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authorTsutomu Itoh <t-itoh@jp.fujitsu.com>2011-02-14 00:45:29 +0000
committerChris Mason <chris.mason@oracle.com>2011-02-14 16:21:37 -0500
commitc26a920373a983b52223eed5a13b97404d8b4158 (patch)
treea7f76fe1b0cecbc712f0b152ff537805f126b113 /fs/btrfs/extent_map.c
parent67100f255dba284bcbb5ce795355dad1cff35658 (diff)
Btrfs: check return value of alloc_extent_map()
I add the check on the return value of alloc_extent_map() to several places. In addition, alloc_extent_map() returns only the address or NULL. Therefore, check by IS_ERR() is unnecessary. So, I remove IS_ERR() checking. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_map.c')
-rw-r--r--fs/btrfs/extent_map.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index b0e1fce1253..2b6c12e983b 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -51,8 +51,8 @@ struct extent_map *alloc_extent_map(gfp_t mask)
{
struct extent_map *em;
em = kmem_cache_alloc(extent_map_cache, mask);
- if (!em || IS_ERR(em))
- return em;
+ if (!em)
+ return NULL;
em->in_tree = 0;
em->flags = 0;
em->compress_type = BTRFS_COMPRESS_NONE;