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 1121cf89a8dSYan, 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; 200176c77c9SJeff Layton u64 change_attr; 201ec62b894SJeff Layton struct timespec64 mtime, atime, ctime, btime; 202de57606cSSage Weil u64 time_warp_seq; 2035f743e45SYan, Zheng u64 truncate_size; 2045f743e45SYan, Zheng u32 truncate_seq; 205de57606cSSage Weil int writing; /* a sync write is still in progress */ 206de57606cSSage Weil int dirty_pages; /* dirty pages awaiting writeback */ 207e20d258dSYan, Zheng bool inline_data; 20886056090SYan, Zheng bool need_flush; 209de57606cSSage Weil }; 210de57606cSSage Weil 211de57606cSSage Weil static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) 212de57606cSSage Weil { 213805692d0SElena Reshetova if (refcount_dec_and_test(&capsnap->nref)) { 2144a625be4SSage Weil if (capsnap->xattr_blob) 2154a625be4SSage Weil ceph_buffer_put(capsnap->xattr_blob); 216de57606cSSage Weil kfree(capsnap); 217de57606cSSage Weil } 2184a625be4SSage Weil } 219de57606cSSage Weil 220de57606cSSage Weil /* 221de57606cSSage Weil * The frag tree describes how a directory is fragmented, potentially across 222de57606cSSage Weil * multiple metadata servers. It is also used to indicate points where 223de57606cSSage Weil * metadata authority is delegated, and whether/where metadata is replicated. 224de57606cSSage Weil * 225de57606cSSage Weil * A _leaf_ frag will be present in the i_fragtree IFF there is 226de57606cSSage Weil * delegation info. That is, if mds >= 0 || ndist > 0. 227de57606cSSage Weil */ 228de57606cSSage Weil #define CEPH_MAX_DIRFRAG_REP 4 229de57606cSSage Weil 230de57606cSSage Weil struct ceph_inode_frag { 231de57606cSSage Weil struct rb_node node; 232de57606cSSage Weil 233de57606cSSage Weil /* fragtree state */ 234de57606cSSage Weil u32 frag; 235de57606cSSage Weil int split_by; /* i.e. 2^(split_by) children */ 236de57606cSSage Weil 237de57606cSSage Weil /* delegation and replication info */ 238de57606cSSage Weil int mds; /* -1 if same authority as parent */ 239de57606cSSage Weil int ndist; /* >0 if replicated */ 240de57606cSSage Weil int dist[CEPH_MAX_DIRFRAG_REP]; 241de57606cSSage Weil }; 242de57606cSSage Weil 243de57606cSSage Weil /* 244de57606cSSage Weil * We cache inode xattrs as an encoded blob until they are first used, 245de57606cSSage Weil * at which point we parse them into an rbtree. 246de57606cSSage Weil */ 247de57606cSSage Weil struct ceph_inode_xattr { 248de57606cSSage Weil struct rb_node node; 249de57606cSSage Weil 250de57606cSSage Weil const char *name; 251de57606cSSage Weil int name_len; 252de57606cSSage Weil const char *val; 253de57606cSSage Weil int val_len; 254de57606cSSage Weil int dirty; 255de57606cSSage Weil 256de57606cSSage Weil int should_free_name; 257de57606cSSage Weil int should_free_val; 258de57606cSSage Weil }; 259de57606cSSage Weil 2603d14c5d2SYehuda Sadeh /* 2613d14c5d2SYehuda Sadeh * Ceph dentry state 2623d14c5d2SYehuda Sadeh */ 2633d14c5d2SYehuda Sadeh struct ceph_dentry_info { 26437c4efc1SYan, Zheng struct dentry *dentry; 2653d14c5d2SYehuda Sadeh struct ceph_mds_session *lease_session; 26637c4efc1SYan, Zheng struct list_head lease_list; 26737c4efc1SYan, Zheng unsigned flags; 26897aeb6bfSYan, Zheng int lease_shared_gen; 26997aeb6bfSYan, Zheng u32 lease_gen; 2703d14c5d2SYehuda Sadeh u32 lease_seq; 2713d14c5d2SYehuda Sadeh unsigned long lease_renew_after, lease_renew_from; 2729b16f03cSMiklos Szeredi unsigned long time; 2733d14c5d2SYehuda Sadeh u64 offset; 2743d14c5d2SYehuda Sadeh }; 2753d14c5d2SYehuda Sadeh 27637c4efc1SYan, Zheng #define CEPH_DENTRY_REFERENCED 1 27737c4efc1SYan, Zheng #define CEPH_DENTRY_LEASE_LIST 2 27837c4efc1SYan, Zheng #define CEPH_DENTRY_SHRINK_LIST 4 27937c4efc1SYan, Zheng 280de57606cSSage Weil struct ceph_inode_xattrs_info { 281de57606cSSage Weil /* 282de57606cSSage Weil * (still encoded) xattr blob. we avoid the overhead of parsing 283de57606cSSage Weil * this until someone actually calls getxattr, etc. 284de57606cSSage Weil * 285de57606cSSage Weil * blob->vec.iov_len == 4 implies there are no xattrs; blob == 286de57606cSSage Weil * NULL means we don't know. 287de57606cSSage Weil */ 288de57606cSSage Weil struct ceph_buffer *blob, *prealloc_blob; 289de57606cSSage Weil 290de57606cSSage Weil struct rb_root index; 291de57606cSSage Weil bool dirty; 292de57606cSSage Weil int count; 293de57606cSSage Weil int names_size; 294de57606cSSage Weil int vals_size; 295de57606cSSage Weil u64 version, index_version; 296de57606cSSage Weil }; 297de57606cSSage Weil 298de57606cSSage Weil /* 299de57606cSSage Weil * Ceph inode. 300de57606cSSage Weil */ 301de57606cSSage Weil struct ceph_inode_info { 302de57606cSSage Weil struct ceph_vino i_vino; /* ceph ino + snap */ 303de57606cSSage Weil 304be655596SSage Weil spinlock_t i_ceph_lock; 305be655596SSage Weil 306de57606cSSage Weil u64 i_version; 30731c542a1SYan, Zheng u64 i_inline_version; 308de57606cSSage Weil u32 i_time_warp_seq; 309de57606cSSage Weil 310de57606cSSage Weil unsigned i_ceph_flags; 311fdd4e158SYan, Zheng atomic64_t i_release_count; 312fdd4e158SYan, Zheng atomic64_t i_ordered_count; 313fdd4e158SYan, Zheng atomic64_t i_complete_seq[2]; 314de57606cSSage Weil 3156c0f3af7SSage Weil struct ceph_dir_layout i_dir_layout; 316de57606cSSage Weil struct ceph_file_layout i_layout; 317de57606cSSage Weil char *i_symlink; 318de57606cSSage Weil 319de57606cSSage Weil /* for dirs */ 3209bbeab41SArnd Bergmann struct timespec64 i_rctime; 321de57606cSSage Weil u64 i_rbytes, i_rfiles, i_rsubdirs; 322de57606cSSage Weil u64 i_files, i_subdirs; 323de57606cSSage Weil 324fb18a575SLuis Henriques /* quotas */ 325fb18a575SLuis Henriques u64 i_max_bytes, i_max_files; 326fb18a575SLuis Henriques 32708796873SYan, Zheng s32 i_dir_pin; 32808796873SYan, Zheng 329de57606cSSage Weil struct rb_root i_fragtree; 3301b1bc16dSYan, Zheng int i_fragtree_nsplits; 331de57606cSSage Weil struct mutex i_fragtree_mutex; 332de57606cSSage Weil 333de57606cSSage Weil struct ceph_inode_xattrs_info i_xattrs; 334de57606cSSage Weil 335be655596SSage Weil /* capabilities. protected _both_ by i_ceph_lock and cap->session's 336de57606cSSage Weil * s_mutex. */ 337de57606cSSage Weil struct rb_root i_caps; /* cap list */ 338de57606cSSage Weil struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ 339de57606cSSage Weil unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ 