lib/sg_pool.c: remove unnecessary null check when freeing object

mempool_destroy(NULL) and kmem_cache_destroy(NULL) are legal

Link: http://lkml.kernel.org/r/1533054107-35657-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/lib/sg_pool.c b/lib/sg_pool.c
index 6dd3061..d1c1e63 100644 (file)
--- a/lib/sg_pool.c
+++ b/lib/sg_pool.c
@@ -148,10 +148,9 @@ static __init int sg_pool_init(void)
 cleanup_sdb:
        for (i = 0; i < SG_MEMPOOL_NR; i++) {
                struct sg_pool *sgp = sg_pools + i;
-               if (sgp->pool)
-                       mempool_destroy(sgp->pool);
-               if (sgp->slab)
-                       kmem_cache_destroy(sgp->slab);
+
+               mempool_destroy(sgp->pool);
+               kmem_cache_destroy(sgp->slab);
        }
 
        return -ENOMEM;