[PATCH] rbd: Use kmem_cache_free

[Himangi Saraogi <himangi774@gmail.com>]

Free memory allocated using kmem_cache_zalloc using kmem_cache_free
rather than kfree.

The Coccinelle semantic patch that makes this change is as follows:

// <smpl>
@@
expression x,E,c;
@@

 x = \(kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\)(c,...)
 ... when != x = E
     when != &x
?-kfree(x)
+kmem_cache_free(c,x)
// </smpl>

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
---
 drivers/block/rbd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index b2c98c1..8381c54 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1158,7 +1158,7 @@ static const char *rbd_segment_name(struct rbd_device *rbd_dev, u64 offset)
 	if (ret < 0 || ret > CEPH_MAX_OID_NAME_LEN) {
 		pr_err("error formatting segment name for #%llu (%d)\n",
 			segment, ret);
-		kfree(name);
+		kmem_cache_free(rbd_segment_name_cache, name);
 		name = NULL;
 	}
 
-- 
1.9.1