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btrfs: drop null testing before destroy functions

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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>
This commit is contained in:
Kinglong Mee
2016-01-29 21:36:35 +08:00
committed by David Sterba
parent 89771cc98c
commit 5598e9005a
9 changed files with 17 additions and 34 deletions
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6
fs/btrfs/extent_io.c
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@@ -206,10 +206,8 @@ void extent_io_exit(void)
* destroy caches.
*/
rcu_barrier();
if (extent_state_cache)
kmem_cache_destroy(extent_state_cache);
if (extent_buffer_cache)
kmem_cache_destroy(extent_buffer_cache);
kmem_cache_destroy(extent_state_cache);
kmem_cache_destroy(extent_buffer_cache);
if (btrfs_bioset)
bioset_free(btrfs_bioset);
}