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> 19668959a5SJeff Layton #include <linux/security.h> 20de57606cSSage Weil 213d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 22de57606cSSage Weil 2399ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 2499ccbd22SMilosz Tanski #include <linux/fscache.h> 2599ccbd22SMilosz Tanski #endif 2699ccbd22SMilosz Tanski 27de57606cSSage Weil /* f_type in struct statfs */ 28de57606cSSage Weil #define CEPH_SUPER_MAGIC 0x00c36400 29de57606cSSage Weil 30de57606cSSage Weil /* large granularity for statfs utilization stats to facilitate 31de57606cSSage Weil * large volume sizes on 32-bit machines. */ 3292a49fb0SSage Weil #define CEPH_BLOCK_SHIFT 22 /* 4 MB */ 33de57606cSSage Weil #define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) 34de57606cSSage Weil 35131d7eb4SYan, Zheng #define CEPH_MOUNT_OPT_CLEANRECOVER (1<<1) /* auto reonnect (clean mode) after blacklisted */ 363d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ 373d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ 383d14c5d2SYehuda Sadeh #define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ 39ad1fee96SYehuda Sadeh #define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ 40a40dc6ccSSage Weil #define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ 4199ccbd22SMilosz Tanski #define CEPH_MOUNT_OPT_FSCACHE (1<<10) /* use fscache */ 4210183a69SYan, Zheng #define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11) /* no pool permission check */ 43e9e427f0SYan, Zheng #define CEPH_MOUNT_OPT_MOUNTWAIT (1<<12) /* mount waits if no mds is up */ 449122eed5SLuis Henriques #define CEPH_MOUNT_OPT_NOQUOTADF (1<<13) /* no root dir quota in statfs */ 45ea4cdc54SLuis Henriques #define CEPH_MOUNT_OPT_NOCOPYFROM (1<<14) /* don't use RADOS 'copy-from' op */ 462ccb4546SJeff Layton #define CEPH_MOUNT_OPT_ASYNC_DIROPS (1<<15) /* allow async directory ops */ 476a259382SSage Weil 486f9718feSLuis Henriques #define CEPH_MOUNT_OPT_DEFAULT \ 496f9718feSLuis Henriques (CEPH_MOUNT_OPT_DCACHE | \ 506f9718feSLuis Henriques CEPH_MOUNT_OPT_NOCOPYFROM) 51de57606cSSage Weil 523d14c5d2SYehuda Sadeh #define ceph_set_mount_opt(fsc, opt) \ 532ccb4546SJeff Layton (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt 542ccb4546SJeff Layton #define ceph_clear_mount_opt(fsc, opt) \ 552ccb4546SJeff Layton (fsc)->mount_options->flags &= ~CEPH_MOUNT_OPT_##opt 563d14c5d2SYehuda Sadeh #define ceph_test_mount_opt(fsc, opt) \ 573d14c5d2SYehuda Sadeh (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) 58de57606cSSage Weil 59aa187926SYan, Zheng /* max size of osd read request, limited by libceph */ 60aa187926SYan, Zheng #define CEPH_MAX_READ_SIZE CEPH_MSG_MAX_DATA_LEN 6195cca2b4SYan, Zheng /* osd has a configurable limitaion of max write size. 6295cca2b4SYan, Zheng * CEPH_MSG_MAX_DATA_LEN should be small enough. */ 6395cca2b4SYan, Zheng #define CEPH_MAX_WRITE_SIZE CEPH_MSG_MAX_DATA_LEN 647c94ba27SAndreas Gerstmayr #define CEPH_RASIZE_DEFAULT (8192*1024) /* max readahead */ 653d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_DEFAULT 1024 663d14c5d2SYehuda Sadeh #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) 673d14c5d2SYehuda Sadeh #define CEPH_SNAPDIRNAME_DEFAULT ".snap" 68de57606cSSage Weil 694214fb15SYan, Zheng /* 704214fb15SYan, Zheng * Delay telling the MDS we no longer want caps, in case we reopen 714214fb15SYan, Zheng * the file. Delay a minimum amount of time, even if we send a cap 724214fb15SYan, Zheng * message for some other reason. Otherwise, take the oppotunity to 734214fb15SYan, Zheng * update the mds to avoid sending another message later. 744214fb15SYan, Zheng */ 754214fb15SYan, Zheng #define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */ 764214fb15SYan, Zheng #define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */ 774214fb15SYan, Zheng 783d14c5d2SYehuda Sadeh struct ceph_mount_options { 79ad8c28a9SJeff Layton unsigned int flags; 803d14c5d2SYehuda Sadeh 81ad8c28a9SJeff Layton unsigned int wsize; /* max write size */ 82ad8c28a9SJeff Layton unsigned int rsize; /* max read size */ 83ad8c28a9SJeff Layton unsigned int rasize; /* max readahead */ 84ad8c28a9SJeff Layton unsigned int congestion_kb; /* max writeback in flight */ 85ad8c28a9SJeff Layton unsigned int caps_wanted_delay_min, caps_wanted_delay_max; 86fe33032dSYan, Zheng int caps_max; 87ad8c28a9SJeff Layton unsigned int max_readdir; /* max readdir result (entries) */ 88ad8c28a9SJeff Layton unsigned int max_readdir_bytes; /* max readdir result (bytes) */ 893d14c5d2SYehuda Sadeh 903d14c5d2SYehuda Sadeh /* 913d14c5d2SYehuda Sadeh * everything above this point can be memcmp'd; everything below 923d14c5d2SYehuda Sadeh * is handled in compare_mount_options() 933d14c5d2SYehuda Sadeh */ 943d14c5d2SYehuda Sadeh 95de57606cSSage Weil char *snapdir_name; /* default ".snap" */ 96430afbadSYan, Zheng char *mds_namespace; /* default NULL */ 97b27a939eSIlya Dryomov char *server_path; /* default NULL (means "/") */ 981d8f8360SYan, Zheng char *fscache_uniq; /* default NULL */ 99de57606cSSage Weil }; 100de57606cSSage Weil 1013d14c5d2SYehuda Sadeh struct ceph_fs_client { 102de57606cSSage Weil struct super_block *sb; 103de57606cSSage Weil 1043d14c5d2SYehuda Sadeh struct ceph_mount_options *mount_options; 1053d14c5d2SYehuda Sadeh struct ceph_client *client; 1063d14c5d2SYehuda Sadeh 107de57606cSSage Weil unsigned long mount_state; 10881f148a9SYan, Zheng 109131d7eb4SYan, Zheng unsigned long last_auto_reconnect; 110131d7eb4SYan, Zheng bool blacklisted; 111131d7eb4SYan, Zheng 11278beb0ffSLuis Henriques bool have_copy_from2; 11378beb0ffSLuis Henriques 11481f148a9SYan, Zheng u32 filp_gen; 115719784baSChengguang Xu loff_t max_file_size; 11685ccce43SSage Weil 1173d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc; 118de57606cSSage Weil 119de57606cSSage Weil /* writeback */ 120de57606cSSage Weil mempool_t *wb_pagevec_pool; 121e3ec8d68SYan, Zheng atomic_long_t writeback_count; 122e3ec8d68SYan, Zheng 1231cf89a8dSYan, Zheng struct workqueue_struct *inode_wq; 124e3ec8d68SYan, Zheng struct workqueue_struct *cap_wq; 125de57606cSSage Weil 1260743304dSSage Weil #ifdef CONFIG_DEBUG_FS 1273d14c5d2SYehuda Sadeh struct dentry *debugfs_dentry_lru, *debugfs_caps; 1282baba250SYehuda Sadeh struct dentry *debugfs_congestion_kb; 12906edf046SSage Weil struct dentry *debugfs_bdi; 1303d14c5d2SYehuda Sadeh struct dentry *debugfs_mdsc, *debugfs_mdsmap; 131f9009efaSXiubo Li struct dentry *debugfs_metric; 13214ed9703SJohn Spray struct dentry *debugfs_mds_sessions; 1330743304dSSage Weil #endif 13499ccbd22SMilosz Tanski 13599ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 13699ccbd22SMilosz Tanski struct fscache_cookie *fscache; 13799ccbd22SMilosz Tanski #endif 138de57606cSSage Weil }; 139de57606cSSage Weil 1403d14c5d2SYehuda Sadeh 141de57606cSSage Weil /* 142de57606cSSage Weil * File i/o capability. This tracks shared state with the metadata 143de57606cSSage Weil * server that allows us to cache or writeback attributes or to read 144de57606cSSage Weil * and write data. For any given inode, we should have one or more 145de57606cSSage Weil * capabilities, one issued by each metadata server, and our 146de57606cSSage Weil * cumulative access is the OR of all issued capabilities. 147de57606cSSage Weil * 148de57606cSSage Weil * Each cap is referenced by the inode's i_caps rbtree and by per-mds 149de57606cSSage Weil * session capability lists. 