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| author | Li Zefan <lizf@cn.fujitsu.com> | 2010-12-17 14:21:50 +0800 |
|---|---|---|
| committer | Li Zefan <lizf@cn.fujitsu.com> | 2010-12-22 23:15:45 +0800 |
| commit | 261507a02ccba9afda919852263b6bc1581ce1ef (patch) | |
| tree | c16bc657ff4e29a87042ceb379487f24dff01035 /fs/btrfs/extent_io.c | |
| parent | 4b72029dc3fd6ba7dc45ccd1cf0aa0ebfa209bd3 (diff) | |
| download | op-kernel-dev-261507a02ccba9afda919852263b6bc1581ce1ef.zip op-kernel-dev-261507a02ccba9afda919852263b6bc1581ce1ef.tar.gz | |
btrfs: Allow to add new compression algorithm
Make the code aware of compression type, instead of always assuming
zlib compression.
Also make the zlib workspace function as common code for all
compression types.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Diffstat (limited to 'fs/btrfs/extent_io.c')
| -rw-r--r-- | fs/btrfs/extent_io.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 5e7a94d..f1d1981 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2028,8 +2028,11 @@ static int __extent_read_full_page(struct extent_io_tree *tree, BUG_ON(extent_map_end(em) <= cur); BUG_ON(end < cur); - if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags)) + if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags)) { this_bio_flag = EXTENT_BIO_COMPRESSED; + extent_set_compress_type(&this_bio_flag, + em->compress_type); + } iosize = min(extent_map_end(em) - cur, end - cur + 1); cur_end = min(extent_map_end(em) - 1, end); |
