weil }; 209de57606cSSage Weil 210de57606cSSage Weil static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) 211de57606cSSage Weil { 212805692d0SElena Reshetova if (refcount_dec_and_test(&capsnap->nref)) { 2134a625be4SSage Weil if (capsnap->xattr_blob) 2144a625be4SSage Weil ceph_buffer_put(capsnap->xattr_blob); 215de57606cSSage Weil kfree(capsnap); 216de57606cSSage Weil } 2174a625be4SSage Weil } 218de57606cSSage Weil 219de57606cSSage Weil /* 220de57606cSSage Weil * The frag tree describes how a directory is fragmented, potentially across 221de57606cSSage Weil * multiple metadata servers. It is also used to indicate points where 222de57606cSSage Weil * metadata authority is delegated, and whether/where metadata is replicated. 223de57606cSSage Weil * 224de57606cSSage Weil * A _leaf_ frag will be present in the i_fragtree IFF there is 225de57606cSSage Weil * delegation info. That is, if mds >= 0 || ndist > 0. 226de57606cSSage Weil */ 227de57606cSSage Weil #define CEPH_MAX_DIRFRAG_REP 4 228de57606cSSage Weil 229de57606cSSage Weil struct ceph_inode_frag { 230de57606cSSage Weil struct rb_node node; 231de57606cSSage Weil 232de57606cSSage Weil /* fragtree state */ 233de57606cSSage Weil u32 frag; 234de57606cSSage Weil int split_by; /* i.e. 2^(split_by) children */ 235de57606cSSage Weil 236de57606cSSage Weil /* delegation and replication info */ 237de57606cSSage Weil int mds; /* -1 if same authority as parent */ 238de57606cSSage Weil int ndist; /* >0 if replicated */ 239de57606cSSage Weil int dist[CEPH_MAX_DIRFRAG_REP]; 240de57606cSSage Weil }; 241de57606cSSage Weil 242de57606cSSage Weil /* 243de57606cSSage Weil * We cache inode xattrs as an encoded blob until they are first used, 244de57606cSSage Weil * at which point we parse them into an rbtree. 245de57606cSSage Weil */ 246de57606cSSage Weil struct ceph_inode_xattr { 247de57606cSSage Weil struct rb_node node; 248de57606cSSage Weil 249de57606cSSage Weil const char *name; 250de57606cSSage Weil int name_len; 251de57606cSSage Weil const char *val; 252de57606cSSage Weil int val_len; 253de57606cSSage Weil int dirty; 254de57606cSSage Weil 255de57606cSSage Weil int should_free_name; 256de57606cSSage Weil int should_free_val; 257de57606cSSage Weil }; 258de57606cSSage Weil 2593d14c5d2SYehuda Sadeh /* 2603d14c5d2SYehuda Sadeh * Ceph dentry state 2613d14c5d2SYehuda Sadeh */ 2623d14c5d2SYehuda Sadeh struct ceph_dentry_info { 26337c4efc1SYan, Zheng struct dentry *dentry; 2643d14c5d2SYehuda Sadeh struct ceph_mds_session *lease_session; 26537c4efc1SYan, Zheng struct list_head lease_list; 26637c4efc1SYan, Zheng unsigned flags; 26797aeb6bfSYan, Zheng int lease_shared_gen; 26897aeb6bfSYan, Zheng u32 lease_gen; 2693d14c5d2SYehuda Sadeh u32 lease_seq; 2703d14c5d2SYehuda Sadeh unsigned long lease_renew_after, lease_renew_from; 2719b16f03cSMiklos Szeredi unsigned long time; 2723d14c5d2SYehuda Sadeh u64 offset; 2733d14c5d2SYehuda Sadeh }; 2743d14c5d2SYehuda Sadeh 27537c4efc1SYan, Zheng #define CEPH_DENTRY_REFERENCED 1 27637c4efc1SYan, Zheng #define CEPH_DENTRY_LEASE_LIST 2 27737c4efc1SYan, Zheng #define CEPH_DENTRY_SHRINK_LIST 4 27837c4efc1SYan, Zheng 279de57606cSSage Weil struct ceph_inode_xattrs_info { 280de57606cSSage Weil /* 281de57606cSSage Weil * (still encoded) xattr blob. we avoid the overhead of parsing 282de57606cSSage Weil * this until someone actually calls getxattr, etc. 283de57606cSSage Weil * 284de57606cSSage Weil * blob->vec.iov_len == 4 implies there are no xattrs; blob == 285de57606cSSage Weil * NULL means we don't know. 286de57606cSSage Weil */ 287de57606cSSage Weil struct ceph_buffer *blob, *prealloc_blob; 288de57606cSSage Weil 289de57606cSSage Weil struct rb_root index; 290de57606cSSage Weil bool dirty; 291de57606cSSage Weil int count; 292de57606cSSage Weil int names_size; 293de57606cSSage Weil int vals_size; 294de57606cSSage Weil u64 version, index_version; 295de57606cSSage Weil }; 296de57606cSSage Weil 297de57606cSSage Weil /* 298de57606cSSage Weil * Ceph inode. 299de57606cSSage Weil */ 300de57606cSSage Weil struct ceph_inode_info { 301de57606cSSage Weil struct ceph_vino i_vino; /* ceph ino + snap */ 302de57606cSSage Weil 303be655596SSage Weil spinlock_t i_ceph_lock; 304be655596SSage Weil 305de57606cSSage Weil u64 i_version; 30631c542a1SYan, Zheng u64 i_inline_version; 307de57606cSSage Weil u32 i_time_warp_seq; 308de57606cSSage Weil 309de57606cSSage Weil unsigned i_ceph_flags; 310fdd4e158SYan, Zheng atomic64_t i_release_count; 311fdd4e158SYan, Zheng atomic64_t i_ordered_count; 312fdd4e158SYan, Zheng atomic64_t i_complete_seq[2]; 313de57606cSSage Weil 3146c0f3af7SSage Weil struct ceph_dir_layout i_dir_layout; 315de57606cSSage Weil struct ceph_file_layout i_layout; 316de57606cSSage Weil char *i_symlink; 317de57606cSSage Weil 318de57606cSSage Weil /* for dirs */ 3199bbeab41SArnd Bergmann struct timespec64 i_rctime; 320de57606cSSage Weil u64 i_rbytes, i_rfiles, i_rsubdirs; 321de57606cSSage Weil u64 i_files, i_subdirs; 322de57606cSSage Weil 323fb18a575SLuis Henriques /* quotas */ 324fb18a575SLuis Henriques u64 i_max_bytes, i_max_files; 325fb18a575SLuis Henriques 32608796873SYan, Zheng s32 i_dir_pin; 32708796873SYan, Zheng 328de57606cSSage Weil struct rb_root i_fragtree; 3291b1bc16dSYan, Zheng int i_fragtree_nsplits; 330de57606cSSage Weil struct mutex i_fragtree_mutex; 331de57606cSSage Weil 332de57606cSSage Weil struct ceph_inode_xattrs_info i_xattrs; 333de57606cSSage Weil 334be655596SSage Weil /* capabilities. protected _both_ by i_ceph_lock and cap->session's 335de57606cSSage Weil * s_mutex. */ 336de57606cSSage Weil struct rb_root i_caps; /* cap list */ 337de57606cSSage Weil struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ 338de57606cSSage Weil unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ 339de57606cSSage Weil struct list_head i_dirty_item, i_flushing_item; 340de57606cSSage Weil /* we need to track cap writeback on a per-cap-bit basis, to allow 341de57606cSSage Weil * overlapping, pipelined cap flushes to the mds. we can probably 342de57606cSSage Weil * reduce the tid to 8 bits if we're concerned about inode size. */ 343f66fd9f0SYan, Zheng