150de57606cSSage Weil */ 151de57606cSSage Weil struct ceph_cap { 152de57606cSSage Weil struct ceph_inode_info *ci; 153de57606cSSage Weil struct rb_node ci_node; /* per-ci cap tree */ 154de57606cSSage Weil struct ceph_mds_session *session; 155de57606cSSage Weil struct list_head session_caps; /* per-session caplist */ 156de57606cSSage Weil u64 cap_id; /* unique cap id (mds provided) */ 157745a8e3bSYan, Zheng union { 158745a8e3bSYan, Zheng /* in-use caps */ 159745a8e3bSYan, Zheng struct { 160de57606cSSage Weil int issued; /* latest, from the mds */ 161745a8e3bSYan, Zheng int implemented; /* implemented superset of 162745a8e3bSYan, Zheng issued (for revocation) */ 163745a8e3bSYan, Zheng int mds, mds_wanted; 164745a8e3bSYan, Zheng }; 165745a8e3bSYan, Zheng /* caps to release */ 166745a8e3bSYan, Zheng struct { 167745a8e3bSYan, Zheng u64 cap_ino; 168745a8e3bSYan, Zheng int queue_release; 169745a8e3bSYan, Zheng }; 170745a8e3bSYan, Zheng }; 171685f9a5dSSage Weil u32 seq, issue_seq, mseq; 172685f9a5dSSage Weil u32 cap_gen; /* active/stale cycle */ 173de57606cSSage Weil unsigned long last_used; 174de57606cSSage Weil struct list_head caps_item; 175de57606cSSage Weil }; 176de57606cSSage Weil 177a0d93e32SYan, Zheng #define CHECK_CAPS_AUTHONLY 1 /* only check auth cap */ 178a0d93e32SYan, Zheng #define CHECK_CAPS_FLUSH 2 /* flush any dirty caps */ 179a0d93e32SYan, Zheng #define CHECK_CAPS_NOINVAL 4 /* don't invalidate pagecache */ 180de57606cSSage Weil 1810e294387SYan, Zheng struct ceph_cap_flush { 1820e294387SYan, Zheng u64 tid; 1830e294387SYan, Zheng int caps; /* 0 means capsnap */ 184c8799fc4SYan, Zheng bool wake; /* wake up flush waiters when finish ? */ 1850e294387SYan, Zheng struct list_head g_list; // global 1860e294387SYan, Zheng struct list_head i_list; // per inode 1870e294387SYan, Zheng }; 1880e294387SYan, Zheng 189de57606cSSage Weil /* 190de57606cSSage Weil * Snapped cap state that is pending flush to mds. When a snapshot occurs, 191de57606cSSage Weil * we first complete any in-process sync writes and writeback any dirty 192de57606cSSage Weil * data before flushing the snapped state (tracked here) back to the MDS. 193de57606cSSage Weil */ 194de57606cSSage Weil struct ceph_cap_snap { 195805692d0SElena Reshetova refcount_t nref; 1960e294387SYan, Zheng struct list_head ci_item; 197de57606cSSage Weil 1980e294387SYan, Zheng struct ceph_cap_flush cap_flush; 1990e294387SYan, Zheng 2000e294387SYan, Zheng u64 follows; 201de57606cSSage Weil int issued, dirty; 202de57606cSSage Weil struct ceph_snap_context *context; 203de57606cSSage Weil 2045706b27dSAl Viro umode_t mode; 20505cb11c1SEric W. Biederman kuid_t uid; 20605cb11c1SEric W. Biederman kgid_t gid; 207de57606cSSage Weil 2084a625be4SSage Weil struct ceph_buffer *xattr_blob; 209de57606cSSage Weil u64 xattr_version; 210de57606cSSage Weil 211de57606cSSage Weil u64 size; 212176c77c9SJeff Layton u64 change_attr; 213ec62b894SJeff Layton struct timespec64 mtime, atime, ctime, btime; 214de57606cSSage Weil u64 time_warp_seq; 2155f743e45SYan, Zheng u64 truncate_size; 2165f743e45SYan, Zheng u32 truncate_seq; 217de57606cSSage Weil int writing; /* a sync write is still in progress */ 218de57606cSSage Weil int dirty_pages; /* dirty pages awaiting writeback */ 219e20d258dSYan, Zheng bool inline_data; 22086056090SYan, Zheng bool need_flush; 221de57606cSSage Weil }; 222de57606cSSage Weil 223de57606cSSage Weil static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) 224de57606cSSage Weil { 225805692d0SElena Reshetova if (refcount_dec_and_test(&capsnap->nref)) { 2264a625be4SSage Weil if (capsnap->xattr_blob) 2274a625be4SSage Weil ceph_buffer_put(capsnap->xattr_blob); 228de57606cSSage Weil kfree(capsnap); 229de57606cSSage Weil } 2304a625be4SSage Weil } 231de57606cSSage Weil 232de57606cSSage Weil /* 233de57606cSSage Weil * The frag tree describes how a directory is fragmented, potentially across 234de57606cSSage Weil * multiple metadata servers. It is also used to indicate points where 235de57606cSSage Weil * metadata authority is delegated, and whether/where metadata is replicated. 236de57606cSSage Weil * 237de57606cSSage Weil * A _leaf_ frag will be present in the i_fragtree IFF there is 238de57606cSSage Weil * delegation info. That is, if mds >= 0 || ndist > 0. 239de57606cSSage Weil */ 240de57606cSSage Weil #define CEPH_MAX_DIRFRAG_REP 4 241de57606cSSage Weil 242de57606cSSage Weil struct ceph_inode_frag { 243de57606cSSage Weil struct rb_node node; 244de57606cSSage Weil 245de57606cSSage Weil /* fragtree state */ 246de57606cSSage Weil u32 frag; 247de57606cSSage Weil int split_by; /* i.e. 2^(split_by) children */ 248de57606cSSage Weil 249de57606cSSage Weil /* delegation and replication info */ 250de57606cSSage Weil int mds; /* -1 if same authority as parent */ 251de57606cSSage Weil int ndist; /* >0 if replicated */ 252de57606cSSage Weil int dist[CEPH_MAX_DIRFRAG_REP]; 253de57606cSSage Weil }; 254de57606cSSage Weil 255de57606cSSage Weil /* 256de57606cSSage Weil * We cache inode xattrs as an encoded blob until they are first used, 257de57606cSSage Weil * at which point we parse them into an rbtree. 258de57606cSSage Weil */ 259de57606cSSage Weil struct ceph_inode_xattr { 260de57606cSSage Weil struct rb_node node; 261de57606cSSage Weil 262de57606cSSage Weil const char *name; 263de57606cSSage Weil int name_len; 264de57606cSSage Weil const char *val; 265de57606cSSage Weil int val_len; 266de57606cSSage Weil int dirty; 267de57606cSSage Weil 268de57606cSSage Weil int should_free_name; 269de57606cSSage Weil int should_free_val; 270de57606cSSage Weil }; 271de57606cSSage Weil 2723d14c5d2SYehuda Sadeh /* 2733d14c5d2SYehuda Sadeh * Ceph dentry state 2743d14c5d2SYehuda Sadeh */ 2753d14c5d2SYehuda Sadeh struct ceph_dentry_info { 27637c4efc1SYan, Zheng struct dentry *dentry; 2773d14c5d2SYehuda Sadeh struct ceph_mds_session *lease_session; 27837c4efc1SYan, Zheng struct list_head lease_list; 27937c4efc1SYan, Zheng unsigned flags; 28097aeb6bfSYan, Zheng int lease_shared_gen; 28197aeb6bfSYan, Zheng u32 lease_gen; 2823d14c5d2SYehuda Sadeh u32 lease_seq; 2833d14c5d2SYehuda Sadeh unsigned long lease_renew_after, lease_renew_from; 2849b16f03cSMiklos Szeredi unsigned long time; 2853d14c5d2SYehuda Sadeh u64 offset; 2863d14c5d2SYehuda Sadeh }; 2873d14c5d2SYehuda Sadeh 28837c4efc1SYan, Zheng #define CEPH_DENTRY_REFERENCED 1 28937c4efc1SYan, Zheng #define CEPH_DENTRY_LEASE_LIST 2 29037c4efc1SYan, Zheng #define CEPH_DENTRY_SHRINK_LIST 4 291f5e17aedSJeff Layton #define CEPH_DENTRY_PRIMARY_LINK 8 29237c4efc1SYan, Zheng 293de57606cSSage Weil struct ceph_inode_xattrs_info { 294de57606cSSage Weil /* 295de57606cSSage Weil * (still encoded) xattr blob. we avoid the overhead of parsing 296de57606cSSage Weil * this until someone actually calls getxattr, etc. 297de57606cSSage Weil * 298de57606cSSage Weil * blob->vec.iov_len == 4 implies there are no xattrs; blob == 299de57606cSSage Weil * NULL means we don't know. 300de57606cSSage Weil */ 301de57606cSSage Weil struct ceph_buffer *blob, *prealloc_blob; 302de57606cSSage Weil 303de57606cSSage Weil struct rb_root index; 304de57606cSSage Weil bool dirty; 305de57606cSSage Weil int count; 306de57606cSSage Weil int names_size; 307de57606cSSage Weil int vals_size; 308de57606cSSage Weil u64 version, index_version; 309de57606cSSage Weil }; 310de57606cSSage Weil 311de57606cSSage Weil /* 312de57606cSSage Weil * Ceph inode. 