diff options
Diffstat (limited to 'fs/btrfs/extent-io-tree.h')
| -rw-r--r-- | fs/btrfs/extent-io-tree.h | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/fs/btrfs/extent-io-tree.h b/fs/btrfs/extent-io-tree.h index 9d3a52d8f59a..6ffef1cd37c1 100644 --- a/fs/btrfs/extent-io-tree.h +++ b/fs/btrfs/extent-io-tree.h @@ -19,6 +19,7 @@ enum { ENUM_BIT(EXTENT_DIRTY), ENUM_BIT(EXTENT_UPTODATE), ENUM_BIT(EXTENT_LOCKED), + ENUM_BIT(EXTENT_DIO_LOCKED), ENUM_BIT(EXTENT_NEW), ENUM_BIT(EXTENT_DELALLOC), ENUM_BIT(EXTENT_DEFRAG), @@ -67,6 +68,8 @@ enum { EXTENT_ADD_INODE_BYTES | \ EXTENT_CLEAR_ALL_BITS) +#define EXTENT_LOCK_BITS (EXTENT_LOCKED | EXTENT_DIO_LOCKED) + /* * Redefined bits above which are used only in the device allocation tree, * shouldn't be using EXTENT_LOCKED / EXTENT_BOUNDARY / EXTENT_CLEAR_META_RESV @@ -134,12 +137,22 @@ const struct btrfs_fs_info *extent_io_tree_to_fs_info(const struct extent_io_tre void extent_io_tree_init(struct btrfs_fs_info *fs_info, 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, u32 bits, + struct extent_state **cached); +bool __try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end, u32 bits, + struct extent_state **cached); -int lock_extent(struct extent_io_tree *tree, u64 start, u64 end, - struct extent_state **cached); +static inline int lock_extent(struct extent_io_tree *tree, u64 start, u64 end, + struct extent_state **cached) +{ + return __lock_extent(tree, start, end, EXTENT_LOCKED, cached); +} -int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end, - struct extent_state **cached); +static inline bool try_lock_extent(struct extent_io_tree *tree, u64 start, + u64 end, struct extent_state **cached) +{ + return __try_lock_extent(tree, start, end, EXTENT_LOCKED, cached); +} int __init extent_state_init_cachep(void); void __cold extent_state_free_cachep(void); @@ -212,5 +225,22 @@ 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); +static inline int lock_dio_extent(struct extent_io_tree *tree, u64 start, + u64 end, struct extent_state **cached) +{ + return __lock_extent(tree, start, end, EXTENT_DIO_LOCKED, cached); +} + +static inline bool try_lock_dio_extent(struct extent_io_tree *tree, u64 start, + u64 end, struct extent_state **cached) +{ + return __try_lock_extent(tree, start, end, EXTENT_DIO_LOCKED, cached); +} + +static inline int unlock_dio_extent(struct extent_io_tree *tree, u64 start, + u64 end, struct extent_state **cached) +{ + return __clear_extent_bit(tree, start, end, EXTENT_DIO_LOCKED, cached, NULL); +} #endif /* BTRFS_EXTENT_IO_TREE_H */ |