struct ceph_cap_flush *i_prealloc_cap_flush; 344e4500b5eSYan, Zheng struct list_head i_cap_flush_list; 345de57606cSSage Weil wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ 346de57606cSSage Weil unsigned long i_hold_caps_min; /* jiffies */ 347de57606cSSage Weil unsigned long i_hold_caps_max; /* jiffies */ 348de57606cSSage Weil struct list_head i_cap_delay_list; /* for delayed cap release to mds */ 349de57606cSSage Weil struct ceph_cap_reservation i_cap_migration_resv; 350de57606cSSage Weil struct list_head i_cap_snaps; /* snapped state pending flush to mds */ 3517d8cb26dSSage Weil struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or 3527d8cb26dSSage Weil dirty|flushing caps */ 353de57606cSSage Weil unsigned i_snap_caps; /* cap bits for snapped files */ 354de57606cSSage Weil 355774a6a11SYan, Zheng int i_nr_by_mode[CEPH_FILE_MODE_BITS]; /* open file counts */ 356de57606cSSage Weil 357b0d7c223SYan, Zheng struct mutex i_truncate_mutex; 358de57606cSSage Weil u32 i_truncate_seq; /* last truncate to smaller size */ 359de57606cSSage Weil u64 i_truncate_size; /* and the size we last truncated down to */ 360de57606cSSage Weil int i_truncate_pending; /* still need to call vmtruncate */ 361de57606cSSage Weil 362de57606cSSage Weil u64 i_max_size; /* max file size authorized by mds */ 363de57606cSSage Weil u64 i_reported_size; /* (max_)size reported to or requested of mds */ 364de57606cSSage Weil u64 i_wanted_max_size; /* offset we'd like to write too */ 365de57606cSSage Weil u64 i_requested_max_size; /* max_size we've requested */ 366de57606cSSage Weil 367de57606cSSage Weil /* held references to caps */ 368de57606cSSage Weil int i_pin_ref; 369d3d0720dSHenry C Chang int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref; 370de57606cSSage Weil int i_wrbuffer_ref, i_wrbuffer_ref_head; 37189aa5930SYan, Zheng atomic_t i_filelock_ref; 37297aeb6bfSYan, Zheng atomic_t i_shared_gen; /* increment each time we get FILE_SHARED */ 373cd045cb4SSage Weil u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ 374de57606cSSage Weil u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ 375de57606cSSage Weil 376de57606cSSage Weil struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ 37768cd5b4bSYan, Zheng struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ 378de57606cSSage Weil spinlock_t i_unsafe_lock; 379de57606cSSage Weil 38075c9627eSYan, Zheng union { 381de57606cSSage Weil struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ 38275c9627eSYan, Zheng struct ceph_snapid_map *i_snapid_map; /* snapid -> dev_t */ 38375c9627eSYan, Zheng }; 384de57606cSSage Weil int i_snap_realm_counter; /* snap realm (if caps) */ 385de57606cSSage Weil struct list_head i_snap_realm_item; 386de57606cSSage Weil struct list_head i_snap_flush_item; 387de57606cSSage Weil 388*1cf89a8dSYan, Zheng struct work_struct i_work; 389*1cf89a8dSYan, Zheng unsigned long i_work_mask; 390de57606cSSage Weil 39199ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 39299ccbd22SMilosz Tanski struct fscache_cookie *fscache; 393f7f7e7a0SYan, Zheng u32 i_fscache_gen; 39499ccbd22SMilosz Tanski #endif 395de57606cSSage Weil struct inode vfs_inode; /* at end */ 396de57606cSSage Weil }; 397de57606cSSage Weil 398de57606cSSage Weil static inline struct ceph_inode_info *ceph_inode(struct inode *inode) 399de57606cSSage Weil { 400fbbccec9SNoah Watkins return container_of(inode, struct ceph_inode_info, vfs_inode); 401de57606cSSage Weil } 402de57606cSSage Weil 403ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode) 404ad1fee96SYehuda Sadeh { 405ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)inode->i_sb->s_fs_info; 406ad1fee96SYehuda Sadeh } 407ad1fee96SYehuda Sadeh 408ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb) 409ad1fee96SYehuda Sadeh { 410ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)sb->s_fs_info; 411ad1fee96SYehuda Sadeh } 412ad1fee96SYehuda Sadeh 4133d14c5d2SYehuda Sadeh static inline struct ceph_vino ceph_vino(struct inode *inode) 4143d14c5d2SYehuda Sadeh { 4153d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino; 4163d14c5d2SYehuda Sadeh } 4173d14c5d2SYehuda Sadeh 4183d14c5d2SYehuda Sadeh /* 4193d14c5d2SYehuda Sadeh * ino_t is <64 bits on many architectures, blech. 4203d14c5d2SYehuda Sadeh * 421ad1fee96SYehuda Sadeh * i_ino (kernel inode) st_ino (userspace) 422ad1fee96SYehuda Sadeh * i386 32 32 423ad1fee96SYehuda Sadeh * x86_64+ino32 64 32 424ad1fee96SYehuda Sadeh * x86_64 64 64 425ad1fee96SYehuda Sadeh */ 4263310f754SAmon Ott static inline u32 ceph_ino_to_ino32(__u64 vino) 427ad1fee96SYehuda Sadeh { 4283310f754SAmon Ott u32 ino = vino & 0xffffffff; 4293310f754SAmon Ott ino ^= vino >> 32; 430ad1fee96SYehuda Sadeh if (!ino) 431a661fc56SAmon Ott ino = 2; 432ad1fee96SYehuda Sadeh return ino; 433ad1fee96SYehuda Sadeh } 434ad1fee96SYehuda Sadeh 435ad1fee96SYehuda Sadeh /* 436ad1fee96SYehuda Sadeh * kernel i_ino value 4373d14c5d2SYehuda Sadeh */ 4383d14c5d2SYehuda Sadeh static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) 4393d14c5d2SYehuda Sadeh { 4403d14c5d2SYehuda Sadeh #if BITS_PER_LONG == 32 4413310f754SAmon Ott return ceph_ino_to_ino32(vino.ino); 4423310f754SAmon Ott #else 4433310f754SAmon Ott return (ino_t)vino.ino; 4443d14c5d2SYehuda Sadeh #endif 4453d14c5d2SYehuda Sadeh } 4463d14c5d2SYehuda Sadeh 447ad1fee96SYehuda Sadeh /* 448ad1fee96SYehuda Sadeh * user-visible ino (stat, filldir) 449ad1fee96SYehuda Sadeh */ 450ad1fee96SYehuda Sadeh #if BITS_PER_LONG == 32 451ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 452ad1fee96SYehuda Sadeh { 453ad1fee96SYehuda Sadeh return ino; 454ad1fee96SYehuda Sadeh } 455ad1fee96SYehuda Sadeh #else 456ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 457ad1fee96SYehuda Sadeh { 458ad1fee96SYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32)) 459ad1fee96SYehuda Sadeh ino = ceph_ino_to_ino32(ino); 460ad1fee96SYehuda Sadeh return ino; 461ad1fee96SYehuda Sadeh } 462ad1fee96SYehuda Sadeh #endif 463ad1fee96SYehuda Sadeh 464ad1fee96SYehuda Sadeh 4653d14c5d2SYehuda Sadeh /* for printf-style formatting */ 4663d14c5d2SYehuda Sadeh #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap 4673d14c5d2SYehuda Sadeh 4683d14c5d2SYehuda Sadeh static inline u64 ceph_ino(struct inode *inode) 4693d14c5d2SYehuda Sadeh { 4703d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.ino; 4713d14c5d2SYehuda Sadeh } 4723d14c5d2SYehuda Sadeh static inline u64 ceph_snap(struct inode *inode) 4733d14c5d2SYehuda Sadeh { 4743d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.snap; 4753d14c5d2SYehuda Sadeh } 4763d14c5d2SYehuda Sadeh 4773d14c5d2SYehuda Sadeh static inline int ceph_ino_compare(struct inode *inode, void *data) 4783d14c5d2SYehuda Sadeh { 4793d14c5d2SYehuda Sadeh struct ceph_vino *pvino = (struct ceph_vino *)data; 4803d14c5d2SYehuda Sadeh struct ceph_inode_info *ci = ceph_inode(inode); 4813d14c5d2SYehuda Sadeh return ci->i_vino.ino == pvino->ino && 4823d14c5d2SYehuda Sadeh ci->i_vino.snap == pvino->snap; 4833d14c5d2SYehuda Sadeh } 4843d14c5d2SYehuda Sadeh 4853d14c5d2SYehuda Sadeh static inline struct inode *ceph_find_inode(struct super_block *sb, 4863d14c5d2SYehuda Sadeh struct ceph_vino vino) 4873d14c5d2SYehuda Sadeh { 4883d14c5d2SYehuda Sadeh ino_t t = ceph_vino_to_ino(vino); 4893d14c5d2SYehuda Sadeh return ilookup5(sb, t, ceph_ino_compare, &vino); 4903d14c5d2SYehuda Sadeh } 4913d14c5d2SYehuda Sadeh 4923d14c5d2SYehuda Sadeh 4933d14c5d2SYehuda Sadeh /* 4943d14c5d2SYehuda Sadeh * Ceph inode. 4953d14c5d2SYehuda Sadeh */ 49610183a69SYan, Zheng #define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ 49710183a69SYan, Zheng #define CEPH_I_NODELAY (1 << 1) /* do not delay cap release */ 49810183a69SYan, Zheng #define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ 49910183a69SYan, Zheng #define CEPH_I_NOFLUSH (1 << 3) /* do not flush dirty caps */ 50010183a69SYan, Zheng #define CEPH_I_POOL_PERM (1 << 4) /* pool rd/wr bits are valid */ 50110183a69SYan, Zheng #define CEPH_I_POOL_RD (1 << 5) /* can read from pool */ 50210183a69SYan, Zheng #define CEPH_I_POOL_WR (1 << 6) /* can write to pool */ 503315f2408SYan, Zheng #define CEPH_I_SEC_INITED (1 << 7) /* security initialized */ 50477310320SYan, Zheng #define CEPH_I_CAP_DROPPED (1 << 8) /* caps were forcibly dropped */ 50513c2b57dSYan, Zheng #define CEPH_I_KICK_FLUSH (1 << 9) /* kick flushing caps */ 50670220ac8SYan, Zheng #define CEPH_I_FLUSH_SNAPS (1 << 10) /* need flush snapss */ 50726544c62SJeff Layton #define CEPH_I_ERROR_WRITE (1 << 11) /* have seen write errors */ 508b3f8d68fSYan, Zheng #define CEPH_I_ERROR_FILELOCK (1 << 12) /* have seen file lock errors */ 509b3f8d68fSYan, Zheng 51026544c62SJeff Layton 51126544c62SJeff Layton /* 512*1cf89a8dSYan, Zheng * Masks of ceph inode work. 513*1cf89a8dSYan, Zheng */ 514*1cf89a8dSYan, Zheng #define CEPH_I_WORK_WRITEBACK 0 /* writeback */ 515*1cf89a8dSYan, Zheng #define CEPH_I_WORK_INVALIDATE_PAGES 1 /* invalidate pages */ 516*1cf89a8dSYan, Zheng #define CEPH_I_WORK_VMTRUNCATE 2 /* vmtruncate */ 517*1cf89a8dSYan, Zheng 518*1cf89a8dSYan, Zheng /* 51926544c62SJeff Layton * We set the ERROR_WRITE bit when we start seeing write errors on an inode 52026544c62SJeff Layton * and then clear it when they start succeeding. Note that we do a lockless 52126544c62SJeff Layton * check first, and only take the lock if it looks like it needs to be changed. 52226544c62SJeff Layton * The write submission code just takes this as a hint, so we're not too 52326544c62SJeff Layton * worried if a few slip through in either direction. 52426544c62SJeff Layton */ 52526544c62SJeff Layton static inline void ceph_set_error_write(struct ceph_inode_info *ci) 52626544c62SJeff Layton { 52726544c62SJeff Layton if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE)) { 52826544c62SJeff Layton spin_lock(&ci->i_ceph_lock); 52926544c62SJeff Layton ci->i_ceph_flags |= CEPH_I_ERROR_WRITE; 53026544c62SJeff Layton spin_unlock(&ci->i_ceph_lock); 53126544c62SJeff Layton } 53226544c62SJeff Layton } 53326544c62SJeff Layton 53426544c62SJeff Layton static inline void ceph_clear_error_write(struct ceph_inode_info *ci) 53526544c62SJeff Layton { 53626544c62SJeff Layton if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE) { 53726544c62SJeff Layton spin_lock(&ci->i_ceph_lock); 53826544c62SJeff Layton ci->i_ceph_flags &= ~CEPH_I_ERROR_WRITE; 53926544c62SJeff Layton spin_unlock(&ci->i_ceph_lock); 54026544c62SJeff Layton } 54126544c62SJeff Layton } 5423d14c5d2SYehuda Sadeh 5432f276c51SYan, Zheng static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, 544fdd4e158SYan, Zheng long long release_count, 545fdd4e158SYan, Zheng long long ordered_count) 546de57606cSSage Weil { 547fdd4e158SYan, Zheng smp_mb__before_atomic(); 548fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], release_count); 549fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], ordered_count); 550de57606cSSage Weil } 551de57606cSSage Weil 5522f276c51SYan, Zheng static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) 553de57606cSSage Weil { 554fdd4e158SYan, Zheng atomic64_inc(&ci->i_release_count); 555fdd4e158SYan, Zheng } 556fdd4e158SYan, Zheng 557fdd4e158SYan, Zheng static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) 558fdd4e158SYan, Zheng { 559fdd4e158SYan, Zheng atomic64_inc(&ci->i_ordered_count); 560de57606cSSage Weil } 561de57606cSSage Weil 5622f276c51SYan, Zheng static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) 563de57606cSSage Weil { 564fdd4e158SYan, Zheng return atomic64_read(&ci->i_complete_seq[0]) == 565fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count); 5662f276c51SYan, Zheng } 567de57606cSSage Weil 56870db4f36SYan, Zheng static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) 56970db4f36SYan, Zheng { 570fdd4e158SYan, Zheng return atomic64_read(&ci->i_complete_seq[0]) == 571fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count) && 572fdd4e158SYan, Zheng atomic64_read(&ci->i_complete_seq[1]) == 573fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count); 57470db4f36SYan, Zheng } 57570db4f36SYan, Zheng 5762f276c51SYan, Zheng static inline void ceph_dir_clear_complete(struct inode *inode) 5772f276c51SYan, Zheng { 5782f276c51SYan, Zheng __ceph_dir_clear_complete(ceph_inode(inode)); 