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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2011-09-25 17:51:06 +0900
committerJames Morris <jmorris@namei.org>2011-09-26 10:46:22 +1000
commita427fd14d3edf6396c4b9638dbc8e2972afaa05b (patch)
tree2f8fdffa989f6e18f57bfb61f5ecfc4fdcf8d729 /security/tomoyo/gc.c
parentf9732ea145886786a6f8b0493bc2239e70cbacdb (diff)
downloadlinux-a427fd14d3edf6396c4b9638dbc8e2972afaa05b.tar.gz
TOMOYO: Remove tomoyo_policy_memory_lock spinlock.
tomoyo_policy_lock mutex already protects it. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/tomoyo/gc.c')
-rw-r--r--security/tomoyo/gc.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/security/tomoyo/gc.c b/security/tomoyo/gc.c
index f2295c65f1e..c3214b32dbf 100644
--- a/security/tomoyo/gc.c
+++ b/security/tomoyo/gc.c
@@ -8,6 +8,21 @@
#include <linux/kthread.h>
#include <linux/slab.h>
+/**
+ * tomoyo_memory_free - Free memory for elements.
+ *
+ * @ptr: Pointer to allocated memory.
+ *
+ * Returns nothing.
+ *
+ * Caller holds tomoyo_policy_lock mutex.
+ */
+static inline void tomoyo_memory_free(void *ptr)
+{
+ tomoyo_memory_used[TOMOYO_MEMORY_POLICY] -= ksize(ptr);
+ kfree(ptr);
+}
+
/* The list for "struct tomoyo_io_buffer". */
static LIST_HEAD(tomoyo_io_buffer_list);
/* Lock for protecting tomoyo_io_buffer_list. */
@@ -215,6 +230,8 @@ static void tomoyo_del_acl(struct list_head *element)
* @element: Pointer to "struct list_head".
*
* Returns nothing.
+ *
+ * Caller holds tomoyo_policy_lock mutex.
*/
static inline void tomoyo_del_domain(struct list_head *element)
{
@@ -416,12 +433,13 @@ static void tomoyo_try_to_gc(const enum tomoyo_policy_id type,
(element, typeof(struct tomoyo_domain_info),
list)->users))
goto reinject;
- tomoyo_del_domain(element);
break;
case TOMOYO_MAX_POLICY:
break;
}
mutex_lock(&tomoyo_policy_lock);
+ if (type == TOMOYO_ID_DOMAIN)
+ tomoyo_del_domain(element);
tomoyo_memory_free(element);
return;
reinject: