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authorLi Zefan <lizf@cn.fujitsu.com>2010-12-17 14:21:50 +0800
committerLi Zefan <lizf@cn.fujitsu.com>2010-12-22 23:15:45 +0800
commit261507a02ccba9afda919852263b6bc1581ce1ef (patch)
treec16bc657ff4e29a87042ceb379487f24dff01035 /fs/btrfs/extent_map.c
parent4b72029dc3fd6ba7dc45ccd1cf0aa0ebfa209bd3 (diff)
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_map.c')
-rw-r--r--fs/btrfs/extent_map.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 23cb8da3ff6..b0e1fce1253 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -3,6 +3,7 @@
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/hardirq.h>
+#include "ctree.h"
#include "extent_map.h"
@@ -54,6 +55,7 @@ struct extent_map *alloc_extent_map(gfp_t mask)
return em;
em->in_tree = 0;
em->flags = 0;
+ em->compress_type = BTRFS_COMPRESS_NONE;
atomic_set(&em->refs, 1);
return em;
}