diff options
Diffstat (limited to 'fs/ceph/super.h')
| -rw-r--r-- | fs/ceph/super.h | 837 |
1 files changed, 640 insertions, 197 deletions
diff --git a/fs/ceph/super.h b/fs/ceph/super.h index f02a2225fe42..a1f781c46b41 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -1,9 +1,11 @@ +/* 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/unaligned.h> #include <linux/backing-dev.h> #include <linux/completion.h> #include <linux/exportfs.h> @@ -15,21 +17,21 @@ #include <linux/slab.h> #include <linux/posix_acl.h> #include <linux/refcount.h> - -#include <linux/ceph/libceph.h> - -#ifdef CONFIG_CEPH_FSCACHE +#include <linux/security.h> +#include <linux/netfs.h> #include <linux/fscache.h> -#endif +#include <linux/hashtable.h> -/* f_type in struct statfs */ -#define CEPH_SUPER_MAGIC 0x00c36400 +#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 22 /* 4 MB */ #define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) +#define CEPH_4K_BLOCK_SHIFT 12 /* 4 KB */ +#define CEPH_MOUNT_OPT_CLEANRECOVER (1<<1) /* auto reonnect (clean mode) after blocklisted */ #define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ #define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ #define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ @@ -38,32 +40,56 @@ #define CEPH_MOUNT_OPT_FSCACHE (1<<10) /* use fscache */ #define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11) /* no pool permission check */ #define CEPH_MOUNT_OPT_MOUNTWAIT (1<<12) /* mount waits if no mds is up */ +#define CEPH_MOUNT_OPT_NOQUOTADF (1<<13) /* no root dir quota in statfs */ +#define CEPH_MOUNT_OPT_NOCOPYFROM (1<<14) /* don't use RADOS 'copy-from' op */ +#define CEPH_MOUNT_OPT_ASYNC_DIROPS (1<<15) /* allow async directory ops */ +#define CEPH_MOUNT_OPT_NOPAGECACHE (1<<16) /* bypass pagecache altogether */ +#define CEPH_MOUNT_OPT_SPARSEREAD (1<<17) /* always do sparse reads */ -#define CEPH_MOUNT_OPT_DEFAULT CEPH_MOUNT_OPT_DCACHE +#define CEPH_MOUNT_OPT_DEFAULT \ + (CEPH_MOUNT_OPT_DCACHE | \ + CEPH_MOUNT_OPT_NOCOPYFROM | \ + CEPH_MOUNT_OPT_ASYNC_DIROPS) #define ceph_set_mount_opt(fsc, opt) \ - (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt; + (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt +#define ceph_clear_mount_opt(fsc, opt) \ + (fsc)->mount_options->flags &= ~CEPH_MOUNT_OPT_##opt #define ceph_test_mount_opt(fsc, opt) \ (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) -#define CEPH_RSIZE_DEFAULT (64*1024*1024) /* max read size */ +/* max size of osd read request, limited by libceph */ +#define CEPH_MAX_READ_SIZE CEPH_MSG_MAX_DATA_LEN +/* osd has a configurable limitation of max write size. + * CEPH_MSG_MAX_DATA_LEN should be small enough. */ +#define CEPH_MAX_WRITE_SIZE CEPH_MSG_MAX_DATA_LEN #define CEPH_RASIZE_DEFAULT (8192*1024) /* max readahead */ #define CEPH_MAX_READDIR_DEFAULT 1024 #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) #define CEPH_SNAPDIRNAME_DEFAULT ".snap" +/* + * 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 5 /* cap release delay */ +#define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */ + struct ceph_mount_options { - int flags; - int sb_flags; - - int wsize; /* max write size */ - int rsize; /* max read size */ - int rasize; /* max readahead */ - int congestion_kb; /* max writeback in flight */ - int caps_wanted_delay_min, caps_wanted_delay_max; - int cap_release_safety; - int max_readdir; /* max readdir result (entires) */ - int max_readdir_bytes; /* max readdir result (bytes) */ + unsigned int flags; + + unsigned int wsize; /* max write size */ + unsigned int rsize; /* max read size */ + unsigned int rasize; /* max readahead */ + unsigned int congestion_kb; /* max writeback in flight */ + unsigned int caps_wanted_delay_min, caps_wanted_delay_max; + int caps_max; + unsigned int max_readdir; /* max readdir result (entries) */ + unsigned int max_readdir_bytes; /* max readdir result (bytes) */ + + bool new_dev_syntax; /* * everything above this point can be memcmp'd; everything below @@ -72,42 +98,85 @@ struct ceph_mount_options { char *snapdir_name; /* default ".snap" */ char *mds_namespace; /* default NULL */ - char *server_path; /* default "/" */ + char *server_path; /* default NULL (means "/") */ char *fscache_uniq; /* default NULL */ + char *mon_addr; + struct fscrypt_dummy_policy dummy_enc_policy; }; +/* + * Check if the mds namespace in ceph_mount_options matches + * the passed in namespace string. First time match (when + * ->mds_namespace is NULL) is treated specially, since + * ->mds_namespace needs to be initialized by the caller. + */ +static inline int namespace_equals(struct ceph_mount_options *fsopt, + const char *namespace, size_t len) +{ + return !(fsopt->mds_namespace && + (strlen(fsopt->mds_namespace) != len || + strncmp(fsopt->mds_namespace, namespace, len))); +} + +/* mount state */ +enum { + CEPH_MOUNT_MOUNTING, + CEPH_MOUNT_MOUNTED, + CEPH_MOUNT_UNMOUNTING, + CEPH_MOUNT_UNMOUNTED, + CEPH_MOUNT_SHUTDOWN, + CEPH_MOUNT_RECOVER, + CEPH_MOUNT_FENCE_IO, +}; + +#define CEPH_ASYNC_CREATE_CONFLICT_BITS 8 + struct ceph_fs_client { struct super_block *sb; + struct list_head metric_wakeup; + struct ceph_mount_options *mount_options; struct ceph_client *client; - unsigned long mount_state; - int min_caps; /* min caps i added */ + int mount_state; + + bool blocklisted; + + bool have_copy_from2; + + u32 filp_gen; + loff_t max_file_size; struct ceph_mds_client *mdsc; - /* writeback */ - mempool_t *wb_pagevec_pool; - struct workqueue_struct *wb_wq; - struct workqueue_struct *pg_inv_wq; - struct workqueue_struct *trunc_wq; atomic_long_t writeback_count; + bool write_congested; + + struct workqueue_struct *inode_wq; + struct workqueue_struct *cap_wq; + + DECLARE_HASHTABLE(async_unlink_conflict, CEPH_ASYNC_CREATE_CONFLICT_BITS); + spinlock_t async_unlink_conflict_lock; #ifdef CONFIG_DEBUG_FS struct dentry *debugfs_dentry_lru, *debugfs_caps; struct dentry *debugfs_congestion_kb; struct dentry *debugfs_bdi; struct dentry *debugfs_mdsc, *debugfs_mdsmap; + struct dentry *debugfs_status; struct dentry *debugfs_mds_sessions; + struct dentry *debugfs_metrics_dir; #endif #ifdef CONFIG_CEPH_FSCACHE - struct fscache_cookie *fscache; + struct fscache_volume *fscache; +#endif +#ifdef CONFIG_FS_ENCRYPTION + struct fscrypt_dummy_policy fsc_dummy_enc_policy; #endif }; - /* * File i/o capability. This tracks shared state with the metadata * server that allows us to cache or writeback attributes or to read @@ -130,7 +199,8 @@ struct ceph_cap { int issued; /* latest, from the mds */ int implemented; /* implemented superset of issued (for revocation) */ - int mds, mds_wanted; + int mds; /* mds index for this cap */ + int mds_wanted; /* caps wanted from this mds */ }; /* caps to release */ struct { @@ -144,14 +214,16 @@ struct ceph_cap { struct list_head caps_item; }; -#define CHECK_CAPS_NODELAY 1 /* do not delay any further */ -#define CHECK_CAPS_AUTHONLY 2 /* only check auth cap */ -#define CHECK_CAPS_FLUSH 4 /* flush any dirty caps */ +#define CHECK_CAPS_AUTHONLY 1 /* only check auth cap */ +#define CHECK_CAPS_FLUSH 2 /* flush any dirty caps */ +#define CHECK_CAPS_NOINVAL 4 /* don't invalidate pagecache */ +#define CHECK_CAPS_FLUSH_FORCE 8 /* force flush any caps */ struct ceph_cap_flush { u64 tid; - int caps; /* 0 means capsnap */ + int caps; bool wake; /* wake up flush waiters when finish ? */ + bool is_capsnap; /* true means capsnap */ struct list_head g_list; // global struct list_head i_list; // per inode }; @@ -179,7 +251,8 @@ struct ceph_cap_snap { u64 xattr_version; u64 size; - struct timespec mtime, atime, ctime; + u64 change_attr; + struct timespec64 mtime, atime, ctime, btime; u64 time_warp_seq; u64 truncate_size; u32 truncate_seq; @@ -194,7 +267,7 @@ static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) if (refcount_dec_and_test(&capsnap->nref)) { if (capsnap->xattr_blob) ceph_buffer_put(capsnap->xattr_blob); - kfree(capsnap); + kmem_cache_free(ceph_cap_snap_cachep, capsnap); } } @@ -242,16 +315,28 @@ struct ceph_inode_xattr { * Ceph dentry state */ struct ceph_dentry_info { + struct dentry *dentry; struct ceph_mds_session *lease_session; - u32 lease_gen, lease_shared_gen; + struct list_head lease_list; + struct hlist_node hnode; + unsigned long flags; + int lease_shared_gen; + u32 lease_gen; u32 lease_seq; unsigned