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| author | David Sterba <dsterba@suse.com> | 2016-11-08 18:30:31 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-11-30 13:45:17 +0100 |
| commit | 58e8012cc12b3cdebea118981c4fd7136d52f2c7 (patch) | |
| tree | 5cda8d4a202fc99ee64be2de43c251b4982c993e /fs/btrfs/extent_io.h | |
| parent | b159fa2808b1b53d784807a48ad95fa809be10b0 (diff) | |
| download | lwn-58e8012cc12b3cdebea118981c4fd7136d52f2c7.tar.gz lwn-58e8012cc12b3cdebea118981c4fd7136d52f2c7.zip | |
btrfs: add optimized version of eb to eb copy
Using copy_extent_buffer is suitable for copying betwenn buffers from an
arbitrary offset and deals with page boundaries. This is not necessary
when doing a full extent_buffer-to-extent_buffer copy. We can utilize
the copy_page helper as well.
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 12fe17523df2..ae64c1917d0a 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -410,6 +410,8 @@ void write_extent_buffer_chunk_tree_uuid(struct extent_buffer *eb, const void *src); void write_extent_buffer(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, unsigned long dst_offset, unsigned long src_offset, unsigned long len); |