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1295 lines
40 KiB
1295 lines
40 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _FS_CEPH_SUPER_H |
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#define _FS_CEPH_SUPER_H |
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#include <linux/ceph/ceph_debug.h> |
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|
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#include <asm/unaligned.h> |
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#include <linux/backing-dev.h> |
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#include <linux/completion.h> |
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#include <linux/exportfs.h> |
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#include <linux/fs.h> |
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#include <linux/mempool.h> |
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#include <linux/pagemap.h> |
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#include <linux/wait.h> |
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#include <linux/writeback.h> |
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#include <linux/slab.h> |
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#include <linux/posix_acl.h> |
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#include <linux/refcount.h> |
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#include <linux/security.h> |
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#include <linux/ceph/libceph.h> |
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#ifdef CONFIG_CEPH_FSCACHE |
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#define FSCACHE_USE_NEW_IO_API |
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#include <linux/fscache.h> |
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#endif |
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/* f_type in struct statfs */ |
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#define CEPH_SUPER_MAGIC 0x00c36400 |
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/* large granularity for statfs utilization stats to facilitate |
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* large volume sizes on 32-bit machines. */ |
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#define CEPH_BLOCK_SHIFT 22 /* 4 MB */ |
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#define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) |
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#define CEPH_MOUNT_OPT_CLEANRECOVER (1<<1) /* auto reonnect (clean mode) after blocklisted */ |
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#define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ |
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#define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ |
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#define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ |
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#define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ |
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#define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ |
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#define CEPH_MOUNT_OPT_FSCACHE (1<<10) /* use fscache */ |
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#define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11) /* no pool permission check */ |
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#define CEPH_MOUNT_OPT_MOUNTWAIT (1<<12) /* mount waits if no mds is up */ |
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#define CEPH_MOUNT_OPT_NOQUOTADF (1<<13) /* no root dir quota in statfs */ |
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#define CEPH_MOUNT_OPT_NOCOPYFROM (1<<14) /* don't use RADOS 'copy-from' op */ |
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#define CEPH_MOUNT_OPT_ASYNC_DIROPS (1<<15) /* allow async directory ops */ |
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#define CEPH_MOUNT_OPT_DEFAULT \ |
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(CEPH_MOUNT_OPT_DCACHE | \ |
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CEPH_MOUNT_OPT_NOCOPYFROM) |
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#define ceph_set_mount_opt(fsc, opt) \ |
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(fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt |
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#define ceph_clear_mount_opt(fsc, opt) \ |
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(fsc)->mount_options->flags &= ~CEPH_MOUNT_OPT_##opt |
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#define ceph_test_mount_opt(fsc, opt) \ |
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(!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) |
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/* max size of osd read request, limited by libceph */ |
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#define CEPH_MAX_READ_SIZE CEPH_MSG_MAX_DATA_LEN |
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/* osd has a configurable limitaion of max write size. |
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* CEPH_MSG_MAX_DATA_LEN should be small enough. */ |
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#define CEPH_MAX_WRITE_SIZE CEPH_MSG_MAX_DATA_LEN |
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#define CEPH_RASIZE_DEFAULT (8192*1024) /* max readahead */ |
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#define CEPH_MAX_READDIR_DEFAULT 1024 |
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#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) |
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#define CEPH_SNAPDIRNAME_DEFAULT ".snap" |
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/* |
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* Delay telling the MDS we no longer want caps, in case we reopen |
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* the file. Delay a minimum amount of time, even if we send a cap |
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* message for some other reason. Otherwise, take the oppotunity to |
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* update the mds to avoid sending another message later. |
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*/ |
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#define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */ |
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#define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */ |
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struct ceph_mount_options { |
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unsigned int flags; |
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unsigned int wsize; /* max write size */ |
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unsigned int rsize; /* max read size */ |
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unsigned int rasize; /* max readahead */ |
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unsigned int congestion_kb; /* max writeback in flight */ |
