Author: Julia Lawall <Julia.Lawall@lip6.fr> Remove unneeded NULL test. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression x; @@ -if (x != NULL) \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x); // Signed-off-by: Julia Lawall Signed-off-by: NeilBrown — drivers/md/multipath.c | 3 +– drivers/md/raid1.c | 6 ++—- drivers/md/raid10.c | 9 +++—— drivers/md/raid5.c | 3 +– 4 files changed, …