long lease_renew_after, lease_renew_from; - struct list_head lru; - struct dentry *dentry; unsigned long time; u64 offset; }; +#define CEPH_DENTRY_REFERENCED (1 << 0) +#define CEPH_DENTRY_LEASE_LIST (1 << 1) +#define CEPH_DENTRY_SHRINK_LIST (1 << 2) +#define CEPH_DENTRY_PRIMARY_LINK (1 << 3) +#define CEPH_DENTRY_ASYNC_UNLINK_BIT (4) +#define CEPH_DENTRY_ASYNC_UNLINK (1 << CEPH_DENTRY_ASYNC_UNLINK_BIT) +#define CEPH_DENTRY_ASYNC_CREATE_BIT (5) +#define CEPH_DENTRY_ASYNC_CREATE (1 << CEPH_DENTRY_ASYNC_CREATE_BIT) + struct ceph_inode_xattrs_info { /* * (still encoded) xattr blob. we avoid the overhead of parsing @@ -274,6 +359,7 @@ struct ceph_inode_xattrs_info { * Ceph inode. */ struct ceph_inode_info { + struct netfs_inode netfs; /* Netfslib context and vfs inode */ struct ceph_vino i_vino; /* ceph ino + snap */ spinlock_t i_ceph_lock; @@ -282,20 +368,26 @@ struct ceph_inode_info { u64 i_inline_version; u32 i_time_warp_seq; - unsigned i_ceph_flags; + unsigned long i_ceph_flags; atomic64_t i_release_count; atomic64_t i_ordered_count; atomic64_t i_complete_seq[2]; struct ceph_dir_layout i_dir_layout; struct ceph_file_layout i_layout; + struct ceph_file_layout i_cached_layout; // for async creates char *i_symlink; /* for dirs */ - struct timespec i_rctime; - u64 i_rbytes, i_rfiles, i_rsubdirs; + struct timespec64 i_rctime; + u64 i_rbytes, i_rfiles, i_rsubdirs, i_rsnaps; u64 i_files, i_subdirs; + /* quotas */ + u64 i_max_bytes, i_max_files; + + s32 i_dir_pin; + struct rb_root i_fragtree; int i_fragtree_nsplits; struct mutex i_fragtree_mutex; @@ -307,14 +399,31 @@ struct ceph_inode_info { struct rb_root i_caps; /* cap list */ struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ - struct list_head i_dirty_item, i_flushing_item; + + /* + * Link to the auth cap's session's s_cap_dirty list. s_cap_dirty + * is protected by the mdsc->cap_dirty_lock, but each individual item + * is also protected by the inode's i_ceph_lock. Walking s_cap_dirty + * requires the mdsc->cap_dirty_lock. List presence for an item can + * be tested under the i_ceph_lock. Changing anything requires both. + */ + struct list_head i_dirty_item; + + /* + * Link to session's s_cap_flushing list. Protected in a similar + * fashion to i_dirty_item, but also by the s_mutex for changes. The + * s_cap_flushing list can be walked while holding either the s_mutex + * or msdc->cap_dirty_lock. List presence can also be checked while + * holding the i_ceph_lock for this inode. + */ + struct list_head i_flushing_item; + /* we need to track cap writeback on a per-cap-bit basis, to allow * overlapping, pipelined cap flushes to the mds. we can probably * reduce the tid to 8 bits if we're concerned about inode size. */ struct ceph_cap_flush *i_prealloc_cap_flush; struct list_head i_cap_flush_list; wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ - unsigned long i_hold_caps_min; /* jiffies */ unsigned long i_hold_caps_max; /* jiffies */ struct list_head i_cap_delay_list; /* for delayed cap release to mds */ struct ceph_cap_reservation i_cap_migration_resv; @@ -323,12 +432,19 @@ struct ceph_inode_info { dirty|flushing caps */ unsigned i_snap_caps; /* cap bits for snapped files */ + unsigned long i_last_rd; + unsigned long i_last_wr; int i_nr_by_mode[CEPH_FILE_MODE_BITS]; /* open file counts */ struct mutex i_truncate_mutex; u32 i_truncate_seq; /* last truncate to smaller size */ u64 i_truncate_size; /* and the size we last truncated down to */ int i_truncate_pending; /* still need to call vmtruncate */ + /* + * For none fscrypt case it equals to i_truncate_size or it will + * equals to fscrypt_file_size + */ + u64 i_truncate_pagecache_size; u64 i_max_size; /* max file size authorized by mds */ u64 i_reported_size; /* (max_)size reported to or requested of mds */ @@ -337,9 +453,10 @@ struct ceph_inode_info { /* held references to caps */ int i_pin_ref; - int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref; + int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref, i_fx_ref; int i_wrbuffer_ref, i_wrbuffer_ref_head; - u32 i_shared_gen; /* increment each time we get FILE_SHARED */ + atomic_t i_filelock_ref; + atomic_t