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; 104*81f148a9SYan, Zheng 105*81f148a9SYan, Zheng u32 filp_gen; 106719784baSChengguang Xu loff_t max_file_size; 10785ccce43SSage Weil 1083d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc; 109de57606cSSage Weil 110de57606cSSage Weil /* writeback */ 111de57606cSSage Weil mempool_t *wb_pagevec_pool; 112e3ec8d68SYan, Zheng atomic_long_t writeback_count; 113e3ec8d68SYan, Zheng 1141cf89a8dSYan, Zheng struct workqueue_struct *inode_wq; 115e3ec8d68SYan, Zheng struct workqueue_struct *cap_wq; 116de57606cSSage Weil 1170743304dSSage Weil #ifdef CONFIG_DEBUG_FS 1183d14c5d2SYehuda Sadeh struct dentry *debugfs_dentry_lru, *debugfs_caps; 1192baba250SYehuda Sadeh struct dentry *debugfs_congestion_kb; 12006edf046SSage Weil struct dentry *debugfs_bdi; 1213d14c5d2SYehuda Sadeh struct dentry *debugfs_mdsc, *debugfs_mdsmap; 12214ed9703SJohn Spray struct dentry *debugfs_mds_sessions; 1230743304dSSage Weil #endif 12499ccbd22SMilosz Tanski 12599ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 12699ccbd22SMilosz Tanski struct fscache_cookie *fscache; 12799ccbd22SMilosz Tanski #endif 128de57606cSSage Weil }; 129de57606cSSage Weil 1303d14c5d2SYehuda Sadeh 131de57606cSSage Weil /* 132de57606cSSage Weil * File i/o capability. This tracks shared state with the metadata 133de57606cSSage Weil * server that allows us to cache or writeback attributes or to read 134de57606cSSage Weil * and write data. For any given inode, we should have one or more 135de57606cSSage Weil * capabilities, one issued by each metadata server, and our 136de57606cSSage Weil * cumulative access is the OR of all issued capabilities. 137de57606cSSage Weil * 138de57606cSSage Weil * Each cap is referenced by the inode's i_caps rbtree and by per-mds 139de57606cSSage Weil * session capability lists. 140de57606cSSage Weil */ 141de57606cSSage Weil struct ceph_cap { 142de57606cSSage Weil struct ceph_inode_info *ci; 143de57606cSSage Weil struct rb_node ci_node; /* per-ci cap tree */ 144de57606cSSage Weil struct ceph_mds_session *session; 145de57606cSSage Weil struct list_head session_caps; /* per-session caplist */ 146de57606cSSage Weil u64 cap_id; /* unique cap id (mds provided) */ 147745a8e3bSYan, Zheng union { 148745a8e3bSYan, Zheng /* in-use caps */ 149745a8e3bSYan, Zheng struct { 150de57606cSSage Weil int issued; /* latest, from the mds */ 151745a8e3bSYan, Zheng int implemented; /* implemented superset of 152745a8e3bSYan, Zheng issued (for revocation) */ 153745a8e3bSYan, Zheng int mds, mds_wanted; 154745a8e3bSYan, Zheng }; 155745a8e3bSYan, Zheng /* caps to release */ 156745a8e3bSYan, Zheng struct { 157745a8e3bSYan, Zheng u64 cap_ino; 158745a8e3bSYan, Zheng int queue_release; 159745a8e3bSYan, Zheng }; 160745a8e3bSYan, Zheng }; 161685f9a5dSSage Weil u32 seq, issue_seq, mseq; 162685f9a5dSSage Weil u32 cap_gen; /* active/stale cycle */ 163de57606cSSage Weil unsigned long last_used; 164de57606cSSage Weil struct list_head caps_item; 165de57606cSSage Weil }; 166de57606cSSage Weil 167de57606cSSage Weil #define CHECK_CAPS_NODELAY 1 /* do not delay any further */ 168de57606cSSage Weil #define CHECK_CAPS_AUTHONLY 2 /* only check auth cap */ 169de57606cSSage Weil #define CHECK_CAPS_FLUSH 4 /* flush any dirty caps */ 170de57606cSSage Weil 1710e294387SYan, Zheng struct ceph_cap_flush { 1720e294387SYan, Zheng u64 tid; 1730e294387SYan, Zheng int caps; /* 0 means capsnap */ 174c8799fc4SYan, Zheng bool wake; /* wake up flush waiters when finish ? */ 1750e294387SYan, Zheng struct list_head g_list; // global 1760e294387SYan, Zheng struct list_head i_list; // per inode 1770e294387SYan, Zheng }; 1780e294387SYan, Zheng 179de57606cSSage Weil /* 180de57606cSSage Weil * Snapped cap state that is pending flush to mds. When a snapshot occurs, 181de57606cSSage Weil * we first complete any in-process sync writes and writeback any dirty 182de57606cSSage Weil * data before flushing the snapped state (tracked here) back to the MDS. 183de57606cSSage Weil */ 184de57606cSSage Weil struct ceph_cap_snap { 185805692d0SElena Reshetova refcount_t nref; 1860e294387SYan, Zheng struct list_head ci_item; 187de57606cSSage Weil 1880e294387SYan, Zheng struct ceph_cap_flush cap_flush; 1890e294387SYan, Zheng 1900e294387SYan, Zheng u64 follows; 191de57606cSSage Weil int issued, dirty; 192de57606cSSage Weil struct ceph_snap_context *context; 193de57606cSSage Weil 1945706b27dSAl Viro umode_t mode; 19505cb11c1SEric W. Biederman kuid_t uid; 19605cb11c1SEric W. Biederman kgid_t gid; 197de57606cSSage Weil 1984a625be4SSage Weil struct ceph_buffer *xattr_blob; 199de57606cSSage Weil u64 xattr_version; 200de57606cSSage Weil 201de57606cSSage Weil u64 size; 202176c77c9SJeff Layton u64 change_attr; 203ec62b894SJeff Layton struct timespec64 mtime, atime, ctime, btime; 204de57606cSSage Weil u64 time_warp_seq; 2055f743e45SYan, Zheng u64 truncate_size; 2065f743e45SYan, Zheng u32 truncate_seq; 207de57606cSSage Weil int writing; /* a sync write is still in progress */ 208de57606cSSage Weil int dirty_pages; /* dirty pages awaiting writeback */ 209e20d258dSYan, Zheng bool inline_data; 21086056090SYan, Zheng bool need_flush; 211de57606cSSage Weil }; 212de57606cSSage Weil 213de57606cSSage Weil static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) 214de57606cSSage Weil { 215805692d0SElena Reshetova if (refcount_dec_and_test(&capsnap->nref)) { 2164a625be4SSage Weil if (capsnap->xattr_blob) 2174a625be4SSage Weil ceph_buffer_put(capsnap->xattr_blob); 218de57606cSSage Weil kfree(capsnap); 219de57606cSSage Weil } 2204a625be4SSage Weil } 221de57606cSSage Weil 222de57606cSSage Weil /* 223de57606cSSage Weil * The frag tree describes how a directory is fragmented, potentially across 224de57606cSSage Weil * multiple metadata servers. It is also used to indicate points where 225de57606cSSage Weil * metadata authority is delegated, and whether/where metadata is replicated. 226de57606cSSage Weil * 227de57606cSSage Weil * A _leaf_ frag will be present in the i_fragtree IFF there is 228de57606cSSage Weil * delegation info. That is, if mds >= 0 || ndist > 0. 229de57606cSSage Weil */ 230de57606cSSage Weil #define CEPH_MAX_DIRFRAG_REP 4 231de57606cSSage Weil 232de57606cSSage Weil struct ceph_inode_frag { 233de57606cSSage Weil struct rb_node node; 234de57606cSSage Weil 235de57606cSSage Weil /* fragtree state */ 236de57606cSSage Weil u32 frag; 237de57606cSSage Weil int split_by; /* i.e. 2^(split_by) children */ 238de57606cSSage Weil 239de57606cSSage Weil /* delegation and replication info */ 240de57606cSSage Weil int mds; /* -1 if same authority as parent */ 241de57606cSSage Weil int ndist; /* >0 if replicated */ 242de57606cSSage Weil int dist[CEPH_MAX_DIRFRAG_REP]; 243de57606cSSage Weil }; 244de57606cSSage Weil 245de57606cSSage Weil /* 246de57606cSSage Weil * We cache inode xattrs as an encoded blob until they are first used, 247de57606cSSage Weil * at which point we parse them into an rbtree. 