/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _FS_CEPH_SUPER_H #define _FS_CEPH_SUPER_H #include <linux/ceph/ceph_debug.h> #include <linux/ceph/osd_client.h> #include <asm/unaligned.h> #include <linux/backing-dev.h> #include <linux/completion.h> #include <linux/exportfs.h> #include <linux/fs.h> #include <linux/mempool.h> #include <linux/pagemap.h> #include <linux/wait.h> #include <linux/writeback.h> #include <linux/slab.h> #include <linux/posix_acl.h> #include <linux/refcount.h> #include <linux/security.h> #include <linux/netfs.h> #include <linux/fscache.h> #include <linux/hashtable.h> #include <linux/ceph/libceph.h> #include "crypto.h" /* large granularity for statfs utilization stats to facilitate * large volume sizes on 32-bit machines. */ #define CEPH_BLOCK_SHIFT … #define CEPH_BLOCK … #define CEPH_4K_BLOCK_SHIFT … #define CEPH_MOUNT_OPT_CLEANRECOVER … #define CEPH_MOUNT_OPT_DIRSTAT … #define CEPH_MOUNT_OPT_RBYTES … #define CEPH_MOUNT_OPT_NOASYNCREADDIR … #define CEPH_MOUNT_OPT_INO32 … #define CEPH_MOUNT_OPT_DCACHE … #define CEPH_MOUNT_OPT_FSCACHE … #define CEPH_MOUNT_OPT_NOPOOLPERM … #define CEPH_MOUNT_OPT_MOUNTWAIT … #define CEPH_MOUNT_OPT_NOQUOTADF … #define CEPH_MOUNT_OPT_NOCOPYFROM … #define CEPH_MOUNT_OPT_ASYNC_DIROPS … #define CEPH_MOUNT_OPT_NOPAGECACHE … #define CEPH_MOUNT_OPT_SPARSEREAD … #define CEPH_MOUNT_OPT_DEFAULT … #define ceph_set_mount_opt(fsc, opt) … #define ceph_clear_mount_opt(fsc, opt) … #define ceph_test_mount_opt(fsc, opt) … /* max size of osd read request, limited by libceph */ #define CEPH_MAX_READ_SIZE … /* osd has a configurable limitaion of max write size. * CEPH_MSG_MAX_DATA_LEN should be small enough. */ #define CEPH_MAX_WRITE_SIZE … #define CEPH_RASIZE_DEFAULT … #define CEPH_MAX_READDIR_DEFAULT … #define CEPH_MAX_READDIR_BYTES_DEFAULT … #define CEPH_SNAPDIRNAME_DEFAULT … /* * Delay telling the MDS we no longer want caps, in case we reopen * the file. Delay a minimum amount of time, even if we send a cap * message for some other reason. Otherwise, take the oppotunity to * update the mds to avoid sending another message later. */ #define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT … #define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT … struct ceph_mount_options { … }; /* mount state */ enum { … }; #define CEPH_ASYNC_CREATE_CONFLICT_BITS … struct ceph_fs_client { … }; /* * File i/o capability. This tracks shared state with the metadata * server that allows us to cache or writeback attributes or to read * and write data. For any given inode, we should have one or more * capabilities, one issued by each metadata server, and our * cumulative access is the OR of all issued capabilities. * * Each cap is referenced by the inode's i_caps rbtree and by per-mds * session capability lists. */ struct ceph_cap { … }; #define CHECK_CAPS_AUTHONLY … #define CHECK_CAPS_FLUSH … #define CHECK_CAPS_NOINVAL … #define CHECK_CAPS_FLUSH_FORCE … struct ceph_cap_flush { … }; /* * Snapped cap state that is pending flush to mds. When a snapshot occurs, * we first complete any in-process sync writes and writeback any dirty * data before flushing the snapped state (tracked here) back to the MDS. */ struct ceph_cap_snap { … }; static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) { … } /* * The frag tree describes how a directory is fragmented, potentially across * multiple metadata servers. It is also used to indicate points where * metadata authority is delegated, and whether/where metadata is replicated. * * A _leaf_ frag will be present in the i_fragtree IFF there is * delegation info. That is, if mds >= 0 || ndist > 0. */ #define CEPH_MAX_DIRFRAG_REP … struct ceph_inode_frag { … }; /* * We cache inode xattrs as an encoded blob until they are first used, * at which point we parse them into an rbtree. */ struct ceph_inode_xattr { … }; /* * Ceph dentry state */ struct ceph_dentry_info { … }; #define CEPH_DENTRY_REFERENCED … #define CEPH_DENTRY_LEASE_LIST … #define CEPH_DENTRY_SHRINK_LIST … #define CEPH_DENTRY_PRIMARY_LINK … #define CEPH_DENTRY_ASYNC_UNLINK_BIT … #define CEPH_DENTRY_ASYNC_UNLINK … #define CEPH_DENTRY_ASYNC_CREATE_BIT … #define CEPH_DENTRY_ASYNC_CREATE … struct ceph_inode_xattrs_info { … }; /* * Ceph inode. */ struct ceph_inode_info { … }; struct ceph_netfs_request_data { … }; static inline struct ceph_inode_info * ceph_inode(const struct inode *inode) { … } static inline struct ceph_fs_client * ceph_inode_to_fs_client(const struct inode *inode) { … } static inline struct ceph_fs_client * ceph_sb_to_fs_client(const struct super_block *sb) { … } static inline struct ceph_mds_client * ceph_sb_to_mdsc(const struct super_block *sb) { … } static inline struct ceph_client * ceph_inode_to_client(const struct inode *inode) { … } static inline struct ceph_vino ceph_vino(const struct inode *inode) { … } static inline u32 ceph_ino_to_ino32(u64 vino) { … } /* * Inode numbers in cephfs are 64 bits, but inode->i_ino is 32-bits on * some arches. We generally do not use this value inside the ceph driver, but * we do want to set it to something, so that generic vfs code has an * appropriate value for tracepoints and the like. */ static inline ino_t ceph_vino_to_ino_t(struct ceph_vino vino) { … } /* for printf-style formatting */ #define ceph_vinop(i) … static inline u64 ceph_ino(struct inode *inode) { … } static inline u64 ceph_snap(struct inode *inode) { … } /** * ceph_present_ino - format an inode number for presentation to userland * @sb: superblock where the inode lives * @ino: inode number to (possibly) convert * * If the user mounted with the ino32 option, then the 64-bit value needs * to be converted to something that can fit inside 32 bits. Note that * internal kernel code never uses this value, so this is entirely for * userland consumption. */ static inline u64 ceph_present_ino(struct super_block *sb, u64 ino) { … } static inline u64 ceph_present_inode(struct inode *inode) { … } static inline int ceph_ino_compare(struct inode *inode, void *data) { … } /* * The MDS reserves a set of inodes for its own usage. These should never * be accessible by clients, and so the MDS has no reason to ever hand these * out. The range is CEPH_MDS_INO_MDSDIR_OFFSET..CEPH_INO_SYSTEM_BASE. * * These come from src/mds/mdstypes.h in the ceph sources. */ #define CEPH_MAX_MDS … #define CEPH_NUM_STRAY … #define CEPH_MDS_INO_MDSDIR_OFFSET … #define CEPH_MDS_INO_LOG_OFFSET … #define CEPH_INO_SYSTEM_BASE … static inline bool ceph_vino_is_reserved(const struct ceph_vino vino) { … } static inline struct inode *ceph_find_inode(struct super_block *sb, struct ceph_vino vino) { … } /* * Ceph inode. */ #define CEPH_I_DIR_ORDERED … #define CEPH_I_FLUSH … #define CEPH_I_POOL_PERM … #define CEPH_I_POOL_RD … #define CEPH_I_POOL_WR … #define CEPH_I_SEC_INITED … #define CEPH_I_KICK_FLUSH … #define CEPH_I_FLUSH_SNAPS … #define CEPH_I_ERROR_WRITE … #define CEPH_I_ERROR_FILELOCK … #define CEPH_I_ODIRECT … #define CEPH_ASYNC_CREATE_BIT … #define CEPH_I_ASYNC_CREATE … #define CEPH_I_SHUTDOWN … #define CEPH_I_ASYNC_CHECK_CAPS … /* * Masks of ceph inode work. */ #define CEPH_I_WORK_WRITEBACK … #define CEPH_I_WORK_INVALIDATE_PAGES … #define CEPH_I_WORK_VMTRUNCATE … #define CEPH_I_WORK_CHECK_CAPS … #define CEPH_I_WORK_FLUSH_SNAPS … /* * We set the ERROR_WRITE bit when we start seeing write errors on an inode * and then clear it when they start succeeding. Note that we do a lockless * check first, and only take the lock if it looks like it needs to be changed. * The write submission code just takes this as a hint, so we're not too * worried if a few slip through in either direction. */ static inline void ceph_set_error_write(struct ceph_inode_info *ci) { … } static inline void ceph_clear_error_write(struct ceph_inode_info *ci) { … } static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, long long release_count, long long ordered_count) { … } static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) { … } static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) { … } static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) { … } static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) { … } static inline void ceph_dir_clear_complete(struct inode *inode) { … } static inline void ceph_dir_clear_ordered(struct inode *inode) { … } static inline bool ceph_dir_is_complete_ordered(struct inode *inode) { … } /* find a specific frag @f */ extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f); /* * choose fragment for value @v. copy frag content to pfrag, if leaf * exists */ extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, struct ceph_inode_frag *pfrag, int *found); static inline struct ceph_dentry_info *ceph_dentry(const struct dentry *dentry) { … } /* * caps helpers */ static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) { … } extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); extern int __ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, int mask, int t); extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, struct ceph_cap *cap); static inline int ceph_caps_issued(struct ceph_inode_info *ci) { … } static inline int ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, int mask, int touch) { … } static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) { … } extern struct ceph_cap_flush *ceph_alloc_cap_flush(void); extern void ceph_free_cap_flush(struct ceph_cap_flush *cf); extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, struct ceph_cap_flush **pcf); extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, struct ceph_cap *ocap, int mask); extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); extern int __ceph_caps_used(struct ceph_inode_info *ci); static inline bool __ceph_is_file_opened(struct ceph_inode_info *ci) { … } extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); extern int __ceph_caps_wanted(struct ceph_inode_info *ci); /* what the mds thinks we want */ extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check); extern void ceph_caps_init(struct ceph_mds_client *mdsc); extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); extern void ceph_adjust_caps_max_min(struct ceph_mds_client *mdsc, struct ceph_mount_options *fsopt); extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, struct ceph_cap_reservation *ctx, int need); extern void ceph_unreserve_caps(struct ceph_mds_client *mdsc, struct ceph_cap_reservation *ctx); extern void ceph_reservation_status(struct ceph_fs_client *client, int *total, int *avail, int *used, int *reserved, int *min); extern void change_auth_cap_ses(struct ceph_inode_info *ci, struct ceph_mds_session *session); /* * we keep buffered readdir results attached to file->private_data */ #define CEPH_F_SYNC … #define CEPH_F_ATEND … struct ceph_file_info { … }; struct ceph_dir_file_info { … }; struct ceph_rw_context { … }; #define CEPH_DEFINE_RW_CONTEXT(_name, _caps) … static inline void ceph_add_rw_context(struct ceph_file_info *cf, struct ceph_rw_context *ctx) { … } static inline void ceph_del_rw_context(struct ceph_file_info *cf, struct ceph_rw_context *ctx) { … } static inline struct ceph_rw_context* ceph_find_rw_context(struct ceph_file_info *cf) { … } struct ceph_readdir_cache_control { … }; /* * A "snap realm" describes a subset of the file hierarchy sharing * the same set of snapshots that apply to it. The realms themselves * are organized into a hierarchy, such that children inherit (some of) * the snapshots of their parents. * * All inodes within the realm that have capabilities are linked into a * per-realm list. */ struct ceph_snap_realm { … }; static inline int default_congestion_kb(void) { … } /* super.c */ extern int ceph_force_reconnect(struct super_block *sb); /* snap.c */ struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, u64 ino); extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, struct ceph_snap_realm *realm); extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, struct ceph_snap_realm *realm); extern int ceph_update_snap_trace(struct ceph_mds_client *m, void *p, void *e, bool deletion, struct ceph_snap_realm **realm_ret); void ceph_change_snap_realm(struct inode *inode, struct ceph_snap_realm *realm); extern void ceph_handle_snap(struct ceph_mds_client *mdsc, struct ceph_mds_session *session, struct ceph_msg *msg); extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, struct ceph_cap_snap *capsnap); extern void ceph_cleanup_global_and_empty_realms(struct ceph_mds_client *mdsc); extern struct ceph_snapid_map *ceph_get_snapid_map(struct ceph_mds_client *mdsc, u64 snap); extern void ceph_put_snapid_map(struct ceph_mds_client* mdsc, struct ceph_snapid_map *sm); extern void ceph_trim_snapid_map(struct ceph_mds_client *mdsc); extern void ceph_cleanup_snapid_map(struct ceph_mds_client *mdsc); void ceph_umount_begin(struct super_block *sb); /* * a cap_snap is "pending" if it is still awaiting an in-progress * sync write (that may/may not still update size, mtime, etc.). */ static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) { … } /* inode.c */ struct ceph_mds_reply_info_in; struct ceph_mds_reply_dirfrag; struct ceph_acl_sec_ctx; extern const struct inode_operations ceph_file_iops; extern struct inode *ceph_alloc_inode(struct super_block *sb); extern void ceph_evict_inode(struct inode *inode); extern void ceph_free_inode(struct inode *inode); struct inode *ceph_new_inode(struct inode *dir, struct dentry *dentry, umode_t *mode, struct ceph_acl_sec_ctx *as_ctx); void ceph_as_ctx_to_req(struct ceph_mds_request *req, struct ceph_acl_sec_ctx *as_ctx); extern struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino, struct inode *newino); extern struct inode *ceph_get_snapdir(struct inode *parent); extern int ceph_fill_file_size(struct inode *inode, int issued, u32 truncate_seq, u64 truncate_size, u64 size); extern void ceph_fill_file_time(struct inode *inode, int issued, u64 time_warp_seq, struct timespec64 *ctime, struct timespec64 *mtime, struct timespec64 *atime); extern int ceph_fill_inode(struct inode *inode, struct page *locked_page, struct ceph_mds_reply_info_in *iinfo, struct ceph_mds_reply_dirfrag *dirinfo, struct ceph_mds_session *session, int cap_fmode, struct ceph_cap_reservation *caps_reservation); extern int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req); extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, struct ceph_mds_session *session); extern int ceph_inode_holds_cap(struct inode *inode, int mask); extern bool ceph_inode_set_size(struct inode *inode, loff_t size); extern void __ceph_do_pending_vmtruncate(struct inode *inode); void ceph_queue_inode_work(struct inode *inode, int work_bit); static inline void ceph_queue_vmtruncate(struct inode *inode) { … } static inline void ceph_queue_invalidate(struct inode *inode) { … } static inline void ceph_queue_writeback(struct inode *inode) { … } static inline void ceph_queue_check_caps(struct inode *inode) { … } static inline void ceph_queue_flush_snaps(struct inode *inode) { … } extern int ceph_try_to_choose_auth_mds(struct inode *inode, int mask); extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, int mask, bool force); static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) { … } extern int ceph_permission(struct mnt_idmap *idmap, struct inode *inode, int mask); struct ceph_iattr { … }; extern int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode, struct iattr *attr, struct ceph_iattr *cia); extern int ceph_setattr(struct mnt_idmap *idmap, struct dentry *dentry, struct iattr *attr); extern int ceph_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, unsigned int flags); void ceph_inode_shutdown(struct inode *inode); static inline bool ceph_inode_is_shutdown(struct inode *inode) { … } /* xattr.c */ int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); int ceph_do_getvxattr(struct inode *inode, const char *name, void *value, size_t size); ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); extern struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci); extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); extern const struct xattr_handler * const ceph_xattr_handlers[]; struct ceph_acl_sec_ctx { … }; #ifdef CONFIG_SECURITY extern bool ceph_security_xattr_deadlock(struct inode *in); extern bool ceph_security_xattr_wanted(struct inode *in); #else static inline bool ceph_security_xattr_deadlock(struct inode *in) { return false; } static inline bool ceph_security_xattr_wanted(struct inode *in) { return false; } #endif #ifdef CONFIG_CEPH_FS_SECURITY_LABEL extern int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, struct ceph_acl_sec_ctx *ctx); static inline void ceph_security_invalidate_secctx(struct inode *inode) { … } #else static inline int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, struct ceph_acl_sec_ctx *ctx) { return 0; } static inline void ceph_security_invalidate_secctx(struct inode *inode) { } #endif void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx); /* acl.c */ #ifdef CONFIG_CEPH_FS_POSIX_ACL struct posix_acl *ceph_get_acl(struct inode *, int, bool); int ceph_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, struct posix_acl *acl, int type); int ceph_pre_init_acls(struct inode *dir, umode_t *mode, struct ceph_acl_sec_ctx *as_ctx); void ceph_init_inode_acls(struct inode *inode, struct ceph_acl_sec_ctx *as_ctx); static inline void ceph_forget_all_cached_acls(struct inode *inode) { … } #else #define ceph_get_acl … #define ceph_set_acl … static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, struct ceph_acl_sec_ctx *as_ctx) { return 0; } static inline void ceph_init_inode_acls(struct inode *inode, struct ceph_acl_sec_ctx *as_ctx) { } static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) { return 0; } static inline void ceph_forget_all_cached_acls(struct inode *inode) { } #endif /* caps.c */ extern const char *ceph_cap_string(int c); extern void ceph_handle_caps(struct ceph_mds_session *session, struct ceph_msg *msg); extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, struct ceph_cap_reservation *ctx); extern void ceph_add_cap(struct inode *inode, struct ceph_mds_session *session, u64 cap_id, unsigned issued, unsigned wanted, unsigned cap, unsigned seq, u64 realmino, int flags, struct ceph_cap **new_cap); extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); extern void ceph_remove_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap, bool queue_release); extern void __ceph_remove_caps(struct ceph_inode_info *ci); extern void ceph_put_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap); extern int ceph_is_any_caps(struct inode *inode); extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); extern int ceph_fsync(struct file *file, loff_t start, loff_t end, int datasync); extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, struct ceph_mds_session *session); extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, struct ceph_mds_session *session); void ceph_kick_flushing_inode_caps(struct ceph_mds_session *session, struct ceph_inode_info *ci); extern struct ceph_cap *__get_cap_for_mds(struct ceph_inode_info *ci, int mds); extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, int mds); extern void ceph_take_cap_refs(struct ceph_inode_info *ci, int caps, bool snap_rwsem_locked); extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); extern void ceph_put_cap_refs_async(struct ceph_inode_info *ci, int had); extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, struct ceph_snap_context *snapc); extern void __ceph_remove_capsnap(struct inode *inode, struct ceph_cap_snap *capsnap, bool *wake_ci, bool *wake_mdsc); extern void ceph_remove_capsnap(struct inode *inode, struct ceph_cap_snap *capsnap, bool *wake_ci, bool *wake_mdsc); extern void ceph_flush_snaps(struct ceph_inode_info *ci, struct ceph_mds_session **psession); extern bool __ceph_should_report_size(struct ceph_inode_info *ci); extern void ceph_check_caps(struct ceph_inode_info *ci, int flags); extern unsigned long ceph_check_delayed_caps(struct ceph_mds_client *mdsc); extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); extern int ceph_drop_caps_for_unlink(struct inode *inode); extern int ceph_encode_inode_release(void **p, struct inode *inode, int mds, int drop, int unless, int force); extern int ceph_encode_dentry_release(void **p, struct dentry *dn, struct inode *dir, int mds, int drop, int unless); extern int __ceph_get_caps(struct inode *inode, struct ceph_file_info *fi, int need, int want, loff_t endoff, int *got); extern int ceph_get_caps(struct file *filp, int need, int want, loff_t endoff, int *got); extern int ceph_try_get_caps(struct inode *inode, int need, int want, bool nonblock, int *got); /* for counting open files by mode */ extern void ceph_get_fmode(struct ceph_inode_info *ci, int mode, int count); extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode, int count); extern void __ceph_touch_fmode(struct ceph_inode_info *ci, struct ceph_mds_client *mdsc, int fmode); /* addr.c */ extern const struct address_space_operations ceph_aops; extern const struct netfs_request_ops ceph_netfs_ops; extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); extern int ceph_uninline_data(struct file *file); extern int ceph_pool_perm_check(struct inode *inode, int need); extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); int ceph_purge_inode_cap(struct inode *inode, struct ceph_cap *cap, bool *invalidate); static inline bool ceph_has_inline_data(struct ceph_inode_info *ci) { … } /* file.c */ extern const struct file_operations ceph_file_fops; extern int ceph_renew_caps(struct inode *inode, int fmode); extern int ceph_open(struct inode *inode, struct file *file); extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, struct file *file, unsigned flags, umode_t mode); extern ssize_t __ceph_sync_read(struct inode *inode, loff_t *ki_pos, struct iov_iter *to, int *retry_op, u64 *last_objver); extern int ceph_release(struct inode *inode, struct file *filp); extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, char *data, size_t len); /* dir.c */ extern const struct file_operations ceph_dir_fops; extern const struct file_operations ceph_snapdir_fops; extern const struct inode_operations ceph_dir_iops; extern const struct inode_operations ceph_snapdir_iops; extern const struct dentry_operations ceph_dentry_ops; extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order); extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); extern struct dentry *ceph_handle_snapdir(struct ceph_mds_request *req, struct dentry *dentry); extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, struct dentry *dentry, int err); extern void __ceph_dentry_lease_touch(struct ceph_dentry_info *di); extern void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di); extern void ceph_invalidate_dentry_lease(struct dentry *dentry); extern int ceph_trim_dentries(struct ceph_mds_client *mdsc); extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl); /* ioctl.c */ extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); /* export.c */ extern const struct export_operations ceph_export_ops; struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino); /* locks.c */ extern __init void ceph_flock_init(void); extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); extern int ceph_encode_locks_to_buffer(struct inode *inode, struct ceph_filelock *flocks, int num_fcntl_locks, int num_flock_locks); extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, struct ceph_pagelist *pagelist, int num_fcntl_locks, int num_flock_locks); /* debugfs.c */ extern void ceph_fs_debugfs_init(struct ceph_fs_client *client); extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); /* quota.c */ enum quota_get_realm { … }; static inline bool __ceph_has_quota(struct ceph_inode_info *ci, enum quota_get_realm which) { … } extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc); static inline void __ceph_update_quota(struct ceph_inode_info *ci, u64 max_bytes, u64 max_files) { … } static inline int __ceph_sparse_read_ext_count(struct inode *inode, u64 len) { … } extern void ceph_handle_quota(struct ceph_mds_client *mdsc, struct ceph_mds_session *session, struct ceph_msg *msg); extern bool ceph_quota_is_max_files_exceeded(struct inode *inode); extern bool ceph_quota_is_same_realm(struct inode *old, struct inode *new); extern bool ceph_quota_is_max_bytes_exceeded(struct inode *inode, loff_t newlen); extern bool ceph_quota_is_max_bytes_approaching(struct inode *inode, loff_t newlen); extern bool ceph_quota_update_statfs(struct ceph_fs_client *fsc, struct kstatfs *buf); extern void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc); bool ceph_inc_mds_stopping_blocker(struct ceph_mds_client *mdsc, struct ceph_mds_session *session); void ceph_dec_mds_stopping_blocker(struct ceph_mds_client *mdsc); bool ceph_inc_osd_stopping_blocker(struct ceph_mds_client *mdsc); void ceph_dec_osd_stopping_blocker(struct ceph_mds_client *mdsc); #endif /* _FS_CEPH_SUPER_H */
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