diff options
Diffstat (limited to 'fs/btrfs/extent_io.h')
| -rw-r--r-- | fs/btrfs/extent_io.h | 67 |
1 files changed, 35 insertions, 32 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index 25594e09fdcd..602bf3af9fb4 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -66,6 +66,10 @@ struct btrfs_io_bio; struct io_failure_record; struct extent_io_tree; +typedef blk_status_t (submit_bio_hook_t)(struct inode *inode, struct bio *bio, + int mirror_num, + unsigned long bio_flags); + typedef blk_status_t (extent_submit_bio_start_t)(void *private_data, struct bio *bio, u64 bio_offset); @@ -74,8 +78,7 @@ struct extent_io_ops { * The following callbacks must be always defined, the function * pointer will be called unconditionally. */ - blk_status_t (*submit_bio_hook)(struct inode *inode, struct bio *bio, - int mirror_num, unsigned long bio_flags); + 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); @@ -209,7 +212,7 @@ struct extent_buffer *__alloc_dummy_extent_buffer(struct btrfs_fs_info *fs_info, u64 start, unsigned long len); struct extent_buffer *alloc_dummy_extent_buffer(struct btrfs_fs_info *fs_info, u64 start); -struct extent_buffer *btrfs_clone_extent_buffer(struct extent_buffer *src); +struct extent_buffer *btrfs_clone_extent_buffer(const struct extent_buffer *src); struct extent_buffer *find_extent_buffer(struct btrfs_fs_info *fs_info, u64 start); void free_extent_buffer(struct extent_buffer *eb); @@ -227,7 +230,7 @@ static inline int num_extent_pages(const struct extent_buffer *eb) (eb->start >> PAGE_SHIFT); } -static inline int extent_buffer_uptodate(struct extent_buffer *eb) +static inline int extent_buffer_uptodate(const struct extent_buffer *eb) { return test_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags); } @@ -240,37 +243,37 @@ void read_extent_buffer(const struct extent_buffer *eb, void *dst, int read_extent_buffer_to_user(const struct extent_buffer *eb, void __user *dst, unsigned long start, unsigned long len); -void write_extent_buffer_fsid(struct extent_buffer *eb, const void *src); -void write_extent_buffer_chunk_tree_uuid(struct extent_buffer *eb, +void write_extent_buffer_fsid(const struct extent_buffer *eb, const void *src); +void write_extent_buffer_chunk_tree_uuid(const struct extent_buffer *eb, const void *src); -void write_extent_buffer(struct extent_buffer *eb, const void *src, +void write_extent_buffer(const struct extent_buffer *eb, const void *src, unsigned long start, unsigned long len); -void copy_extent_buffer_full(struct extent_buffer *dst, - struct extent_buffer *src); -void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src, +void copy_extent_buffer_full(const struct extent_buffer *dst, + const struct extent_buffer *src); +void copy_extent_buffer(const struct extent_buffer *dst, + const struct extent_buffer *src, unsigned long dst_offset, unsigned long src_offset, unsigned long len); -void memcpy_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset, - unsigned long src_offset, unsigned long len); -void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset, - unsigned long src_offset, unsigned long len); -void memzero_extent_buffer(struct extent_buffer *eb, unsigned long start, +void memcpy_extent_buffer(const struct extent_buffer *dst, + unsigned long dst_offset, unsigned long src_offset, + unsigned long len); +void memmove_extent_buffer(const struct extent_buffer *dst, + unsigned long dst_offset, unsigned long src_offset, + unsigned long len); +void memzero_extent_buffer(const struct extent_buffer *eb, unsigned long start, unsigned long len); -int extent_buffer_test_bit(struct extent_buffer *eb, unsigned long start, +int extent_buffer_test_bit(const struct extent_buffer *eb, unsigned long start, unsigned long pos); -void extent_buffer_bitmap_set(struct extent_buffer *eb, unsigned long start, +void extent_buffer_bitmap_set(const struct extent_buffer *eb, unsigned long start, unsigned long pos, unsigned long len); -void extent_buffer_bitmap_clear(struct extent_buffer *eb, unsigned long start, - unsigned long pos, unsigned long len); -void clear_extent_buffer_dirty(struct extent_buffer *eb); +void extent_buffer_bitmap_clear(const struct extent_buffer *eb, + unsigned long start, unsigned long pos, + unsigned long len); +void clear_extent_buffer_dirty(const struct extent_buffer *eb); bool set_extent_buffer_dirty(struct extent_buffer *eb); void set_extent_buffer_uptodate(struct extent_buffer *eb); void clear_extent_buffer_uptodate(struct extent_buffer *eb); -int extent_buffer_under_io(struct extent_buffer *eb); -int map_private_extent_buffer(const struct extent_buffer *eb, - unsigned long offset, unsigned long min_len, - char **map, unsigned long *map_start, - unsigned long *map_len); +int extent_buffer_under_io(const struct extent_buffer *eb); void extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end); void extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end); void extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end, @@ -289,7 +292,7 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start, u64 length, u64 logical, struct page *page, unsigned int pg_offset, int mirror_num); void end_extent_writepage(struct page *page, int err, u64 start, u64 end); -int btrfs_repair_eb_io_failure(struct extent_buffer *eb, int mirror_num); +int btrfs_repair_eb_io_failure(const struct extent_buffer *eb, int mirror_num); /* * When IO fails, either with EIO or csum verification fails, we @@ -311,12 +314,12 @@ struct io_failure_record { }; -bool btrfs_check_repairable(struct inode *inode, unsigned failed_bio_pages, - struct io_failure_record *failrec, int fail_mirror); -struct bio *btrfs_create_repair_bio(struct inode *inode, struct bio *failed_bio, - struct io_failure_record *failrec, - struct page *page, int pg_offset, int icsum, - bio_end_io_t *endio_func, void *data); +blk_status_t btrfs_submit_read_repair(struct inode *inode, + struct bio *failed_bio, u64 phy_offset, + struct page *page, unsigned int pgoff, + u64 start, u64 end, int failed_mirror, + submit_bio_hook_t *submit_bio_hook); + #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS bool find_lock_delalloc_range(struct inode *inode, struct page *locked_page, u64 *start, |