248de57606cSSage Weil */ 249de57606cSSage Weil struct ceph_inode_xattr { 250de57606cSSage Weil struct rb_node node; 251de57606cSSage Weil 252de57606cSSage Weil const char *name; 253de57606cSSage Weil int name_len; 254de57606cSSage Weil const char *val; 255de57606cSSage Weil int val_len; 256de57606cSSage Weil int dirty; 257de57606cSSage Weil 258de57606cSSage Weil int should_free_name; 259de57606cSSage Weil int should_free_val; 260de57606cSSage Weil }; 261de57606cSSage Weil 2623d14c5d2SYehuda Sadeh /* 2633d14c5d2SYehuda Sadeh * Ceph dentry state 2643d14c5d2SYehuda Sadeh */ 2653d14c5d2SYehuda Sadeh struct ceph_dentry_info { 26637c4efc1SYan, Zheng struct dentry *dentry; 2673d14c5d2SYehuda Sadeh struct ceph_mds_session *lease_session; 26837c4efc1SYan, Zheng struct list_head lease_list; 26937c4efc1SYan, Zheng unsigned flags; 27097aeb6bfSYan, Zheng int lease_shared_gen; 27197aeb6bfSYan, Zheng u32 lease_gen; 2723d14c5d2SYehuda Sadeh u32 lease_seq; 2733d14c5d2SYehuda Sadeh unsigned long lease_renew_after, lease_renew_from; 2749b16f03cSMiklos Szeredi unsigned long time; 2753d14c5d2SYehuda Sadeh u64 offset; 2763d14c5d2SYehuda Sadeh }; 2773d14c5d2SYehuda Sadeh 27837c4efc1SYan, Zheng #define CEPH_DENTRY_REFERENCED 1 27937c4efc1SYan, Zheng #define CEPH_DENTRY_LEASE_LIST 2 28037c4efc1SYan, Zheng #define CEPH_DENTRY_SHRINK_LIST 4 28137c4efc1SYan, Zheng 282de57606cSSage Weil struct ceph_inode_xattrs_info { 283de57606cSSage Weil /* 284de57606cSSage Weil * (still encoded) xattr blob. we avoid the overhead of parsing 285de57606cSSage Weil * this until someone actually calls getxattr, etc. 286de57606cSSage Weil * 287de57606cSSage Weil * blob->vec.iov_len == 4 implies there are no xattrs; blob == 288de57606cSSage Weil * NULL means we don't know. 289de57606cSSage Weil */ 290de57606cSSage Weil struct ceph_buffer *blob, *prealloc_blob; 291de57606cSSage Weil 292de57606cSSage Weil struct rb_root index; 293de57606cSSage Weil bool dirty; 294de57606cSSage Weil int count; 295de57606cSSage Weil int names_size; 296de57606cSSage Weil int vals_size; 297de57606cSSage Weil u64 version, index_version; 298de57606cSSage Weil }; 299de57606cSSage Weil 300de57606cSSage Weil /* 301de57606cSSage Weil * Ceph inode. 302de57606cSSage Weil */ 303de57606cSSage Weil struct ceph_inode_info { 304de57606cSSage Weil struct ceph_vino i_vino; /* ceph ino + snap */ 305de57606cSSage Weil 306be655596SSage Weil spinlock_t i_ceph_lock; 307be655596SSage Weil 308de57606cSSage Weil u64 i_version; 30931c542a1SYan, Zheng u64 i_inline_version; 310de57606cSSage Weil u32 i_time_warp_seq; 311de57606cSSage Weil 312de57606cSSage Weil unsigned i_ceph_flags; 313fdd4e158SYan, Zheng atomic64_t i_release_count; 314fdd4e158SYan, Zheng atomic64_t i_ordered_count; 315fdd4e158SYan, Zheng atomic64_t i_complete_seq[2]; 316de57606cSSage Weil 3176c0f3af7SSage Weil struct ceph_dir_layout i_dir_layout; 318de57606cSSage Weil struct ceph_file_layout i_layout; 319de57606cSSage Weil char *i_symlink; 320de57606cSSage Weil 321de57606cSSage Weil /* for dirs */ 3229bbeab41SArnd Bergmann struct timespec64 i_rctime; 323de57606cSSage Weil u64 i_rbytes, i_rfiles, i_rsubdirs; 324de57606cSSage Weil u64 i_files, i_subdirs; 325de57606cSSage Weil 326fb18a575SLuis Henriques /* quotas */ 327fb18a575SLuis Henriques u64 i_max_bytes, i_max_files; 328fb18a575SLuis Henriques 32908796873SYan, Zheng s32 i_dir_pin; 33008796873SYan, Zheng 331de57606cSSage Weil struct rb_root i_fragtree; 3321b1bc16dSYan, Zheng int i_fragtree_nsplits; 333de57606cSSage Weil struct mutex i_fragtree_mutex; 334de57606cSSage Weil 335de57606cSSage Weil struct ceph_inode_xattrs_info i_xattrs; 336de57606cSSage Weil 337be655596SSage Weil /* capabilities. protected _both_ by i_ceph_lock and cap->session's 338de57606cSSage Weil * s_mutex. */ 339de57606cSSage Weil struct rb_root i_caps; /* cap list */ 340de57606cSSage Weil struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ 341de57606cSSage Weil unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ 342de57606cSSage Weil struct list_head i_dirty_item, i_flushing_item; 343de57606cSSage Weil /* we need to track cap writeback on a per-cap-bit basis, to allow 344de57606cSSage Weil * overlapping, pipelined cap flushes to the mds. we can probably 345de57606cSSage Weil * reduce the tid to 8 bits if we're concerned about inode size. */ 346f66fd9f0SYan, Zheng struct ceph_cap_flush *i_prealloc_cap_flush; 347e4500b5eSYan, Zheng struct list_head i_cap_flush_list; 348de57606cSSage Weil wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ 349de57606cSSage Weil unsigned long i_hold_caps_min; /* jiffies */ 350de57606cSSage Weil unsigned long i_hold_caps_max; /* jiffies */ 351de57606cSSage Weil struct list_head i_cap_delay_list; /* for delayed cap release to mds */ 352de57606cSSage Weil struct ceph_cap_reservation i_cap_migration_resv; 353de57606cSSage Weil struct list_head i_cap_snaps; /* snapped state pending flush to mds */ 3547d8cb26dSSage Weil struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or 3557d8cb26dSSage Weil dirty|flushing caps */ 356de57606cSSage Weil unsigned i_snap_caps; /* cap bits for snapped files */ 357de57606cSSage Weil 358774a6a11SYan, Zheng int i_nr_by_mode[CEPH_FILE_MODE_BITS]; /* open file counts */ 359de57606cSSage Weil 360b0d7c223SYan, Zheng struct mutex i_truncate_mutex; 361de57606cSSage Weil u32 i_truncate_seq; /* last truncate to smaller size */ 362de57606cSSage Weil u64 i_truncate_size; /* and the size we last truncated down to */ 363de57606cSSage Weil int i_truncate_pending; /* still need to call vmtruncate */ 364de57606cSSage Weil 365de57606cSSage Weil u64 i_max_size; /* max file size authorized by mds */ 366de57606cSSage Weil u64 i_reported_size; /* (max_)size reported to or requested of mds */ 367de57606cSSage Weil u64 i_wanted_max_size; /* offset we'd like to write too */ 368de57606cSSage Weil u64 i_requested_max_size; /* max_size we've requested */ 369de57606cSSage Weil 370de57606cSSage Weil /* held references to caps */ 371de57606cSSage Weil int i_pin_ref; 372d3d0720dSHenry C Chang int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref; 373de57606cSSage Weil int i_wrbuffer_ref, i_wrbuffer_ref_head; 37489aa5930SYan, Zheng atomic_t i_filelock_ref; 37597aeb6bfSYan, Zheng atomic_t i_shared_gen; /* increment each time we get FILE_SHARED */ 376cd045cb4SSage Weil u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ 377de57606cSSage Weil u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ 378de57606cSSage Weil 379de57606cSSage Weil struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ 38068cd5b4bSYan, Zheng struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ 381de57606cSSage Weil spinlock_t i_unsafe_lock; 382de57606cSSage Weil 38375c9627eSYan, Zheng union { 384de57606cSSage Weil struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ 38575c9627eSYan, Zheng struct ceph_snapid_map *i_snapid_map; /* snapid -> dev_t */ 38675c9627eSYan, Zheng }; 387de57606cSSage Weil int i_snap_realm_counter; /* snap