340de57606cSSage Weil struct list_head i_dirty_item, i_flushing_item; 341de57606cSSage Weil /* we need to track cap writeback on a per-cap-bit basis, to allow 342de57606cSSage Weil * overlapping, pipelined cap flushes to the mds. we can probably 343de57606cSSage Weil * reduce the tid to 8 bits if we're concerned about inode size. */ 344f66fd9f0SYan, Zheng struct ceph_cap_flush *i_prealloc_cap_flush; 345e4500b5eSYan, Zheng struct list_head i_cap_flush_list; 346de57606cSSage Weil wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ 347de57606cSSage Weil unsigned long i_hold_caps_min; /* jiffies */ 348de57606cSSage Weil unsigned long i_hold_caps_max; /* jiffies */ 349de57606cSSage Weil struct list_head i_cap_delay_list; /* for delayed cap release to mds */ 350de57606cSSage Weil struct ceph_cap_reservation i_cap_migration_resv; 351de57606cSSage Weil struct list_head i_cap_snaps; /* snapped state pending flush to mds */ 3527d8cb26dSSage Weil struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or 3537d8cb26dSSage Weil dirty|flushing caps */ 354de57606cSSage Weil unsigned i_snap_caps; /* cap bits for snapped files */ 355de57606cSSage Weil 356774a6a11SYan, Zheng int i_nr_by_mode[CEPH_FILE_MODE_BITS]; /* open file counts */ 357de57606cSSage Weil 358b0d7c223SYan, Zheng struct mutex i_truncate_mutex; 359de57606cSSage Weil u32 i_truncate_seq; /* last truncate to smaller size */ 360de57606cSSage Weil u64 i_truncate_size; /* and the size we last truncated down to */ 361de57606cSSage Weil int i_truncate_pending; /* still need to call vmtruncate */ 362de57606cSSage Weil 363de57606cSSage Weil u64 i_max_size; /* max file size authorized by mds */ 364de57606cSSage Weil u64 i_reported_size; /* (max_)size reported to or requested of mds */ 365de57606cSSage Weil u64 i_wanted_max_size; /* offset we'd like to write too */ 366de57606cSSage Weil u64 i_requested_max_size; /* max_size we've requested */ 367de57606cSSage Weil 368de57606cSSage Weil /* held references to caps */ 369de57606cSSage Weil int i_pin_ref; 370d3d0720dSHenry C Chang int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref; 371de57606cSSage Weil int i_wrbuffer_ref, i_wrbuffer_ref_head; 37289aa5930SYan, Zheng atomic_t i_filelock_ref; 37397aeb6bfSYan, Zheng atomic_t i_shared_gen; /* increment each time we get FILE_SHARED */ 374cd045cb4SSage Weil u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ 375de57606cSSage Weil u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ 376de57606cSSage Weil 377de57606cSSage Weil struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ 37868cd5b4bSYan, Zheng struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ 379de57606cSSage Weil spinlock_t i_unsafe_lock; 380de57606cSSage Weil 38175c9627eSYan, Zheng union { 382de57606cSSage Weil struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ 38375c9627eSYan, Zheng struct ceph_snapid_map *i_snapid_map; /* snapid -> dev_t */ 38475c9627eSYan, Zheng }; 385de57606cSSage Weil int i_snap_realm_counter; /* snap realm (if caps) */ 386de57606cSSage Weil struct list_head i_snap_realm_item; 387de57606cSSage Weil struct list_head i_snap_flush_item; 388245ce991SJeff Layton struct timespec64 i_btime; 389193e7b37SDavid Disseldorp struct timespec64 i_snap_btime; 390de57606cSSage Weil 3911cf89a8dSYan, Zheng struct work_struct i_work; 3921cf89a8dSYan, Zheng unsigned long i_work_mask; 393de57606cSSage Weil 39499ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 39599ccbd22SMilosz Tanski struct fscache_cookie *fscache; 396f7f7e7a0SYan, Zheng u32 i_fscache_gen; 39799ccbd22SMilosz Tanski #endif 398*f4b97866SYan, Zheng errseq_t i_meta_err; 399*f4b97866SYan, Zheng 400de57606cSSage Weil struct inode vfs_inode; /* at end */ 401de57606cSSage Weil }; 402de57606cSSage Weil 403de57606cSSage Weil static inline struct ceph_inode_info *ceph_inode(struct inode *inode) 404de57606cSSage Weil { 405fbbccec9SNoah Watkins return container_of(inode, struct ceph_inode_info, vfs_inode); 406de57606cSSage Weil } 407de57606cSSage Weil 408ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode) 409ad1fee96SYehuda Sadeh { 410ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)inode->i_sb->s_fs_info; 411ad1fee96SYehuda Sadeh } 412ad1fee96SYehuda Sadeh 413ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb) 414ad1fee96SYehuda Sadeh { 415ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)sb->s_fs_info; 416ad1fee96SYehuda Sadeh } 417ad1fee96SYehuda Sadeh 4183d14c5d2SYehuda Sadeh static inline struct ceph_vino ceph_vino(struct inode *inode) 4193d14c5d2SYehuda Sadeh { 4203d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino; 4213d14c5d2SYehuda Sadeh } 4223d14c5d2SYehuda Sadeh 4233d14c5d2SYehuda Sadeh /* 4243d14c5d2SYehuda Sadeh * ino_t is <64 bits on many architectures, blech. 4253d14c5d2SYehuda Sadeh * 426ad1fee96SYehuda Sadeh * i_ino (kernel inode) st_ino (userspace) 427ad1fee96SYehuda Sadeh * i386 32 32 428ad1fee96SYehuda Sadeh * x86_64+ino32 64 32 429ad1fee96SYehuda Sadeh * x86_64 64 64 430ad1fee96SYehuda Sadeh */ 4313310f754SAmon Ott static inline u32 ceph_ino_to_ino32(__u64 vino) 432ad1fee96SYehuda Sadeh { 4333310f754SAmon Ott u32 ino = vino & 0xffffffff; 4343310f754SAmon Ott ino ^= vino >> 32; 435ad1fee96SYehuda Sadeh if (!ino) 436a661fc56SAmon Ott ino = 2; 437ad1fee96SYehuda Sadeh return ino; 438ad1fee96SYehuda Sadeh } 439ad1fee96SYehuda Sadeh 440ad1fee96SYehuda Sadeh /* 441ad1fee96SYehuda Sadeh * kernel i_ino value 4423d14c5d2SYehuda Sadeh */ 4433d14c5d2SYehuda Sadeh static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) 4443d14c5d2SYehuda Sadeh { 4453d14c5d2SYehuda Sadeh #if BITS_PER_LONG == 32 4463310f754SAmon Ott return ceph_ino_to_ino32(vino.ino); 4473310f754SAmon Ott #else 4483310f754SAmon Ott return (ino_t)vino.ino; 4493d14c5d2SYehuda Sadeh #endif 4503d14c5d2SYehuda Sadeh } 4513d14c5d2SYehuda Sadeh 452ad1fee96SYehuda Sadeh /* 453ad1fee96SYehuda Sadeh * user-visible ino (stat, filldir) 454ad1fee96SYehuda Sadeh */ 455ad1fee96SYehuda Sadeh #if BITS_PER_LONG == 32 456ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 457ad1fee96SYehuda Sadeh { 458ad1fee96SYehuda Sadeh return ino; 459ad1fee96SYehuda Sadeh } 460ad1fee96SYehuda Sadeh #else 461ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 462ad1fee96SYehuda Sadeh { 463ad1fee96SYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32)) 464ad1fee96SYehuda Sadeh