diff options
Diffstat (limited to 'fs/btrfs/volumes.h')
| -rw-r--r-- | fs/btrfs/volumes.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 93854609a4d5..66e6fc481ecd 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -92,6 +92,9 @@ enum btrfs_raid_types { #define BTRFS_DEV_STATE_FLUSH_SENT (4) #define BTRFS_DEV_STATE_NO_READA (5) +/* Special value encoding failure to write primary super block. */ +#define BTRFS_SUPER_PRIMARY_WRITE_ERROR (INT_MAX / 2) + struct btrfs_fs_devices; struct btrfs_device { @@ -142,6 +145,12 @@ struct btrfs_device { /* type and info about this device */ u64 type; + /* + * Counter of super block write errors, values larger than + * BTRFS_SUPER_PRIMARY_WRITE_ERROR encode primary super block write failure. + */ + atomic_t sb_write_errors; + /* minimal io size for this device */ u32 sector_size; @@ -743,7 +752,6 @@ struct btrfs_chunk_map *btrfs_alloc_chunk_map(int num_stripes, gfp_t gfp); int btrfs_add_chunk_map(struct btrfs_fs_info *fs_info, struct btrfs_chunk_map *map); #endif -struct btrfs_chunk_map *btrfs_clone_chunk_map(struct btrfs_chunk_map *map, gfp_t gfp); struct btrfs_chunk_map *btrfs_find_chunk_map(struct btrfs_fs_info *fs_info, u64 logical, u64 length); struct btrfs_chunk_map *btrfs_find_chunk_map_nolock(struct btrfs_fs_info *fs_info, |