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authorLi Zefan <lizf@cn.fujitsu.com>2010-11-08 15:22:19 +0800
committerLi Zefan <lizf@cn.fujitsu.com>2010-12-22 23:15:50 +0800
commit3a39c18d63fec35f49df577d4b2a4e29c2212f22 (patch)
tree78b8c032e18e2231c18e89ac3f8f5746abdb119c /fs/btrfs/compression.h
parent1a419d85a76853d7d04e9b6280a80e96770bf3e3 (diff)
downloadop-kernel-dev-3a39c18d63fec35f49df577d4b2a4e29c2212f22.zip
op-kernel-dev-3a39c18d63fec35f49df577d4b2a4e29c2212f22.tar.gz
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.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h
index f7ce217..5100017 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,
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