diff options
Diffstat (limited to 'fs/btrfs/extent_io.h')
| -rw-r--r-- | fs/btrfs/extent_io.h | 81 |
1 files changed, 29 insertions, 52 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index 369daa5d4f73..08749e0b9c32 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -18,17 +18,16 @@ #define EXTENT_BOUNDARY (1U << 9) #define EXTENT_NODATASUM (1U << 10) #define EXTENT_CLEAR_META_RESV (1U << 11) -#define EXTENT_FIRST_DELALLOC (1U << 12) -#define EXTENT_NEED_WAIT (1U << 13) -#define EXTENT_DAMAGED (1U << 14) -#define EXTENT_NORESERVE (1U << 15) -#define EXTENT_QGROUP_RESERVED (1U << 16) -#define EXTENT_CLEAR_DATA_RESV (1U << 17) -#define EXTENT_DELALLOC_NEW (1U << 18) +#define EXTENT_NEED_WAIT (1U << 12) +#define EXTENT_DAMAGED (1U << 13) +#define EXTENT_NORESERVE (1U << 14) +#define EXTENT_QGROUP_RESERVED (1U << 15) +#define EXTENT_CLEAR_DATA_RESV (1U << 16) +#define EXTENT_DELALLOC_NEW (1U << 17) #define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK) #define EXTENT_DO_ACCOUNTING (EXTENT_CLEAR_META_RESV | \ EXTENT_CLEAR_DATA_RESV) -#define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING | EXTENT_FIRST_DELALLOC) +#define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING) /* * flags for bio submission. The high bits indicate the compression @@ -37,18 +36,22 @@ #define EXTENT_BIO_COMPRESSED 1 #define EXTENT_BIO_FLAG_SHIFT 16 -/* these are bit numbers for test/set bit */ -#define EXTENT_BUFFER_UPTODATE 0 -#define EXTENT_BUFFER_DIRTY 2 -#define EXTENT_BUFFER_CORRUPT 3 -#define EXTENT_BUFFER_READAHEAD 4 /* this got triggered by readahead */ -#define EXTENT_BUFFER_TREE_REF 5 -#define EXTENT_BUFFER_STALE 6 -#define EXTENT_BUFFER_WRITEBACK 7 -#define EXTENT_BUFFER_READ_ERR 8 /* read IO error */ -#define EXTENT_BUFFER_UNMAPPED 9 -#define EXTENT_BUFFER_IN_TREE 10 -#define EXTENT_BUFFER_WRITE_ERR 11 /* write IO error */ +enum { + EXTENT_BUFFER_UPTODATE, + EXTENT_BUFFER_DIRTY, + EXTENT_BUFFER_CORRUPT, + /* this got triggered by readahead */ + EXTENT_BUFFER_READAHEAD, + EXTENT_BUFFER_TREE_REF, + EXTENT_BUFFER_STALE, + EXTENT_BUFFER_WRITEBACK, + /* read IO error */ + EXTENT_BUFFER_READ_ERR, + EXTENT_BUFFER_UNMAPPED, + EXTENT_BUFFER_IN_TREE, + /* write IO error */ + EXTENT_BUFFER_WRITE_ERR, +}; /* these are flags for __process_pages_contig */ #define PAGE_UNLOCK (1 << 0) @@ -94,38 +97,13 @@ typedef blk_status_t (extent_submit_bio_start_t)(void *private_data, struct extent_io_ops { /* - * The following callbacks must be allways defined, the function + * The following callbacks must be always defined, the function * pointer will be called unconditionally. */ extent_submit_bio_hook_t *submit_bio_hook; int (*readpage_end_io_hook)(struct btrfs_io_bio *io_bio, u64 phy_offset, struct page *page, u64 start, u64 end, int mirror); - int (*readpage_io_failed_hook)(struct page *page, int failed_mirror); - - /* - * Optional hooks, called if the pointer is not NULL - */ - int (*fill_delalloc)(void *private_data, struct page *locked_page, - u64 start, u64 end, int *page_started, - unsigned long *nr_written, - struct writeback_control *wbc); - - int (*writepage_start_hook)(struct page *page, u64 start, u64 end); - void (*writepage_end_io_hook)(struct page *page, u64 start, u64 end, - struct extent_state *state, int uptodate); - void (*set_bit_hook)(void *private_data, struct extent_state *state, - unsigned *bits); - void (*clear_bit_hook)(void *private_data, - struct extent_state *state, - unsigned *bits); - void (*merge_extent_hook)(void *private_data, - struct extent_state *new, - struct extent_state *other); - void (*split_extent_hook)(void *private_data, - struct extent_state *orig, u64 split); - void (*check_extent_io_range)(void *private_data, const char *caller, - u64 start, u64 end); }; struct extent_io_tree { @@ -353,11 +331,11 @@ static inline int set_extent_dirty(struct extent_io_tree *tree, u64 start, } static inline int clear_extent_dirty(struct extent_io_tree *tree, u64 start, - u64 end) + u64 end, struct extent_state **cached) { return clear_extent_bit(tree, start, end, EXTENT_DIRTY | EXTENT_DELALLOC | - EXTENT_DO_ACCOUNTING, 0, 0, NULL); + EXTENT_DO_ACCOUNTING, 0, 0, cached); } int convert_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, @@ -546,10 +524,9 @@ int free_io_failure(struct extent_io_tree *failure_tree, struct extent_io_tree *io_tree, struct io_failure_record *rec); #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS -u64 btrfs_find_lock_delalloc_range(struct inode *inode, - struct extent_io_tree *tree, - struct page *locked_page, u64 *start, - u64 *end, u64 max_bytes); +bool find_lock_delalloc_range(struct inode *inode, struct extent_io_tree *tree, + struct page *locked_page, u64 *start, + u64 *end); #endif struct extent_buffer *alloc_test_extent_buffer(struct btrfs_fs_info *fs_info, u64 start); |