realm (if caps) */ 388de57606cSSage Weil struct list_head i_snap_realm_item; 389de57606cSSage Weil struct list_head i_snap_flush_item; 390245ce991SJeff Layton struct timespec64 i_btime; 391193e7b37SDavid Disseldorp struct timespec64 i_snap_btime; 392de57606cSSage Weil 3931cf89a8dSYan, Zheng struct work_struct i_work; 3941cf89a8dSYan, Zheng unsigned long i_work_mask; 395de57606cSSage Weil 39699ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 39799ccbd22SMilosz Tanski struct fscache_cookie *fscache; 398f7f7e7a0SYan, Zheng u32 i_fscache_gen; 39999ccbd22SMilosz Tanski #endif 400f4b97866SYan, Zheng errseq_t i_meta_err; 401f4b97866SYan, Zheng 402de57606cSSage Weil struct inode vfs_inode; /* at end */ 403de57606cSSage Weil }; 404de57606cSSage Weil 405de57606cSSage Weil static inline struct ceph_inode_info *ceph_inode(struct inode *inode) 406de57606cSSage Weil { 407fbbccec9SNoah Watkins return container_of(inode, struct ceph_inode_info, vfs_inode); 408de57606cSSage Weil } 409de57606cSSage Weil 410ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode) 411ad1fee96SYehuda Sadeh { 412ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)inode->i_sb->s_fs_info; 413ad1fee96SYehuda Sadeh } 414ad1fee96SYehuda Sadeh 415ad1fee96SYehuda Sadeh static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb) 416ad1fee96SYehuda Sadeh { 417ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)sb->s_fs_info; 418ad1fee96SYehuda Sadeh } 419ad1fee96SYehuda Sadeh 4203d14c5d2SYehuda Sadeh static inline struct ceph_vino ceph_vino(struct inode *inode) 4213d14c5d2SYehuda Sadeh { 4223d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino; 4233d14c5d2SYehuda Sadeh } 4243d14c5d2SYehuda Sadeh 4253d14c5d2SYehuda Sadeh /* 4263d14c5d2SYehuda Sadeh * ino_t is <64 bits on many architectures, blech. 4273d14c5d2SYehuda Sadeh * 428ad1fee96SYehuda Sadeh * i_ino (kernel inode) st_ino (userspace) 429ad1fee96SYehuda Sadeh * i386 32 32 430ad1fee96SYehuda Sadeh * x86_64+ino32 64 32 431ad1fee96SYehuda Sadeh * x86_64 64 64 432ad1fee96SYehuda Sadeh */ 4333310f754SAmon Ott static inline u32 ceph_ino_to_ino32(__u64 vino) 434ad1fee96SYehuda Sadeh { 4353310f754SAmon Ott u32 ino = vino & 0xffffffff; 4363310f754SAmon Ott ino ^= vino >> 32; 437ad1fee96SYehuda Sadeh if (!ino) 438a661fc56SAmon Ott ino = 2; 439ad1fee96SYehuda Sadeh return ino; 440ad1fee96SYehuda Sadeh } 441ad1fee96SYehuda Sadeh 442ad1fee96SYehuda Sadeh /* 443ad1fee96SYehuda Sadeh * kernel i_ino value 4443d14c5d2SYehuda Sadeh */ 4453d14c5d2SYehuda Sadeh static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) 4463d14c5d2SYehuda Sadeh { 4473d14c5d2SYehuda Sadeh #if BITS_PER_LONG == 32 4483310f754SAmon Ott return ceph_ino_to_ino32(vino.ino); 4493310f754SAmon Ott #else 4503310f754SAmon Ott return (ino_t)vino.ino; 4513d14c5d2SYehuda Sadeh #endif 4523d14c5d2SYehuda Sadeh } 4533d14c5d2SYehuda Sadeh 454ad1fee96SYehuda Sadeh /* 455ad1fee96SYehuda Sadeh * user-visible ino (stat, filldir) 456ad1fee96SYehuda Sadeh */ 457ad1fee96SYehuda Sadeh #if BITS_PER_LONG == 32 458ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 459ad1fee96SYehuda Sadeh { 460ad1fee96SYehuda Sadeh return ino; 461ad1fee96SYehuda Sadeh } 462ad1fee96SYehuda Sadeh #else 463ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 464ad1fee96SYehuda Sadeh { 465ad1fee96SYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32)) 466ad1fee96SYehuda Sadeh ino = ceph_ino_to_ino32(ino); 467ad1fee96SYehuda Sadeh return ino; 468ad1fee96SYehuda Sadeh } 469ad1fee96SYehuda Sadeh #endif 470ad1fee96SYehuda Sadeh 471ad1fee96SYehuda Sadeh 4723d14c5d2SYehuda Sadeh /* for printf-style formatting */ 4733d14c5d2SYehuda Sadeh #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap 4743d14c5d2SYehuda Sadeh 4753d14c5d2SYehuda Sadeh static inline u64 ceph_ino(struct inode *inode) 4763d14c5d2SYehuda Sadeh { 4773d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.ino; 4783d14c5d2SYehuda Sadeh } 4793d14c5d2SYehuda Sadeh static inline u64 ceph_snap(struct inode *inode) 4803d14c5d2SYehuda Sadeh { 4813d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.snap; 4823d14c5d2SYehuda Sadeh } 4833d14c5d2SYehuda Sadeh 4843d14c5d2SYehuda Sadeh static inline int ceph_ino_compare(struct inode *inode, void *data) 4853d14c5d2SYehuda Sadeh { 4863d14c5d2SYehuda Sadeh struct ceph_vino *pvino = (struct ceph_vino *)data; 4873d14c5d2SYehuda Sadeh struct ceph_inode_info *ci = ceph_inode(inode); 4883d14c5d2SYehuda Sadeh return ci->i_vino.ino == pvino->ino && 4893d14c5d2SYehuda Sadeh ci->i_vino.snap == pvino->snap; 4903d14c5d2SYehuda Sadeh } 4913d14c5d2SYehuda Sadeh 4923d14c5d2SYehuda Sadeh static inline struct inode *ceph_find_inode(struct super_block *sb, 4933d14c5d2SYehuda Sadeh struct ceph_vino vino) 4943d14c5d2SYehuda Sadeh { 4953d14c5d2SYehuda Sadeh ino_t t = ceph_vino_to_ino(vino); 4963d14c5d2SYehuda Sadeh return ilookup5(sb, t, ceph_ino_compare, &vino); 4973d14c5d2SYehuda Sadeh } 4983d14c5d2SYehuda Sadeh 4993d14c5d2SYehuda Sadeh 5003d14c5d2SYehuda Sadeh /* 5013d14c5d2SYehuda Sadeh * Ceph inode. 5023d14c5d2SYehuda Sadeh */ 50310183a69SYan, Zheng #define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ 50410183a69SYan, Zheng #define CEPH_I_NODELAY (1 << 1) /* do not delay cap release */ 50510183a69SYan, Zheng #define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ 50610183a69SYan, Zheng #define CEPH_I_NOFLUSH (1 << 3) /* do not flush dirty caps */ 50710183a69SYan, Zheng #define CEPH_I_POOL_PERM (1 << 4) /* pool rd/wr bits are valid */ 50810183a69SYan, Zheng #define CEPH_I_POOL_RD (1 << 5) /* can read from pool */ 50910183a69SYan, Zheng #define CEPH_I_POOL_WR (1 << 6) /* can write to pool */ 510315f2408SYan, Zheng #define CEPH_I_SEC_INITED (1 << 7) /* security initialized */ 51177310320SYan, Zheng #define CEPH_I_CAP_DROPPED (1 << 8) /* caps were forcibly dropped */ 51213c2b57dSYan, Zheng #define CEPH_I_KICK_FLUSH (1 << 9) /* kick flushing caps */ 51370220ac8SYan, Zheng #define CEPH_I_FLUSH_SNAPS (1 << 10) /* need flush snapss */ 51426544c62SJeff Layton #define CEPH_I_ERROR_WRITE (1 << 11) /* have seen write errors */ 515b3f8d68fSYan, Zheng #define CEPH_I_ERROR_FILELOCK (1 << 12) /* have seen file lock errors */ 516b3f8d68fSYan, Zheng 51726544c62SJeff Layton 51826544c62SJeff Layton /* 5191cf89a8dSYan, Zheng * Masks of ceph inode work. 5201cf89a8dSYan, Zheng */ 5211cf89a8dSYan, Zheng #define CEPH_I_WORK_WRITEBACK 0 /* writeback */ 5221cf89a8dSYan, Zheng #define CEPH_I_WORK_INVALIDATE_PAGES 1 /* invalidate pages */ 5231cf89a8dSYan, Zheng #define CEPH_I_WORK_VMTRUNCATE 2 /* vmtruncate */ 5241cf89a8dSYan, Zheng 5251cf89a8dSYan, Zheng /* 52626544c62SJeff Layton * We set the ERROR_WRITE bit when we start seeing write errors on an inode 52726544c62SJeff Layton * and then clear it when they start succeeding. Note that we do a lockless 52826544c62SJeff Layton * check first, and only take the lock if it looks like it needs to be changed. 