diff options
Diffstat (limited to 'fs/btrfs/extent_io.h')
| -rw-r--r-- | fs/btrfs/extent_io.h | 60 |
1 files changed, 41 insertions, 19 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index ccc264e7bde1..6d4b938be986 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -11,8 +11,6 @@ #define EXTENT_NEW (1 << 4) #define EXTENT_DELALLOC (1 << 5) #define EXTENT_DEFRAG (1 << 6) -#define EXTENT_DEFRAG_DONE (1 << 7) -#define EXTENT_BUFFER_FILLED (1 << 8) #define EXTENT_BOUNDARY (1 << 9) #define EXTENT_NODATASUM (1 << 10) #define EXTENT_DO_ACCOUNTING (1 << 11) @@ -34,16 +32,16 @@ /* these are bit numbers for test/set bit */ #define EXTENT_BUFFER_UPTODATE 0 -#define EXTENT_BUFFER_BLOCKING 1 #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_IOERR 8 +#define EXTENT_BUFFER_READ_ERR 8 /* read IO error */ #define EXTENT_BUFFER_DUMMY 9 #define EXTENT_BUFFER_IN_TREE 10 +#define EXTENT_BUFFER_WRITE_ERR 11 /* write IO error */ /* these are flags for extent_clear_unlock_delalloc */ #define PAGE_UNLOCK (1 << 0) @@ -57,7 +55,6 @@ * map has page->private set to one. */ #define EXTENT_PAGE_PRIVATE 1 -#define EXTENT_PAGE_PRIVATE_FIRST_PAGE 3 struct extent_state; struct btrfs_root; @@ -108,7 +105,6 @@ struct extent_state { struct rb_node rb_node; /* ADD NEW ELEMENTS AFTER THIS */ - struct extent_io_tree *tree; wait_queue_head_t wq; atomic_t refs; unsigned long state; @@ -126,8 +122,6 @@ struct extent_state { struct extent_buffer { u64 start; unsigned long len; - unsigned long map_start; - unsigned long map_len; unsigned long bflags; struct btrfs_fs_info *fs_info; spinlock_t refs_lock; @@ -144,7 +138,9 @@ struct extent_buffer { atomic_t blocking_readers; atomic_t spinning_readers; atomic_t spinning_writers; - int lock_nested; + short lock_nested; + /* >= 0 if eb belongs to a log tree, -1 otherwise */ + short log_index; /* protects write locks */ rwlock_t lock; @@ -286,12 +282,6 @@ static inline unsigned long num_extent_pages(u64 start, u64 len) (start >> PAGE_CACHE_SHIFT); } -static inline struct page *extent_buffer_page(struct extent_buffer *eb, - unsigned long i) -{ - return eb->pages[i]; -} - static inline void extent_buffer_get(struct extent_buffer *eb) { atomic_inc(&eb->refs); @@ -341,18 +331,50 @@ struct bio *btrfs_bio_clone(struct bio *bio, gfp_t gfp_mask); struct btrfs_fs_info; -int repair_io_failure(struct btrfs_fs_info *fs_info, u64 start, - u64 length, u64 logical, struct page *page, - int mirror_num); +int repair_io_failure(struct inode *inode, u64 start, u64 length, u64 logical, + struct page *page, unsigned int pg_offset, + int mirror_num); +int clean_io_failure(struct inode *inode, u64 start, struct page *page, + unsigned int pg_offset); int end_extent_writepage(struct page *page, int err, u64 start, u64 end); int repair_eb_io_failure(struct btrfs_root *root, struct extent_buffer *eb, int mirror_num); + +/* + * When IO fails, either with EIO or csum verification fails, we + * try other mirrors that might have a good copy of the data. This + * io_failure_record is used to record state as we go through all the + * mirrors. If another mirror has good data, the page is set up to date + * and things continue. If a good mirror can't be found, the original + * bio end_io callback is called to indicate things have failed. + */ +struct io_failure_record { + struct page *page; + u64 start; + u64 len; + u64 logical; + unsigned long bio_flags; + int this_mirror; + int failed_mirror; + int in_validation; +}; + +void btrfs_free_io_failure_record(struct inode *inode, u64 start, u64 end); +int btrfs_get_io_failure_record(struct inode *inode, u64 start, u64 end, + struct io_failure_record **failrec_ret); +int btrfs_check_repairable(struct inode *inode, struct bio *failed_bio, + 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); +int free_io_failure(struct inode *inode, struct io_failure_record *rec); #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS noinline u64 find_lock_delalloc_range(struct inode *inode, struct extent_io_tree *tree, struct page *locked_page, u64 *start, u64 *end, u64 max_bytes); +#endif struct extent_buffer *alloc_test_extent_buffer(struct btrfs_fs_info *fs_info, u64 start, unsigned long len); #endif -#endif |