ino = ceph_ino_to_ino32(ino); 465ad1fee96SYehuda Sadeh return ino; 466ad1fee96SYehuda Sadeh } 467ad1fee96SYehuda Sadeh #endif 468ad1fee96SYehuda Sadeh 469ad1fee96SYehuda Sadeh 4703d14c5d2SYehuda Sadeh /* for printf-style formatting */ 4713d14c5d2SYehuda Sadeh #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap 4723d14c5d2SYehuda Sadeh 4733d14c5d2SYehuda Sadeh static inline u64 ceph_ino(struct inode *inode) 4743d14c5d2SYehuda Sadeh { 4753d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.ino; 4763d14c5d2SYehuda Sadeh } 4773d14c5d2SYehuda Sadeh static inline u64 ceph_snap(struct inode *inode) 4783d14c5d2SYehuda Sadeh { 4793d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.snap; 4803d14c5d2SYehuda Sadeh } 4813d14c5d2SYehuda Sadeh 4823d14c5d2SYehuda Sadeh static inline int ceph_ino_compare(struct inode *inode, void *data) 4833d14c5d2SYehuda Sadeh { 4843d14c5d2SYehuda Sadeh struct ceph_vino *pvino = (struct ceph_vino *)data; 4853d14c5d2SYehuda Sadeh struct ceph_inode_info *ci = ceph_inode(inode); 4863d14c5d2SYehuda Sadeh return ci->i_vino.ino == pvino->ino && 4873d14c5d2SYehuda Sadeh ci->i_vino.snap == pvino->snap; 4883d14c5d2SYehuda Sadeh } 4893d14c5d2SYehuda Sadeh 4903d14c5d2SYehuda Sadeh static inline struct inode *ceph_find_inode(struct super_block *sb, 4913d14c5d2SYehuda Sadeh struct ceph_vino vino) 4923d14c5d2SYehuda Sadeh { 4933d14c5d2SYehuda Sadeh ino_t t = ceph_vino_to_ino(vino); 4943d14c5d2SYehuda Sadeh return ilookup5(sb, t, ceph_ino_compare, &vino); 4953d14c5d2SYehuda Sadeh } 4963d14c5d2SYehuda Sadeh 4973d14c5d2SYehuda Sadeh 4983d14c5d2SYehuda Sadeh /* 4993d14c5d2SYehuda Sadeh * Ceph inode. 5003d14c5d2SYehuda Sadeh */ 50110183a69SYan, Zheng #define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ 50210183a69SYan, Zheng #define CEPH_I_NODELAY (1 << 1) /* do not delay cap release */ 50310183a69SYan, Zheng #define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ 50410183a69SYan, Zheng #define CEPH_I_NOFLUSH (1 << 3) /* do not flush dirty caps */ 50510183a69SYan, Zheng #define CEPH_I_POOL_PERM (1 << 4) /* pool rd/wr bits are valid */ 50610183a69SYan, Zheng #define CEPH_I_POOL_RD (1 << 5) /* can read from pool */ 50710183a69SYan, Zheng #define CEPH_I_POOL_WR (1 << 6) /* can write to pool */ 508315f2408SYan, Zheng #define CEPH_I_SEC_INITED (1 << 7) /* security initialized */ 50977310320SYan, Zheng #define CEPH_I_CAP_DROPPED (1 << 8) /* caps were forcibly dropped */ 51013c2b57dSYan, Zheng #define CEPH_I_KICK_FLUSH (1 << 9) /* kick flushing caps */ 51170220ac8SYan, Zheng #define CEPH_I_FLUSH_SNAPS (1 << 10) /* need flush snapss */ 51226544c62SJeff Layton #define CEPH_I_ERROR_WRITE (1 << 11) /* have seen write errors */ 513b3f8d68fSYan, Zheng #define CEPH_I_ERROR_FILELOCK (1 << 12) /* have seen file lock errors */ 514b3f8d68fSYan, Zheng 51526544c62SJeff Layton 51626544c62SJeff Layton /* 5171cf89a8dSYan, Zheng * Masks of ceph inode work. 5181cf89a8dSYan, Zheng */ 5191cf89a8dSYan, Zheng #define CEPH_I_WORK_WRITEBACK 0 /* writeback */ 5201cf89a8dSYan, Zheng #define CEPH_I_WORK_INVALIDATE_PAGES 1 /* invalidate pages */ 5211cf89a8dSYan, Zheng #define CEPH_I_WORK_VMTRUNCATE 2 /* vmtruncate */ 5221cf89a8dSYan, Zheng 5231cf89a8dSYan, Zheng /* 52426544c62SJeff Layton * We set the ERROR_WRITE bit when we start seeing write errors on an inode 52526544c62SJeff Layton * and then clear it when they start succeeding. Note that we do a lockless 52626544c62SJeff Layton * check first, and only take the lock if it looks like it needs to be changed. 52726544c62SJeff Layton * The write submission code just takes this as a hint, so we're not too 52826544c62SJeff Layton * worried if a few slip through in either direction. 52926544c62SJeff Layton */ 53026544c62SJeff Layton static inline void ceph_set_error_write(struct ceph_inode_info *ci) 53126544c62SJeff Layton { 53226544c62SJeff Layton if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE)) { 53326544c62SJeff Layton spin_lock(&ci->i_ceph_lock); 53426544c62SJeff Layton ci->i_ceph_flags |= CEPH_I_ERROR_WRITE; 53526544c62SJeff Layton spin_unlock(&ci->i_ceph_lock); 53626544c62SJeff Layton } 53726544c62SJeff Layton } 53826544c62SJeff Layton 53926544c62SJeff Layton static inline void ceph_clear_error_write(struct ceph_inode_info *ci) 54026544c62SJeff Layton { 54126544c62SJeff Layton if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE) { 54226544c62SJeff Layton spin_lock(&ci->i_ceph_lock); 54326544c62SJeff Layton ci->i_ceph_flags &= ~CEPH_I_ERROR_WRITE; 54426544c62SJeff Layton spin_unlock(&ci->i_ceph_lock); 54526544c62SJeff Layton } 54626544c62SJeff Layton } 5473d14c5d2SYehuda Sadeh 5482f276c51SYan, Zheng static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, 549fdd4e158SYan, Zheng long long release_count, 550fdd4e158SYan, Zheng long long ordered_count) 551de57606cSSage Weil { 55274960773SAndrea Parri /* 55374960773SAndrea Parri * Makes sure operations that setup readdir cache (update page 55474960773SAndrea Parri * cache and i_size) are strongly ordered w.r.t. the following 55574960773SAndrea Parri * atomic64_set() operations. 55674960773SAndrea Parri */ 55774960773SAndrea Parri smp_mb(); 558fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], release_count); 559fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], ordered_count); 560de57606cSSage Weil } 561de57606cSSage Weil 5622f276c51SYan, Zheng static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) 563de57606cSSage Weil { 564fdd4e158SYan, Zheng atomic64_inc(&ci->i_release_count); 565fdd4e158SYan, Zheng } 566fdd4e158SYan, Zheng 567fdd4e158SYan, Zheng static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) 568fdd4e158SYan, Zheng { 569fdd4e158SYan, Zheng atomic64_inc(&ci->i_ordered_count); 570de57606cSSage Weil } 571de57606cSSage Weil 5722f276c51SYan, Zheng static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) 573de57606cSSage Weil { 574fdd4e158SYan, Zheng return atomic64_read(&ci->i_complete_seq[0]) == 575fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count); 5762f276c51SYan, Zheng } 577de57606cSSage Weil 57870db4f36SYan, Zheng static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) 57970db4f36SYan, Zheng { 580fdd4e158SYan, Zheng return atomic64_read(&ci->i_complete_seq[0]) == 581fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count) && 582fdd4e158SYan, Zheng atomic64_read(&ci->i_complete_seq[1]) == 583fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count); 58470db4f36SYan, Zheng } 58570db4f36SYan, Zheng 5862f276c51SYan, Zheng static inline void ceph_dir_clear_complete(struct inode *inode) 5872f276c51SYan, Zheng { 5882f276c51SYan, Zheng __ceph_dir_clear_complete(ceph_inode(inode)); 5892f276c51SYan, Zheng } 5902f276c51SYan, Zheng 59170db4f36SYan, Zheng static inline void ceph_dir_clear_ordered(struct inode *inode) 5922f276c51SYan, Zheng { 593fdd4e158SYan, Zheng __ceph_dir_clear_ordered(ceph_inode(inode)); 594de57606cSSage Weil } 595de57606cSSage Weil 59670db4f36SYan, Zheng static inline bool ceph_dir_is_complete_ordered(struct inode *inode) 59770db4f36SYan, Zheng { 598fdd4e158SYan, Zheng bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode)); 599fdd4e158SYan, Zheng smp_rmb(); 60070db4f36SYan, Zheng return ret; 60170db4f36SYan, Zheng } 602de57606cSSage Weil 603de57606cSSage Weil /* find a specific frag @f */ 604de57606cSSage Weil extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, 605de57606cSSage Weil u32 f); 606de57606cSSage Weil 607de57606cSSage Weil /* 608de57606cSSage Weil * choose fragment for value @v. copy frag content to pfrag, if leaf 609de57606cSSage Weil * exists 610de57606cSSage Weil */ 611de57606cSSage Weil extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 612de57606cSSage Weil struct ceph_inode_frag *pfrag, 613de57606cSSage Weil int *found); 614de57606cSSage Weil 6151e9c2eb6SYan, Zheng static inline struct ceph_dentry_info *ceph_dentry(const struct dentry *dentry) 616de57606cSSage Weil { 617de57606cSSage Weil return (struct ceph_dentry_info *)dentry->d_fsdata; 618de57606cSSage Weil } 619de57606cSSage Weil 620de57606cSSage Weil /* 621de57606cSSage Weil * caps helpers 622de57606cSSage Weil */ 623de57606cSSage Weil static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) 624de57606cSSage Weil { 625de57606cSSage Weil return !RB_EMPTY_ROOT(&ci->i_caps); 626de57606cSSage Weil } 627de57606cSSage Weil 628de57606cSSage Weil extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); 629de57606cSSage Weil extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); 630de57606cSSage Weil extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, 631de57606cSSage Weil struct ceph_cap *cap); 632de57606cSSage Weil 633de57606cSSage Weil static inline int ceph_caps_issued(struct ceph_inode_info *ci) 634de57606cSSage Weil { 635de57606cSSage Weil int issued; 636be655596SSage Weil spin_lock(&ci->i_ceph_lock); 637de57606cSSage Weil issued = __ceph_caps_issued(ci, NULL); 638be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 639de57606cSSage Weil return issued; 640de57606cSSage Weil } 641de57606cSSage Weil 642de57606cSSage Weil static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, 643de57606cSSage Weil int touch) 644de57606cSSage Weil { 645de57606cSSage Weil int r; 646be655596SSage Weil spin_lock(&ci->i_ceph_lock); 647de57606cSSage Weil r = __ceph_caps_issued_mask(ci, mask, touch); 648be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 649de57606cSSage Weil return r; 650de57606cSSage Weil } 651de57606cSSage Weil 652de57606cSSage Weil static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) 653de57606cSSage Weil { 654de57606cSSage Weil return ci->i_dirty_caps | ci->i_flushing_caps; 655de57606cSSage Weil } 656f66fd9f0SYan, Zheng extern struct ceph_cap_flush *ceph_alloc_cap_flush(void); 657f66fd9f0SYan, Zheng extern void ceph_free_cap_flush(struct ceph_cap_flush *cf); 658f66fd9f0SYan, Zheng extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, 659f66fd9f0SYan, Zheng struct ceph_cap_flush **pcf); 660de57606cSSage Weil 6619563f88cSYan, Zheng extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, 6629563f88cSYan, Zheng struct ceph_cap *ocap, int mask); 663de57606cSSage Weil extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); 664de57606cSSage Weil extern int __ceph_caps_used(struct ceph_inode_info *ci); 665de57606cSSage Weil 666de57606cSSage Weil extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); 667de57606cSSage Weil 668de57606cSSage Weil /* 669de57606cSSage Weil * wanted, by virtue of open file modes AND cap refs (buffered/cached data) 670de57606cSSage Weil */ 671de57606cSSage Weil static inline int __ceph_caps_wanted(struct ceph_inode_info *ci) 672de57606cSSage Weil { 673de57606cSSage Weil int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci); 674de57606cSSage Weil if (w & CEPH_CAP_FILE_BUFFER) 675de57606cSSage Weil w |= CEPH_CAP_FILE_EXCL; /* we want EXCL if dirty data */ 676de57606cSSage Weil return w; 677de57606cSSage Weil } 678de57606cSSage Weil 679de57606cSSage Weil /* what the mds thinks we want */ 680c1944fedSYan, Zheng extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check); 681de57606cSSage Weil 68237151668SYehuda Sadeh extern void ceph_caps_init(struct ceph_mds_client *mdsc); 68337151668SYehuda Sadeh extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); 684fe33032dSYan, Zheng extern void ceph_adjust_caps_max_min(struct ceph_mds_client *mdsc, 685fe33032dSYan, Zheng struct ceph_mount_options *fsopt); 686e30ee581SZhi Zhang extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, 68737151668SYehuda Sadeh struct ceph_cap_reservation *ctx, int need); 6887bf8f736SChengguang Xu extern void ceph_unreserve_caps(struct ceph_mds_client *mdsc, 68937151668SYehuda Sadeh struct ceph_cap_reservation *ctx); 6903d14c5d2SYehuda Sadeh extern void ceph_reservation_status(struct ceph_fs_client *client, 691de57606cSSage Weil int *total, int *avail, int *used, 69285ccce43SSage Weil int *reserved, int *min); 693de57606cSSage Weil 694de57606cSSage Weil 695de57606cSSage Weil 696de57606cSSage Weil /* 697de57606cSSage Weil * we keep buffered readdir results attached to file->private_data 698de57606cSSage Weil */ 6994918b6d1SSage Weil #define CEPH_F_SYNC 1 7009cfa1098SSage Weil #define CEPH_F_ATEND 2 7014918b6d1SSage Weil 702de57606cSSage Weil struct ceph_file_info { 703252c6728SSage Weil short fmode; /* initialized on open */ 704252c6728SSage Weil short flags; /* CEPH_F_* */ 705de57606cSSage Weil 7065d988308SYan, Zheng spinlock_t rw_contexts_lock; 7075d988308SYan, Zheng struct list_head rw_contexts; 708*f4b97866SYan, Zheng 709*f4b97866SYan, Zheng errseq_t meta_err; 710bb48bd4dSChengguang Xu }; 711bb48bd4dSChengguang Xu 712bb48bd4dSChengguang Xu struct ceph_dir_file_info { 