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unsigned int caps_wanted_delay_min, caps_wanted_delay_max; |
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int caps_max; |
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unsigned int max_readdir; /* max readdir result (entries) */ |
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unsigned int max_readdir_bytes; /* max readdir result (bytes) */ |
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/* |
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* everything above this point can be memcmp'd; everything below |
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* is handled in compare_mount_options() |
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*/ |
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char *snapdir_name; /* default ".snap" */ |
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char *mds_namespace; /* default NULL */ |
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char *server_path; /* default NULL (means "/") */ |
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char *fscache_uniq; /* default NULL */ |
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}; |
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struct ceph_fs_client { |
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struct super_block *sb; |
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struct list_head metric_wakeup; |
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struct ceph_mount_options *mount_options; |
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struct ceph_client *client; |
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int mount_state; |
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bool blocklisted; |
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bool have_copy_from2; |
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u32 filp_gen; |
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loff_t max_file_size; |
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struct ceph_mds_client *mdsc; |
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atomic_long_t writeback_count; |
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struct workqueue_struct *inode_wq; |
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struct workqueue_struct *cap_wq; |
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#ifdef CONFIG_DEBUG_FS |
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struct dentry *debugfs_dentry_lru, *debugfs_caps; |
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struct dentry *debugfs_congestion_kb; |
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struct dentry *debugfs_bdi; |
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struct dentry *debugfs_mdsc, *debugfs_mdsmap; |
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struct dentry *debugfs_metric; |
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struct dentry *debugfs_status; |
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struct dentry *debugfs_mds_sessions; |
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#endif |
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#ifdef CONFIG_CEPH_FSCACHE |
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struct fscache_cookie *fscache; |
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#endif |
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}; |
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/* |
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* File i/o capability. This tracks shared state with the metadata |
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* server that allows us to cache or writeback attributes or to read |
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* and write data. For any given inode, we should have one or more |
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* capabilities, one issued by each metadata server, and our |
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* cumulative access is the OR of all issued capabilities. |
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* |
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* Each cap is referenced by the inode's i_caps rbtree and by per-mds |
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* session capability lists. |
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*/ |
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struct ceph_cap { |
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struct ceph_inode_info *ci; |
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struct rb_node ci_node; /* per-ci cap tree */ |
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struct ceph_mds_session *session; |
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struct list_head session_caps; /* per-session caplist */ |
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u64 cap_id; /* unique cap id (mds provided) */ |
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union { |
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/* in-use caps */ |
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struct { |
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int issued; /* latest, from the mds */ |
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int implemented; /* implemented superset of |
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issued (for revocation) */ |
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int mds; /* mds index for this cap */ |
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int mds_wanted; /* caps wanted from this mds */ |
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}; |
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/* caps to release */ |
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struct { |
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u64 cap_ino; |
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int queue_release; |
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}; |
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}; |
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u32 seq, issue_seq, mseq; |
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u32 cap_gen; /* active/stale cycle */ |
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unsigned long last_used; |
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struct list_head caps_item; |
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}; |
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#define CHECK_CAPS_AUTHONLY 1 /* only check auth cap */ |
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#define CHECK_CAPS_FLUSH 2 /* flush any dirty caps */ |
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#define CHECK_CAPS_NOINVAL 4 /* don't invalidate pagecache */ |
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struct ceph_cap_flush { |
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u64 tid; |
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int caps; |
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bool wake; /* wake up flush waiters when finish ? */ |
