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| author |   Liu Bo <bo.li.liu@oracle.com> | 2017-05-15 17:43:31 -0700 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2017-06-19 18:25:58 +0200 |
| commit | 2f8e9140426dff6091b7a40d441befc791882658 (patch) | |
| tree | b7f6b66a9fc9f20b1d6eb3d1aa855c3103b23a75 /fs/btrfs/extent_io.h | |
| parent | Btrfs: use bio_clone_fast to clone our bio (diff) | |
| download | linux-dev-2f8e9140426dff6091b7a40d441befc791882658.tar.xz linux-dev-2f8e9140426dff6091b7a40d441befc791882658.zip | |
Btrfs: new helper btrfs_bio_clone_partial
This adds a new helper btrfs_bio_clone_partial, it'll allocate a cloned
bio that only owns a part of the original bio's data.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/extent_io.h')
| -rw-r--r-- | fs/btrfs/extent_io.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index 1383afdf1eeb..3df018549ce4 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -467,6 +467,8 @@ btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs, gfp_t gfp_flags); struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs); struct bio *btrfs_bio_clone(struct bio *bio, gfp_t gfp_mask); +struct bio *btrfs_bio_clone_partial(struct bio *orig, gfp_t gfp_mask, + int offset, int size); struct btrfs_fs_info; struct btrfs_inode; |