btrfs: drop null testing before destroy functions
Cleanup.
kmem_cache_destroy has support NULL argument checking,
so drop the double null testing before calling it.
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 84fb56d..cdbadea 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -20,8 +20,7 @@
void extent_map_exit(void)
{
- if (extent_map_cache)
- kmem_cache_destroy(extent_map_cache);
+ kmem_cache_destroy(extent_map_cache);
}
/**