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bool is_capsnap; /* true means capsnap */ |
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struct list_head g_list; // global |
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struct list_head i_list; // per inode |
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}; |
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/* |
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* Snapped cap state that is pending flush to mds. When a snapshot occurs, |
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* we first complete any in-process sync writes and writeback any dirty |
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* data before flushing the snapped state (tracked here) back to the MDS. |
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*/ |
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struct ceph_cap_snap { |
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refcount_t nref; |
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struct list_head ci_item; |
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struct ceph_cap_flush cap_flush; |
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u64 follows; |
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int issued, dirty; |
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struct ceph_snap_context *context; |
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umode_t mode; |
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kuid_t uid; |
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kgid_t gid; |
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struct ceph_buffer *xattr_blob; |
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u64 xattr_version; |
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u64 size; |
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u64 change_attr; |
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struct timespec64 mtime, atime, ctime, btime; |
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u64 time_warp_seq; |
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u64 truncate_size; |
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u32 truncate_seq; |
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int writing; /* a sync write is still in progress */ |
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int dirty_pages; /* dirty pages awaiting writeback */ |
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bool inline_data; |
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bool need_flush; |
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}; |
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static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) |
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{ |
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if (refcount_dec_and_test(&capsnap->nref)) { |
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if (capsnap->xattr_blob) |
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ceph_buffer_put(capsnap->xattr_blob); |
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kfree(capsnap); |
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} |
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} |
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/* |
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* The frag tree describes how a directory is fragmented, potentially across |
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* multiple metadata servers. It is also used to indicate points where |
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* metadata authority is delegated, and whether/where metadata is replicated. |
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* |
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* A _leaf_ frag will be present in the i_fragtree IFF there is |
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* delegation info. That is, if mds >= 0 || ndist > 0. |
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*/ |
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#define CEPH_MAX_DIRFRAG_REP 4 |
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struct ceph_inode_frag { |
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struct rb_node node; |
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/* fragtree state */ |
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u32 frag; |
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int split_by; /* i.e. 2^(split_by) children */ |
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/* delegation and replication info */ |
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int mds; /* -1 if same authority as parent */ |
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int ndist; /* >0 if replicated */ |
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int dist[CEPH_MAX_DIRFRAG_REP]; |
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}; |
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/* |
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* We cache inode xattrs as an encoded blob until they are first used, |
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* at which point we parse them into an rbtree. |
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*/ |
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struct ceph_inode_xattr { |
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struct rb_node node; |
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const char *name; |
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int name_len; |
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const char *val; |
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int val_len; |
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int dirty; |
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int should_free_name; |
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int should_free_val; |
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}; |
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/* |
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* Ceph dentry state |
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*/ |
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struct ceph_dentry_info { |
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struct dentry *dentry; |
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struct ceph_mds_session *lease_session; |
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struct list_head lease_list; |
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unsigned flags; |
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int lease_shared_gen; |
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u32 lease_gen; |
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u32 lease_seq; |
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unsigned long lease_renew_after, lease_renew_from; |
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unsigned long time; |
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u64 offset; |
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}; |