313de57606cSSage Weil */ 314de57606cSSage Weil struct ceph_inode_info { 315de57606cSSage Weil struct ceph_vino i_vino; /* ceph ino + snap */ 316de57606cSSage Weil 317be655596SSage Weil spinlock_t i_ceph_lock; 318be655596SSage Weil 319de57606cSSage Weil u64 i_version; 32031c542a1SYan, Zheng u64 i_inline_version; 321de57606cSSage Weil u32 i_time_warp_seq; 322de57606cSSage Weil 323891f3f5aSJeff Layton unsigned long i_ceph_flags; 324fdd4e158SYan, Zheng atomic64_t i_release_count; 325fdd4e158SYan, Zheng atomic64_t i_ordered_count; 326fdd4e158SYan, Zheng atomic64_t i_complete_seq[2]; 327de57606cSSage Weil 3286c0f3af7SSage Weil struct ceph_dir_layout i_dir_layout; 329de57606cSSage Weil struct ceph_file_layout i_layout; 330785892feSJeff Layton struct ceph_file_layout i_cached_layout; // for async creates 331de57606cSSage Weil char *i_symlink; 332de57606cSSage Weil 333de57606cSSage Weil /* for dirs */ 3349bbeab41SArnd Bergmann struct timespec64 i_rctime; 335de57606cSSage Weil u64 i_rbytes, i_rfiles, i_rsubdirs; 336de57606cSSage Weil u64 i_files, i_subdirs; 337de57606cSSage Weil 338fb18a575SLuis Henriques /* quotas */ 339fb18a575SLuis Henriques u64 i_max_bytes, i_max_files; 340fb18a575SLuis Henriques 34108796873SYan, Zheng s32 i_dir_pin; 34208796873SYan, Zheng 343de57606cSSage Weil struct rb_root i_fragtree; 3441b1bc16dSYan, Zheng int i_fragtree_nsplits; 345de57606cSSage Weil struct mutex i_fragtree_mutex; 346de57606cSSage Weil 347de57606cSSage Weil struct ceph_inode_xattrs_info i_xattrs; 348de57606cSSage Weil 349be655596SSage Weil /* capabilities. protected _both_ by i_ceph_lock and cap->session's 350de57606cSSage Weil * s_mutex. */ 351de57606cSSage Weil struct rb_root i_caps; /* cap list */ 352de57606cSSage Weil struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ 353de57606cSSage Weil unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ 354*1cf03a68SJeff Layton 355*1cf03a68SJeff Layton /* 356*1cf03a68SJeff Layton * Link to the the auth cap's session's s_cap_dirty list. s_cap_dirty 357*1cf03a68SJeff Layton * is protected by the mdsc->cap_dirty_lock, but each individual item 358*1cf03a68SJeff Layton * is also protected by the inode's i_ceph_lock. Walking s_cap_dirty 359*1cf03a68SJeff Layton * requires the mdsc->cap_dirty_lock. List presence for an item can 360*1cf03a68SJeff Layton * be tested under the i_ceph_lock. Changing anything requires both. 3614fb5dda3SJeff Layton */ 362*1cf03a68SJeff Layton struct list_head i_dirty_item; 363*1cf03a68SJeff Layton 364*1cf03a68SJeff Layton /* 365*1cf03a68SJeff Layton * Link to session's s_cap_flushing list. Protected by 366*1cf03a68SJeff Layton * mdsc->cap_dirty_lock. 367*1cf03a68SJeff Layton */ 368*1cf03a68SJeff Layton struct list_head i_flushing_item; 369*1cf03a68SJeff Layton 370de57606cSSage Weil /* we need to track cap writeback on a per-cap-bit basis, to allow 371de57606cSSage Weil * overlapping, pipelined cap flushes to the mds. we can probably 372de57606cSSage Weil * reduce the tid to 8 bits if we're concerned about inode size. */ 373f66fd9f0SYan, Zheng struct ceph_cap_flush *i_prealloc_cap_flush; 374e4500b5eSYan, Zheng struct list_head i_cap_flush_list; 375de57606cSSage Weil wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ 376de57606cSSage Weil unsigned long i_hold_caps_max; /* jiffies */ 377de57606cSSage Weil struct list_head i_cap_delay_list; /* for delayed cap release to mds */ 378de57606cSSage Weil struct ceph_cap_reservation i_cap_migration_resv; 379de57606cSSage Weil struct list_head i_cap_snaps; /* snapped state pending flush to mds */ 3807d8cb26dSSage Weil struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or 3817d8cb26dSSage Weil dirty|flushing caps */ 382de57606cSSage Weil unsigned i_snap_caps; /* cap bits for snapped files */ 383de57606cSSage Weil 384719a2514SYan, Zheng unsigned long i_last_rd; 385719a2514SYan, Zheng unsigned long i_last_wr; 386774a6a11SYan, Zheng int i_nr_by_mode[CEPH_FILE_MODE_BITS]; /* open file counts */ 387de57606cSSage Weil 388b0d7c223SYan, Zheng struct mutex i_truncate_mutex; 389de57606cSSage Weil u32 i_truncate_seq; /* last truncate to smaller size */ 390de57606cSSage Weil u64 i_truncate_size; /* and the size we last truncated down to */ 391de57606cSSage Weil int i_truncate_pending; /* still need to call vmtruncate */ 392de57606cSSage Weil 393de57606cSSage Weil u64 i_max_size; /* max file size authorized by mds */ 394de57606cSSage Weil u64 i_reported_size; /* (max_)size reported to or requested of mds */ 395de57606cSSage Weil u64 i_wanted_max_size; /* offset we'd like to write too */ 396de57606cSSage Weil u64 i_requested_max_size; /* max_size we've requested */ 397de57606cSSage Weil 398de57606cSSage Weil /* held references to caps */ 399de57606cSSage Weil int i_pin_ref; 400f85122afSJeff Layton int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref, i_fx_ref; 401de57606cSSage Weil int i_wrbuffer_ref, i_wrbuffer_ref_head; 40289aa5930SYan, Zheng atomic_t i_filelock_ref; 40397aeb6bfSYan, Zheng atomic_t i_shared_gen; /* increment each time we get FILE_SHARED */ 404cd045cb4SSage Weil u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ 405de57606cSSage Weil u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ 406de57606cSSage Weil 407de57606cSSage Weil struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ 40868cd5b4bSYan, Zheng struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ 409de57606cSSage Weil spinlock_t i_unsafe_lock; 410de57606cSSage Weil 41175c9627eSYan, Zheng union { 412de57606cSSage Weil struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ 41375c9627eSYan, Zheng struct ceph_snapid_map *i_snapid_map; /* snapid -> dev_t */ 41475c9627eSYan, Zheng }; 415de57606cSSage Weil int i_snap_realm_counter; /* snap realm (if caps) */ 416de57606cSSage Weil struct list_head i_snap_realm_item; 417de57606cSSage Weil struct list_head i_snap_flush_item; 418245ce991SJeff Layton struct timespec64 i_btime; 419193e7b37SDavid Disseldorp struct timespec64 i_snap_btime; 420de57606cSSage Weil 4211cf89a8dSYan, Zheng struct work_struct i_work; 4221cf89a8dSYan, Zheng unsigned long i_work_mask; 423de57606cSSage Weil 42499ccbd22SMilosz Tanski #ifdef CONFIG_CEPH_FSCACHE 42599ccbd22SMilosz Tanski struct fscache_cookie *fscache; 426f7f7e7a0SYan, Zheng u32 i_fscache_gen; 42799ccbd22SMilosz Tanski #endif 428f4b97866SYan, Zheng errseq_t i_meta_err; 429f4b97866SYan, Zheng 430de57606cSSage Weil struct inode vfs_inode; /* at end */ 431de57606cSSage Weil }; 432de57606cSSage Weil 433721d5c13SJeff Layton static inline struct ceph_inode_info * 434721d5c13SJeff Layton ceph_inode(const struct inode *inode) 435de57606cSSage Weil { 436fbbccec9SNoah Watkins return container_of(inode, struct ceph_inode_info, vfs_inode); 437de57606cSSage Weil } 438de57606cSSage Weil 439721d5c13SJeff Layton static inline struct ceph_fs_client * 440721d5c13SJeff Layton ceph_inode_to_client(const struct inode *inode) 441ad1fee96SYehuda Sadeh { 442ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)inode->i_sb->s_fs_info; 443ad1fee96SYehuda Sadeh } 444ad1fee96SYehuda Sadeh 445721d5c13SJeff Layton static inline struct ceph_fs_client * 446721d5c13SJeff Layton ceph_sb_to_client(const struct super_block *sb) 447ad1fee96SYehuda Sadeh { 448ad1fee96SYehuda Sadeh return (struct ceph_fs_client *)sb->s_fs_info; 449ad1fee96SYehuda Sadeh } 450ad1fee96SYehuda Sadeh 451721d5c13SJeff Layton static inline struct ceph_vino 452721d5c13SJeff Layton ceph_vino(const struct inode *inode) 4533d14c5d2SYehuda Sadeh { 4543d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino; 4553d14c5d2SYehuda Sadeh } 4563d14c5d2SYehuda Sadeh 4573d14c5d2SYehuda Sadeh /* 4583d14c5d2SYehuda Sadeh * ino_t is <64 bits on many architectures, blech. 4593d14c5d2SYehuda Sadeh * 460ad1fee96SYehuda Sadeh * i_ino (kernel inode) st_ino (userspace) 461ad1fee96SYehuda Sadeh * i386 32 32 462ad1fee96SYehuda Sadeh * x86_64+ino32 64 32 463ad1fee96SYehuda Sadeh * x86_64 64 64 464ad1fee96SYehuda Sadeh */ 4653310f754SAmon Ott static inline u32 ceph_ino_to_ino32(__u64 vino) 466ad1fee96SYehuda Sadeh { 4673310f754SAmon Ott u32 ino = vino & 0xffffffff; 4683310f754SAmon Ott ino ^= vino >> 32; 469ad1fee96SYehuda Sadeh if (!ino) 470a661fc56SAmon Ott ino = 2; 471ad1fee96SYehuda Sadeh return ino; 472ad1fee96SYehuda Sadeh } 473ad1fee96SYehuda Sadeh 474ad1fee96SYehuda Sadeh /* 475ad1fee96SYehuda Sadeh * kernel i_ino value 4763d14c5d2SYehuda Sadeh */ 4773d14c5d2SYehuda Sadeh static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) 4783d14c5d2SYehuda Sadeh { 4793d14c5d2SYehuda Sadeh #if BITS_PER_LONG == 32 4803310f754SAmon Ott return ceph_ino_to_ino32(vino.ino); 4813310f754SAmon Ott #else 4823310f754SAmon Ott return (ino_t)vino.ino; 4833d14c5d2SYehuda Sadeh #endif 4843d14c5d2SYehuda Sadeh } 4853d14c5d2SYehuda Sadeh 486ad1fee96SYehuda Sadeh /* 487ad1fee96SYehuda Sadeh * user-visible ino (stat, filldir) 488ad1fee96SYehuda Sadeh */ 489ad1fee96SYehuda Sadeh #if BITS_PER_LONG == 32 490ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 