5792f276c51SYan, Zheng } 5802f276c51SYan, Zheng 58170db4f36SYan, Zheng static inline void ceph_dir_clear_ordered(struct inode *inode) 5822f276c51SYan, Zheng { 583fdd4e158SYan, Zheng __ceph_dir_clear_ordered(ceph_inode(inode)); 584de57606cSSage Weil } 585de57606cSSage Weil 58670db4f36SYan, Zheng static inline bool ceph_dir_is_complete_ordered(struct inode *inode) 58770db4f36SYan, Zheng { 588fdd4e158SYan, Zheng bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode)); 589fdd4e158SYan, Zheng smp_rmb(); 59070db4f36SYan, Zheng return ret; 59170db4f36SYan, Zheng } 592de57606cSSage Weil 593de57606cSSage Weil /* find a specific frag @f */ 594de57606cSSage Weil extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, 595de57606cSSage Weil u32 f); 596de57606cSSage Weil 597de57606cSSage Weil /* 598de57606cSSage Weil * choose fragment for value @v. copy frag content to pfrag, if leaf 599de57606cSSage Weil * exists 600de57606cSSage Weil */ 601de57606cSSage Weil extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 602de57606cSSage Weil struct ceph_inode_frag *pfrag, 603de57606cSSage Weil int *found); 604de57606cSSage Weil 6051e9c2eb6SYan, Zheng static inline struct ceph_dentry_info *ceph_dentry(const struct dentry *dentry) 606de57606cSSage Weil { 607de57606cSSage Weil return (struct ceph_dentry_info *)dentry->d_fsdata; 608de57606cSSage Weil } 609de57606cSSage Weil 610de57606cSSage Weil /* 611de57606cSSage Weil * caps helpers 612de57606cSSage Weil */ 613de57606cSSage Weil static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) 614de57606cSSage Weil { 615de57606cSSage Weil return !RB_EMPTY_ROOT(&ci->i_caps); 616de57606cSSage Weil } 617de57606cSSage Weil 618de57606cSSage Weil extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); 619de57606cSSage Weil extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); 620de57606cSSage Weil extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, 621de57606cSSage Weil struct ceph_cap *cap); 622de57606cSSage Weil 623de57606cSSage Weil static inline int ceph_caps_issued(struct ceph_inode_info *ci) 624de57606cSSage Weil { 625de57606cSSage Weil int issued; 626be655596SSage Weil spin_lock(&ci->i_ceph_lock); 627de57606cSSage Weil issued = __ceph_caps_issued(ci, NULL); 628be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 629de57606cSSage Weil return issued; 630de57606cSSage Weil } 631de57606cSSage Weil 632de57606cSSage Weil static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, 633de57606cSSage Weil int touch) 634de57606cSSage Weil { 635de57606cSSage Weil int r; 636be655596SSage Weil spin_lock(&ci->i_ceph_lock); 637de57606cSSage Weil r = __ceph_caps_issued_mask(ci, mask, touch); 638be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 639de57606cSSage Weil return r; 640de57606cSSage Weil } 641de57606cSSage Weil 642de57606cSSage Weil static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) 643de57606cSSage Weil { 644de57606cSSage Weil return ci->i_dirty_caps | ci->i_flushing_caps; 645de57606cSSage Weil } 646f66fd9f0SYan, Zheng extern struct ceph_cap_flush *ceph_alloc_cap_flush(void); 647f66fd9f0SYan, Zheng extern void ceph_free_cap_flush(struct ceph_cap_flush *cf); 648f66fd9f0SYan, Zheng extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, 649f66fd9f0SYan, Zheng struct ceph_cap_flush **pcf); 650de57606cSSage Weil 6519563f88cSYan, Zheng extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, 6529563f88cSYan, Zheng struct ceph_cap *ocap, int mask); 653de57606cSSage Weil extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); 654de57606cSSage Weil extern int __ceph_caps_used(struct ceph_inode_info *ci); 655de57606cSSage Weil 656de57606cSSage Weil extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); 657de57606cSSage Weil 658de57606cSSage Weil /* 659de57606cSSage Weil * wanted, by virtue of open file modes AND cap refs (buffered/cached data) 660de57606cSSage Weil */ 661de57606cSSage Weil static inline int __ceph_caps_wanted(struct ceph_inode_info *ci) 662de57606cSSage Weil { 663de57606cSSage Weil int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci); 664de57606cSSage Weil if (w & CEPH_CAP_FILE_BUFFER) 665de57606cSSage Weil w |= CEPH_CAP_FILE_EXCL; /* we want EXCL if dirty data */ 666de57606cSSage Weil return w; 667de57606cSSage Weil } 668de57606cSSage Weil 669de57606cSSage Weil /* what the mds thinks we want */ 670c1944fedSYan, Zheng extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check); 671de57606cSSage Weil 67237151668SYehuda Sadeh extern void ceph_caps_init(struct ceph_mds_client *mdsc); 67337151668SYehuda Sadeh extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); 674fe33032dSYan, Zheng extern void ceph_adjust_caps_max_min(struct ceph_mds_client *mdsc, 675fe33032dSYan, Zheng struct ceph_mount_options *fsopt); 676e30ee581SZhi Zhang extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, 67737151668SYehuda Sadeh struct ceph_cap_reservation *ctx, int need); 6787bf8f736SChengguang Xu extern void ceph_unreserve_caps(struct ceph_mds_client *mdsc, 67937151668SYehuda Sadeh struct ceph_cap_reservation *ctx); 6803d14c5d2SYehuda Sadeh extern void ceph_reservation_status(struct ceph_fs_client *client, 681de57606cSSage Weil int *total, int *avail, int *used, 68285ccce43SSage Weil int *reserved, int *min); 683de57606cSSage Weil 684de57606cSSage Weil 685de57606cSSage Weil 686de57606cSSage Weil /* 687de57606cSSage Weil * we keep buffered readdir results attached to file->private_data 688de57606cSSage Weil */ 6894918b6d1SSage Weil #define CEPH_F_SYNC 1 6909cfa1098SSage Weil #define CEPH_F_ATEND 2 6914918b6d1SSage Weil 692de57606cSSage Weil struct ceph_file_info { 693252c6728SSage Weil short fmode; /* initialized on open */ 694252c6728SSage Weil short flags; /* CEPH_F_* */ 695de57606cSSage Weil 6965d988308SYan, Zheng spinlock_t rw_contexts_lock; 6975d988308SYan, Zheng struct list_head rw_contexts; 698bb48bd4dSChengguang Xu }; 699bb48bd4dSChengguang Xu 700bb48bd4dSChengguang Xu struct ceph_dir_file_info { 701bb48bd4dSChengguang Xu struct ceph_file_info file_info; 7025d988308SYan, Zheng 703de57606cSSage Weil /* readdir: position within the dir */ 704de57606cSSage Weil u32 frag; 705de57606cSSage Weil struct ceph_mds_request *last_readdir; 706de57606cSSage Weil 707de57606cSSage Weil /* readdir: position within a frag */ 708f0494206SYan, Zheng unsigned next_offset; /* offset of next chunk (last_name's + 1) */ 709de57606cSSage Weil char *last_name; /* last entry in previous chunk */ 710fdd4e158SYan, Zheng long long dir_release_count; 711fdd4e158SYan, Zheng long long dir_ordered_count; 712fdd4e158SYan, Zheng int readdir_cache_idx; 713de57606cSSage Weil 714de57606cSSage Weil /* used for -o dirstat read() on directory thing */ 715de57606cSSage Weil char *dir_info; 716de57606cSSage Weil int dir_info_len; 717de57606cSSage Weil }; 718de57606cSSage Weil 7195d988308SYan, Zheng struct ceph_rw_context { 7205d988308SYan, Zheng struct list_head list; 7215d988308SYan, Zheng struct task_struct *thread; 7225d988308SYan, Zheng int caps; 7235d988308SYan, Zheng }; 7245d988308SYan, Zheng 7255d988308SYan, Zheng #define CEPH_DEFINE_RW_CONTEXT(_name, _caps) \ 7265d988308SYan, Zheng struct ceph_rw_context _name = { \ 7275d988308SYan, Zheng .thread = current, \ 7285d988308SYan, Zheng .caps = _caps, \ 7295d988308SYan, Zheng } 7305d988308SYan, Zheng 7315d988308SYan, Zheng static inline void ceph_add_rw_context(struct ceph_file_info *cf, 7325d988308SYan, Zheng struct ceph_rw_context *ctx) 7335d988308SYan, Zheng { 7345d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7355d988308SYan, Zheng list_add(&ctx->list, &cf->rw_contexts); 7365d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7375d988308SYan, Zheng } 7385d988308SYan, Zheng 7395d988308SYan, Zheng static inline void ceph_del_rw_context(struct ceph_file_info *cf, 7405d988308SYan, Zheng struct ceph_rw_context *ctx) 7415d988308SYan, Zheng { 7425d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7435d988308SYan, Zheng list_del(&ctx->list); 7445d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7455d988308SYan, Zheng } 7465d988308SYan, Zheng 7475d988308SYan, Zheng static inline struct ceph_rw_context* 7485d988308SYan, Zheng ceph_find_rw_context(struct ceph_file_info *cf) 7495d988308SYan, Zheng { 7505d988308SYan, Zheng struct ceph_rw_context *ctx, *found = NULL; 7515d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7525d988308SYan, Zheng list_for_each_entry(ctx, &cf->rw_contexts, list) { 7535d988308SYan, Zheng if (ctx->thread == current) { 7545d988308SYan, Zheng found = ctx; 7555d988308SYan, Zheng break; 7565d988308SYan, Zheng } 7575d988308SYan, Zheng } 7585d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7595d988308SYan, Zheng return found; 7605d988308SYan, Zheng } 7615d988308SYan, Zheng 762fdd4e158SYan, Zheng struct ceph_readdir_cache_control { 763fdd4e158SYan, Zheng struct page *page; 764fdd4e158SYan, Zheng struct dentry **dentries; 765fdd4e158SYan, Zheng int index; 766fdd4e158SYan, Zheng }; 767de57606cSSage Weil 768de57606cSSage Weil /* 769de57606cSSage Weil * A "snap realm" describes a subset of the file hierarchy sharing 770de57606cSSage Weil * the same set of snapshots that apply to it. The realms themselves 771de57606cSSage Weil * are organized into a hierarchy, such that children inherit (some of) 772de57606cSSage Weil * the snapshots of their parents. 773de57606cSSage Weil * 774de57606cSSage Weil * All inodes within the realm that have capabilities are linked into a 775de57606cSSage Weil * per-realm list. 776de57606cSSage Weil */ 777de57606cSSage Weil struct ceph_snap_realm { 778de57606cSSage Weil u64 ino; 779e3161f17SLuis Henriques struct inode *inode; 780de57606cSSage Weil atomic_t nref; 781a105f00cSSage Weil struct rb_node node; 782a105f00cSSage Weil 783de57606cSSage Weil u64 created, seq; 784de57606cSSage Weil u64 parent_ino; 785de57606cSSage Weil u64 parent_since; /* snapid when our current parent became so */ 786de57606cSSage Weil 787de57606cSSage Weil u64 *prior_parent_snaps; /* snaps inherited from any parents we */ 788aa711ee3SAlex Elder u32 num_prior_parent_snaps; /* had prior to parent_since */ 789de57606cSSage Weil u64 *snaps; /* snaps specific to this realm */ 790aa711ee3SAlex Elder u32 num_snaps; 791de57606cSSage Weil 792de57606cSSage Weil struct ceph_snap_realm *parent; 793de57606cSSage Weil struct list_head children; /* list of child realms */ 794de57606cSSage Weil struct list_head child_item; 795de57606cSSage Weil 796de57606cSSage Weil struct list_head empty_item; /* if i have ref==0 */ 797de57606cSSage Weil 798ae00d4f3SSage Weil struct list_head dirty_item; /* if realm needs new context */ 799ae00d4f3SSage Weil 800de57606cSSage Weil /* the current set of snaps for this realm */ 801de57606cSSage Weil struct ceph_snap_context *cached_context; 802de57606cSSage Weil 803de57606cSSage Weil struct list_head inodes_with_caps; 804de57606cSSage Weil spinlock_t inodes_with_caps_lock; 805de57606cSSage Weil }; 806de57606cSSage Weil 8073d14c5d2SYehuda Sadeh static inline int default_congestion_kb(void) 8083d14c5d2SYehuda Sadeh { 8093d14c5d2SYehuda Sadeh int congestion_kb; 810de57606cSSage Weil 811de57606cSSage Weil /* 8123d14c5d2SYehuda Sadeh * Copied from NFS 8133d14c5d2SYehuda Sadeh * 8143d14c5d2SYehuda Sadeh * congestion size, scale with available memory. 8153d14c5d2SYehuda Sadeh * 8163d14c5d2SYehuda Sadeh * 64MB: 8192k 8173d14c5d2SYehuda Sadeh * 128MB: 11585k 8183d14c5d2SYehuda Sadeh * 256MB: 16384k 8193d14c5d2SYehuda Sadeh * 512MB: 23170k 8203d14c5d2SYehuda Sadeh * 1GB: 32768k 8213d14c5d2SYehuda Sadeh * 2GB: 46340k 8223d14c5d2SYehuda Sadeh * 4GB: 65536k 8233d14c5d2SYehuda Sadeh * 8GB: 92681k 8243d14c5d2SYehuda Sadeh * 16GB: 131072k 8253d14c5d2SYehuda Sadeh * 8263d14c5d2SYehuda Sadeh * This allows larger machines to have larger/more transfers. 