From 7d5079aa8bc9ca25e61576820d07503b2a558f9b Mon Sep 17 00:00:00 2001 From: Himangi Saraogi Date: Thu, 24 Jul 2014 03:17:07 +0530 Subject: [PATCH] rbd: use rbd_segment_name_free() instead of kfree() Free memory allocated using kmem_cache_zalloc using kmem_cache_free rather than kfree. The helper rbd_segment_name_free does the job here. Its position is shifted above the calling function. The Coccinelle semantic patch that detects this change is as follows: // @@ 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) // Signed-off-by: Himangi Saraogi Acked-by: Julia Lawall Signed-off-by: Ilya Dryomov --- drivers/block/rbd.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index adedb393b374..703b728e05fa 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1139,6 +1139,13 @@ static void rbd_dev_mapping_clear(struct rbd_device *rbd_dev) rbd_dev->mapping.features = 0; } +static void rbd_segment_name_free(const char *name) +{ + /* The explicit cast here is needed to drop the const qualifier */ + + kmem_cache_free(rbd_segment_name_cache, (void *)name); +} + static const char *rbd_segment_name(struct rbd_device *rbd_dev, u64 offset) { char *name; @@ -1158,20 +1165,13 @@ 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); + rbd_segment_name_free(name); name = NULL; } return name; } -static void rbd_segment_name_free(const char *name) -{ - /* The explicit cast here is needed to drop the const qualifier */ - - kmem_cache_free(rbd_segment_name_cache, (void *)name); -} - static u64 rbd_segment_offset(struct rbd_device *rbd_dev, u64 offset) { u64 segment_size = (u64) 1 << rbd_dev->header.obj_order;