491ad1fee96SYehuda Sadeh { 492ad1fee96SYehuda Sadeh return ino; 493ad1fee96SYehuda Sadeh } 494ad1fee96SYehuda Sadeh #else 495ad1fee96SYehuda Sadeh static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) 496ad1fee96SYehuda Sadeh { 497ad1fee96SYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32)) 498ad1fee96SYehuda Sadeh ino = ceph_ino_to_ino32(ino); 499ad1fee96SYehuda Sadeh return ino; 500ad1fee96SYehuda Sadeh } 501ad1fee96SYehuda Sadeh #endif 502ad1fee96SYehuda Sadeh 503ad1fee96SYehuda Sadeh 5043d14c5d2SYehuda Sadeh /* for printf-style formatting */ 5053d14c5d2SYehuda Sadeh #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap 5063d14c5d2SYehuda Sadeh 5073d14c5d2SYehuda Sadeh static inline u64 ceph_ino(struct inode *inode) 5083d14c5d2SYehuda Sadeh { 5093d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.ino; 5103d14c5d2SYehuda Sadeh } 5113d14c5d2SYehuda Sadeh static inline u64 ceph_snap(struct inode *inode) 5123d14c5d2SYehuda Sadeh { 5133d14c5d2SYehuda Sadeh return ceph_inode(inode)->i_vino.snap; 5143d14c5d2SYehuda Sadeh } 5153d14c5d2SYehuda Sadeh 5163d14c5d2SYehuda Sadeh static inline int ceph_ino_compare(struct inode *inode, void *data) 5173d14c5d2SYehuda Sadeh { 5183d14c5d2SYehuda Sadeh struct ceph_vino *pvino = (struct ceph_vino *)data; 5193d14c5d2SYehuda Sadeh struct ceph_inode_info *ci = ceph_inode(inode); 5203d14c5d2SYehuda Sadeh return ci->i_vino.ino == pvino->ino && 5213d14c5d2SYehuda Sadeh ci->i_vino.snap == pvino->snap; 5223d14c5d2SYehuda Sadeh } 5233d14c5d2SYehuda Sadeh 5243d14c5d2SYehuda Sadeh static inline struct inode *ceph_find_inode(struct super_block *sb, 5253d14c5d2SYehuda Sadeh struct ceph_vino vino) 5263d14c5d2SYehuda Sadeh { 5273d14c5d2SYehuda Sadeh ino_t t = ceph_vino_to_ino(vino); 5283d14c5d2SYehuda Sadeh return ilookup5(sb, t, ceph_ino_compare, &vino); 5293d14c5d2SYehuda Sadeh } 5303d14c5d2SYehuda Sadeh 5313d14c5d2SYehuda Sadeh 5323d14c5d2SYehuda Sadeh /* 5333d14c5d2SYehuda Sadeh * Ceph inode. 5343d14c5d2SYehuda Sadeh */ 53510183a69SYan, Zheng #define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ 53610183a69SYan, Zheng #define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ 537daca8bdaSJeff Layton #define CEPH_I_POOL_PERM (1 << 3) /* pool rd/wr bits are valid */ 538daca8bdaSJeff Layton #define CEPH_I_POOL_RD (1 << 4) /* can read from pool */ 539daca8bdaSJeff Layton #define CEPH_I_POOL_WR (1 << 5) /* can write to pool */ 540daca8bdaSJeff Layton #define CEPH_I_SEC_INITED (1 << 6) /* security initialized */ 541c0e385b1SYan, Zheng #define CEPH_I_KICK_FLUSH (1 << 7) /* kick flushing caps */ 542c0e385b1SYan, Zheng #define CEPH_I_FLUSH_SNAPS (1 << 8) /* need flush snapss */ 543c0e385b1SYan, Zheng #define CEPH_I_ERROR_WRITE (1 << 9) /* have seen write errors */ 544c0e385b1SYan, Zheng #define CEPH_I_ERROR_FILELOCK (1 << 10) /* have seen file lock errors */ 545c0e385b1SYan, Zheng #define CEPH_I_ODIRECT (1 << 11) /* inode in direct I/O mode */ 546c0e385b1SYan, Zheng #define CEPH_ASYNC_CREATE_BIT (12) /* async create in flight for this */ 547891f3f5aSJeff Layton #define CEPH_I_ASYNC_CREATE (1 << CEPH_ASYNC_CREATE_BIT) 54826544c62SJeff Layton 54926544c62SJeff Layton /* 5501cf89a8dSYan, Zheng * Masks of ceph inode work. 5511cf89a8dSYan, Zheng */ 5521cf89a8dSYan, Zheng #define CEPH_I_WORK_WRITEBACK 0 /* writeback */ 5531cf89a8dSYan, Zheng #define CEPH_I_WORK_INVALIDATE_PAGES 1 /* invalidate pages */ 5541cf89a8dSYan, Zheng #define CEPH_I_WORK_VMTRUNCATE 2 /* vmtruncate */ 5551cf89a8dSYan, Zheng 5561cf89a8dSYan, Zheng /* 55726544c62SJeff Layton * We set the ERROR_WRITE bit when we start seeing write errors on an inode 55826544c62SJeff Layton * and then clear it when they start succeeding. Note that we do a lockless 55926544c62SJeff Layton * check first, and only take the lock if it looks like it needs to be changed. 56026544c62SJeff Layton * The write submission code just takes this as a hint, so we're not too 56126544c62SJeff Layton * worried if a few slip through in either direction. 56226544c62SJeff Layton */ 56326544c62SJeff Layton static inline void ceph_set_error_write(struct ceph_inode_info *ci) 56426544c62SJeff Layton { 56526544c62SJeff Layton if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE)) { 56626544c62SJeff Layton spin_lock(&ci->i_ceph_lock); 56726544c62SJeff Layton ci->i_ceph_flags |= CEPH_I_ERROR_WRITE; 56826544c62SJeff Layton spin_unlock(&ci->i_ceph_lock); 56926544c62SJeff Layton } 57026544c62SJeff Layton } 57126544c62SJeff Layton 57226544c62SJeff Layton static inline void ceph_clear_error_write(struct ceph_inode_info *ci) 57326544c62SJeff Layton { 57426544c62SJeff Layton if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE) { 57526544c62SJeff Layton spin_lock(&ci->i_ceph_lock); 57626544c62SJeff Layton ci->i_ceph_flags &= ~CEPH_I_ERROR_WRITE; 57726544c62SJeff Layton spin_unlock(&ci->i_ceph_lock); 57826544c62SJeff Layton } 57926544c62SJeff Layton } 5803d14c5d2SYehuda Sadeh 5812f276c51SYan, Zheng static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, 582fdd4e158SYan, Zheng long long release_count, 583fdd4e158SYan, Zheng long long ordered_count) 584de57606cSSage Weil { 58574960773SAndrea Parri /* 58674960773SAndrea Parri * Makes sure operations that setup readdir cache (update page 58774960773SAndrea Parri * cache and i_size) are strongly ordered w.r.t. the following 58874960773SAndrea Parri * atomic64_set() operations. 58974960773SAndrea Parri */ 59074960773SAndrea Parri smp_mb(); 591fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], release_count); 592fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], ordered_count); 593de57606cSSage Weil } 594de57606cSSage Weil 5952f276c51SYan, Zheng static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) 596de57606cSSage Weil { 597fdd4e158SYan, Zheng atomic64_inc(&ci->i_release_count); 598fdd4e158SYan, Zheng } 599fdd4e158SYan, Zheng 600fdd4e158SYan, Zheng static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) 601fdd4e158SYan, Zheng { 602fdd4e158SYan, Zheng atomic64_inc(&ci->i_ordered_count); 603de57606cSSage Weil } 604de57606cSSage Weil 6052f276c51SYan, Zheng static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) 606de57606cSSage Weil { 607fdd4e158SYan, Zheng return atomic64_read(&ci->i_complete_seq[0]) == 608fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count); 6092f276c51SYan, Zheng } 610de57606cSSage Weil 61170db4f36SYan, Zheng static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) 61270db4f36SYan, Zheng { 613fdd4e158SYan, Zheng return atomic64_read(&ci->i_complete_seq[0]) == 614fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count) && 615fdd4e158SYan, Zheng atomic64_read(&ci->i_complete_seq[1]) == 616fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count); 61770db4f36SYan, Zheng } 61870db4f36SYan, Zheng 6192f276c51SYan, Zheng static inline void ceph_dir_clear_complete(struct inode *inode) 6202f276c51SYan, Zheng { 6212f276c51SYan, Zheng __ceph_dir_clear_complete(ceph_inode(inode)); 6222f276c51SYan, Zheng } 6232f276c51SYan, Zheng 62470db4f36SYan, Zheng static inline void ceph_dir_clear_ordered(struct inode *inode) 6252f276c51SYan, Zheng { 626fdd4e158SYan, Zheng __ceph_dir_clear_ordered(ceph_inode(inode)); 627de57606cSSage Weil } 628de57606cSSage Weil 62970db4f36SYan, Zheng static inline bool ceph_dir_is_complete_ordered(struct inode *inode) 63070db4f36SYan, Zheng { 631fdd4e158SYan, Zheng bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode)); 632fdd4e158SYan, Zheng smp_rmb(); 63370db4f36SYan, Zheng return ret; 63470db4f36SYan, Zheng } 635de57606cSSage Weil 636de57606cSSage Weil /* find a specific frag @f */ 637de57606cSSage Weil extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, 638de57606cSSage Weil u32 f); 639de57606cSSage Weil 640de57606cSSage Weil /* 641de57606cSSage Weil * choose fragment for value @v. copy frag content to pfrag, if leaf 642de57606cSSage Weil * exists 643de57606cSSage Weil */ 644de57606cSSage Weil extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 645de57606cSSage Weil struct ceph_inode_frag *pfrag, 646de57606cSSage Weil int *found); 647de57606cSSage Weil 6481e9c2eb6SYan, Zheng static inline struct ceph_dentry_info *ceph_dentry(const struct dentry *dentry) 649de57606cSSage Weil { 650de57606cSSage Weil return (struct ceph_dentry_info *)dentry->d_fsdata; 651de57606cSSage Weil } 652de57606cSSage Weil 653de57606cSSage Weil /* 654de57606cSSage Weil * caps helpers 655de57606cSSage Weil */ 656de57606cSSage Weil static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) 657de57606cSSage Weil { 658de57606cSSage Weil return !RB_EMPTY_ROOT(&ci->i_caps); 659de57606cSSage Weil } 660de57606cSSage Weil 661de57606cSSage Weil extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); 662de57606cSSage Weil extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); 6631af16d54SXiubo Li extern int __ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, int mask, 6641af16d54SXiubo Li int t); 665de57606cSSage Weil extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, 666de57606cSSage Weil struct ceph_cap *cap); 667de57606cSSage Weil 668de57606cSSage Weil static inline int ceph_caps_issued(struct ceph_inode_info *ci) 669de57606cSSage Weil { 670de57606cSSage Weil int issued; 671be655596SSage Weil spin_lock(&ci->i_ceph_lock); 672de57606cSSage Weil issued = __ceph_caps_issued(ci, NULL); 673be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 674de57606cSSage Weil return issued; 675de57606cSSage Weil } 676de57606cSSage Weil 6771af16d54SXiubo Li static inline int ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, 6781af16d54SXiubo Li int mask, int touch) 679de57606cSSage Weil { 680de57606cSSage Weil int r; 681be655596SSage Weil spin_lock(&ci->i_ceph_lock); 6821af16d54SXiubo Li r = __ceph_caps_issued_mask_metric(ci, mask, touch); 683be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 684de57606cSSage Weil return r; 685de57606cSSage Weil } 686de57606cSSage Weil 687de57606cSSage Weil static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) 688de57606cSSage Weil { 689de57606cSSage Weil return ci->i_dirty_caps | ci->i_flushing_caps; 690de57606cSSage Weil } 691f66fd9f0SYan, Zheng extern struct ceph_cap_flush *ceph_alloc_cap_flush(void); 692f66fd9f0SYan, Zheng extern void ceph_free_cap_flush(struct ceph_cap_flush *cf); 693f66fd9f0SYan, Zheng extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, 694f66fd9f0SYan, Zheng struct ceph_cap_flush **pcf); 695de57606cSSage Weil 6969563f88cSYan, Zheng extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, 6979563f88cSYan, Zheng struct ceph_cap *ocap, int mask); 698de57606cSSage Weil extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); 699de57606cSSage Weil extern int __ceph_caps_used(struct ceph_inode_info *ci); 700de57606cSSage Weil 701719a2514SYan, Zheng static inline bool __ceph_is_file_opened(struct ceph_inode_info *ci) 702719a2514SYan, Zheng { 703719a2514SYan, Zheng return ci->i_nr_by_mode[0]; 704719a2514SYan, Zheng } 705de57606cSSage Weil extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); 706525d15e8SYan, Zheng extern int __ceph_caps_wanted(struct ceph_inode_info *ci); 707de57606cSSage Weil 708de57606cSSage Weil /* what the mds thinks we want */ 709c1944fedSYan, Zheng extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check); 710de57606cSSage Weil 71137151668SYehuda Sadeh extern void ceph_caps_init(struct ceph_mds_client *mdsc); 71237151668SYehuda Sadeh extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); 713fe33032dSYan, Zheng extern void ceph_adjust_caps_max_min(struct ceph_mds_client *mdsc, 714fe33032dSYan, Zheng struct ceph_mount_options *fsopt); 715e30ee581SZhi Zhang extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, 71637151668SYehuda Sadeh struct ceph_cap_reservation *ctx, int need); 7177bf8f736SChengguang Xu extern void ceph_unreserve_caps(struct ceph_mds_client *mdsc, 71837151668SYehuda Sadeh struct ceph_cap_reservation *ctx); 7193d14c5d2SYehuda Sadeh extern void ceph_reservation_status(struct ceph_fs_client *client, 720de57606cSSage Weil int *total, int *avail, int *used, 72185ccce43SSage Weil int *reserved, int *min); 722de57606cSSage Weil 723de57606cSSage Weil 724de57606cSSage Weil 725de57606cSSage Weil /* 726de57606cSSage Weil * we keep buffered readdir results attached to file->private_data 727de57606cSSage Weil */ 7284918b6d1SSage Weil #define CEPH_F_SYNC 1 7299cfa1098SSage Weil #define CEPH_F_ATEND 2 7304918b6d1SSage Weil 731de57606cSSage Weil struct ceph_file_info { 732252c6728SSage Weil short fmode; /* initialized on open */ 733252c6728SSage Weil short flags; /* CEPH_F_* */ 734de57606cSSage Weil 7355d988308SYan, Zheng spinlock_t rw_contexts_lock; 7365d988308SYan, Zheng struct list_head rw_contexts; 737f4b97866SYan, Zheng 738f4b97866SYan, Zheng errseq_t meta_err; 73981f148a9SYan, Zheng u32 filp_gen; 740ff5d913dSYan, Zheng atomic_t num_locks; 741bb48bd4dSChengguang Xu }; 742bb48bd4dSChengguang Xu 743bb48bd4dSChengguang Xu struct ceph_dir_file_info { 744bb48bd4dSChengguang Xu struct ceph_file_info file_info; 7455d988308SYan, Zheng 746de57606cSSage Weil /* readdir: position within the dir */ 747de57606cSSage Weil u32 frag; 748de57606cSSage Weil struct ceph_mds_request *last_readdir; 749de57606cSSage Weil 750de57606cSSage Weil /* readdir: position within a frag */ 751f0494206SYan, Zheng unsigned next_offset; /* offset of next chunk (last_name's + 1) */ 752de57606cSSage Weil char *last_name; /* last entry in previous chunk */ 753fdd4e158SYan, Zheng long long dir_release_count; 754fdd4e158SYan, Zheng long long dir_ordered_count; 755fdd4e158SYan, Zheng int readdir_cache_idx; 756de57606cSSage Weil 757de57606cSSage Weil /* used for -o dirstat read() on directory thing */ 758de57606cSSage Weil char *dir_info; 759de57606cSSage Weil int dir_info_len; 760de57606cSSage Weil }; 761de57606cSSage Weil 7625d988308SYan, Zheng struct ceph_rw_context { 7635d988308SYan, Zheng struct list_head list; 7645d988308SYan, Zheng struct task_struct *thread; 7655d988308SYan, Zheng int caps; 7665d988308SYan, Zheng }; 7675d988308SYan, Zheng 7685d988308SYan, Zheng #define CEPH_DEFINE_RW_CONTEXT(_name, _caps) \ 7695d988308SYan, Zheng struct ceph_rw_context _name = { \ 7705d988308SYan, Zheng .thread = current, \ 7715d988308SYan, Zheng .caps = _caps, \ 7725d988308SYan, Zheng } 7735d988308SYan, Zheng 7745d988308SYan, Zheng static inline void ceph_add_rw_context(struct ceph_file_info *cf, 7755d988308SYan, Zheng struct ceph_rw_context *ctx) 7765d988308SYan, Zheng { 7775d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7785d988308SYan, Zheng list_add(&ctx->list, &cf->rw_contexts); 7795d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7805d988308SYan, Zheng } 7815d988308SYan, Zheng 7825d988308SYan, Zheng static inline void ceph_del_rw_context(struct ceph_file_info *cf, 7835d988308SYan, Zheng struct ceph_rw_context *ctx) 7845d988308SYan, Zheng { 7855d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7865d988308SYan, Zheng list_del(&ctx->list); 7875d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 7885d988308SYan, Zheng } 7895d988308SYan, Zheng 7905d988308SYan, Zheng static inline struct ceph_rw_context* 7915d988308SYan, Zheng ceph_find_rw_context(struct ceph_file_info *cf) 7925d988308SYan, Zheng { 7935d988308SYan, Zheng struct ceph_rw_context *ctx, *found = NULL; 7945d988308SYan, Zheng spin_lock(&cf->rw_contexts_lock); 7955d988308SYan, Zheng list_for_each_entry(ctx, &cf->rw_contexts, list) { 7965d988308SYan, Zheng if (ctx->thread == current) { 7975d988308SYan, Zheng found = ctx; 7985d988308SYan, Zheng break; 7995d988308SYan, Zheng } 8005d988308SYan, Zheng } 8015d988308SYan, Zheng spin_unlock(&cf->rw_contexts_lock); 8025d988308SYan, Zheng return found; 8035d988308SYan, Zheng } 8045d988308SYan, Zheng 805fdd4e158SYan, Zheng struct ceph_readdir_cache_control { 806fdd4e158SYan, Zheng struct page *page; 807fdd4e158SYan, Zheng struct dentry **dentries; 808fdd4e158SYan, Zheng int index; 809fdd4e158SYan, Zheng }; 810de57606cSSage Weil 811de57606cSSage Weil /* 812de57606cSSage Weil * A "snap realm" describes a subset of the file hierarchy sharing 813de57606cSSage Weil * the same set of snapshots that apply to it. The realms themselves 814de57606cSSage Weil * are organized into a hierarchy, such that children inherit (some of) 815de57606cSSage Weil * the snapshots of their parents. 