8273d14c5d2SYehuda Sadeh * Limit the default to 256M 828de57606cSSage Weil */ 829ca79b0c2SArun KS congestion_kb = (16*int_sqrt(totalram_pages())) << (PAGE_SHIFT-10); 8303d14c5d2SYehuda Sadeh if (congestion_kb > 256*1024) 8313d14c5d2SYehuda Sadeh congestion_kb = 256*1024; 8323d14c5d2SYehuda Sadeh 8333d14c5d2SYehuda Sadeh return congestion_kb; 834de57606cSSage Weil } 835de57606cSSage Weil 836de57606cSSage Weil 837de57606cSSage Weil 838de57606cSSage Weil /* snap.c */ 839de57606cSSage Weil struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, 840de57606cSSage Weil u64 ino); 841de57606cSSage Weil extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, 842de57606cSSage Weil struct ceph_snap_realm *realm); 843de57606cSSage Weil extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, 844de57606cSSage Weil struct ceph_snap_realm *realm); 845de57606cSSage Weil extern int ceph_update_snap_trace(struct ceph_mds_client *m, 846982d6011SYan, Zheng void *p, void *e, bool deletion, 847982d6011SYan, Zheng struct ceph_snap_realm **realm_ret); 848de57606cSSage Weil extern void ceph_handle_snap(struct ceph_mds_client *mdsc, 8492600d2ddSSage Weil struct ceph_mds_session *session, 850de57606cSSage Weil struct ceph_msg *msg); 851fc837c8fSSage Weil extern void ceph_queue_cap_snap(struct ceph_inode_info *ci); 852de57606cSSage Weil extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, 853de57606cSSage Weil struct ceph_cap_snap *capsnap); 854de57606cSSage Weil extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); 855de57606cSSage Weil 85675c9627eSYan, Zheng extern struct ceph_snapid_map *ceph_get_snapid_map(struct ceph_mds_client *mdsc, 85775c9627eSYan, Zheng u64 snap); 85875c9627eSYan, Zheng extern void ceph_put_snapid_map(struct ceph_mds_client* mdsc, 85975c9627eSYan, Zheng struct ceph_snapid_map *sm); 86075c9627eSYan, Zheng extern void ceph_trim_snapid_map(struct ceph_mds_client *mdsc); 86175c9627eSYan, Zheng extern void ceph_cleanup_snapid_map(struct ceph_mds_client *mdsc); 86275c9627eSYan, Zheng 86375c9627eSYan, Zheng 864de57606cSSage Weil /* 865de57606cSSage Weil * a cap_snap is "pending" if it is still awaiting an in-progress 866de57606cSSage Weil * sync write (that may/may not still update size, mtime, etc.). 867de57606cSSage Weil */ 868de57606cSSage Weil static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) 869de57606cSSage Weil { 870de57606cSSage Weil return !list_empty(&ci->i_cap_snaps) && 87186056090SYan, Zheng list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap, 872de57606cSSage Weil ci_item)->writing; 873de57606cSSage Weil } 874de57606cSSage Weil 875de57606cSSage Weil /* inode.c */ 876de57606cSSage Weil extern const struct inode_operations ceph_file_iops; 877de57606cSSage Weil 878de57606cSSage Weil extern struct inode *ceph_alloc_inode(struct super_block *sb); 879de57606cSSage Weil extern void ceph_destroy_inode(struct inode *inode); 880cfa6d412SAl Viro extern void ceph_free_inode(struct inode *inode); 8819f12bd11SYan, Zheng extern int ceph_drop_inode(struct inode *inode); 882de57606cSSage Weil 883de57606cSSage Weil extern struct inode *ceph_get_inode(struct super_block *sb, 884de57606cSSage Weil struct ceph_vino vino); 885de57606cSSage Weil extern struct inode *ceph_get_snapdir(struct inode *parent); 886de57606cSSage Weil extern int ceph_fill_file_size(struct inode *inode, int issued, 887de57606cSSage Weil u32 truncate_seq, u64 truncate_size, u64 size); 888de57606cSSage Weil extern void ceph_fill_file_time(struct inode *inode, int issued, 8899bbeab41SArnd Bergmann u64 time_warp_seq, struct timespec64 *ctime, 8909bbeab41SArnd Bergmann struct timespec64 *mtime, 8919bbeab41SArnd Bergmann struct timespec64 *atime); 892de57606cSSage Weil extern int ceph_fill_trace(struct super_block *sb, 893f5a03b08SJeff Layton struct ceph_mds_request *req); 894de57606cSSage Weil extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, 895de57606cSSage Weil struct ceph_mds_session *session); 896de57606cSSage Weil 897de57606cSSage Weil extern int ceph_inode_holds_cap(struct inode *inode, int mask); 898de57606cSSage Weil 899efb0ca76SYan, Zheng extern bool ceph_inode_set_size(struct inode *inode, loff_t size); 900b415bf4fSYan, Zheng extern void __ceph_do_pending_vmtruncate(struct inode *inode); 9013c6f6b79SSage Weil extern void ceph_queue_vmtruncate(struct inode *inode); 9023c6f6b79SSage Weil 9033c6f6b79SSage Weil extern void ceph_queue_invalidate(struct inode *inode); 9043c6f6b79SSage Weil extern void ceph_queue_writeback(struct inode *inode); 905de57606cSSage Weil 90601deead0SYan, Zheng extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 90701deead0SYan, Zheng int mask, bool force); 90801deead0SYan, Zheng static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) 90901deead0SYan, Zheng { 91001deead0SYan, Zheng return __ceph_do_getattr(inode, NULL, mask, force); 91101deead0SYan, Zheng } 91210556cb2SAl Viro extern int ceph_permission(struct inode *inode, int mask); 913a26feccaSAndreas Gruenbacher extern int __ceph_setattr(struct inode *inode, struct iattr *attr); 914de57606cSSage Weil extern int ceph_setattr(struct dentry *dentry, struct iattr *attr); 915a528d35eSDavid Howells extern int ceph_getattr(const struct path *path, struct kstat *stat, 916a528d35eSDavid Howells u32 request_mask, unsigned int flags); 917de57606cSSage Weil 918de57606cSSage Weil /* xattr.c */ 919a26feccaSAndreas Gruenbacher int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); 9207221fe4cSGuangliang Zhao ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); 921de57606cSSage Weil extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); 922de57606cSSage Weil extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci); 923de57606cSSage Weil extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); 9243ce6cd12SAlex Elder extern void __init ceph_xattr_init(void); 9253ce6cd12SAlex Elder extern void ceph_xattr_exit(void); 926b1ee94aaSYan, Zheng extern const struct xattr_handler *ceph_xattr_handlers[]; 927de57606cSSage Weil 928315f2408SYan, Zheng #ifdef CONFIG_SECURITY 929315f2408SYan, Zheng extern bool ceph_security_xattr_deadlock(struct inode *in); 930315f2408SYan, Zheng extern bool ceph_security_xattr_wanted(struct inode *in); 931315f2408SYan, Zheng #else 932315f2408SYan, Zheng static inline bool ceph_security_xattr_deadlock(struct inode *in) 933315f2408SYan, Zheng { 934315f2408SYan, Zheng return false; 935315f2408SYan, Zheng } 936315f2408SYan, Zheng static inline bool ceph_security_xattr_wanted(struct inode *in) 937315f2408SYan, Zheng { 938315f2408SYan, Zheng