diff options
Diffstat (limited to 'fs/btrfs/extent-io-tree.h')
| -rw-r--r-- | fs/btrfs/extent-io-tree.h | 100 |
1 files changed, 47 insertions, 53 deletions
diff --git a/fs/btrfs/extent-io-tree.h b/fs/btrfs/extent-io-tree.h index a855f40dd61d..e3eeec380844 100644 --- a/fs/btrfs/extent-io-tree.h +++ b/fs/btrfs/extent-io-tree.h @@ -3,43 +3,48 @@ #ifndef BTRFS_EXTENT_IO_TREE_H #define BTRFS_EXTENT_IO_TREE_H +#include "misc.h" + struct extent_changeset; struct io_failure_record; /* Bits for the extent state */ -#define EXTENT_DIRTY (1U << 0) -#define EXTENT_UPTODATE (1U << 1) -#define EXTENT_LOCKED (1U << 2) -#define EXTENT_NEW (1U << 3) -#define EXTENT_DELALLOC (1U << 4) -#define EXTENT_DEFRAG (1U << 5) -#define EXTENT_BOUNDARY (1U << 6) -#define EXTENT_NODATASUM (1U << 7) -#define EXTENT_CLEAR_META_RESV (1U << 8) -#define EXTENT_NEED_WAIT (1U << 9) -#define EXTENT_NORESERVE (1U << 11) -#define EXTENT_QGROUP_RESERVED (1U << 12) -#define EXTENT_CLEAR_DATA_RESV (1U << 13) -/* - * Must be cleared only during ordered extent completion or on error paths if we - * did not manage to submit bios and create the ordered extents for the range. - * Should not be cleared during page release and page invalidation (if there is - * an ordered extent in flight), that is left for the ordered extent completion. - */ -#define EXTENT_DELALLOC_NEW (1U << 14) -/* - * When an ordered extent successfully completes for a region marked as a new - * delalloc range, use this flag when clearing a new delalloc range to indicate - * that the VFS' inode number of bytes should be incremented and the inode's new - * delalloc bytes decremented, in an atomic way to prevent races with stat(2). - */ -#define EXTENT_ADD_INODE_BYTES (1U << 15) - -/* - * Set during truncate when we're clearing an entire range and we just want the - * extent states to go away. - */ -#define EXTENT_CLEAR_ALL_BITS (1U << 16) +enum { + ENUM_BIT(EXTENT_DIRTY), + ENUM_BIT(EXTENT_UPTODATE), + ENUM_BIT(EXTENT_LOCKED), + ENUM_BIT(EXTENT_NEW), + ENUM_BIT(EXTENT_DELALLOC), + ENUM_BIT(EXTENT_DEFRAG), + ENUM_BIT(EXTENT_BOUNDARY), + ENUM_BIT(EXTENT_NODATASUM), + ENUM_BIT(EXTENT_CLEAR_META_RESV), + ENUM_BIT(EXTENT_NEED_WAIT), + ENUM_BIT(EXTENT_NORESERVE), + ENUM_BIT(EXTENT_QGROUP_RESERVED), + ENUM_BIT(EXTENT_CLEAR_DATA_RESV), + /* + * Must be cleared only during ordered extent completion or on error + * paths if we did not manage to submit bios and create the ordered + * extents for the range. Should not be cleared during page release + * and page invalidation (if there is an ordered extent in flight), + * that is left for the ordered extent completion. + */ + ENUM_BIT(EXTENT_DELALLOC_NEW), + /* + * When an ordered extent successfully completes for a region marked as + * a new delalloc range, use this flag when clearing a new delalloc + * range to indicate that the VFS' inode number of bytes should be + * incremented and the inode's new delalloc bytes decremented, in an + * atomic way to prevent races with stat(2). + */ + ENUM_BIT(EXTENT_ADD_INODE_BYTES), + /* + * Set during truncate when we're clearing an entire range and we just + * want the extent states to go away. + */ + ENUM_BIT(EXTENT_CLEAR_ALL_BITS), +}; #define EXTENT_DO_ACCOUNTING (EXTENT_CLEAR_META_RESV | \ EXTENT_CLEAR_DATA_RESV) @@ -75,7 +80,8 @@ enum { struct extent_io_tree { struct rb_root state; struct btrfs_fs_info *fs_info; - void *private_data; + /* Inode associated with this tree, or NULL. */ + struct btrfs_inode *inode; /* Who owns this io tree, should be one of IO_TREE_* */ u8 owner; @@ -99,21 +105,22 @@ struct extent_state { }; void extent_io_tree_init(struct btrfs_fs_info *fs_info, - struct extent_io_tree *tree, unsigned int owner, - void *private_data); + struct extent_io_tree *tree, unsigned int owner); void extent_io_tree_release(struct extent_io_tree *tree); int lock_extent(struct extent_io_tree *tree, u64 start, u64 end, struct extent_state **cached); -int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end); +int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end, + struct extent_state **cached); int __init extent_state_init_cachep(void); void __cold extent_state_free_cachep(void); u64 count_range_bits(struct extent_io_tree *tree, u64 *start, u64 search_end, - u64 max_bytes, u32 bits, int contig); + u64 max_bytes, u32 bits, int contig, + struct extent_state **cached_state); void free_extent_state(struct extent_state *state); int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end, @@ -139,13 +146,6 @@ static inline int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end, GFP_NOFS, NULL); } -static inline int unlock_extent_atomic(struct extent_io_tree *tree, u64 start, - u64 end, struct extent_state **cached) -{ - return __clear_extent_bit(tree, start, end, EXTENT_LOCKED, cached, - GFP_ATOMIC, NULL); -} - static inline int clear_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, u32 bits) { @@ -217,13 +217,6 @@ static inline int set_extent_new(struct extent_io_tree *tree, u64 start, return set_extent_bit(tree, start, end, EXTENT_NEW, NULL, GFP_NOFS); } -static inline int set_extent_uptodate(struct extent_io_tree *tree, u64 start, - u64 end, struct extent_state **cached_state, gfp_t mask) -{ - return set_extent_bit(tree, start, end, EXTENT_UPTODATE, - cached_state, mask); -} - int find_first_extent_bit(struct extent_io_tree *tree, u64 start, u64 *start_ret, u64 *end_ret, u32 bits, struct extent_state **cached_state); @@ -234,6 +227,7 @@ int find_contiguous_extent_bit(struct extent_io_tree *tree, u64 start, bool btrfs_find_delalloc_range(struct extent_io_tree *tree, u64 *start, u64 *end, u64 max_bytes, struct extent_state **cached_state); -void wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, u32 bits); +void wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, u32 bits, + struct extent_state **cached_state); #endif /* BTRFS_EXTENT_IO_TREE_H */ |