i_shared_gen; /* increment each time we get FILE_SHARED */ u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ @@ -347,52 +464,77 @@ struct ceph_inode_info { struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ spinlock_t i_unsafe_lock; - struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ - int i_snap_realm_counter; /* snap realm (if caps) */ + union { + struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ + struct ceph_snapid_map *i_snapid_map; /* snapid -> dev_t */ + }; struct list_head i_snap_realm_item; struct list_head i_snap_flush_item; + struct timespec64 i_btime; + struct timespec64 i_snap_btime; + + struct work_struct i_work; + unsigned long i_work_mask; + +#ifdef CONFIG_FS_ENCRYPTION + struct fscrypt_inode_info *i_crypt_info; + u32 fscrypt_auth_len; + u32 fscrypt_file_len; + u8 *fscrypt_auth; + u8 *fscrypt_file; +#endif +}; - struct work_struct i_wb_work; /* writeback work */ - struct work_struct i_pg_inv_work; /* page invalidation work */ +struct ceph_netfs_request_data { + int caps; - struct work_struct i_vmtruncate_work; + /* + * Maximum size of a file readahead request. + * The fadvise could update the bdi's default ra_pages. + */ + unsigned int file_ra_pages; -#ifdef CONFIG_CEPH_FSCACHE - struct fscache_cookie *fscache; - u32 i_fscache_gen; -#endif - struct inode vfs_inode; /* at end */ + /* Set it if fadvise disables file readahead entirely */ + bool file_ra_disabled; }; -static inline struct ceph_inode_info *ceph_inode(struct inode *inode) +static inline struct ceph_inode_info * +ceph_inode(const struct inode *inode) { - return container_of(inode, struct ceph_inode_info, vfs_inode); + return container_of(inode, struct ceph_inode_info, netfs.inode); } -static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode) +static inline struct ceph_fs_client * +ceph_inode_to_fs_client(const struct inode *inode) { return (struct ceph_fs_client *)inode->i_sb->s_fs_info; } -static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb) +static inline struct ceph_fs_client * +ceph_sb_to_fs_client(const struct super_block *sb) { return (struct ceph_fs_client *)sb->s_fs_info; } -static inline struct ceph_vino ceph_vino(struct inode *inode) +static inline struct ceph_mds_client * +ceph_sb_to_mdsc(const struct super_block *sb) +{ + return (struct ceph_mds_client *)ceph_sb_to_fs_client(sb)->mdsc; +} + +static inline struct ceph_client * +ceph_inode_to_client(const struct inode *inode) +{ + return (struct ceph_client *)ceph_inode_to_fs_client(inode)->client; +} + +static inline struct ceph_vino +ceph_vino(const struct inode *inode) { return ceph_inode(inode)->i_vino; } -/* - * ino_t is <64 bits on many architectures, blech. - * - * i_ino (kernel inode) st_ino (userspace) - * i386 32 32 - * x86_64+ino32 64 32 - * x86_64 64 64 - */ -static inline u32 ceph_ino_to_ino32(__u64 vino) +static inline u32 ceph_ino_to_ino32(u64 vino) { u32 ino = vino & 0xffffffff; ino ^= vino >> 32; @@ -402,35 +544,18 @@ static inline u32 ceph_ino_to_ino32(__u64 vino) } /* - * kernel i_ino value + * 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(struct ceph_vino vino) +static inline ino_t ceph_vino_to_ino_t(struct ceph_vino vino) { -#if BITS_PER_LONG == 32 - return ceph_ino_to_ino32(vino.ino); -#else + if (sizeof(ino_t) == sizeof(u32)) + return ceph_ino_to_ino32(vino.ino); return (ino_t)vino.ino; -#endif } -/* - * user-visible ino (stat, filldir) - */ -#if BITS_PER_LONG == 32 -static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) -{ - return ino; -} -#else -static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) -{ - if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32)) - ino = ceph_ino_to_ino32(ino); - return ino; -} -#endif - - /* for printf-style formatting */ #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap @@ -438,11 +563,34 @@ static inline u64 ceph_ino(struct inode *inode) { return ceph_inode(inode)->i_vino.ino; } + static inline u64 ceph_snap(struct inode *inode) { return ceph_inode(inode)->i_vino.snap; } +/** + * 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) +{ + if (unlikely(ceph_test_mount_opt(ceph_sb_to_fs_client(sb), INO32))) + return