return false; 939315f2408SYan, Zheng } 940315f2408SYan, Zheng #endif 941315f2408SYan, Zheng 9427221fe4cSGuangliang Zhao /* acl.c */ 943b1ee94aaSYan, Zheng struct ceph_acls_info { 944b1ee94aaSYan, Zheng void *default_acl; 945b1ee94aaSYan, Zheng void *acl; 946b1ee94aaSYan, Zheng struct ceph_pagelist *pagelist; 947b1ee94aaSYan, Zheng }; 9487221fe4cSGuangliang Zhao 9497221fe4cSGuangliang Zhao #ifdef CONFIG_CEPH_FS_POSIX_ACL 9507221fe4cSGuangliang Zhao 9517221fe4cSGuangliang Zhao struct posix_acl *ceph_get_acl(struct inode *, int); 95272466d0bSSage Weil int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type); 953b1ee94aaSYan, Zheng int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 954b1ee94aaSYan, Zheng struct ceph_acls_info *info); 955b1ee94aaSYan, Zheng void ceph_init_inode_acls(struct inode *inode, struct ceph_acls_info *info); 956b1ee94aaSYan, Zheng void ceph_release_acls_info(struct ceph_acls_info *info); 957c969d9bfSGuangliang Zhao 958c969d9bfSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 959c969d9bfSGuangliang Zhao { 960c969d9bfSGuangliang Zhao forget_all_cached_acls(inode); 961c969d9bfSGuangliang Zhao } 9627221fe4cSGuangliang Zhao 9637221fe4cSGuangliang Zhao #else 9647221fe4cSGuangliang Zhao 9657221fe4cSGuangliang Zhao #define ceph_get_acl NULL 96672466d0bSSage Weil #define ceph_set_acl NULL 9677221fe4cSGuangliang Zhao 968b1ee94aaSYan, Zheng static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 969b1ee94aaSYan, Zheng struct ceph_acls_info *info) 9707221fe4cSGuangliang Zhao { 9717221fe4cSGuangliang Zhao return 0; 9727221fe4cSGuangliang Zhao } 973b1ee94aaSYan, Zheng static inline void ceph_init_inode_acls(struct inode *inode, 974b1ee94aaSYan, Zheng struct ceph_acls_info *info) 975b1ee94aaSYan, Zheng { 976b1ee94aaSYan, Zheng } 977b1ee94aaSYan, Zheng static inline void ceph_release_acls_info(struct ceph_acls_info *info) 978b1ee94aaSYan, Zheng { 979b1ee94aaSYan, Zheng } 9807221fe4cSGuangliang Zhao static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) 9817221fe4cSGuangliang Zhao { 9827221fe4cSGuangliang Zhao return 0; 9837221fe4cSGuangliang Zhao } 9847221fe4cSGuangliang Zhao 9857221fe4cSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 9867221fe4cSGuangliang Zhao { 9877221fe4cSGuangliang Zhao } 9887221fe4cSGuangliang Zhao 9897221fe4cSGuangliang Zhao #endif 9907221fe4cSGuangliang Zhao 991de57606cSSage Weil /* caps.c */ 992de57606cSSage Weil extern const char *ceph_cap_string(int c); 993de57606cSSage Weil extern void ceph_handle_caps(struct ceph_mds_session *session, 994de57606cSSage Weil struct ceph_msg *msg); 995d9df2783SYan, Zheng extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, 996d9df2783SYan, Zheng struct ceph_cap_reservation *ctx); 997d9df2783SYan, Zheng extern void ceph_add_cap(struct inode *inode, 998de57606cSSage Weil struct ceph_mds_session *session, u64 cap_id, 999de57606cSSage Weil int fmode, unsigned issued, unsigned wanted, 1000de57606cSSage Weil unsigned cap, unsigned seq, u64 realmino, int flags, 1001d9df2783SYan, Zheng struct ceph_cap **new_cap); 1002a096b09aSYan, Zheng extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); 1003e3ec8d68SYan, Zheng extern void __ceph_remove_caps(struct inode* inode); 100437151668SYehuda Sadeh extern void ceph_put_cap(struct ceph_mds_client *mdsc, 100537151668SYehuda Sadeh struct ceph_cap *cap); 10069215aeeaSYan, Zheng extern int ceph_is_any_caps(struct inode *inode); 1007de57606cSSage Weil 1008f1a3d572SStephen Rothwell extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); 100902c24a82SJosef Bacik extern int ceph_fsync(struct file *file, loff_t start, loff_t end, 101002c24a82SJosef Bacik int datasync); 1011e548e9b9SYan, Zheng extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, 1012e548e9b9SYan, Zheng struct ceph_mds_session *session); 1013de57606cSSage Weil extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, 1014de57606cSSage Weil struct ceph_mds_session *session); 10152bc50259SGreg Farnum extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, 10162bc50259SGreg Farnum int mds); 1017de57606cSSage Weil extern int ceph_get_cap_mds(struct inode *inode); 1018de57606cSSage Weil extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); 1019de57606cSSage Weil extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); 1020de57606cSSage Weil extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, 1021de57606cSSage Weil struct ceph_snap_context *snapc); 1022ed9b430cSYan, Zheng extern void ceph_flush_snaps(struct ceph_inode_info *ci, 10230e294387SYan, Zheng struct ceph_mds_session **psession); 1024efb0ca76SYan, Zheng extern bool __ceph_should_report_size(struct ceph_inode_info *ci); 1025de57606cSSage Weil extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, 1026de57606cSSage Weil struct ceph_mds_session *session); 1027afcdaea3SSage Weil extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc); 1028afcdaea3SSage Weil extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); 10296ef0bc6dSZhi Zhang extern int ceph_drop_caps_for_unlink(struct inode *inode); 1030de57606cSSage Weil extern int ceph_encode_inode_release(void **p, struct inode *inode, 1031de57606cSSage Weil int mds, int drop, int unless, int force); 1032de57606cSSage Weil extern int ceph_encode_dentry_release(void **p, struct dentry *dn, 1033ca6c8ae0SJeff Layton struct inode *dir, 1034de57606cSSage Weil int mds, int drop, int unless); 1035de57606cSSage Weil 1036de57606cSSage Weil extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, 103731c542a1SYan, Zheng loff_t endoff, int *got, struct page **pinned_page); 10382b1ac852SYan, Zheng extern int ceph_try_get_caps(struct ceph_inode_info *ci, 10392ee9dd95SLuis Henriques int need, int want, bool nonblock, int *got); 1040de57606cSSage Weil 1041de57606cSSage Weil /* for counting open files by mode */ 1042774a6a11SYan, Zheng extern void __ceph_get_fmode(struct ceph_inode_info *ci, int mode); 1043de57606cSSage Weil extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode); 1044de57606cSSage Weil 1045de57606cSSage Weil /* addr.c */ 1046de57606cSSage Weil extern const struct