linux-kernel - [PATCH 24/39] dlm: drop null test before destroy functions

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Date:	Sun, 13 Sep 2015 14:15:17 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Christine Caulfield <ccaulfie@...hat.com>
Cc:	sergey.senozhatsky@...il.com, kernel-janitors@...r.kernel.org,
	David Teigland <teigland@...hat.com>, cluster-devel@...hat.com,
	linux-kernel@...r.kernel.org
Subject: [PATCH 24/39] dlm: drop null test before destroy functions

Remove unneeded NULL test.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@ expression x; @@
-if (x != NULL)
  \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 fs/dlm/memory.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/dlm/memory.c b/fs/dlm/memory.c
index 7cd24bc..0349c89 100644
--- a/fs/dlm/memory.c
+++ b/fs/dlm/memory.c
@@ -38,10 +38,8 @@ int __init dlm_memory_init(void)
 
 void dlm_memory_exit(void)
 {
-	if (lkb_cache)
-		kmem_cache_destroy(lkb_cache);
-	if (rsb_cache)
-		kmem_cache_destroy(rsb_cache);
+	kmem_cache_destroy(lkb_cache);
+	kmem_cache_destroy(rsb_cache);
 }
 
 char *dlm_allocate_lvb(struct dlm_ls *ls)

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