ceph_ino_to_ino32(ino); + return ino; +} + +static inline u64 ceph_present_inode(struct inode *inode) +{ + return ceph_present_ino(inode->i_sb, ceph_ino(inode)); +} + static inline int ceph_ino_compare(struct inode *inode, void *data) { struct ceph_vino *pvino = (struct ceph_vino *)data; @@ -451,11 +599,44 @@ static inline int ceph_ino_compare(struct inode *inode, void *data) ci->i_vino.snap == pvino->snap; } +/* + * 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 0x100 +#define CEPH_NUM_STRAY 10 +#define CEPH_MDS_INO_MDSDIR_OFFSET (1 * CEPH_MAX_MDS) +#define CEPH_MDS_INO_LOG_OFFSET (2 * CEPH_MAX_MDS) +#define CEPH_INO_SYSTEM_BASE ((6*CEPH_MAX_MDS) + (CEPH_MAX_MDS * CEPH_NUM_STRAY)) + +static inline bool ceph_vino_is_reserved(const struct ceph_vino vino) +{ + if (vino.ino >= CEPH_INO_SYSTEM_BASE || + vino.ino < CEPH_MDS_INO_MDSDIR_OFFSET) + return false; + + /* Don't warn on mdsdirs */ + WARN_RATELIMIT(vino.ino >= CEPH_MDS_INO_LOG_OFFSET, + "Attempt to access reserved inode number 0x%llx", + vino.ino); + return true; +} + static inline struct inode *ceph_find_inode(struct super_block *sb, struct ceph_vino vino) { - ino_t t = ceph_vino_to_ino(vino); - return ilookup5(sb, t, ceph_ino_compare, &vino); + if (ceph_vino_is_reserved(vino)) + return NULL; + + /* + * NB: The hashval will be run through the fs/inode.c hash function + * anyway, so there is no need to squash the inode number down to + * 32-bits first. Just use low-order bits on arches with 32-bit long. + */ + return ilookup5(sb, (unsigned long)vino.ino, ceph_ino_compare, &vino); } @@ -463,17 +644,31 @@ static inline struct inode *ceph_find_inode(struct super_block *sb, * Ceph inode. */ #define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ -#define CEPH_I_NODELAY (1 << 1) /* do not delay cap release */ #define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ -#define CEPH_I_NOFLUSH (1 << 3) /* do not flush dirty caps */ -#define CEPH_I_POOL_PERM (1 << 4) /* pool rd/wr bits are valid */ -#define CEPH_I_POOL_RD (1 << 5) /* can read from pool */ -#define CEPH_I_POOL_WR (1 << 6) /* can write to pool */ -#define CEPH_I_SEC_INITED (1 << 7) /* security initialized */ -#define CEPH_I_CAP_DROPPED (1 << 8) /* caps were forcibly dropped */ -#define CEPH_I_KICK_FLUSH (1 << 9) /* kick flushing caps */ -#define CEPH_I_FLUSH_SNAPS (1 << 10) /* need flush snapss */ -#define CEPH_I_ERROR_WRITE (1 << 11) /* have seen write errors */ +#define CEPH_I_POOL_PERM (1 << 3) /* pool rd/wr bits are valid */ +#define CEPH_I_POOL_RD (1 << 4) /* can read from pool */ +#define CEPH_I_POOL_WR (1 << 5) /* can write to pool */ +#define CEPH_I_SEC_INITED (1 << 6) /* security initialized */ +#define CEPH_I_KICK_FLUSH (1 << 7) /* kick flushing caps */ +#define CEPH_I_FLUSH_SNAPS (1 << 8) /* need flush snapss */ +#define CEPH_I_ERROR_WRITE (1 << 9) /* have seen write errors */ +#define CEPH_I_ERROR_FILELOCK (1 << 10) /* have seen file lock errors */ +#define CEPH_I_ODIRECT_BIT (11) /* inode in direct I/O mode */ +#define CEPH_I_ODIRECT (1 << CEPH_I_ODIRECT_BIT) +#define CEPH_ASYNC_CREATE_BIT (12) /* async create in flight for this */ +#define CEPH_I_ASYNC_CREATE (1 << CEPH_ASYNC_CREATE_BIT) +#define CEPH_I_SHUTDOWN (1 << 13) /* inode is no longer usable */ +#define CEPH_I_ASYNC_CHECK_CAPS (1 << 14) /* check caps immediately after async + creating finishes */ + +/* + * Masks of ceph inode work. + */ +#define CEPH_I_WORK_WRITEBACK 0 +#define CEPH_I_WORK_INVALIDATE_PAGES 1 +#define CEPH_I_WORK_VMTRUNCATE 2 +#define CEPH_I_WORK_CHECK_CAPS 3 +#define CEPH_I_WORK_FLUSH_SNAPS 4 /* * We set the ERROR_WRITE bit when we start seeing write errors on an inode @@ -504,7 +699,12 @@ static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, long long release_count, long long ordered_count) { - smp_mb__before_atomic(); + /* + * Makes sure operations that setup readdir cache (update page + * cache and i_size) are strongly ordered w.r.t. the following + * atomic64_set() operations. + */ + smp_mb(); atomic64_set(&ci->i_complete_seq[0], release_count); atomic64_set(&ci->i_complete_seq[1], ordered_count); } @@ -562,7 +762,7 @@ 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(struct dentry *dentry) +static inline struct ceph_dentry_info *ceph_dentry(const struct dentry *dentry) { return (struct ceph_dentry_info *)dentry->d_fsdata; } @@ -577,6 +777,8 @@ 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); @@ -589,12 +791,12 @@ static inline int ceph_caps_issued(struct ceph_inode_info *ci) return issued; } -static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, - int touch) +static inline int ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, + int mask, int touch) { int r; spin_lock(&ci->i_ceph_lock); - r = __ceph_caps_issued_mask(ci, mask, touch); + r = __ceph_caps_issued_mask_metric(ci, mask, touch); spin_unlock(&ci->i_ceph_lock); return r; } @@ -610,35 +812,31 @@ extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, 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); -extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); - -/* - * wanted, by virtue of open file modes AND cap refs (buffered/cached data) - */ -static inline int __ceph_caps_wanted(struct ceph_inode_info *ci) +static inline bool __ceph_is_file_opened(struct ceph_inode_info *ci) { - int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci); - if (w & CEPH_CAP_FILE_BUFFER) - w |= CEPH_CAP_FILE_EXCL; /* we want EXCL if dirty data */ - return w; + return ci->i_nr_by_mode[0]; } +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_min_caps(struct ceph_mds_client *mdsc, int delta); -extern void ceph_reserve_caps(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 int ceph_unreserve_caps(struct ceph_mds_client *mdsc, +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); @@ -652,6 +850,15 @@ struct ceph_file_info { short fmode; /* initialized on open */ short flags; /* CEPH_F_* */ + spinlock_t rw_contexts_lock; + struct list_head rw_contexts; + + u32 filp_gen; +}; + +struct ceph_dir_file_info { + struct ceph_file_info file_info; + /* readdir: position within the dir */ u32 frag; struct ceph_mds_request *last_readdir; @@ -668,8 +875,51 @@ struct ceph_file_info { int dir_info_len; }; +struct ceph_rw_context { + struct list_head list; + struct task_struct *thread; + int caps; +}; + +#define CEPH_DEFINE_RW_CONTEXT(_name, _caps) \ + struct ceph_rw_context _name = { \ + .thread = current, \ + .caps = _caps, \ + } + +static inline void ceph_add_rw_context(struct ceph_file_info *cf, + struct ceph_rw_context *ctx) +{ + spin_lock(&cf->rw_contexts_lock); + list_add(&ctx->list, &cf->rw_contexts); + spin_unlock(&cf->rw_contexts_lock); +} + +static inline void ceph_del_rw_context(struct ceph_file_info *cf, + struct ceph_rw_context *ctx) +{ + spin_lock(&cf->rw_contexts_lock); + list_del(&ctx->list); + spin_unlock(&cf->rw_contexts_lock); +} + +static inline struct ceph_rw_context* +ceph_find_rw_context(struct ceph_file_info *cf) +{ + struct ceph_rw_context *ctx, *found = NULL; + spin_lock(&cf->rw_contexts_lock); + list_for_each_entry(ctx, &cf->rw_contexts, list) { + if (ctx->thread == current) { + found = ctx; + break; + } + } + spin_unlock(&cf->rw_contexts_lock); + return found; +} + struct ceph_readdir_cache_control { - struct page *page; + struct folio *folio; struct dentry **dentries; int index; }; @@ -685,6 +935,7 @@ struct ceph_readdir_cache_control { */ struct ceph_snap_realm { u64 ino; + struct inode *inode; atomic_t nref; struct rb_node node; @@ -705,6 +956,8 @@ struct ceph_snap_realm { struct list_head dirty_item; /* if realm needs new context */ + struct list_head rebuild_item; /* rebuild snap realms _downward_ in hierarchy */ + /* the current set of snaps for this realm */ struct ceph_snap_context *cached_context; @@ -734,7 +987,7 @@ static inline int default_congestion_kb(void) * This allows larger machines to have larger/more transfers. * Limit the default to 256M */ - congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10); + congestion_kb = (16*int_sqrt(totalram_pages())) << (PAGE_SHIFT-10); if (congestion_kb > 256*1024) congestion_kb = 256*1024; @@ -742,7 +995,8 @@ 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); @@ -753,13 +1007,22 @@ extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, 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 void