816de57606cSSage Weil * 817de57606cSSage Weil * All inodes within the realm that have capabilities are linked into a 818de57606cSSage Weil * per-realm list. 819de57606cSSage Weil */ 820de57606cSSage Weil struct ceph_snap_realm { 821de57606cSSage Weil u64 ino; 822e3161f17SLuis Henriques struct inode *inode; 823de57606cSSage Weil atomic_t nref; 824a105f00cSSage Weil struct rb_node node; 825a105f00cSSage Weil 826de57606cSSage Weil u64 created, seq; 827de57606cSSage Weil u64 parent_ino; 828de57606cSSage Weil u64 parent_since; /* snapid when our current parent became so */ 829de57606cSSage Weil 830de57606cSSage Weil u64 *prior_parent_snaps; /* snaps inherited from any parents we */ 831aa711ee3SAlex Elder u32 num_prior_parent_snaps; /* had prior to parent_since */ 832de57606cSSage Weil u64 *snaps; /* snaps specific to this realm */ 833aa711ee3SAlex Elder u32 num_snaps; 834de57606cSSage Weil 835de57606cSSage Weil struct ceph_snap_realm *parent; 836de57606cSSage Weil struct list_head children; /* list of child realms */ 837de57606cSSage Weil struct list_head child_item; 838de57606cSSage Weil 839de57606cSSage Weil struct list_head empty_item; /* if i have ref==0 */ 840de57606cSSage Weil 841ae00d4f3SSage Weil struct list_head dirty_item; /* if realm needs new context */ 842ae00d4f3SSage Weil 843de57606cSSage Weil /* the current set of snaps for this realm */ 844de57606cSSage Weil struct ceph_snap_context *cached_context; 845de57606cSSage Weil 846de57606cSSage Weil struct list_head inodes_with_caps; 847de57606cSSage Weil spinlock_t inodes_with_caps_lock; 848de57606cSSage Weil }; 849de57606cSSage Weil 8503d14c5d2SYehuda Sadeh static inline int default_congestion_kb(void) 8513d14c5d2SYehuda Sadeh { 8523d14c5d2SYehuda Sadeh int congestion_kb; 853de57606cSSage Weil 854de57606cSSage Weil /* 8553d14c5d2SYehuda Sadeh * Copied from NFS 8563d14c5d2SYehuda Sadeh * 8573d14c5d2SYehuda Sadeh * congestion size, scale with available memory. 8583d14c5d2SYehuda Sadeh * 8593d14c5d2SYehuda Sadeh * 64MB: 8192k 8603d14c5d2SYehuda Sadeh * 128MB: 11585k 8613d14c5d2SYehuda Sadeh * 256MB: 16384k 8623d14c5d2SYehuda Sadeh * 512MB: 23170k 8633d14c5d2SYehuda Sadeh * 1GB: 32768k 8643d14c5d2SYehuda Sadeh * 2GB: 46340k 8653d14c5d2SYehuda Sadeh * 4GB: 65536k 8663d14c5d2SYehuda Sadeh * 8GB: 92681k 8673d14c5d2SYehuda Sadeh * 16GB: 131072k 8683d14c5d2SYehuda Sadeh * 8693d14c5d2SYehuda Sadeh * This allows larger machines to have larger/more transfers. 8703d14c5d2SYehuda Sadeh * Limit the default to 256M 871de57606cSSage Weil */ 872ca79b0c2SArun KS congestion_kb = (16*int_sqrt(totalram_pages())) << (PAGE_SHIFT-10); 8733d14c5d2SYehuda Sadeh if (congestion_kb > 256*1024) 8743d14c5d2SYehuda Sadeh congestion_kb = 256*1024; 8753d14c5d2SYehuda Sadeh 8763d14c5d2SYehuda Sadeh return congestion_kb; 877de57606cSSage Weil } 878de57606cSSage Weil 879de57606cSSage Weil 880d468e729SYan, Zheng /* super.c */ 881d468e729SYan, Zheng extern int ceph_force_reconnect(struct super_block *sb); 882de57606cSSage Weil /* snap.c */ 883de57606cSSage Weil struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, 884de57606cSSage Weil u64 ino); 885de57606cSSage Weil extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, 886de57606cSSage Weil struct ceph_snap_realm *realm); 887de57606cSSage Weil extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, 888de57606cSSage Weil struct ceph_snap_realm *realm); 889de57606cSSage Weil extern int ceph_update_snap_trace(struct ceph_mds_client *m, 890982d6011SYan, Zheng void *p, void *e, bool deletion, 891982d6011SYan, Zheng struct ceph_snap_realm **realm_ret); 892de57606cSSage Weil extern void ceph_handle_snap(struct ceph_mds_client *mdsc, 8932600d2ddSSage Weil struct ceph_mds_session *session, 894de57606cSSage Weil struct ceph_msg *msg); 895fc837c8fSSage Weil extern void ceph_queue_cap_snap(struct ceph_inode_info *ci); 896de57606cSSage Weil extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, 897de57606cSSage Weil struct ceph_cap_snap *capsnap); 898de57606cSSage Weil extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); 899de57606cSSage Weil 90075c9627eSYan, Zheng extern struct ceph_snapid_map *ceph_get_snapid_map(struct ceph_mds_client *mdsc, 90175c9627eSYan, Zheng u64 snap); 90275c9627eSYan, Zheng extern void ceph_put_snapid_map(struct ceph_mds_client* mdsc, 90375c9627eSYan, Zheng struct ceph_snapid_map *sm); 90475c9627eSYan, Zheng extern void ceph_trim_snapid_map(struct ceph_mds_client *mdsc); 90575c9627eSYan, Zheng extern void ceph_cleanup_snapid_map(struct ceph_mds_client *mdsc); 90675c9627eSYan, Zheng 90775c9627eSYan, Zheng 908de57606cSSage Weil /* 909de57606cSSage Weil * a cap_snap is "pending" if it is still awaiting an in-progress 910de57606cSSage Weil * sync write (that may/may not still update size, mtime, etc.). 911de57606cSSage Weil */ 912de57606cSSage Weil static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) 913de57606cSSage Weil { 914de57606cSSage Weil return !list_empty(&ci->i_cap_snaps) && 91586056090SYan, Zheng list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap, 916de57606cSSage Weil ci_item)->writing; 917de57606cSSage Weil } 918de57606cSSage Weil 919de57606cSSage Weil /* inode.c */ 920966c7160SJeff Layton struct ceph_mds_reply_info_in; 921966c7160SJeff Layton struct ceph_mds_reply_dirfrag; 922966c7160SJeff Layton 923de57606cSSage Weil extern const struct inode_operations ceph_file_iops; 924de57606cSSage Weil 925de57606cSSage Weil extern struct inode *ceph_alloc_inode(struct super_block *sb); 92687bc5b89SYan, Zheng extern void ceph_evict_inode(struct inode *inode); 927cfa6d412SAl Viro extern void ceph_free_inode(struct inode *inode); 928de57606cSSage Weil 929de57606cSSage Weil extern struct inode *ceph_get_inode(struct super_block *sb, 930de57606cSSage Weil struct ceph_vino vino); 931de57606cSSage Weil extern struct inode *ceph_get_snapdir(struct inode *parent); 932de57606cSSage Weil extern int ceph_fill_file_size(struct inode *inode, int issued, 933de57606cSSage Weil u32 truncate_seq, u64 truncate_size, u64 size); 934de57606cSSage Weil extern void ceph_fill_file_time(struct inode *inode, int issued, 9359bbeab41SArnd Bergmann u64 time_warp_seq, struct timespec64 *ctime, 9369bbeab41SArnd Bergmann struct timespec64 *mtime, 9379bbeab41SArnd Bergmann struct timespec64 *atime); 938966c7160SJeff Layton extern int ceph_fill_inode(struct inode *inode, struct page *locked_page, 939966c7160SJeff Layton struct ceph_mds_reply_info_in *iinfo, 940966c7160SJeff Layton struct ceph_mds_reply_dirfrag *dirinfo, 941966c7160SJeff Layton struct ceph_mds_session *session, int cap_fmode, 942966c7160SJeff Layton struct ceph_cap_reservation *caps_reservation); 943de57606cSSage Weil extern int ceph_fill_trace(struct super_block *sb, 944f5a03b08SJeff Layton struct ceph_mds_request *req); 945de57606cSSage Weil extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, 946de57606cSSage Weil struct ceph_mds_session *session); 947de57606cSSage Weil 948de57606cSSage Weil extern int ceph_inode_holds_cap(struct inode *inode, int mask); 949de57606cSSage Weil 950efb0ca76SYan, Zheng extern bool ceph_inode_set_size(struct inode *inode, loff_t size); 951b415bf4fSYan, Zheng extern void __ceph_do_pending_vmtruncate(struct inode *inode); 9523c6f6b79SSage Weil extern void ceph_queue_vmtruncate(struct inode *inode); 9533c6f6b79SSage Weil extern void ceph_queue_invalidate(struct inode *inode); 9543c6f6b79SSage Weil