address_space_operations ceph_aops; 1047de57606cSSage Weil extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); 104810183a69SYan, Zheng extern int ceph_uninline_data(struct file *filp, struct page *locked_page); 104910183a69SYan, Zheng extern int ceph_pool_perm_check(struct ceph_inode_info *ci, int need); 105010183a69SYan, Zheng extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); 1051de57606cSSage Weil 1052de57606cSSage Weil /* file.c */ 1053de57606cSSage Weil extern const struct file_operations ceph_file_fops; 10549e0eb85dSAlex Elder 105577310320SYan, Zheng extern int ceph_renew_caps(struct inode *inode); 1056de57606cSSage Weil extern int ceph_open(struct inode *inode, struct file *file); 10575ef50c3bSSage Weil extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, 105844907d79SAl Viro struct file *file, unsigned flags, umode_t mode); 1059de57606cSSage Weil extern int ceph_release(struct inode *inode, struct file *filp); 106031c542a1SYan, Zheng extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, 106131c542a1SYan, Zheng char *data, size_t len); 106255f2a045SIlya Dryomov 1063de57606cSSage Weil /* dir.c */ 1064de57606cSSage Weil extern const struct file_operations ceph_dir_fops; 106538c48b5fSYan, Zheng extern const struct file_operations ceph_snapdir_fops; 1066de57606cSSage Weil extern const struct inode_operations ceph_dir_iops; 106738c48b5fSYan, Zheng extern const struct inode_operations ceph_snapdir_iops; 106818fc8abdSAl Viro extern const struct dentry_operations ceph_dentry_ops; 1069de57606cSSage Weil 1070f3c4ebe6SYan, Zheng extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order); 1071de57606cSSage Weil extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); 1072468640e3SSage Weil extern int ceph_handle_snapdir(struct ceph_mds_request *req, 1073468640e3SSage Weil struct dentry *dentry, int err); 1074de57606cSSage Weil extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, 1075de57606cSSage Weil struct dentry *dentry, int err); 1076de57606cSSage Weil 107737c4efc1SYan, Zheng extern void __ceph_dentry_lease_touch(struct ceph_dentry_info *di); 107837c4efc1SYan, Zheng extern void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di); 107981a6cf2dSSage Weil extern void ceph_invalidate_dentry_lease(struct dentry *dentry); 108037c4efc1SYan, Zheng extern int ceph_trim_dentries(struct ceph_mds_client *mdsc); 1081e5f86dc3SSage Weil extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); 1082fdd4e158SYan, Zheng extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl); 1083de57606cSSage Weil 1084de57606cSSage Weil /* ioctl.c */ 1085de57606cSSage Weil extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 1086de57606cSSage Weil 1087de57606cSSage Weil /* export.c */ 1088de57606cSSage Weil extern const struct export_operations ceph_export_ops; 10893886274aSLuis Henriques struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino); 1090de57606cSSage Weil 109140819f6fSGreg Farnum /* locks.c */ 1092eb13e832SYan, Zheng extern __init void ceph_flock_init(void); 109340819f6fSGreg Farnum extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); 109440819f6fSGreg Farnum extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); 109540819f6fSGreg Farnum extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); 109639be95e9SJim Schutt extern int ceph_encode_locks_to_buffer(struct inode *inode, 109739be95e9SJim Schutt struct ceph_filelock *flocks, 109839be95e9SJim Schutt int num_fcntl_locks, 109939be95e9SJim Schutt int num_flock_locks); 110039be95e9SJim Schutt extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, 110139be95e9SJim Schutt struct ceph_pagelist *pagelist, 110239be95e9SJim Schutt int num_fcntl_locks, int num_flock_locks); 110340819f6fSGreg Farnum 11043d14c5d2SYehuda Sadeh /* debugfs.c */ 11053d14c5d2SYehuda Sadeh extern int ceph_fs_debugfs_init(struct ceph_fs_client *client); 11063d14c5d2SYehuda Sadeh extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); 11073d14c5d2SYehuda Sadeh 1108fb18a575SLuis Henriques /* quota.c */ 1109d557c48dSLuis Henriques static inline bool __ceph_has_any_quota(struct ceph_inode_info *ci) 1110d557c48dSLuis Henriques { 1111d557c48dSLuis Henriques return ci->i_max_files || ci->i_max_bytes; 1112d557c48dSLuis Henriques } 1113d557c48dSLuis Henriques 1114d557c48dSLuis Henriques extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc); 1115d557c48dSLuis Henriques 1116d557c48dSLuis Henriques static inline void __ceph_update_quota(struct ceph_inode_info *ci, 1117d557c48dSLuis Henriques u64 max_bytes, u64 max_files) 1118d557c48dSLuis Henriques { 1119d557c48dSLuis Henriques bool had_quota, has_quota; 1120d557c48dSLuis Henriques had_quota = __ceph_has_any_quota(ci); 1121d557c48dSLuis Henriques ci->i_max_bytes = max_bytes; 1122d557c48dSLuis Henriques ci->i_max_files = max_files; 1123d557c48dSLuis Henriques has_quota = __ceph_has_any_quota(ci); 1124d557c48dSLuis Henriques 1125d557c48dSLuis Henriques if (had_quota != has_quota) 1126d557c48dSLuis Henriques ceph_adjust_quota_realms_count(&ci->vfs_inode, has_quota); 1127d557c48dSLuis Henriques } 1128d557c48dSLuis Henriques 1129fb18a575SLuis Henriques extern void ceph_handle_quota(struct ceph_mds_client *mdsc, 1130fb18a575SLuis Henriques struct ceph_mds_session *session, 1131fb18a575SLuis Henriques struct ceph_msg *msg); 1132b7a29217SLuis Henriques extern bool ceph_quota_is_max_files_exceeded(struct inode *inode); 1133cafe21a4SLuis Henriques extern bool ceph_quota_is_same_realm(struct inode *old, struct inode *new); 11342b83845fSLuis Henriques extern bool ceph_quota_is_max_bytes_exceeded(struct inode *inode, 11352b83845fSLuis Henriques loff_t newlen); 11361ab302a0SLuis Henriques extern bool ceph_quota_is_max_bytes_approaching(struct inode *inode, 11371ab302a0SLuis Henriques loff_t newlen); 11389122eed5SLuis Henriques extern bool ceph_quota_update_statfs(struct ceph_fs_client *fsc, 11399122eed5SLuis Henriques struct kstatfs *buf); 11400c44a8e0SLuis Henriques extern void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc); 1141fb18a575SLuis Henriques 1142de57606cSSage Weil #endif /* _FS_CEPH_SUPER_H */ 1143