713bb48bd4dSChengguang Xu struct ceph_file_info file_info; 7145d988308SYan, Zheng 715de57606cSSage Weil /* readdir: position within the dir */ 716de57606cSSage Weil u32 frag; 717de57606cSSage Weil struct ceph_mds_request *last_readdir; 718de57606cSSage Weil 719de57606cSSage Weil /* readdir: position within a frag */ 720f0494206SYan, Zheng unsigned next_offset; /* offset of next chunk (last_name's + 1) */ 721de57606cSSage Weil char *last_name; /* last entry in previous chunk */ 722fdd4e158SYan, Zheng long long dir_release_count; 723fdd4e158SYan, Zheng long long dir_ordered_count; 724fdd4e158SYan, Zheng int readdir_cache_idx; 725de57606cSSage Weil 726de57606cSSage Weil /* used for -o dirstat read() on directory thing */ 727de57606cSSage Weil char *dir_info; 728de57606cSSage Weil int dir_info_len; 729de57606cSSage Weil }; 730de57606cSSage Weil 7315d988308SYan, Zheng struct ceph_rw_context { 7325d988308SYan, Zheng struct list_head list; 7335d988308SYan, Zheng struct task_struct *thread; 7345d988308SYan, Zheng int caps; 7355d988308SYan, Zheng }; 7365d988308SYan, Zheng 7375d988308SYan, Zheng #define CEPH_DEFINE_RW_CONTEXT(_name, _caps) \ 7385d988308SYan, Zheng struct ceph_rw_context _name = { \ 7395d988308SYan, Zheng .thread = current, \ 7405d988308SYan, Zheng .caps = _caps, \ 7415d988308SYan, Zheng } 7425d988308SYan, Zheng 7435d988308SYan, Zheng static inline void ceph_add_rw_context(struct ceph_file_info *cf, 7445d988308SYan, Zheng struct ceph_rw_context *ctx) 7455d988308SYan, Zheng { 7465d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7475d988308SYan, Zheng list_add(&ctx->list, &cf->rw_contexts); 7485d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7495d988308SYan, Zheng } 7505d988308SYan, Zheng 7515d988308SYan, Zheng static inline void ceph_del_rw_context(struct ceph_file_info *cf, 7525d988308SYan, Zheng struct ceph_rw_context *ctx) 7535d988308SYan, Zheng { 7545d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7555d988308SYan, Zheng list_del(&ctx->list); 7565d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7575d988308SYan, Zheng } 7585d988308SYan, Zheng 7595d988308SYan, Zheng static inline struct ceph_rw_context* 7605d988308SYan, Zheng ceph_find_rw_context(struct ceph_file_info *cf) 7615d988308SYan, Zheng { 7625d988308SYan, Zheng struct ceph_rw_context *ctx, *found = NULL; 7635d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7645d988308SYan, Zheng list_for_each_entry(ctx, &cf->rw_contexts, list) { 7655d988308SYan, Zheng if (ctx->thread == current) { 7665d988308SYan, Zheng found = ctx; 7675d988308SYan, Zheng break; 7685d988308SYan, Zheng } 7695d988308SYan, Zheng } 7705d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7715d988308SYan, Zheng return found; 7725d988308SYan, Zheng } 7735d988308SYan, Zheng 774fdd4e158SYan, Zheng struct ceph_readdir_cache_control { 775fdd4e158SYan, Zheng struct page *page; 776fdd4e158SYan, Zheng struct dentry **dentries; 777fdd4e158SYan, Zheng int index; 778fdd4e158SYan, Zheng }; 779de57606cSSage Weil 780de57606cSSage Weil /* 781de57606cSSage Weil * A "snap realm" describes a subset of the file hierarchy sharing 782de57606cSSage Weil * the same set of snapshots that apply to it. The realms themselves 783de57606cSSage Weil * are organized into a hierarchy, such that children inherit (some of) 784de57606cSSage Weil * the snapshots of their parents. 785de57606cSSage Weil * 786de57606cSSage Weil * All inodes within the realm that have capabilities are linked into a 787de57606cSSage Weil * per-realm list. 788de57606cSSage Weil */ 789de57606cSSage Weil struct ceph_snap_realm { 790de57606cSSage Weil u64 ino; 791e3161f17SLuis Henriques struct inode *inode; 792de57606cSSage Weil atomic_t nref; 793a105f00cSSage Weil struct rb_node node; 794a105f00cSSage Weil 795de57606cSSage Weil u64 created, seq; 796de57606cSSage Weil u64 parent_ino; 797de57606cSSage Weil u64 parent_since; /* snapid when our current parent became so */ 798de57606cSSage Weil 799de57606cSSage Weil u64 *prior_parent_snaps; /* snaps inherited from any parents we */ 800aa711ee3SAlex Elder u32 num_prior_parent_snaps; /* had prior to parent_since */ 801de57606cSSage Weil u64 *snaps; /* snaps specific to this realm */ 802aa711ee3SAlex Elder u32 num_snaps; 803de57606cSSage Weil 804de57606cSSage Weil struct ceph_snap_realm *parent; 805de57606cSSage Weil struct list_head children; /* list of child realms */ 806de57606cSSage Weil struct list_head child_item; 807de57606cSSage Weil 808de57606cSSage Weil struct list_head empty_item; /* if i have ref==0 */ 809de57606cSSage Weil 810ae00d4f3SSage Weil struct list_head dirty_item; /* if realm needs new context */ 811ae00d4f3SSage Weil 812de57606cSSage Weil /* the current set of snaps for this realm */ 813de57606cSSage Weil struct ceph_snap_context *cached_context; 814de57606cSSage Weil 815de57606cSSage Weil struct list_head inodes_with_caps; 816de57606cSSage Weil spinlock_t inodes_with_caps_lock; 817de57606cSSage Weil }; 818de57606cSSage Weil 8193d14c5d2SYehuda Sadeh static inline int default_congestion_kb(void) 8203d14c5d2SYehuda Sadeh { 8213d14c5d2SYehuda Sadeh int congestion_kb; 822de57606cSSage Weil 823de57606cSSage Weil /* 8243d14c5d2SYehuda Sadeh * Copied from NFS 8253d14c5d2SYehuda Sadeh * 8263d14c5d2SYehuda Sadeh * congestion size, scale with available memory. 8273d14c5d2SYehuda Sadeh * 8283d14c5d2SYehuda Sadeh * 64MB: 8192k 8293d14c5d2SYehuda Sadeh * 128MB: 11585k 8303d14c5d2SYehuda Sadeh * 256MB: 16384k 8313d14c5d2SYehuda Sadeh * 512MB: 23170k 8323d14c5d2SYehuda Sadeh * 1GB: 32768k 8333d14c5d2SYehuda Sadeh * 2GB: 46340k 8343d14c5d2SYehuda Sadeh * 4GB: 65536k 8353d14c5d2SYehuda Sadeh * 8GB: 92681k 8363d14c5d2SYehuda Sadeh * 16GB: 131072k 8373d14c5d2SYehuda Sadeh * 8383d14c5d2SYehuda Sadeh * This allows larger machines to have larger/more transfers. 