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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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3
fs/btrfs/backref.c
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@ -148,8 +148,7 @@ int __init btrfs_prelim_ref_init(void)
void btrfs_prelim_ref_exit(void)
{
if (btrfs_prelim_ref_cache)
kmem_cache_destroy(btrfs_prelim_ref_cache);
kmem_cache_destroy(btrfs_prelim_ref_cache);
}
/*