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#define CEPH_DENTRY_REFERENCED 1 |
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#define CEPH_DENTRY_LEASE_LIST 2 |
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#define CEPH_DENTRY_SHRINK_LIST 4 |
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#define CEPH_DENTRY_PRIMARY_LINK 8 |
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struct ceph_inode_xattrs_info { |
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/* |
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* (still encoded) xattr blob. we avoid the overhead of parsing |
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* this until someone actually calls getxattr, etc. |
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* |
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* blob->vec.iov_len == 4 implies there are no xattrs; blob == |
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* NULL means we don't know. |
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*/ |
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struct ceph_buffer *blob, *prealloc_blob; |
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struct rb_root index; |
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bool dirty; |
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int count; |
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int names_size; |
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int vals_size; |
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u64 version, index_version; |
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}; |
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/* |
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* Ceph inode. |
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*/ |
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struct ceph_inode_info { |
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struct ceph_vino i_vino; /* ceph ino + snap */ |
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spinlock_t i_ceph_lock; |
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u64 i_version; |
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u64 i_inline_version; |
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u32 i_time_warp_seq; |
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unsigned long i_ceph_flags; |
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atomic64_t i_release_count; |
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atomic64_t i_ordered_count; |
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atomic64_t i_complete_seq[2]; |
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struct ceph_dir_layout i_dir_layout; |
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struct ceph_file_layout i_layout; |
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struct ceph_file_layout i_cached_layout; // for async creates |
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char *i_symlink; |
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/* for dirs */ |
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struct timespec64 i_rctime; |
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u64 i_rbytes, i_rfiles, i_rsubdirs, i_rsnaps; |
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u64 i_files, i_subdirs; |
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/* quotas */ |
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u64 i_max_bytes, i_max_files; |
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s32 i_dir_pin; |
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struct rb_root i_fragtree; |
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int i_fragtree_nsplits; |
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struct mutex i_fragtree_mutex; |
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struct ceph_inode_xattrs_info i_xattrs; |
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/* capabilities. protected _both_ by i_ceph_lock and cap->session's |
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* s_mutex. */ |
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struct rb_root i_caps; /* cap list */ |
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struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ |
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unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ |
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/* |
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* Link to the auth cap's session's s_cap_dirty list. s_cap_dirty |
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* is protected by the mdsc->cap_dirty_lock, but each individual item |
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* is also protected by the inode's i_ceph_lock. Walking s_cap_dirty |
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* requires the mdsc->cap_dirty_lock. List presence for an item can |
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* be tested under the i_ceph_lock. Changing anything requires both. |
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*/ |
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struct list_head i_dirty_item; |
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/* |
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* Link to session's s_cap_flushing list. Protected in a similar |
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* fashion to i_dirty_item, but also by the s_mutex for changes. The |
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* s_cap_flushing list can be walked while holding either the s_mutex |
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* or msdc->cap_dirty_lock. List presence can also be checked while |
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* holding the i_ceph_lock for this inode. |
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*/ |
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struct list_head i_flushing_item; |
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|
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/* we need to track cap writeback on a per-cap-bit basis, to allow |
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* overlapping, pipelined cap flushes to the mds. we can probably |
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* reduce the tid to 8 bits if we're concerned about inode size. */ |
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struct ceph_cap_flush *i_prealloc_cap_flush; |
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struct list_head i_cap_flush_list; |
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wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ |
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unsigned long i_hold_caps_max; /* jiffies */ |
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struct list_head i_cap_delay_list; /* for delayed cap release to mds */ |
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struct ceph_cap_reservation i_cap_migration_resv; |
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struct list_head i_cap_snaps; /* snapped state pending flush to mds */ |