8393d14c5d2SYehuda Sadeh * Limit the default to 256M 840de57606cSSage Weil */ 841ca79b0c2SArun KS congestion_kb = (16*int_sqrt(totalram_pages())) << (PAGE_SHIFT-10); 8423d14c5d2SYehuda Sadeh if (congestion_kb > 256*1024) 8433d14c5d2SYehuda Sadeh congestion_kb = 256*1024; 8443d14c5d2SYehuda Sadeh 8453d14c5d2SYehuda Sadeh return congestion_kb; 846de57606cSSage Weil } 847de57606cSSage Weil 848de57606cSSage Weil 849de57606cSSage Weil 850de57606cSSage Weil /* snap.c */ 851de57606cSSage Weil struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, 852de57606cSSage Weil u64 ino); 853de57606cSSage Weil extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, 854de57606cSSage Weil struct ceph_snap_realm *realm); 855de57606cSSage Weil extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, 856de57606cSSage Weil struct ceph_snap_realm *realm); 857de57606cSSage Weil extern int ceph_update_snap_trace(struct ceph_mds_client *m, 858982d6011SYan, Zheng void *p, void *e, bool deletion, 859982d6011SYan, Zheng struct ceph_snap_realm **realm_ret); 860de57606cSSage Weil extern void ceph_handle_snap(struct ceph_mds_client *mdsc, 8612600d2ddSSage Weil struct ceph_mds_session *session, 862de57606cSSage Weil struct ceph_msg *msg); 863fc837c8fSSage Weil extern void ceph_queue_cap_snap(struct ceph_inode_info *ci); 864de57606cSSage Weil extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, 865de57606cSSage Weil struct ceph_cap_snap *capsnap); 866de57606cSSage Weil extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); 867de57606cSSage Weil 86875c9627eSYan, Zheng extern struct ceph_snapid_map *ceph_get_snapid_map(struct ceph_mds_client *mdsc, 86975c9627eSYan, Zheng u64 snap); 87075c9627eSYan, Zheng extern void ceph_put_snapid_map(struct ceph_mds_client* mdsc, 87175c9627eSYan, Zheng struct ceph_snapid_map *sm); 87275c9627eSYan, Zheng extern void ceph_trim_snapid_map(struct ceph_mds_client *mdsc); 87375c9627eSYan, Zheng extern void ceph_cleanup_snapid_map(struct ceph_mds_client *mdsc); 87475c9627eSYan, Zheng 87575c9627eSYan, Zheng 876de57606cSSage Weil /* 877de57606cSSage Weil * a cap_snap is "pending" if it is still awaiting an in-progress 878de57606cSSage Weil * sync write (that may/may not still update size, mtime, etc.). 879de57606cSSage Weil */ 880de57606cSSage Weil static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) 881de57606cSSage Weil { 882de57606cSSage Weil return !list_empty(&ci->i_cap_snaps) && 88386056090SYan, Zheng list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap, 884de57606cSSage Weil ci_item)->writing; 885de57606cSSage Weil } 886de57606cSSage Weil 887de57606cSSage Weil /* inode.c */ 888de57606cSSage Weil extern const struct inode_operations ceph_file_iops; 889de57606cSSage Weil 890de57606cSSage Weil extern struct inode *ceph_alloc_inode(struct super_block *sb); 89187bc5b89SYan, Zheng extern void ceph_evict_inode(struct inode *inode); 892cfa6d412SAl Viro extern void ceph_free_inode(struct inode *inode); 893de57606cSSage Weil 894de57606cSSage Weil extern struct inode *ceph_get_inode(struct super_block *sb, 895de57606cSSage Weil struct ceph_vino vino); 896de57606cSSage Weil extern struct inode *ceph_get_snapdir(struct inode *parent); 897de57606cSSage Weil extern int ceph_fill_file_size(struct inode *inode, int issued, 898de57606cSSage Weil u32 truncate_seq, u64 truncate_size, u64 size); 899de57606cSSage Weil extern void ceph_fill_file_time(struct inode *inode, int issued, 9009bbeab41SArnd Bergmann u64 time_warp_seq, struct timespec64 *ctime, 9019bbeab41SArnd Bergmann struct timespec64 *mtime, 9029bbeab41SArnd Bergmann struct timespec64 *atime); 903de57606cSSage Weil extern int ceph_fill_trace(struct super_block *sb, 904f5a03b08SJeff Layton struct ceph_mds_request *req); 905de57606cSSage Weil extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, 906de57606cSSage Weil struct ceph_mds_session *session); 907de57606cSSage Weil 908de57606cSSage Weil extern int ceph_inode_holds_cap(struct inode *inode, int mask); 909de57606cSSage Weil 910efb0ca76SYan, Zheng extern bool ceph_inode_set_size(struct inode *inode, loff_t size); 911b415bf4fSYan, Zheng extern void __ceph_do_pending_vmtruncate(struct inode *inode); 9123c6f6b79SSage Weil extern void ceph_queue_vmtruncate(struct inode *inode); 9133c6f6b79SSage Weil extern void ceph_queue_invalidate(struct inode *inode); 9143c6f6b79SSage Weil extern void ceph_queue_writeback(struct inode *inode); 9153e1d0452SYan, Zheng extern void ceph_async_iput(struct inode *inode); 916de57606cSSage Weil 91701deead0SYan, Zheng extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 91801deead0SYan, Zheng int mask, bool force); 91901deead0SYan, Zheng static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) 92001deead0SYan, Zheng { 92101deead0SYan, Zheng return __ceph_do_getattr(inode, NULL, mask, force); 92201deead0SYan, Zheng } 92310556cb2SAl Viro extern int ceph_permission(struct inode *inode, int mask); 924a26feccaSAndreas Gruenbacher extern int __ceph_setattr(struct inode *inode, struct iattr *attr); 925de57606cSSage Weil extern int ceph_setattr(struct dentry *dentry, struct iattr *attr); 926a528d35eSDavid Howells extern int ceph_getattr(const struct path *path, struct kstat *stat, 927a528d35eSDavid Howells u32 request_mask, unsigned int flags); 928de57606cSSage Weil 929de57606cSSage Weil /* xattr.c */ 930a26feccaSAndreas Gruenbacher int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); 9317221fe4cSGuangliang Zhao ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); 932de57606cSSage Weil extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); 93312fe3ddaSLuis Henriques extern struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci); 934de57606cSSage Weil extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); 935b1ee94aaSYan, Zheng extern const struct xattr_handler *ceph_xattr_handlers[]; 936de57606cSSage Weil 9375c31e92dSYan, Zheng struct ceph_acl_sec_ctx { 9385c31e92dSYan, Zheng #ifdef CONFIG_CEPH_FS_POSIX_ACL 9395c31e92dSYan, Zheng void *default_acl; 9405c31e92dSYan, Zheng void *acl; 9415c31e92dSYan, Zheng #endif 942ac6713ccSYan, Zheng #ifdef CONFIG_CEPH_FS_SECURITY_LABEL 943ac6713ccSYan, Zheng void *sec_ctx; 944ac6713ccSYan, Zheng u32 sec_ctxlen; 945ac6713ccSYan, Zheng #endif 9465c31e92dSYan, Zheng struct ceph_pagelist *pagelist; 9475c31e92dSYan, Zheng }; 9485c31e92dSYan, Zheng 949315f2408SYan, Zheng #ifdef CONFIG_SECURITY 950315f2408SYan, Zheng extern bool ceph_security_xattr_deadlock(struct inode *in); 951315f2408SYan, Zheng extern bool ceph_security_xattr_wanted(struct inode *in); 952315f2408SYan, Zheng #else 953315f2408SYan, Zheng static inline bool ceph_security_xattr_deadlock(struct inode *in) 954315f2408SYan, Zheng { 955315f2408SYan, Zheng return false; 956315f2408SYan, Zheng } 957315f2408SYan, Zheng static inline bool ceph_security_xattr_wanted(struct inode *in) 958315f2408SYan, Zheng { 959315f2408SYan, Zheng return false; 960315f2408SYan, Zheng } 961315f2408SYan, Zheng #endif 962315f2408SYan, Zheng 963ac6713ccSYan, Zheng #ifdef CONFIG_CEPH_FS_SECURITY_LABEL 964ac6713ccSYan, Zheng extern int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, 965ac6713ccSYan, Zheng struct ceph_acl_sec_ctx *ctx); 966ac6713ccSYan, Zheng extern void ceph_security_invalidate_secctx(struct inode *inode); 967ac6713ccSYan, Zheng #else 968ac6713ccSYan, Zheng static inline int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, 969ac6713ccSYan, Zheng struct ceph_acl_sec_ctx *ctx) 970ac6713ccSYan, Zheng { 971ac6713ccSYan, Zheng return 0; 972ac6713ccSYan, Zheng } 973ac6713ccSYan, Zheng static inline void ceph_security_invalidate_secctx(struct inode *inode) 974ac6713ccSYan, Zheng { 975ac6713ccSYan, Zheng } 976ac6713ccSYan, Zheng #endif 9777221fe4cSGuangliang Zhao 9785c31e92dSYan, Zheng void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx); 9797221fe4cSGuangliang Zhao 9805c31e92dSYan, Zheng /* acl.c */ 9817221fe4cSGuangliang Zhao #ifdef CONFIG_CEPH_FS_POSIX_ACL 9827221fe4cSGuangliang Zhao 9837221fe4cSGuangliang Zhao struct posix_acl *ceph_get_acl(struct inode *, int); 98472466d0bSSage Weil int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type); 985b1ee94aaSYan, Zheng int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 9865c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx); 9875c31e92dSYan, Zheng void ceph_init_inode_acls(struct inode *inode, 9885c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx); 989c969d9bfSGuangliang Zhao 990c969d9bfSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 991c969d9bfSGuangliang Zhao { 992c969d9bfSGuangliang Zhao forget_all_cached_acls(inode); 993c969d9bfSGuangliang Zhao } 9947221fe4cSGuangliang Zhao 9957221fe4cSGuangliang Zhao #else 9967221fe4cSGuangliang Zhao 9977221fe4cSGuangliang Zhao #define ceph_get_acl NULL 99872466d0bSSage Weil #define ceph_set_acl NULL 9997221fe4cSGuangliang Zhao 1000b1ee94aaSYan, Zheng static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 10015c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx) 10027221fe4cSGuangliang Zhao { 10037221fe4cSGuangliang Zhao return 0; 10047221fe4cSGuangliang Zhao } 1005b1ee94aaSYan, Zheng static inline void ceph_init_inode_acls(struct inode *inode, 10065c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx) 1007b1ee94aaSYan, Zheng { 1008b1ee94aaSYan, Zheng } 10097221fe4cSGuangliang Zhao static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) 10107221fe4cSGuangliang Zhao { 10117221fe4cSGuangliang Zhao return 0; 10127221fe4cSGuangliang Zhao } 10137221fe4cSGuangliang Zhao 10147221fe4cSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 10157221fe4cSGuangliang Zhao { 10167221fe4cSGuangliang Zhao } 10177221fe4cSGuangliang Zhao 10187221fe4cSGuangliang Zhao #endif 10197221fe4cSGuangliang Zhao 1020de57606cSSage Weil /* caps.c */ 1021de57606cSSage Weil extern const char *ceph_cap_string(int c); 1022de57606cSSage Weil extern void ceph_handle_caps(struct ceph_mds_session *session, 1023de57606cSSage Weil struct ceph_msg *msg); 1024d9df2783SYan, Zheng extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, 1025d9df2783SYan, Zheng struct ceph_cap_reservation *ctx); 1026d9df2783SYan, Zheng extern void ceph_add_cap(struct inode *inode, 1027de57606cSSage Weil struct ceph_mds_session *session, u64 cap_id, 1028de57606cSSage Weil int fmode, unsigned issued, unsigned wanted, 1029de57606cSSage Weil unsigned cap, unsigned seq, u64 realmino, int flags, 1030d9df2783SYan, Zheng struct ceph_cap **new_cap); 1031a096b09aSYan, Zheng extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); 1032d6e47819SYan, Zheng extern void __ceph_remove_caps(struct ceph_inode_info *ci); 103337151668SYehuda Sadeh extern void ceph_put_cap(struct ceph_mds_client *mdsc, 103437151668SYehuda Sadeh struct ceph_cap *cap); 10359215aeeaSYan, Zheng extern int ceph_is_any_caps(struct inode *inode); 1036de57606cSSage Weil 1037f1a3d572SStephen Rothwell extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); 103802c24a82SJosef Bacik extern int ceph_fsync(struct file *file, loff_t start, loff_t end, 103902c24a82SJosef Bacik int datasync); 1040e548e9b9SYan, Zheng extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, 1041e548e9b9SYan, Zheng struct ceph_mds_session *session); 1042de57606cSSage Weil extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, 1043de57606cSSage Weil struct ceph_mds_session *session); 10442bc50259SGreg Farnum extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, 10452bc50259SGreg Farnum int mds); 1046de57606cSSage Weil extern int ceph_get_cap_mds(struct inode *inode); 1047de57606cSSage Weil extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); 1048de57606cSSage Weil extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); 1049de57606cSSage Weil extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, 1050de57606cSSage Weil struct ceph_snap_context *snapc); 1051ed9b430cSYan, Zheng extern void ceph_flush_snaps(struct ceph_inode_info *ci, 10520e294387SYan, Zheng struct ceph_mds_session **psession); 1053efb0ca76SYan, Zheng extern bool __ceph_should_report_size(struct ceph_inode_info *ci); 1054de57606cSSage Weil extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, 1055de57606cSSage Weil struct ceph_mds_session *session); 1056afcdaea3SSage Weil extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc); 1057afcdaea3SSage Weil extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); 10586ef0bc6dSZhi Zhang extern int ceph_drop_caps_for_unlink(struct inode *inode); 1059de57606cSSage Weil extern int ceph_encode_inode_release(void **p, struct inode *inode, 1060de57606cSSage Weil int mds, int drop, int unless, int force); 1061de57606cSSage Weil extern int ceph_encode_dentry_release(void **p, struct dentry *dn, 1062ca6c8ae0SJeff Layton struct inode *dir, 1063de57606cSSage Weil int mds, int drop, int unless); 1064de57606cSSage Weil 1065de57606cSSage Weil extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, 106631c542a1SYan, Zheng loff_t endoff, int *got, struct page **pinned_page); 10672b1ac852SYan, Zheng extern int ceph_try_get_caps(struct ceph_inode_info *ci, 10682ee9dd95SLuis Henriques int need, int want, bool nonblock, int *got); 1069de57606cSSage Weil 1070de57606cSSage Weil /* for counting open files by mode */ 1071774a6a11SYan, Zheng extern void __ceph_get_fmode(struct