extern void ceph_queue_writeback(struct inode *inode); 9553e1d0452SYan, Zheng extern void ceph_async_iput(struct inode *inode); 956de57606cSSage Weil 95701deead0SYan, Zheng extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 95801deead0SYan, Zheng int mask, bool force); 95901deead0SYan, Zheng static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) 96001deead0SYan, Zheng { 96101deead0SYan, Zheng return __ceph_do_getattr(inode, NULL, mask, force); 96201deead0SYan, Zheng } 96310556cb2SAl Viro extern int ceph_permission(struct inode *inode, int mask); 964a26feccaSAndreas Gruenbacher extern int __ceph_setattr(struct inode *inode, struct iattr *attr); 965de57606cSSage Weil extern int ceph_setattr(struct dentry *dentry, struct iattr *attr); 966a528d35eSDavid Howells extern int ceph_getattr(const struct path *path, struct kstat *stat, 967a528d35eSDavid Howells u32 request_mask, unsigned int flags); 968de57606cSSage Weil 969de57606cSSage Weil /* xattr.c */ 970a26feccaSAndreas Gruenbacher int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); 9717221fe4cSGuangliang Zhao ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); 972de57606cSSage Weil extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); 97312fe3ddaSLuis Henriques extern struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci); 974de57606cSSage Weil extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); 975b1ee94aaSYan, Zheng extern const struct xattr_handler *ceph_xattr_handlers[]; 976de57606cSSage Weil 9775c31e92dSYan, Zheng struct ceph_acl_sec_ctx { 9785c31e92dSYan, Zheng #ifdef CONFIG_CEPH_FS_POSIX_ACL 9795c31e92dSYan, Zheng void *default_acl; 9805c31e92dSYan, Zheng void *acl; 9815c31e92dSYan, Zheng #endif 982ac6713ccSYan, Zheng #ifdef CONFIG_CEPH_FS_SECURITY_LABEL 983ac6713ccSYan, Zheng void *sec_ctx; 984ac6713ccSYan, Zheng u32 sec_ctxlen; 985ac6713ccSYan, Zheng #endif 9865c31e92dSYan, Zheng struct ceph_pagelist *pagelist; 9875c31e92dSYan, Zheng }; 9885c31e92dSYan, Zheng 989315f2408SYan, Zheng #ifdef CONFIG_SECURITY 990315f2408SYan, Zheng extern bool ceph_security_xattr_deadlock(struct inode *in); 991315f2408SYan, Zheng extern bool ceph_security_xattr_wanted(struct inode *in); 992315f2408SYan, Zheng #else 993315f2408SYan, Zheng static inline bool ceph_security_xattr_deadlock(struct inode *in) 994315f2408SYan, Zheng { 995315f2408SYan, Zheng return false; 996315f2408SYan, Zheng } 997315f2408SYan, Zheng static inline bool ceph_security_xattr_wanted(struct inode *in) 998315f2408SYan, Zheng { 999315f2408SYan, Zheng return false; 1000315f2408SYan, Zheng } 1001315f2408SYan, Zheng #endif 1002315f2408SYan, Zheng 1003ac6713ccSYan, Zheng #ifdef CONFIG_CEPH_FS_SECURITY_LABEL 1004ac6713ccSYan, Zheng extern int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, 1005ac6713ccSYan, Zheng struct ceph_acl_sec_ctx *ctx); 1006668959a5SJeff Layton static inline void ceph_security_invalidate_secctx(struct inode *inode) 1007668959a5SJeff Layton { 1008668959a5SJeff Layton security_inode_invalidate_secctx(inode); 1009668959a5SJeff Layton } 1010ac6713ccSYan, Zheng #else 1011ac6713ccSYan, Zheng static inline int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, 1012ac6713ccSYan, Zheng struct ceph_acl_sec_ctx *ctx) 1013ac6713ccSYan, Zheng { 1014ac6713ccSYan, Zheng return 0; 1015ac6713ccSYan, Zheng } 1016ac6713ccSYan, Zheng static inline void ceph_security_invalidate_secctx(struct inode *inode) 1017ac6713ccSYan, Zheng { 1018ac6713ccSYan, Zheng } 1019ac6713ccSYan, Zheng #endif 10207221fe4cSGuangliang Zhao 10215c31e92dSYan, Zheng void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx); 10227221fe4cSGuangliang Zhao 10235c31e92dSYan, Zheng /* acl.c */ 10247221fe4cSGuangliang Zhao #ifdef CONFIG_CEPH_FS_POSIX_ACL 10257221fe4cSGuangliang Zhao 10267221fe4cSGuangliang Zhao struct posix_acl *ceph_get_acl(struct inode *, int); 102772466d0bSSage Weil int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type); 1028b1ee94aaSYan, Zheng int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 10295c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx); 10305c31e92dSYan, Zheng void ceph_init_inode_acls(struct inode *inode, 10315c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx); 1032c969d9bfSGuangliang Zhao 1033c969d9bfSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 1034c969d9bfSGuangliang Zhao { 1035c969d9bfSGuangliang Zhao forget_all_cached_acls(inode); 1036c969d9bfSGuangliang Zhao } 10377221fe4cSGuangliang Zhao 10387221fe4cSGuangliang Zhao #else 10397221fe4cSGuangliang Zhao 10407221fe4cSGuangliang Zhao #define ceph_get_acl NULL 104172466d0bSSage Weil #define ceph_set_acl NULL 10427221fe4cSGuangliang Zhao 1043b1ee94aaSYan, Zheng static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, 10445c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx) 10457221fe4cSGuangliang Zhao { 10467221fe4cSGuangliang Zhao return 0; 10477221fe4cSGuangliang Zhao } 1048b1ee94aaSYan, Zheng static inline void ceph_init_inode_acls(struct inode *inode, 10495c31e92dSYan, Zheng struct ceph_acl_sec_ctx *as_ctx) 1050b1ee94aaSYan, Zheng { 1051b1ee94aaSYan, Zheng } 10527221fe4cSGuangliang Zhao static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) 10537221fe4cSGuangliang Zhao { 10547221fe4cSGuangliang Zhao return 0; 10557221fe4cSGuangliang Zhao } 10567221fe4cSGuangliang Zhao 10577221fe4cSGuangliang Zhao static inline void ceph_forget_all_cached_acls(struct inode *inode) 10587221fe4cSGuangliang Zhao { 10597221fe4cSGuangliang Zhao } 10607221fe4cSGuangliang Zhao 10617221fe4cSGuangliang Zhao #endif 10627221fe4cSGuangliang Zhao 1063de57606cSSage Weil /* caps.c */ 1064de57606cSSage Weil extern const char *ceph_cap_string(int c); 1065de57606cSSage Weil extern void ceph_handle_caps(struct ceph_mds_session *session, 1066de57606cSSage Weil struct ceph_msg *msg); 1067d9df2783SYan, Zheng extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, 1068d9df2783SYan, Zheng struct ceph_cap_reservation *ctx); 1069d9df2783SYan, Zheng extern void ceph_add_cap(struct inode *inode, 1070de57606cSSage Weil struct ceph_mds_session *session, u64 cap_id, 1071135e671eSYan, Zheng unsigned issued, unsigned wanted, 1072de57606cSSage Weil unsigned cap, unsigned seq, u64 realmino, int flags, 1073d9df2783SYan, Zheng struct ceph_cap **new_cap); 1074a096b09aSYan, Zheng extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); 1075d6e47819SYan, Zheng extern void __ceph_remove_caps(struct ceph_inode_info *ci); 107637151668SYehuda Sadeh extern void ceph_put_cap(struct ceph_mds_client *mdsc, 107737151668SYehuda Sadeh struct ceph_cap *cap); 10789215aeeaSYan, Zheng extern int ceph_is_any_caps(struct inode *inode); 1079de57606cSSage Weil 1080f1a3d572SStephen Rothwell extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); 108102c24a82SJosef Bacik extern int ceph_fsync(struct file *file, loff_t start, loff_t end, 108202c24a82SJosef Bacik int datasync); 1083e548e9b9SYan, Zheng extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, 1084e548e9b9SYan, Zheng struct ceph_mds_session *session); 1085de57606cSSage Weil extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, 1086de57606cSSage Weil struct ceph_mds_session *session); 1087e8a4d267SJeff Layton void ceph_kick_flushing_inode_caps(struct ceph_mds_session *session, 1088e8a4d267SJeff Layton struct ceph_inode_info *ci); 10892bc50259SGreg Farnum extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, 10902bc50259SGreg Farnum int mds); 109140dcf75eSJeff Layton extern void ceph_take_cap_refs(struct ceph_inode_info *ci, int caps, 109240dcf75eSJeff Layton bool snap_rwsem_locked); 1093de57606cSSage Weil extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); 1094de57606cSSage Weil extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); 1095de57606cSSage Weil extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, 1096de57606cSSage Weil struct ceph_snap_context *snapc); 1097ed9b430cSYan, Zheng extern void