ceph_queue_cap_snap(struct ceph_inode_info *ci); extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, struct ceph_cap_snap *capsnap); -extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); +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 @@ -773,55 +1036,125 @@ 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_destroy_inode(struct inode *inode); -extern int ceph_drop_inode(struct inode *inode); +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 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 timespec *ctime, - struct timespec *mtime, struct timespec *atime); + 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); -extern void ceph_queue_vmtruncate(struct inode *inode); -extern void ceph_queue_invalidate(struct inode *inode); -extern void ceph_queue_writeback(struct inode *inode); +void ceph_queue_inode_work(struct inode *inode, int work_bit); +static inline void ceph_queue_vmtruncate(struct inode *inode) +{ + ceph_queue_inode_work(inode, CEPH_I_WORK_VMTRUNCATE); +} + +static inline void ceph_queue_invalidate(struct inode *inode) +{ + ceph_queue_inode_work(inode, CEPH_I_WORK_INVALIDATE_PAGES); +} + +static inline void ceph_queue_writeback(struct inode *inode) +{ + ceph_queue_inode_work(inode, CEPH_I_WORK_WRITEBACK); +} + +static inline void ceph_queue_check_caps(struct inode *inode) +{ + ceph_queue_inode_work(inode, CEPH_I_WORK_CHECK_CAPS); +} + +static inline void ceph_queue_flush_snaps(struct inode *inode) +{ + ceph_queue_inode_work(inode, CEPH_I_WORK_FLUSH_SNAPS); +} + +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) { return __ceph_do_getattr(inode, NULL, mask, force); } -extern int ceph_permission(struct inode *inode, int mask); -extern int __ceph_setattr(struct inode *inode, struct iattr *attr); -extern int ceph_setattr(struct dentry *dentry, struct iattr *attr); -extern int ceph_getattr(const struct path *path, struct kstat *stat, +extern int ceph_permission(struct mnt_idmap *idmap, + struct inode *inode, int mask); + +struct ceph_iattr { + struct ceph_fscrypt_auth *fscrypt_auth; +}; + +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) +{ + unsigned long flags = READ_ONCE(ceph_inode(inode)->i_ceph_flags); + struct ceph_fs_client *fsc = ceph_inode_to_fs_client(inode); + int state = READ_ONCE(fsc->mount_state); + + return (flags & CEPH_I_SHUTDOWN) || state >= CEPH_MOUNT_SHUTDOWN; +} /* 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 void __ceph_build_xattrs_blob(struct ceph_inode_info *ci); +extern struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci); extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); -extern void __init ceph_xattr_init(void); -extern void ceph_xattr_exit(void); -extern const struct xattr_handler *ceph_xattr_handlers[]; +extern const struct xattr_handler * const ceph_xattr_handlers[]; + +struct ceph_acl_sec_ctx { +#ifdef CONFIG_CEPH_FS_POSIX_ACL + void *default_acl; + void *acl; +#endif +#ifdef CONFIG_CEPH_FS_SECURITY_LABEL + struct lsm_context lsmctx; +#endif +#ifdef CONFIG_FS_ENCRYPTION + struct ceph_fscrypt_auth *fscrypt_auth; +#endif + struct ceph_pagelist *pagelist; +}; #ifdef CONFIG_SECURITY extern bool ceph_security_xattr_deadlock(struct inode *in); @@ -837,21 +1170,36 @@ static inline bool ceph_security_xattr_wanted(struct inode *in) } #endif -/* acl.c */ -struct ceph_acls_info { - void *default_acl; - void *acl; - struct ceph_pagelist *pagelist; -}; +#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) +{ + security_inode_invalidate_secctx(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); -int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type); +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_acls_info *info); -void ceph_init_inode_acls(struct inode *inode, struct ceph_acls_info *info); -void ceph_release_acls_info(struct ceph_acls_info *info); + 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) { @@ -864,20 +1212,13 @@ static inline void ceph_forget_all_cached_acls(struct inode *inode) #define ceph_set_acl NULL static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, - struct ceph_acls_info *info) + struct ceph_acl_sec_ctx *as_ctx) { return 0; } static inline void