diff options
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 83 |
1 files changed, 58 insertions, 25 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 9ae776ab3967..f83fd3cbf243 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -342,6 +342,27 @@ struct btrfs_node { struct btrfs_key_ptr ptrs[]; } __attribute__ ((__packed__)); +/* Read ahead values for struct btrfs_path.reada */ +enum { + READA_NONE, + READA_BACK, + READA_FORWARD, + /* + * Similar to READA_FORWARD but unlike it: + * + * 1) It will trigger readahead even for leaves that are not close to + * each other on disk; + * 2) It also triggers readahead for nodes; + * 3) During a search, even when a node or leaf is already in memory, it + * will still trigger readahead for other nodes and leaves that follow + * it. + * + * This is meant to be used only when we know we are iterating over the + * entire tree or a very large part of it. + */ + READA_FORWARD_ALWAYS, +}; + /* * btrfs_paths remember the path taken from the root down to the leaf. * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point @@ -350,7 +371,6 @@ struct btrfs_node { * The slots array records the index of the item or block pointer * used while walking the tree. */ -enum { READA_NONE, READA_BACK, READA_FORWARD }; struct btrfs_path { struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; int slots[BTRFS_MAX_LEVEL]; @@ -482,16 +502,6 @@ struct btrfs_discard_ctl { atomic64_t discard_bytes_saved; }; -/* delayed seq elem */ -struct seq_list { - struct list_head list; - u64 seq; -}; - -#define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } - -#define SEQ_LAST ((u64)-1) - enum btrfs_orphan_cleanup_state { ORPHAN_CLEANUP_STARTED = 1, ORPHAN_CLEANUP_DONE = 2, @@ -572,6 +582,15 @@ enum { /* Indicate that we can't trust the free space tree for caching yet */ BTRFS_FS_FREE_SPACE_TREE_UNTRUSTED, + + /* Indicate whether there are any tree modification log users */ + BTRFS_FS_TREE_MOD_LOG_USERS, + +#if BITS_PER_LONG == 32 + /* Indicate if we have error/warn message printed on 32bit systems */ + BTRFS_FS_32BIT_ERROR, + BTRFS_FS_32BIT_WARN, +#endif }; /* @@ -941,10 +960,16 @@ struct btrfs_fs_info { struct work_struct async_data_reclaim_work; struct work_struct preempt_reclaim_work; + /* Reclaim partially filled block groups in the background */ + struct work_struct reclaim_bgs_work; + struct list_head reclaim_bgs; + int bg_reclaim_threshold; + spinlock_t unused_bgs_lock; struct list_head unused_bgs; struct mutex unused_bg_unpin_mutex; - struct mutex delete_unused_bgs_mutex; + /* Protect block groups that are going to be deleted */ + struct mutex reclaim_bgs_lock; /* Cached block sizes */ u32 nodesize; @@ -2691,7 +2716,6 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans); int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, struct btrfs_ref *generic_ref); -int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr); void btrfs_clear_space_info_full(struct btrfs_fs_info *info); /* @@ -2929,13 +2953,6 @@ static inline void btrfs_clear_sb_rdonly(struct super_block *sb) clear_bit(BTRFS_FS_STATE_RO, &btrfs_sb(sb)->fs_state); } -/* tree mod log functions from ctree.c */ -u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, - struct seq_list *elem); -void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, - struct seq_list *elem); -int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); - /* root-item.c */ int btrfs_add_root_ref(struct btrfs_trans_handle *trans, u64 root_id, u64 ref_id, u64 dirid, u64 sequence, const char *name, @@ -3084,7 +3101,7 @@ u64 btrfs_file_extent_end(const struct btrfs_path *path); blk_status_t btrfs_submit_data_bio(struct inode *inode, struct bio *bio, int mirror_num, unsigned long bio_flags); int btrfs_verify_data_csum(struct btrfs_io_bio *io_bio, u32 bio_offset, - struct page *page, u64 start, u64 end, int mirror); + struct page *page, u64 start, u64 end); struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, u64 start, u64 len); noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, @@ -3179,6 +3196,7 @@ extern const struct iomap_dio_ops btrfs_dio_ops; /* Inode locking type flags, by default the exclusive lock is taken */ #define BTRFS_ILOCK_SHARED (1U << 0) #define BTRFS_ILOCK_TRY (1U << 1) +#define BTRFS_ILOCK_MMAP (1U << 2) int btrfs_inode_lock(struct inode *inode, unsigned int ilock_flags); void btrfs_inode_unlock(struct inode *inode, unsigned int ilock_flags); @@ -3189,6 +3207,9 @@ void btrfs_update_inode_bytes(struct btrfs_inode *inode, /* ioctl.c */ long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); +int btrfs_fileattr_get(struct dentry *dentry, struct fileattr *fa); +int btrfs_fileattr_set(struct user_namespace *mnt_userns, + struct dentry *dentry, struct fileattr *fa); int btrfs_ioctl_get_supported_features(void __user *arg); void btrfs_sync_inode_flags_to_i_flags(struct inode *inode); int __pure btrfs_is_empty_uuid(u8 *uuid); @@ -3217,8 +3238,9 @@ extern const struct file_operations btrfs_file_operations; int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_inode *inode, struct btrfs_drop_extents_args *args); -int btrfs_replace_file_extents(struct inode *inode, struct btrfs_path *path, - const u64 start, const u64 end, +int btrfs_replace_file_extents(struct btrfs_inode *inode, + struct btrfs_path *path, const u64 start, + const u64 end, struct btrfs_replace_extent_info *extent_info, struct btrfs_trans_handle **trans_out); int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, @@ -3405,6 +3427,19 @@ static inline void assertfail(const char *expr, const char* file, int line) { } #define ASSERT(expr) (void)(expr) #endif +#if BITS_PER_LONG == 32 +#define BTRFS_32BIT_MAX_FILE_SIZE (((u64)ULONG_MAX + 1) << PAGE_SHIFT) +/* + * The warning threshold is 5/8th of the MAX_LFS_FILESIZE that limits the logical + * addresses of extents. + * + * For 4K page size it's about 10T, for 64K it's 160T. + */ +#define BTRFS_32BIT_EARLY_WARN_THRESHOLD (BTRFS_32BIT_MAX_FILE_SIZE * 5 / 8) +void btrfs_warn_32bit_limit(struct btrfs_fs_info *fs_info); +void btrfs_err_32bit_limit(struct btrfs_fs_info *fs_info); +#endif + /* * Get the correct offset inside the page of extent buffer. * @@ -3732,8 +3767,6 @@ static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) return signal_pending(current); } -#define in_range(b, first, len) ((b) >= (first) && (b) < (first) + (len)) - /* Sanity test specific functions */ #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS void btrfs_test_destroy_inode(struct inode *inode); 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