ceph_flush_snaps(struct ceph_inode_info *ci, 10980e294387SYan, Zheng struct ceph_mds_session **psession); 1099efb0ca76SYan, Zheng extern bool __ceph_should_report_size(struct ceph_inode_info *ci); 1100de57606cSSage Weil extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, 1101de57606cSSage Weil struct ceph_mds_session *session); 1102afcdaea3SSage Weil extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc); 1103afcdaea3SSage Weil extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); 11046ef0bc6dSZhi Zhang extern int ceph_drop_caps_for_unlink(struct inode *inode); 1105de57606cSSage Weil extern int ceph_encode_inode_release(void **p, struct inode *inode, 1106de57606cSSage Weil int mds, int drop, int unless, int force); 1107de57606cSSage Weil extern int ceph_encode_dentry_release(void **p, struct dentry *dn, 1108ca6c8ae0SJeff Layton struct inode *dir, 1109de57606cSSage Weil int mds, int drop, int unless); 1110de57606cSSage Weil 11115e3ded1bSYan, Zheng extern int ceph_get_caps(struct file *filp, int need, int want, 111231c542a1SYan, Zheng loff_t endoff, int *got, struct page **pinned_page); 11135e3ded1bSYan, Zheng extern int ceph_try_get_caps(struct inode *inode, 11142ee9dd95SLuis Henriques int need, int want, bool nonblock, int *got); 1115de57606cSSage Weil 1116de57606cSSage Weil /* for counting open files by mode */ 1117719a2514SYan, Zheng extern void ceph_get_fmode(struct ceph_inode_info *ci, int mode, int count); 1118719a2514SYan, Zheng extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode, int count); 1119719a2514SYan, Zheng extern void __ceph_touch_fmode(struct ceph_inode_info *ci, 1120719a2514SYan, Zheng struct ceph_mds_client *mdsc, int fmode); 1121de57606cSSage Weil 1122de57606cSSage Weil /* addr.c */ 1123de57606cSSage Weil extern const struct address_space_operations ceph_aops; 1124de57606cSSage Weil extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); 112510183a69SYan, Zheng extern int ceph_uninline_data(struct file *filp, struct page *locked_page); 11265e3ded1bSYan, Zheng extern int ceph_pool_perm_check(struct inode *inode, int need); 112710183a69SYan, Zheng extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); 1128de57606cSSage Weil 1129de57606cSSage Weil /* file.c */ 1130de57606cSSage Weil extern const struct file_operations ceph_file_fops; 11319e0eb85dSAlex Elder 1132719a2514SYan, Zheng extern int ceph_renew_caps(struct inode *inode, int fmode); 1133de57606cSSage Weil extern int ceph_open(struct inode *inode, struct file *file); 11345ef50c3bSSage Weil extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, 113544907d79SAl Viro struct file *file, unsigned flags, umode_t mode); 1136de57606cSSage Weil extern int ceph_release(struct inode *inode, struct file *filp); 113731c542a1SYan, Zheng extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, 113831c542a1SYan, Zheng char *data, size_t len); 113955f2a045SIlya Dryomov 1140de57606cSSage Weil /* dir.c */ 1141de57606cSSage Weil extern const struct file_operations ceph_dir_fops; 114238c48b5fSYan, Zheng extern const struct file_operations ceph_snapdir_fops; 1143de57606cSSage Weil extern const struct inode_operations ceph_dir_iops; 114438c48b5fSYan, Zheng extern const struct inode_operations ceph_snapdir_iops; 114518fc8abdSAl Viro extern const struct dentry_operations ceph_dentry_ops; 1146de57606cSSage Weil 1147f3c4ebe6SYan, Zheng extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order); 1148de57606cSSage Weil extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); 1149468640e3SSage Weil extern int ceph_handle_snapdir(struct ceph_mds_request *req, 1150468640e3SSage Weil struct dentry *dentry, int err); 1151de57606cSSage Weil extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, 1152de57606cSSage Weil struct dentry *dentry, int err); 1153de57606cSSage Weil 115437c4efc1SYan, Zheng extern void __ceph_dentry_lease_touch(struct ceph_dentry_info *di); 115537c4efc1SYan, Zheng extern void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di); 115681a6cf2dSSage Weil extern void ceph_invalidate_dentry_lease(struct dentry *dentry); 115737c4efc1SYan, Zheng extern int ceph_trim_dentries(struct ceph_mds_client *mdsc); 1158e5f86dc3SSage Weil extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); 1159fdd4e158SYan, Zheng extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl); 1160de57606cSSage Weil 1161de57606cSSage Weil /* ioctl.c */ 1162de57606cSSage Weil extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 1163de57606cSSage Weil 1164de57606cSSage Weil /* export.c */ 1165de57606cSSage Weil extern const struct export_operations ceph_export_ops; 11663886274aSLuis Henriques struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino); 1167de57606cSSage Weil 116840819f6fSGreg Farnum /* locks.c */ 1169eb13e832SYan, Zheng extern __init void ceph_flock_init(void); 117040819f6fSGreg Farnum extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); 117140819f6fSGreg Farnum extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); 117240819f6fSGreg Farnum extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); 117339be95e9SJim Schutt extern int ceph_encode_locks_to_buffer(struct inode *inode, 117439be95e9SJim Schutt struct ceph_filelock *flocks, 117539be95e9SJim Schutt int num_fcntl_locks, 117639be95e9SJim Schutt int num_flock_locks); 117739be95e9SJim Schutt extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, 117839be95e9SJim Schutt struct ceph_pagelist *pagelist, 117939be95e9SJim Schutt int num_fcntl_locks, int num_flock_locks); 118040819f6fSGreg Farnum 11813d14c5d2SYehuda Sadeh /* debugfs.c */ 11821a829ff2SGreg Kroah-Hartman extern void ceph_fs_debugfs_init(struct ceph_fs_client *client); 11833d14c5d2SYehuda Sadeh extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); 11843d14c5d2SYehuda Sadeh 1185fb18a575SLuis Henriques /* quota.c */ 1186d557c48dSLuis Henriques static inline bool __ceph_has_any_quota(struct ceph_inode_info *ci) 1187d557c48dSLuis Henriques { 1188d557c48dSLuis Henriques return ci->i_max_files || ci->i_max_bytes; 1189d557c48dSLuis Henriques } 1190d557c48dSLuis Henriques 1191d557c48dSLuis Henriques extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc); 1192d557c48dSLuis Henriques 1193d557c48dSLuis Henriques static inline void __ceph_update_quota(struct ceph_inode_info *ci, 1194d557c48dSLuis Henriques u64 max_bytes, u64 max_files) 1195d557c48dSLuis Henriques { 1196d557c48dSLuis Henriques bool had_quota, has_quota; 1197d557c48dSLuis Henriques had_quota = __ceph_has_any_quota(ci); 1198d557c48dSLuis Henriques ci->i_max_bytes = max_bytes; 1199d557c48dSLuis Henriques ci->i_max_files = max_files; 1200d557c48dSLuis Henriques has_quota = __ceph_has_any_quota(ci); 1201d557c48dSLuis Henriques 1202d557c48dSLuis Henriques if (had_quota != has_quota) 1203d557c48dSLuis Henriques ceph_adjust_quota_realms_count(&ci->vfs_inode, has_quota); 1204d557c48dSLuis Henriques } 1205d557c48dSLuis Henriques 1206fb18a575SLuis Henriques extern void ceph_handle_quota(struct ceph_mds_client *mdsc, 1207fb18a575SLuis Henriques struct ceph_mds_session *session, 1208fb18a575SLuis Henriques struct ceph_msg *msg); 1209b7a29217SLuis Henriques extern bool ceph_quota_is_max_files_exceeded(struct inode *inode); 1210cafe21a4SLuis Henriques extern bool ceph_quota_is_same_realm(struct inode *old, struct inode *new); 12112b83845fSLuis Henriques extern bool ceph_quota_is_max_bytes_exceeded(struct inode *inode, 12122b83845fSLuis Henriques loff_t newlen); 12131ab302a0SLuis Henriques extern bool ceph_quota_is_max_bytes_approaching(struct inode *inode, 12141ab302a0SLuis Henriques loff_t newlen); 12159122eed5SLuis Henriques extern bool ceph_quota_update_statfs(struct ceph_fs_client *fsc, 12169122eed5SLuis Henriques struct kstatfs *buf); 12170c44a8e0SLuis Henriques extern void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc); 1218fb18a575SLuis Henriques 1219de57606cSSage Weil #endif /* _FS_CEPH_SUPER_H */ 1220