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struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or |
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dirty|flushing caps */ |
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unsigned i_snap_caps; /* cap bits for snapped files */ |
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unsigned long i_last_rd; |
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unsigned long i_last_wr; |
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int i_nr_by_mode[CEPH_FILE_MODE_BITS]; /* open file counts */ |
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struct mutex i_truncate_mutex; |
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u32 i_truncate_seq; /* last truncate to smaller size */ |
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u64 i_truncate_size; /* and the size we last truncated down to */ |
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int i_truncate_pending; /* still need to call vmtruncate */ |
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u64 i_max_size; /* max file size authorized by mds */ |
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u64 i_reported_size; /* (max_)size reported to or requested of mds */ |
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u64 i_wanted_max_size; /* offset we'd like to write too */ |
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u64 i_requested_max_size; /* max_size we've requested */ |
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/* held references to caps */ |
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int i_pin_ref; |
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int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref, i_fx_ref; |
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int i_wrbuffer_ref, i_wrbuffer_ref_head; |
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atomic_t i_filelock_ref; |
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atomic_t i_shared_gen; /* increment each time we get FILE_SHARED */ |
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u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ |
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u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ |
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struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ |
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struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ |
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spinlock_t i_unsafe_lock; |
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union { |
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struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ |
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struct ceph_snapid_map *i_snapid_map; /* snapid -> dev_t */ |
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}; |
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struct list_head i_snap_realm_item; |
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struct list_head i_snap_flush_item; |
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struct timespec64 i_btime; |
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struct timespec64 i_snap_btime; |
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struct work_struct i_work; |
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unsigned long i_work_mask; |
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#ifdef CONFIG_CEPH_FSCACHE |
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struct fscache_cookie *fscache; |
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#endif |
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errseq_t i_meta_err; |
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struct inode vfs_inode; /* at end */ |
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}; |
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static inline struct ceph_inode_info * |
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ceph_inode(const struct inode *inode) |
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{ |
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return container_of(inode, struct ceph_inode_info, vfs_inode); |
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} |
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static inline struct ceph_fs_client * |
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ceph_inode_to_client(const struct inode *inode) |
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{ |
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return (struct ceph_fs_client *)inode->i_sb->s_fs_info; |
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} |
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static inline struct ceph_fs_client * |
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ceph_sb_to_client(const struct super_block *sb) |
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{ |
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return (struct ceph_fs_client *)sb->s_fs_info; |
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} |
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static inline struct ceph_mds_client * |
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ceph_sb_to_mdsc(const struct super_block *sb) |
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{ |
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return (struct ceph_mds_client *)ceph_sb_to_client(sb)->mdsc; |
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} |
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static inline struct ceph_vino |
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ceph_vino(const struct inode *inode) |
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{ |
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return ceph_inode(inode)->i_vino; |
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} |
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static inline u32 ceph_ino_to_ino32(u64 vino) |
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{ |
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u32 ino = vino & 0xffffffff; |
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ino ^= vino >> 32; |
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if (!ino) |
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ino = 2; |
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return ino; |
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} |
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|
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/* |
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* Inode numbers in cephfs are 64 bits, but inode->i_ino is 32-bits on |
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* some arches. We generally do not use this value inside the ceph driver, but |
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* we do want to set it to something, so that generic vfs code has an |
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* appropriate value for tracepoints and the like. |