52926544c62SJeff Layton * The write submission code just takes this as a hint, so we're not too 53026544c62SJeff Layton * worried if a few slip through in either direction. 53126544c62SJeff Layton */ 53226544c62SJeff Layton static inline void ceph_set_error_write(struct ceph_inode_info *ci) 53326544c62SJeff Layton { 53426544c62SJeff Layton if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE)) { 53526544c62SJeff Layton spin_lock(&ci->i_ceph_lock); 53626544c62SJeff Layton ci->i_ceph_flags |= CEPH_I_ERROR_WRITE; 53726544c62SJeff Layton spin_unlock(&ci->i_ceph_lock); 53826544c62SJeff Layton } 53926544c62SJeff Layton } 54026544c62SJeff Layton 54126544c62SJeff Layton static inline void ceph_clear_error_write(struct ceph_inode_info *ci) 54226544c62SJeff Layton { 54326544c62SJeff Layton if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE) { 54426544c62SJeff Layton spin_lock(&ci->i_ceph_lock); 54526544c62SJeff Layton ci->i_ceph_flags &= ~CEPH_I_ERROR_WRITE; 54626544c62SJeff Layton spin_unlock(&ci->i_ceph_lock); 54726544c62SJeff Layton } 54826544c62SJeff Layton } 5493d14c5d2SYehuda Sadeh 5502f276c51SYan, Zheng static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, 551fdd4e158SYan, Zheng long long release_count, 552fdd4e158SYan, Zheng long long ordered_count) 553de57606cSSage Weil { 55474960773SAndrea Parri /* 55574960773SAndrea Parri * Makes sure operations that setup readdir cache (update page 55674960773SAndrea Parri * cache and i_size) are strongly ordered w.r.t. the following 55774960773SAndrea Parri * atomic64_set() operations. 55874960773SAndrea Parri */ 55974960773SAndrea Parri smp_mb(); 560fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], release_count); 561fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], ordered_count); 562de57606cSSage Weil } 563de57606cSSage Weil 5642f276c51SYan, Zheng static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) 565de57606cSSage Weil { 566fdd4e158SYan, Zheng atomic64_inc(&ci->i_release_count); 567fdd4e158SYan, Zheng } 568fdd4e158SYan, Zheng 569fdd4e158SYan, Zheng static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) 570fdd4e158SYan, Zheng { 571fdd4e158SYan, Zheng atomic64_inc(&ci->i_ordered_count); 572de57606cSSage Weil } 573de57606cSSage Weil 5742f276c51SYan, Zheng static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) 575de57606cSSage Weil { 576fdd4e158SYan, Zheng return atomic64_read(&ci->i_complete_seq[0]) == 577fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count); 5782f276c51SYan, Zheng } 579de57606cSSage Weil 58070db4f36SYan, Zheng static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) 58170db4f36SYan, Zheng { 582fdd4e158SYan, Zheng return atomic64_read(&ci->i_complete_seq[0]) == 583fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count) && 584fdd4e158SYan, Zheng atomic64_read(&ci->i_complete_seq[1]) == 585fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count); 58670db4f36SYan, Zheng } 58770db4f36SYan, Zheng 5882f276c51SYan, Zheng static inline void ceph_dir_clear_complete(struct inode *inode) 5892f276c51SYan, Zheng { 5902f276c51SYan, Zheng __ceph_dir_clear_complete(ceph_inode(inode)); 5912f276c51SYan, Zheng } 5922f276c51SYan, Zheng 59370db4f36SYan, Zheng static inline void ceph_dir_clear_ordered(struct inode *inode) 5942f276c51SYan, Zheng { 595fdd4e158SYan, Zheng __ceph_dir_clear_ordered(ceph_inode(inode)); 596de57606cSSage Weil } 597de57606cSSage Weil 59870db4f36SYan, Zheng static inline bool ceph_dir_is_complete_ordered(struct inode *inode) 59970db4f36SYan, Zheng { 600fdd4e158SYan, Zheng bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode)); 601fdd4e158SYan, Zheng smp_rmb(); 60270db4f36SYan, Zheng return ret; 60370db4f36SYan, Zheng } 604de57606cSSage Weil 605de57606cSSage Weil /* find a specific frag @f */ 606de57606cSSage Weil extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, 607de57606cSSage Weil u32 f); 608de57606cSSage Weil 609de57606cSSage Weil /* 610de57606cSSage Weil * choose fragment for value @v. copy frag content to pfrag, if leaf 611de57606cSSage Weil * exists 612de57606cSSage Weil */ 613de57606cSSage Weil extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 614de57606cSSage Weil struct ceph_inode_frag *pfrag, 615de57606cSSage Weil int *found); 616de57606cSSage Weil 6171e9c2eb6SYan, Zheng static inline struct ceph_dentry_info *ceph_dentry(const struct dentry *dentry) 618de57606cSSage Weil { 619de57606cSSage Weil return (struct ceph_dentry_info *)dentry->d_fsdata; 620de57606cSSage Weil } 621de57606cSSage Weil 622de57606cSSage Weil /* 623de57606cSSage Weil * caps helpers 624de57606cSSage Weil */ 625de57606cSSage Weil static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) 626de57606cSSage Weil { 627de57606cSSage Weil return !RB_EMPTY_ROOT(&ci->i_caps); 628de57606cSSage Weil } 629de57606cSSage Weil 630de57606cSSage Weil extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); 631de57606cSSage Weil extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); 632de57606cSSage Weil extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, 633de57606cSSage Weil struct ceph_cap *cap); 634de57606cSSage Weil 635de57606cSSage Weil static inline int ceph_caps_issued(struct ceph_inode_info *ci) 636de57606cSSage Weil { 637de57606cSSage Weil int issued; 638be655596SSage Weil spin_lock(&ci->i_ceph_lock); 639de57606cSSage Weil issued = __ceph_caps_issued(ci, NULL); 640be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 641de57606cSSage Weil return issued; 642de57606cSSage Weil } 643de57606cSSage Weil 644de57606cSSage Weil static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, 645de57606cSSage Weil int touch) 646de57606cSSage Weil { 647de57606cSSage Weil int r; 648be655596SSage Weil spin_lock(&ci->i_ceph_lock); 649de57606cSSage Weil r = __ceph_caps_issued_mask(ci, mask, touch); 650be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 651de57606cSSage Weil return r; 652de57606cSSage Weil } 653de57606cSSage Weil 654de57606cSSage Weil static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) 655de57606cSSage Weil { 656de57606cSSage Weil return ci->i_dirty_caps | ci->i_flushing_caps; 657de57606cSSage Weil } 658f66fd9f0SYan, Zheng extern struct ceph_cap_flush *ceph_alloc_cap_flush(void); 659f66fd9f0SYan, Zheng extern void ceph_free_cap_flush(struct ceph_cap_flush *cf); 660f66fd9f0SYan, Zheng extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, 661f66fd9f0SYan, Zheng struct ceph_cap_flush **pcf); 662de57606cSSage Weil 6639563f88cSYan, Zheng extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, 6649563f88cSYan, Zheng struct ceph_cap *ocap, int mask); 665de57606cSSage Weil extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); 666de57606cSSage Weil extern int __ceph_caps_used(struct ceph_inode_info *ci); 667de57606cSSage Weil 668de57606cSSage Weil extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); 669de57606cSSage Weil 670de57606cSSage Weil /* 671de57606cSSage Weil * wanted, by virtue of open file modes AND cap refs (buffered/cached data) 672de57606cSSage Weil */ 673de57606cSSage Weil static inline int __ceph_caps_wanted(struct ceph_inode_info *ci) 674de57606cSSage Weil { 675de57606cSSage Weil int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci); 676de57606cSSage Weil if (w & CEPH_CAP_FILE_BUFFER) 677de57606cSSage Weil w |= CEPH_CAP_FILE_EXCL; /* we want EXCL if dirty data */ 678de57606cSSage Weil return w; 679de57606cSSage Weil } 680de57606cSSage Weil 681de57606cSSage Weil /* what the mds thinks we want */ 682c1944fedSYan, Zheng extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check); 683de57606cSSage Weil 68437151668SYehuda Sadeh extern void ceph_caps_init(struct ceph_mds_client *mdsc); 68537151668SYehuda Sadeh extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); 686fe33032dSYan, Zheng extern void ceph_adjust_caps_max_min(struct ceph_mds_client *mdsc, 687fe33032dSYan, Zheng struct ceph_mount_options *fsopt); 688e30ee581SZhi Zhang extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, 68937151668SYehuda Sadeh struct ceph_cap_reservation *ctx, int need); 6907bf8f736SChengguang Xu extern void ceph_unreserve_caps(struct ceph_mds_client *mdsc, 69137151668SYehuda Sadeh struct ceph_cap_reservation *ctx); 6923d14c5d2SYehuda Sadeh extern void ceph_reservation_status(struct ceph_fs_client *client, 693de57606cSSage Weil int *total, int *avail, int *used, 69485ccce43SSage Weil int *reserved, int *min); 695de57606cSSage Weil 696de57606cSSage Weil 697de57606cSSage Weil 698de57606cSSage Weil /* 699de57606cSSage Weil * we keep buffered readdir results attached to file->private_data 700de57606cSSage Weil */ 7014918b6d1SSage Weil #define CEPH_F_SYNC 1 7029cfa1098SSage Weil #define CEPH_F_ATEND 2 7034918b6d1SSage Weil 704de57606cSSage Weil struct ceph_file_info { 705252c6728SSage Weil short fmode; /* initialized on open */ 706252c6728SSage Weil short flags; /* CEPH_F_* */ 707de57606cSSage Weil 7085d988308SYan, Zheng spinlock_t rw_contexts_lock; 7095d988308SYan, Zheng struct list_head rw_contexts; 710f4b97866SYan, Zheng 711f4b97866SYan, Zheng errseq_t meta_err; 712*81f148a9SYan, Zheng u32 filp_gen; 713ff5d913dSYan, Zheng atomic_t num_locks; 714bb48bd4dSChengguang Xu }; 715bb48bd4dSChengguang Xu 716bb48bd4dSChengguang Xu struct ceph_dir_file_info { 717bb48bd4dSChengguang Xu struct ceph_file_info file_info; 7185d988308SYan, Zheng 719de57606cSSage Weil /* readdir: position within the dir */ 720de57606cSSage Weil u32 frag; 721de57606cSSage Weil struct ceph_mds_request *last_readdir; 722de57606cSSage Weil 723de57606cSSage Weil /* readdir: position within a frag */ 724f0494206SYan, Zheng unsigned next_offset; /* offset of next chunk (last_name's + 1) */ 725de57606cSSage Weil char *last_name; /* last entry in previous chunk */ 726fdd4e158SYan, Zheng long long dir_release_count; 727fdd4e158SYan, Zheng long long dir_ordered_count; 728fdd4e158SYan, Zheng int readdir_cache_idx; 729de57606cSSage Weil 730de57606cSSage Weil /* used for -o dirstat read() on directory thing */ 731de57606cSSage Weil char *dir_info; 732de57606cSSage Weil int dir_info_len; 733de57606cSSage Weil }; 734de57606cSSage Weil 7355d988308SYan, Zheng struct ceph_rw_context { 7365d988308SYan, Zheng struct list_head list; 7375d988308SYan, Zheng struct task_struct *thread; 7385d988308SYan, Zheng int caps; 7395d988308SYan, Zheng }; 7405d988308SYan, Zheng 7415d988308SYan, Zheng #define CEPH_DEFINE_RW_CONTEXT(_name, _caps) \ 7425d988308SYan, Zheng struct ceph_rw_context _name = { \ 7435d988308SYan, Zheng .thread = current, \ 7445d988308SYan, Zheng .caps = _caps, \ 7455d988308SYan, Zheng } 7465d988308SYan, Zheng 7475d988308SYan, Zheng static inline void ceph_add_rw_context(struct ceph_file_info *cf, 7485d988308SYan, Zheng struct ceph_rw_context *ctx) 7495d988308SYan, Zheng { 7505d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7515d988308SYan, Zheng list_add(&ctx->list, &cf->rw_contexts); 7525d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7535d988308SYan, Zheng } 7545d988308SYan, Zheng 7555d988308SYan, Zheng static inline void ceph_del_rw_context(struct ceph_file_info *cf, 7565d988308SYan, Zheng struct ceph_rw_context *ctx) 7575d988308SYan, Zheng { 7585d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7595d988308SYan, Zheng list_del(&ctx->list); 7605d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7615d988308SYan, Zheng } 7625d988308SYan, Zheng 7635d988308SYan, Zheng static inline struct ceph_rw_context* 7645d988308SYan, Zheng ceph_find_rw_context(struct ceph_file_info *cf) 7655d988308SYan, Zheng { 7665d988308SYan, Zheng struct ceph_rw_context *ctx, *found = NULL; 7675d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7685d988308SYan, Zheng list_for_each_entry(ctx, &cf->rw_contexts, list) { 7695d988308SYan, Zheng if (ctx->thread == current) { 7705d988308SYan, Zheng found = ctx; 7715d988308SYan, Zheng break; 7725d988308SYan, Zheng } 7735d988308SYan, Zheng } 7745d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7755d988308SYan, Zheng return found; 7765d988308SYan, Zheng } 7775d988308SYan, Zheng 778fdd4e158SYan, Zheng struct ceph_readdir_cache_control { 779fdd4e158SYan, Zheng struct page *page; 780fdd4e158SYan, Zheng struct dentry **dentries; 781fdd4e158SYan, Zheng int index; 782fdd4e158SYan, Zheng }; 783de57606cSSage Weil 784de57606cSSage Weil /* 785de57606cSSage Weil * A "snap realm" describes a subset of the file hierarchy sharing 786de57606cSSage Weil * the same set of snapshots that apply to it. The realms themselves 787de57606cSSage Weil * are organized into a hierarchy, such that children inherit (some of) 788de57606cSSage Weil * the snapshots of their parents. 789de57606cSSage Weil * 790de57606cSSage Weil * All inodes within the realm that have capabilities are linked into a 791de57606cSSage Weil * per-realm list. 792de57606cSSage Weil */ 793de57606cSSage Weil struct ceph_snap_realm { 794de57606cSSage Weil u64 ino; 795e3161f17SLuis Henriques struct inode *inode; 796de57606cSSage Weil atomic_t nref; 797a105f00cSSage Weil struct rb_node node; 798a105f00cSSage Weil 799de57606cSSage Weil u64 created, seq; 800de57606cSSage Weil u64 parent_ino; 801de57606cSSage Weil u64 parent_since; /* snapid when our current parent became so */ 802de57606cSSage Weil 803de57606cSSage Weil u64 *prior_parent_snaps; /* snaps inherited from any parents we */ 804aa711ee3SAlex Elder u32 num_prior_parent_snaps; /* had prior to parent_since */ 805de57606cSSage Weil u64 *snaps; /* snaps specific to this realm */ 806aa711ee3SAlex Elder u32 num_snaps; 807de57606cSSage Weil 808de57606cSSage Weil struct ceph_snap_realm *parent; 809de57606cSSage Weil struct list_head children; /* list of child realms */ 810de57606cSSage Weil struct list_head child_item; 811de57606cSSage Weil 812de57606cSSage Weil struct list_head empty_item; /* if i have ref==0 */ 813de57606cSSage Weil 814ae00d4f3SSage Weil struct list_head dirty_item; /* if realm needs new context */ 815ae00d4f3SSage Weil 816de57606cSSage Weil /* the current set of snaps for this realm */ 817de57606cSSage Weil struct ceph_snap_context *cached_context; 818de57606cSSage Weil 819de57606cSSage Weil struct list_head inodes_with_caps; 820de57606cSSage Weil spinlock_t inodes_with_caps_lock; 821de57606cSSage Weil }; 822de57606cSSage Weil 8233d14c5d2SYehuda Sadeh static inline int default_congestion_kb(void) 8243d14c5d2SYehuda Sadeh { 8253d14c5d2SYehuda Sadeh int congestion_kb; 826de57606cSSage Weil 827de57606cSSage Weil /* 8283d14c5d2SYehuda Sadeh * Copied from NFS 8293d14c5d2SYehuda Sadeh * 8303d14c5d2SYehuda Sadeh * congestion size, scale with available memory. 