ceph_init_inode_acls(struct inode *inode, - struct ceph_acls_info *info) -{ -} -static inline void ceph_release_acls_info(struct ceph_acls_info *info) -{ -} -static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) + struct ceph_acl_sec_ctx *as_ctx) { - return 0; } static inline void ceph_forget_all_cached_acls(struct inode *inode) @@ -894,15 +1235,17 @@ 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, - int fmode, unsigned issued, unsigned wanted, + 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 void ceph_queue_caps_release(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); @@ -910,51 +1253,79 @@ 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 int ceph_get_cap_mds(struct inode *inode); +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, - struct ceph_mds_session *session); -extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc); +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 void ceph_flush_cap_releases(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 ceph_inode_info *ci, int need, int want, - loff_t endoff, int *got, struct page **pinned_page); -extern int ceph_try_get_caps(struct ceph_inode_info *ci, - int need, int want, int *got); +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); -extern void ceph_put_fmode(struct ceph_inode_info *ci, int 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 int ceph_mmap(struct file *file, struct vm_area_struct *vma); -extern int ceph_uninline_data(struct file *filp, struct page *locked_page); -extern int ceph_pool_perm_check(struct ceph_inode_info *ci, int need); +extern const struct netfs_request_ops ceph_netfs_ops; +int ceph_mmap_prepare(struct vm_area_desc *desc); +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) +{ + if (ci->i_inline_version == CEPH_INLINE_NONE || + ci->i_inline_version == 1) /* initial version, no data */ + return false; + return true; +} /* file.c */ extern const struct file_operations ceph_file_fops; -extern int ceph_renew_caps(struct inode *inode); +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, - int *opened); + 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); @@ -968,15 +1339,15 @@ 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 int ceph_handle_snapdir(struct ceph_mds_request *req, - struct dentry *dentry, int err); +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_lru_add(struct dentry *dn); -extern void ceph_dentry_lru_touch(struct dentry *dn); -extern void ceph_dentry_lru_del(struct dentry *dn); +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); @@ -985,6 +1356,7 @@ 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); @@ -998,10 +1370,81 @@ extern int ceph_encode_locks_to_buffer(struct inode *inode, extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, struct ceph_pagelist *pagelist, int num_fcntl_locks, int num_flock_locks); -extern int lock_to_ceph_filelock(struct file_lock *fl, struct ceph_filelock *c); /* debugfs.c */ -extern int ceph_fs_debugfs_init(struct ceph_fs_client *client); +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 { + QUOTA_GET_MAX_FILES, + QUOTA_GET_MAX_BYTES, + QUOTA_GET_ANY +}; + +static inline bool __ceph_has_quota(struct ceph_inode_info *ci, + enum quota_get_realm which) +{ + bool has_quota = false; + + switch (which) { + case QUOTA_GET_MAX_BYTES: + has_quota = !!ci->i_max_bytes; + break; + case QUOTA_GET_MAX_FILES: + has_quota = !!ci->i_max_files; + break; + default: + has_quota = !!(ci->i_max_files || ci->i_max_bytes); + } + return has_quota; +} + +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) +{ + bool had_quota, has_quota; + had_quota = __ceph_has_quota(ci, QUOTA_GET_ANY); + ci->i_max_bytes = max_bytes; + ci->i_max_files = max_files; + has_quota = __ceph_has_quota(ci, QUOTA_GET_ANY); + + if (had_quota != has_quota) + ceph_adjust_quota_realms_count(&ci->netfs.inode, has_quota); +} + +static inline int __ceph_sparse_read_ext_count(struct inode *inode, u64 len) +{ + int cnt = 0; + + if (IS_ENCRYPTED(inode)) { + cnt = len >> CEPH_FSCRYPT_BLOCK_SHIFT; + if (cnt > CEPH_SPARSE_EXT_ARRAY_INITIAL) + cnt = 0; + } + + return cnt; +} + +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 */ |