diff options
| -rw-r--r-- | fs/btrfs/volumes.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 6721002000ee..1e86c48268ed 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -391,6 +391,22 @@ static inline void btrfs_bio_free_csum(struct btrfs_bio *bbio) } } +/* + * Iterate through a btrfs_bio (@bbio) on a per-sector basis. + * + * bvl - struct bio_vec + * bbio - struct btrfs_bio + * iters - struct bvec_iter + * bio_offset - unsigned int + */ +#define btrfs_bio_for_each_sector(fs_info, bvl, bbio, iter, bio_offset) \ + for ((iter) = (bbio)->iter, (bio_offset) = 0; \ + (iter).bi_size && \ + (((bvl) = bio_iter_iovec((&(bbio)->bio), (iter))), 1); \ + (bio_offset) += fs_info->sectorsize, \ + bio_advance_iter_single(&(bbio)->bio, &(iter), \ + (fs_info)->sectorsize)) + struct btrfs_io_stripe { struct btrfs_device *dev; u64 physical; |