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*/ |
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static inline ino_t ceph_vino_to_ino_t(struct ceph_vino vino) |
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{ |
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if (sizeof(ino_t) == sizeof(u32)) |
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return ceph_ino_to_ino32(vino.ino); |
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return (ino_t)vino.ino; |
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} |
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|
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/* for printf-style formatting */ |
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#define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap |
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|
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static inline u64 ceph_ino(struct inode *inode) |
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{ |
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return ceph_inode(inode)->i_vino.ino; |
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} |
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|
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static inline u64 ceph_snap(struct inode *inode) |
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{ |
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return ceph_inode(inode)->i_vino.snap; |
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} |
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|
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/** |
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* ceph_present_ino - format an inode number for presentation to userland |
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* @sb: superblock where the inode lives |
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* @ino: inode number to (possibly) convert |
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* |
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* If the user mounted with the ino32 option, then the 64-bit value needs |
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* to be converted to something that can fit inside 32 bits. Note that |
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* internal kernel code never uses this value, so this is entirely for |
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* userland consumption. |
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*/ |
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static inline u64 ceph_present_ino(struct super_block *sb, u64 ino) |
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{ |
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if (unlikely(ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))) |
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return ceph_ino_to_ino32(ino); |
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return ino; |
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} |
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|
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static inline u64 ceph_present_inode(struct inode *inode) |
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{ |
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return ceph_present_ino(inode->i_sb, ceph_ino(inode)); |
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} |
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|
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static inline int ceph_ino_compare(struct inode *inode, void *data) |
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{ |
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struct ceph_vino *pvino = (struct ceph_vino *)data; |
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struct ceph_inode_info *ci = ceph_inode(inode); |
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return ci->i_vino.ino == pvino->ino && |
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ci->i_vino.snap == pvino->snap; |
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} |
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|
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/* |
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* The MDS reserves a set of inodes for its own usage. These should never |
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* 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_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) { |
|
WARN_RATELIMIT(1, "Attempt to access reserved inode number 0x%llx", vino.ino); |
|
return true; |
|
} |
|
return false; |
|
} |
|
|
|
static inline struct inode *ceph_find_inode(struct super_block *sb, |
|
struct ceph_vino 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); |
|
} |
|
|
|
|
|
/* |
|
* Ceph inode. |
|
*/ |
|
#define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ |
|
#define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ |
|
#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 (1 << 11) /* inode in direct I/O mode */ |
|
#define CEPH_ASYNC_CREATE_BIT (12) /* async create in flight for this */ |
|
#define CEPH_I_ASYNC_CREATE (1 << CEPH_ASYNC_CREATE_BIT) |
|
|
|
/* |
|
* 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 |
|
* 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) |
|
{ |
|
if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE)) { |
|
spin_lock(&ci->i_ceph_lock); |
|
ci->i_ceph_flags |= CEPH_I_ERROR_WRITE; |
|
spin_unlock(&ci->i_ceph_lock); |
|
} |
|
} |
|
|
|
static inline void ceph_clear_error_write(struct ceph_inode_info *ci) |
|
{ |
|
if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ERROR_WRITE) { |
|
spin_lock(&ci->i_ceph_lock); |
|
ci->i_ceph_flags &= ~CEPH_I_ERROR_WRITE; |
|
spin_unlock(&ci->i_ceph_lock); |
|
} |
|
} |
|
|
|
static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, |
|
long long release_count, |
|
long long ordered_count) |
|
{ |
|
/* |
|
* 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); |
|
} |
|
|
|
static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) |
|
{ |
|
atomic64_inc(&ci->i_release_count); |
|
} |
|
|
|
static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) |
|
{ |
|
atomic64_inc(&ci->i_ordered_count); |
|
} |
|
|
|
static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) |
|
{ |
|
return atomic64_read(&ci->i_complete_seq[0]) == |
|
atomic64_read(&ci->i_release_count); |
|
} |
|
|
|
static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) |
|
{ |
|
return atomic64_read(&ci->i_complete_seq[0]) == |
|
atomic64_read(&ci->i_release_count) && |
|
atomic64_read(&ci->i_complete_seq[1]) == |
|
atomic64_read(&ci->i_ordered_count); |
|
} |
|
|
|
static inline void ceph_dir_clear_complete(struct inode *inode) |
|
{ |
|
__ceph_dir_clear_complete(ceph_inode(inode)); |
|
} |
|
|
|
static inline void ceph_dir_clear_ordered(struct inode *inode) |
|
{ |
|
__ceph_dir_clear_ordered(ceph_inode(inode)); |
|
} |
|
|
|
static inline bool ceph_dir_is_complete_ordered(struct inode *inode) |
|
{ |
|
bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode)); |
|
smp_rmb(); |
|
