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rbd: use rbd_segment_name_free() instead of kfree()

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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:

// <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>
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
This commit is contained in:
Himangi Saraogi
2014-07-24 03:17:07 +05:30
committed by Ilya Dryomov
parent d0d0db2268
commit 7d5079aa8b
1 changed files with 8 additions and 8 deletions
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drivers/block/rbd.c
+8 -8
View File
@@ -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;