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| author | Li Zefan | 2010-11-08 08:22:19 +0100 |
|---|---|---|
| committer | Li Zefan | 2010-12-22 16:15:50 +0100 |
| commit | 3a39c18d63fec35f49df577d4b2a4e29c2212f22 (patch) | |
| tree | 78b8c032e18e2231c18e89ac3f8f5746abdb119c /fs/btrfs/compression.h | |
| parent | btrfs: Allow to specify compress method when defrag (diff) | |
| download | kernel-qcow2-linux-3a39c18d63fec35f49df577d4b2a4e29c2212f22.tar.gz kernel-qcow2-linux-3a39c18d63fec35f49df577d4b2a4e29c2212f22.tar.xz kernel-qcow2-linux-3a39c18d63fec35f49df577d4b2a4e29c2212f22.zip | |
btrfs: Extract duplicate decompress code
Add a common function to copy decompressed data from working buffer
to bio pages.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Diffstat (limited to 'fs/btrfs/compression.h')
| -rw-r--r-- | fs/btrfs/compression.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h index f7ce217113fa..51000174b9d7 100644 --- a/fs/btrfs/compression.h +++ b/fs/btrfs/compression.h @@ -34,6 +34,11 @@ int btrfs_decompress_biovec(int type, struct page **pages_in, u64 disk_start, struct bio_vec *bvec, int vcnt, size_t srclen); int btrfs_decompress(int type, unsigned char *data_in, struct page *dest_page, unsigned long start_byte, size_t srclen, size_t destlen); +int btrfs_decompress_buf2page(char *buf, unsigned long buf_start, + unsigned long total_out, u64 disk_start, + struct bio_vec *bvec, int vcnt, + unsigned long *page_index, + unsigned long *pg_offset); int btrfs_submit_compressed_write(struct inode *inode, u64 start, unsigned long len, u64 disk_start, |