return ret; |
|
} |
|
|
|
/* 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) |
|
{ |
|
return (struct ceph_dentry_info *)dentry->d_fsdata; |
|
} |
|
|
|
/* |
|
* caps helpers |
|
*/ |
|
static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) |
|
{ |
|
return !RB_EMPTY_ROOT(&ci->i_caps); |
|
} |
|
|
|
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) |
|
{ |
|
int issued; |
|
spin_lock(&ci->i_ceph_lock); |
|
issued = __ceph_caps_issued(ci, NULL); |
|
spin_unlock(&ci->i_ceph_lock); |
|
return issued; |
|
} |
|
|
|
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_metric(ci, mask, touch); |
|
spin_unlock(&ci->i_ceph_lock); |
|
return r; |
|
} |
|
|
|
static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) |
|
{ |
|
return ci->i_dirty_caps | ci->i_flushing_caps; |
|
} |
|
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) |
|
{ |
|
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_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); |
|
|
|
|
|
|
|
/* |
|
* we keep buffered readdir results attached to file->private_data |
|
*/ |
|
#define CEPH_F_SYNC 1 |
|
#define CEPH_F_ATEND 2 |
|
|
|
struct ceph_file_info { |
|
short fmode; /* initialized on open */ |
|
short flags; /* CEPH_F_* */ |
|
|
|
spinlock_t rw_contexts_lock; |
|
struct list_head rw_contexts; |
|
|
|
errseq_t meta_err; |
|
u32 filp_gen; |
|
atomic_t num_locks; |
|
}; |
|
|
|
struct ceph_dir_file_info { |
|
struct ceph_file_info file_info; |
|
|
|
/* readdir: position within the dir */ |
|
u32 frag; |
|
struct ceph_mds_request *last_readdir; |
|
|
|
/* readdir: position within a frag */ |
|
unsigned next_offset; /* offset of next chunk (last_name's + 1) */ |
|
char *last_name; /* last entry in previous chunk */ |
|
long long dir_release_count; |
|
long long dir_ordered_count; |
|
int readdir_cache_idx; |
|
|
|
/* used for -o dirstat read() on directory thing */ |
|
char *dir_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 dentry **dentries; |
|
int index; |
|
}; |
|
|
|
/* |
|
* 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 { |
|
u64 ino; |
|
struct inode *inode; |
|
atomic_t nref; |
|
struct rb_node node; |
|
|
|
u64 created, seq; |
|
u64 parent_ino; |
|
u64 parent_since; /* snapid when our current parent became so */ |
|
|
|
u64 *prior_parent_snaps; /* snaps inherited from any parents we */ |
|
u32 num_prior_parent_snaps; /* had prior to parent_since */ |
|
u64 *snaps; /* snaps specific to this realm */ |
|
u32 num_snaps; |
|
|
|
struct ceph_snap_realm *parent; |
|
struct list_head children; /* list of child realms */ |
|
struct list_head child_item; |
|
|
|
struct list_head empty_item; /* if i have ref==0 */ |
|
|
|
struct list_head dirty_item; /* if realm needs new context */ |
|
|
|
/* the current set of snaps for this realm */ |
|
struct ceph_snap_context *cached_context; |
|
|
|
struct list_head inodes_with_caps; |
|
spinlock_t inodes_with_caps_lock; |
|
}; |
|
|
|
static inline int default_congestion_kb(void) |
|
{ |
|
int congestion_kb; |
|
|
|
/* |
|
* Copied from NFS |
|
* |
|
* congestion size, scale with available memory. |
|
* |
|
* 64MB: 8192k |
|
* 128MB: 11585k |
|
* 256MB: 16384k |
|
* 512MB: 23170k |
|
* 1GB: 32768k |
|
* 2GB: 46340k |
|
* 4GB: 65536k |
|
* 8GB: 92681k |
|
* 16GB: 131072k |
|
* |
|
* This allows larger machines to have larger/more transfers. |
|
* Limit the default to 256M |
|
*/ |
|
congestion_kb = (16*int_sqrt(totalram_pages())) << (PAGE_SHIFT-10); |
|
if (congestion_kb > 256*1024) |
|
congestion_kb = 256*1024; |
|
|
|
return congestion_kb; |
|
} |
|
|
|
|
|
/* 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_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); |
|
|
|
|
|
/* |
|
* 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) |
|
{ |
|
return !list_empty(&ci->i_cap_snaps) && |
|
list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap, |
|
ci_item)->writing; |
|
} |
|
|
|
/* inode.c */ |
|
struct ceph_mds_reply_info_in; |
|
struct ceph_mds_reply_dirfrag; |
|
|
|
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); |
|
|
|
extern struct inode *ceph_get_inode(struct super_block *sb, |
|
struct ceph_vino vino); |
|
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) |
|
{ |
|
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_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 user_namespace *mnt_userns, |
|
struct inode *inode, int mask); |
|
extern int __ceph_setattr(struct inode *inode, struct iattr *attr); |
|
extern int ceph_setattr(struct user_namespace *mnt_userns, |
|
struct dentry *dentry, struct iattr *attr); |
|
extern int ceph_getattr(struct user_namespace *mnt_userns, |
|
const struct path *path, struct kstat *stat, |
|
u32 request_mask, unsigned int flags); |
|
|
|
/* xattr.c */ |
|
int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); |
|
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 *ceph_xattr_handlers[]; |
|
|
|
struct ceph_acl_sec_ctx { |
|
#ifdef CONFIG_CEPH_FS_POSIX_ACL |
|
void *default_acl; |
|
void *acl; |
|
#endif |
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#ifdef CONFIG_CEPH_FS_SECURITY_LABEL |
|
void *sec_ctx; |
|
u32 sec_ctxlen; |
|
#endif |
|
struct ceph_pagelist *pagelist; |
|
}; |
|
|
|
#ifdef CONFIG_SECURITY |
|
extern bool ceph_security_xattr_deadlock(struct inode *in); |
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extern bool ceph_security_xattr_wanted(struct inode *in); |
|
#else |
|
static inline bool ceph_security_xattr_deadlock(struct inode *in) |
|
{ |
|
return false; |
|
} |
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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); |
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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, bool); |
|
int ceph_set_acl(struct user_namespace *mnt_userns, |
|
struct inode *inode, 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) |
|
{ |
|
forget_all_cached_acls(inode); |
|
} |
|
|
|
#else |
|
|
|
#define ceph_get_acl NULL |
|
#define ceph_set_acl NULL |
|
|
|
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_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 *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_cap_refs_no_check_caps(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 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 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 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 inode *inode, int need); |
|
extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); |
|
|
|
/* 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 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 */ |
|
static inline bool __ceph_has_any_quota(struct ceph_inode_info *ci) |
|
{ |
|
return ci->i_max_files || ci->i_max_bytes; |
|
} |
|
|
|
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_any_quota(ci); |
|
ci->i_max_bytes = max_bytes; |
|
ci->i_max_files = max_files; |
|
has_quota = __ceph_has_any_quota(ci); |
|
|
|
if (had_quota != has_quota) |
|
ceph_adjust_quota_realms_count(&ci->vfs_inode, has_quota); |
|
} |
|
|
|
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); |
|
|
|
#endif /* _FS_CEPH_SUPER_H */
|
|
|