8313d14c5d2SYehuda Sadeh * 8323d14c5d2SYehuda Sadeh * 64MB: 8192k 8333d14c5d2SYehuda Sadeh * 128MB: 11585k 8343d14c5d2SYehuda Sadeh * 256MB: 16384k 8353d14c5d2SYehuda Sadeh * 512MB: 23170k 8363d14c5d2SYehuda Sadeh * 1GB: 32768k 8373d14c5d2SYehuda Sadeh * 2GB: 46340k 8383d14c5d2SYehuda Sadeh * 4GB: 65536k 8393d14c5d2SYehuda Sadeh * 8GB: 92681k 8403d14c5d2SYehuda Sadeh * 16GB: 131072k 8413d14c5d2SYehuda Sadeh * 8423d14c5d2SYehuda Sadeh * This allows larger machines to have larger/more transfers. 8433d14c5d2SYehuda Sadeh * Limit the default to 256M 844de57606cSSage Weil */ 845ca79b0c2SArun KS congestion_kb = (16*int_sqrt(totalram_pages())) << (PAGE_SHIFT-10); 8463d14c5d2SYehuda Sadeh if (congestion_kb > 256*1024) 8473d14c5d2SYehuda Sadeh congestion_kb = 256*1024; 8483d14c5d2SYehuda Sadeh 8493d14c5d2SYehuda Sadeh return congestion_kb; 850de57606cSSage Weil } 851de57606cSSage Weil 852de57606cSSage Weil 853d468e729SYan, Zheng /* super.c */ 854d468e729SYan, Zheng extern int ceph_force_reconnect(struct super_block *sb); 855de57606cSSage Weil /* snap.c */ 856de57606cSSage Weil struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, 857de57606cSSage Weil u64 ino); 858de57606cSSage Weil extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, 859de57606cSSage Weil struct ceph_snap_realm *realm); 860de57606cSSage Weil extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, 861de57606cSSage Weil struct ceph_snap_realm *realm); 862de57606cSSage Weil extern int ceph_update_snap_trace(struct ceph_mds_client *m, 863982d6011SYan, Zheng void *p, void *e, bool deletion, 864982d6011SYan, Zheng struct ceph_snap_realm **realm_ret); 865de57606cSSage Weil extern void ceph_handle_snap(struct ceph_mds_client *mdsc, 8662600d2ddSSage Weil struct ceph_mds_session *session, 867de57606cSSage Weil struct ceph_msg *msg); 868fc837c8fSSage Weil extern void ceph_queue_cap_snap(struct ceph_inode_info *ci); 869de57606cSSage Weil extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, 870de57606cSSage Weil struct ceph_cap_snap *capsnap); 871de57606cSSage Weil extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); 872de57606cSSage Weil 87375c9627eSYan, Zheng extern struct ceph_snapid_map *ceph_get_snapid_map(struct ceph_mds_client *mdsc, 87475c9627eSYan, Zheng u64 snap); 87575c9627eSYan, Zheng extern void ceph_put_snapid_map(struct ceph_mds_client* mdsc, 87675c9627eSYan, Zheng struct ceph_snapid_map *sm); 87775c9627eSYan, Zheng extern void ceph_trim_snapid_map(struct ceph_mds_client *mdsc); 87875c9627eSYan, Zheng extern void ceph_cleanup_snapid_map(struct ceph_mds_client *mdsc); 87975c9627eSYan, Zheng 88075c9627eSYan, Zheng 881de57606cSSage Weil /* 882de57606cSSage Weil * a cap_snap is "pending" if it is still awaiting an in-progress 883de57606cSSage Weil * sync write (that may/may not still update size, mtime, etc.). 884de57606cSSage Weil */ 885de57606cSSage Weil static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) 886de57606cSSage Weil { 887de57606cSSage Weil return !list_empty(&ci->i_cap_snaps) && 88886056090SYan, Zheng list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap, 889de57606cSSage Weil ci_item)->writing; 890de57606cSSage Weil } 891de57606cSSage Weil 892de57606cSSage Weil /* inode.c */ 893de57606cSSage Weil extern const struct inode_operations ceph_file_iops; 894de57606cSSage Weil 895de57606cSSage Weil extern struct inode *ceph_alloc_inode(struct super_block *sb); 89687bc5b89SYan, Zheng extern void ceph_evict_inode(struct inode *inode); 897cfa6d412SAl Viro extern void ceph_free_inode(struct inode *inode); 898de57606cSSage Weil 899de57606cSSage Weil extern struct inode *ceph_get_inode(struct super_block *sb, 900de57606cSSage Weil struct ceph_vino vino); 901de57606cSSage Weil extern struct inode *ceph_get_snapdir(struct inode *parent); 902de57606cSSage Weil extern int ceph_fill_file_size(struct inode *inode, int issued, 903de57606cSSage Weil u32 truncate_seq, u64 truncate_size, u64 size); 904de57606cSSage Weil extern void ceph_fill_file_time(struct inode *inode, int issued, 9059bbeab41SArnd Bergmann u64 time_warp_seq, struct timespec64 *ctime, 9069bbeab41SArnd Bergmann struct timespec64 *mtime, 9079bbeab41SArnd Bergmann struct timespec64 *atime); 908de57606cSSage Weil extern int ceph_fill_trace(struct super_block *sb, 909f5a03b08SJeff Layton struct ceph_mds_request *req); 910de57606cSSage Weil extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, 911de57606cSSage Weil struct ceph_mds_session *session); 912de57606cSSage Weil 913de57606cSSage Weil extern int ceph_inode_holds_cap(struct inode *inode, int mask); 914de57606cSSage Weil 915efb0ca76SYan, Zheng extern bool ceph_inode_set_size(struct inode *inode, loff_t size); 916b415bf4fSYan, Zheng extern void __ceph_do_pending_vmtruncate(struct inode *inode); 9173c6f6b79SSage Weil extern void ceph_queue_vmtruncate(struct inode *inode); 9183c6f6b79SSage Weil extern void ceph_queue_invalidate(struct inode *inode); 9193c6f6b79SSage Weil extern void ceph_queue_writeback(struct inode *inode); 9203e1d0452SYan, Zheng extern void ceph_async_iput(struct inode *inode); 921de57606cSSage Weil 92201deead0SYan, Zheng extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 92301deead0SYan, Zheng int mask, bool force); 92401deead0SYan, Zheng static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) 92501deead0SYan, Zheng { 92601deead0SYan, Zheng return __ceph_do_getattr(inode, NULL, mask, force); 92701deead0SYan, Zheng } 92810556cb2SAl Viro extern int ceph_permission(struct inode *inode, int mask); 929a26feccaSAndreas Gruenbacher extern int __ceph_setattr(struct inode *inode, struct iattr *attr); 930de57606cSSage Weil extern int ceph_setattr(struct dentry *dentry, struct iattr *attr); 931a528d35eSDavid Howells extern int ceph_getattr(const struct path *path, struct kstat *stat, 932a528d35eSDavid Howells u32 request_mask, unsigned int flags); 933de57606cSSage Weil 934de57606cSSage Weil /* xattr.c */ 935a26feccaSAndreas Gruenbacher int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); 9367221fe4cSGuangliang Zhao ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); 937de57606cSSage Weil extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); 93812fe3ddaSLuis Henriques extern struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci); 939de57606cSSage Weil extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); 940b1ee94aaSYan, Zheng extern const struct xattr_handler *ceph_xattr_handlers[]; 941de57606cSSage Weil 9425c31e92dSYan, Zheng struct ceph_acl_sec_ctx { 9435c31e92dSYan, Zheng #ifdef CONFIG_CEPH_FS_POSIX_ACL 9445c31e92dSYan, Zheng void *default_acl; 9455c31e92dSYan, Zheng void *acl; 9465c31e92dSYan, Zheng #endif 947ac6713ccSYan, Zheng #ifdef CONFIG_CEPH_FS_SECURITY_LABEL 948ac6713ccSYan, Zheng void *sec_ctx; 949ac6713ccSYan, Zheng u32 sec_ctxlen; 950ac6713ccSYan, Zheng #endif 9515c31e92dSYan, Zheng struct ceph_pagelist *pagelist; 9525c31e92dSYan, Zheng }; 9535c31e92dSYan, Zheng 954315f2408SYan, Zheng #ifdef CONFIG_SECURITY 955315f2408SYan, Zheng extern bool ceph_security_xattr_deadlock(struct inode *in); 956315f2408SYan, Zheng extern bool ceph_security_xattr_wanted(struct inode *in); 957315f2408SYan, Zheng #else 958315f2408SYan, Zheng static inline bool ceph_security_xattr_deadlock(struct inode *in) 959315f2408SYan, Zheng { 960315f2408SYan, Zheng return false; 961315f2408SYan, Zheng } 962315f2408SYan, Zheng static inline bool ceph_security_xattr_wanted(struct inode *in) 963315f2408SYan, Zheng { 964315f2408SYan, Zheng return false; 965315f2408SYan, Zheng } 966315f2408SYan, Zheng #endif 967315f2408SYan, Zheng 968ac6713ccSYan, Zheng #ifdef CONFIG_CEPH_FS_SECURITY_LABEL 969ac6713ccSYan, Zheng extern int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, 970ac6713ccSYan, Zheng struct ceph_acl_sec_ctx *ctx); 971ac6713ccSYan, Zheng extern void ceph_security_invalidate_secctx(struct inode *inode); 972ac6713ccSYan, Zheng #else 973ac6713ccSYan, Zheng static inline int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, 974ac6713ccSYan, Zheng struct ceph_acl_sec_ctx *ctx) 975ac6713ccSYan, Zheng { 976ac6713ccSYan, Zheng return 0; 977ac6713ccSYan, Zheng } 978ac6713ccSYan, Zheng static inline void ceph_security_invalidate_secctx(struct inode *inode) 979ac6713ccSYan, Zheng { 980ac6713ccSYan, Zheng } 981ac6713ccSYan, Zheng #endif 9827221fe4cSGuangliang Zhao 9835c31e92dSYan, Zheng void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx); 9847221fe4cSGuangliang Zhao 9855c31e92dSYan, Zheng /* acl.c */ 9867221fe4cSGuangliang Zhao #ifdef CONFIG_CEPH_FS_POSIX_ACL 9877221fe4cSGuangliang Zhao 9887221fe4cSGuangliang Zhao struct posix_acl *ceph_get_acl(struct inode *, int); 98972466d0bSSage Weil int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type); 990b1ee94aaSYan, Zheng int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 9915c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx); 9925c31e92dSYan, Zheng void ceph_init_inode_acls(struct inode *inode, 9935c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx); 994c969d9bfSGuangliang Zhao 995c969d9bfSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 996c969d9bfSGuangliang Zhao { 997c969d9bfSGuangliang Zhao forget_all_cached_acls(inode); 998c969d9bfSGuangliang Zhao } 9997221fe4cSGuangliang Zhao 10007221fe4cSGuangliang Zhao #else 10017221fe4cSGuangliang Zhao 10027221fe4cSGuangliang Zhao #define ceph_get_acl NULL 100372466d0bSSage Weil #define ceph_set_acl NULL 10047221fe4cSGuangliang Zhao 1005b1ee94aaSYan, Zheng static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 10065c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx) 10077221fe4cSGuangliang Zhao { 10087221fe4cSGuangliang Zhao return 0; 10097221fe4cSGuangliang Zhao } 1010b1ee94aaSYan, Zheng static inline void ceph_init_inode_acls(struct inode *inode, 10115c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx) 1012b1ee94aaSYan, Zheng { 1013b1ee94aaSYan, Zheng } 10147221fe4cSGuangliang Zhao static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) 10157221fe4cSGuangliang Zhao { 10167221fe4cSGuangliang Zhao return 0; 10177221fe4cSGuangliang Zhao } 10187221fe4cSGuangliang Zhao 10197221fe4cSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 10207221fe4cSGuangliang Zhao { 10217221fe4cSGuangliang Zhao } 10227221fe4cSGuangliang Zhao 10237221fe4cSGuangliang Zhao #endif 10247221fe4cSGuangliang Zhao 1025de57606cSSage Weil /* caps.c */ 1026de57606cSSage Weil extern const char *ceph_cap_string(int c); 1027de57606cSSage Weil extern void ceph_handle_caps(struct ceph_mds_session *session, 1028de57606cSSage Weil struct ceph_msg *msg); 1029d9df2783SYan, Zheng extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, 1030d9df2783SYan, Zheng struct ceph_cap_reservation *ctx); 1031d9df2783SYan, Zheng extern void ceph_add_cap(struct inode *inode, 1032de57606cSSage Weil struct ceph_mds_session *session, u64 cap_id, 1033de57606cSSage Weil int fmode, unsigned issued, unsigned wanted, 1034de57606cSSage Weil unsigned cap, unsigned seq, u64 realmino, int flags, 1035d9df2783SYan, Zheng struct ceph_cap **new_cap); 1036a096b09aSYan, Zheng extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); 1037d6e47819SYan, Zheng extern void __ceph_remove_caps(struct ceph_inode_info *ci); 103837151668SYehuda Sadeh extern void ceph_put_cap(struct ceph_mds_client *mdsc, 103937151668SYehuda Sadeh struct ceph_cap *cap); 10409215aeeaSYan, Zheng extern int ceph_is_any_caps(struct inode *inode); 1041de57606cSSage Weil 1042f1a3d572SStephen Rothwell extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); 104302c24a82SJosef Bacik extern int ceph_fsync(struct file *file, loff_t start, loff_t end, 104402c24a82SJosef Bacik int datasync); 1045e548e9b9SYan, Zheng extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, 1046e548e9b9SYan, Zheng struct ceph_mds_session *session); 1047de57606cSSage Weil extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, 1048de57606cSSage Weil struct ceph_mds_session *session); 10492bc50259SGreg Farnum extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, 10502bc50259SGreg Farnum int mds); 1051de57606cSSage Weil extern int ceph_get_cap_mds(struct inode *inode); 1052de57606cSSage Weil extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); 1053de57606cSSage Weil extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); 1054de57606cSSage Weil extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, 1055de57606cSSage Weil struct ceph_snap_context *snapc); 1056ed9b430cSYan, Zheng extern void ceph_flush_snaps(struct ceph_inode_info *ci, 10570e294387SYan, Zheng struct ceph_mds_session **psession); 1058efb0ca76SYan, Zheng extern bool __ceph_should_report_size(struct ceph_inode_info *ci); 1059de57606cSSage Weil extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, 1060de57606cSSage Weil struct ceph_mds_session *session); 1061afcdaea3SSage Weil extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc); 1062afcdaea3SSage Weil extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); 10636ef0bc6dSZhi Zhang extern int ceph_drop_caps_for_unlink(struct inode *inode); 1064de57606cSSage Weil extern int ceph_encode_inode_release(void **p, struct inode *inode, 1065de57606cSSage Weil int mds, int drop, int unless, int force); 1066de57606cSSage Weil extern int ceph_encode_dentry_release(void **p, struct dentry *dn, 1067ca6c8ae0SJeff Layton struct inode *dir, 1068de57606cSSage Weil int mds, int drop, int unless); 1069de57606cSSage Weil 10705e3ded1bSYan, Zheng extern int ceph_get_caps(struct file *filp, int need, int want, 107131c542a1SYan, Zheng loff_t endoff, int *got, struct page **pinned_page); 10725e3ded1bSYan, Zheng extern int ceph_try_get_caps(struct inode *inode, 10732ee9dd95SLuis Henriques int need, int want, bool nonblock, int *got); 1074de57606cSSage Weil 1075de57606cSSage Weil /* for counting open files by mode */ 1076774a6a11SYan, Zheng extern void __ceph_get_fmode(struct ceph_inode_info *ci, int mode); 1077de57606cSSage Weil extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode); 1078de57606cSSage Weil 1079de57606cSSage Weil /* addr.c */ 1080de57606cSSage Weil extern const struct address_space_operations ceph_aops; 1081de57606cSSage Weil extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); 108210183a69SYan, Zheng extern int ceph_uninline_data(struct file *filp, struct page *locked_page); 10835e3ded1bSYan, Zheng extern int ceph_pool_perm_check(struct inode *inode, int need); 108410183a69SYan, Zheng extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); 1085de57606cSSage Weil 1086de57606cSSage Weil /* file.c */ 1087de57606cSSage Weil extern const struct file_operations ceph_file_fops; 10889e0eb85dSAlex Elder 108977310320SYan, Zheng extern int ceph_renew_caps(struct inode *inode); 1090de57606cSSage Weil extern int ceph_open(struct inode *inode, struct file *file); 10915ef50c3bSSage Weil extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, 109244907d79SAl Viro struct file *file, unsigned flags, umode_t mode); 1093de57606cSSage Weil extern int ceph_release(struct inode *inode, struct file *filp); 109431c542a1SYan, Zheng extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, 109531c542a1SYan, Zheng char *data, size_t len); 109655f2a045SIlya Dryomov 1097de57606cSSage Weil /* dir.c */ 1098de57606cSSage Weil extern const struct file_operations ceph_dir_fops; 109938c48b5fSYan, Zheng extern const struct file_operations ceph_snapdir_fops; 1100de57606cSSage Weil extern const struct inode_operations ceph_dir_iops; 110138c48b5fSYan, Zheng extern const struct inode_operations ceph_snapdir_iops; 110218fc8abdSAl Viro extern const struct dentry_operations ceph_dentry_ops; 1103de57606cSSage Weil 1104f3c4ebe6SYan, Zheng extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order); 1105de57606cSSage Weil extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); 1106468640e3SSage Weil extern int ceph_handle_snapdir(struct ceph_mds_request *req, 1107468640e3SSage Weil struct dentry *dentry, int err); 1108de57606cSSage Weil extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, 1109de57606cSSage Weil struct dentry *dentry, int err); 1110de57606cSSage Weil 111137c4efc1SYan, Zheng extern void __ceph_dentry_lease_touch(struct ceph_dentry_info *di); 111237c4efc1SYan, Zheng extern void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di); 111381a6cf2dSSage Weil extern void ceph_invalidate_dentry_lease(struct dentry *dentry); 111437c4efc1SYan, Zheng extern int ceph_trim_dentries(struct ceph_mds_client *mdsc); 1115e5f86dc3SSage Weil extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); 1116fdd4e158SYan, Zheng extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl); 1117de57606cSSage Weil 1118de57606cSSage Weil /* ioctl.c */ 1119de57606cSSage Weil extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 1120de57606cSSage Weil 1121de57606cSSage Weil /* export.c */ 1122de57606cSSage Weil extern const struct export_operations ceph_export_ops; 11233886274aSLuis Henriques struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino); 1124de57606cSSage Weil 112540819f6fSGreg Farnum /* locks.c */ 1126eb13e832SYan, Zheng extern __init void ceph_flock_init(void); 112740819f6fSGreg Farnum extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); 112840819f6fSGreg Farnum extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); 112940819f6fSGreg Farnum extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); 113039be95e9SJim Schutt extern int ceph_encode_locks_to_buffer(struct inode *inode, 113139be95e9SJim Schutt struct ceph_filelock *flocks, 113239be95e9SJim Schutt int num_fcntl_locks, 113339be95e9SJim Schutt int num_flock_locks); 113439be95e9SJim Schutt extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, 113539be95e9SJim Schutt struct ceph_pagelist *pagelist, 113639be95e9SJim Schutt int num_fcntl_locks, int num_flock_locks); 113740819f6fSGreg Farnum 11383d14c5d2SYehuda Sadeh /* debugfs.c */ 11391a829ff2SGreg Kroah-Hartman extern void ceph_fs_debugfs_init(struct ceph_fs_client *client); 11403d14c5d2SYehuda Sadeh extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); 11413d14c5d2SYehuda Sadeh 1142fb18a575SLuis Henriques /* quota.c */ 1143d557c48dSLuis Henriques static inline bool __ceph_has_any_quota(struct ceph_inode_info *ci) 1144d557c48dSLuis Henriques { 1145d557c48dSLuis Henriques return ci->i_max_files || ci->i_max_bytes; 1146d557c48dSLuis Henriques } 1147d557c48dSLuis Henriques 1148d557c48dSLuis Henriques extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc); 1149d557c48dSLuis Henriques 1150d557c48dSLuis Henriques static inline void __ceph_update_quota(struct ceph_inode_info *ci, 1151d557c48dSLuis Henriques u64 max_bytes, u64 max_files) 1152d557c48dSLuis Henriques { 1153d557c48dSLuis Henriques bool had_quota, has_quota; 1154d557c48dSLuis Henriques had_quota = __ceph_has_any_quota(ci); 1155d557c48dSLuis Henriques ci->i_max_bytes = max_bytes; 1156d557c48dSLuis Henriques ci->i_max_files = max_files; 1157d557c48dSLuis Henriques has_quota = __ceph_has_any_quota(ci); 1158d557c48dSLuis Henriques 1159d557c48dSLuis Henriques if (had_quota != has_quota) 1160d557c48dSLuis Henriques ceph_adjust_quota_realms_count(&ci->vfs_inode, has_quota); 1161d557c48dSLuis Henriques } 1162d557c48dSLuis Henriques 1163fb18a575SLuis Henriques extern void ceph_handle_quota(struct ceph_mds_client *mdsc, 1164fb18a575SLuis Henriques struct ceph_mds_session *session, 1165fb18a575SLuis Henriques struct ceph_msg *msg); 1166b7a29217SLuis Henriques extern bool ceph_quota_is_max_files_exceeded(struct inode *inode); 1167cafe21a4SLuis Henriques extern bool ceph_quota_is_same_realm(struct inode *old, struct inode *new); 11682b83845fSLuis Henriques extern bool ceph_quota_is_max_bytes_exceeded(struct inode *inode, 11692b83845fSLuis Henriques loff_t newlen); 11701ab302a0SLuis Henriques extern bool ceph_quota_is_max_bytes_approaching(struct inode *inode, 11711ab302a0SLuis Henriques loff_t newlen); 11729122eed5SLuis Henriques extern bool ceph_quota_update_statfs(struct ceph_fs_client *fsc, 11739122eed5SLuis Henriques struct kstatfs *buf); 11740c44a8e0SLuis Henriques extern void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc); 1175fb18a575SLuis Henriques 1176de57606cSSage Weil #endif /* _FS_CEPH_SUPER_H */ 1177