ceph_inode_info *ci, int mode); 1072de57606cSSage Weil extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode); 1073de57606cSSage Weil 1074de57606cSSage Weil /* addr.c */ 1075de57606cSSage Weil extern const struct address_space_operations ceph_aops; 1076de57606cSSage Weil extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); 107710183a69SYan, Zheng extern int ceph_uninline_data(struct file *filp, struct page *locked_page); 107810183a69SYan, Zheng extern int ceph_pool_perm_check(struct ceph_inode_info *ci, int need); 107910183a69SYan, Zheng extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); 1080de57606cSSage Weil 1081de57606cSSage Weil /* file.c */ 1082de57606cSSage Weil extern const struct file_operations ceph_file_fops; 10839e0eb85dSAlex Elder 108477310320SYan, Zheng extern int ceph_renew_caps(struct inode *inode); 1085de57606cSSage Weil extern int ceph_open(struct inode *inode, struct file *file); 10865ef50c3bSSage Weil extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, 108744907d79SAl Viro struct file *file, unsigned flags, umode_t mode); 1088de57606cSSage Weil extern int ceph_release(struct inode *inode, struct file *filp); 108931c542a1SYan, Zheng extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, 109031c542a1SYan, Zheng char *data, size_t len); 109155f2a045SIlya Dryomov 1092de57606cSSage Weil /* dir.c */ 1093de57606cSSage Weil extern const struct file_operations ceph_dir_fops; 109438c48b5fSYan, Zheng extern const struct file_operations ceph_snapdir_fops; 1095de57606cSSage Weil extern const struct inode_operations ceph_dir_iops; 109638c48b5fSYan, Zheng extern const struct inode_operations ceph_snapdir_iops; 109718fc8abdSAl Viro extern const struct dentry_operations ceph_dentry_ops; 1098de57606cSSage Weil 1099f3c4ebe6SYan, Zheng extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order); 1100de57606cSSage Weil extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); 1101468640e3SSage Weil extern int ceph_handle_snapdir(struct ceph_mds_request *req, 1102468640e3SSage Weil struct dentry *dentry, int err); 1103de57606cSSage Weil extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, 1104de57606cSSage Weil struct dentry *dentry, int err); 1105de57606cSSage Weil 110637c4efc1SYan, Zheng extern void __ceph_dentry_lease_touch(struct ceph_dentry_info *di); 110737c4efc1SYan, Zheng extern void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di); 110881a6cf2dSSage Weil extern void ceph_invalidate_dentry_lease(struct dentry *dentry); 110937c4efc1SYan, Zheng extern int ceph_trim_dentries(struct ceph_mds_client *mdsc); 1110e5f86dc3SSage Weil extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); 1111fdd4e158SYan, Zheng extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl); 1112de57606cSSage Weil 1113de57606cSSage Weil /* ioctl.c */ 1114de57606cSSage Weil extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 1115de57606cSSage Weil 1116de57606cSSage Weil /* export.c */ 1117de57606cSSage Weil extern const struct export_operations ceph_export_ops; 11183886274aSLuis Henriques struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino); 1119de57606cSSage Weil 112040819f6fSGreg Farnum /* locks.c */ 1121eb13e832SYan, Zheng extern __init void ceph_flock_init(void); 112240819f6fSGreg Farnum extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); 112340819f6fSGreg Farnum extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); 112440819f6fSGreg Farnum extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); 112539be95e9SJim Schutt extern int ceph_encode_locks_to_buffer(struct inode *inode, 112639be95e9SJim Schutt struct ceph_filelock *flocks, 112739be95e9SJim Schutt int num_fcntl_locks, 112839be95e9SJim Schutt int num_flock_locks); 112939be95e9SJim Schutt extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, 113039be95e9SJim Schutt struct ceph_pagelist *pagelist, 113139be95e9SJim Schutt int num_fcntl_locks, int num_flock_locks); 113240819f6fSGreg Farnum 11333d14c5d2SYehuda Sadeh /* debugfs.c */ 11341a829ff2SGreg Kroah-Hartman extern void ceph_fs_debugfs_init(struct ceph_fs_client *client); 11353d14c5d2SYehuda Sadeh extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); 11363d14c5d2SYehuda Sadeh 1137fb18a575SLuis Henriques /* quota.c */ 1138d557c48dSLuis Henriques static inline bool __ceph_has_any_quota(struct ceph_inode_info *ci) 1139d557c48dSLuis Henriques { 1140d557c48dSLuis Henriques return ci->i_max_files || ci->i_max_bytes; 1141d557c48dSLuis Henriques } 1142d557c48dSLuis Henriques 1143d557c48dSLuis Henriques extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc); 1144d557c48dSLuis Henriques 1145d557c48dSLuis Henriques static inline void __ceph_update_quota(struct ceph_inode_info *ci, 1146d557c48dSLuis Henriques u64 max_bytes, u64 max_files) 1147d557c48dSLuis Henriques { 1148d557c48dSLuis Henriques bool had_quota, has_quota; 1149d557c48dSLuis Henriques had_quota = __ceph_has_any_quota(ci); 1150d557c48dSLuis Henriques ci->i_max_bytes = max_bytes; 1151d557c48dSLuis Henriques ci->i_max_files = max_files; 1152d557c48dSLuis Henriques has_quota = __ceph_has_any_quota(ci); 1153d557c48dSLuis Henriques 1154d557c48dSLuis Henriques if (had_quota != has_quota) 1155d557c48dSLuis Henriques ceph_adjust_quota_realms_count(&ci->vfs_inode, has_quota); 1156d557c48dSLuis Henriques } 1157d557c48dSLuis Henriques 1158fb18a575SLuis Henriques extern void ceph_handle_quota(struct ceph_mds_client *mdsc, 1159fb18a575SLuis Henriques struct ceph_mds_session *session, 1160fb18a575SLuis Henriques struct ceph_msg *msg); 1161b7a29217SLuis Henriques extern bool ceph_quota_is_max_files_exceeded(struct inode *inode); 1162cafe21a4SLuis Henriques extern bool ceph_quota_is_same_realm(struct inode *old, struct inode *new); 11632b83845fSLuis Henriques extern bool ceph_quota_is_max_bytes_exceeded(struct inode *inode, 11642b83845fSLuis Henriques loff_t newlen); 11651ab302a0SLuis Henriques extern bool ceph_quota_is_max_bytes_approaching(struct inode *inode, 11661ab302a0SLuis Henriques loff_t newlen); 11679122eed5SLuis Henriques extern bool ceph_quota_update_statfs(struct ceph_fs_client *fsc, 11689122eed5SLuis Henriques struct kstatfs *buf); 11690c44a8e0SLuis Henriques extern void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc); 1170fb18a575SLuis Henriques 1171de57606cSSage Weil #endif /* _FS_CEPH_SUPER_H */ 1172