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path: root/fs/ocfs2/dlm/dlmlock.c
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Diffstat (limited to 'fs/ocfs2/dlm/dlmlock.c')
-rw-r--r--fs/ocfs2/dlm/dlmlock.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/fs/ocfs2/dlm/dlmlock.c b/fs/ocfs2/dlm/dlmlock.c
index 52578d907d9..83a9f2972ac 100644
--- a/fs/ocfs2/dlm/dlmlock.c
+++ b/fs/ocfs2/dlm/dlmlock.c
@@ -53,6 +53,8 @@
#define MLOG_MASK_PREFIX ML_DLM
#include "cluster/masklog.h"
+static struct kmem_cache *dlm_lock_cache = NULL;
+
static DEFINE_SPINLOCK(dlm_cookie_lock);
static u64 dlm_next_cookie = 1;
@@ -64,6 +66,22 @@ static void dlm_init_lock(struct dlm_lock *newlock, int type,
static void dlm_lock_release(struct kref *kref);
static void dlm_lock_detach_lockres(struct dlm_lock *lock);
+int dlm_init_lock_cache(void)
+{
+ dlm_lock_cache = kmem_cache_create("o2dlm_lock",
+ sizeof(struct dlm_lock),
+ 0, SLAB_HWCACHE_ALIGN, NULL);
+ if (dlm_lock_cache == NULL)
+ return -ENOMEM;
+ return 0;
+}
+
+void dlm_destroy_lock_cache(void)
+{
+ if (dlm_lock_cache)
+ kmem_cache_destroy(dlm_lock_cache);
+}
+
/* Tell us whether we can grant a new lock request.
* locking:
* caller needs: res->spinlock
@@ -353,7 +371,7 @@ static void dlm_lock_release(struct kref *kref)
mlog(0, "freeing kernel-allocated lksb\n");
kfree(lock->lksb);
}
- kfree(lock);
+ kmem_cache_free(dlm_lock_cache, lock);
}
/* associate a lock with it's lockres, getting a ref on the lockres */
@@ -412,7 +430,7 @@ struct dlm_lock * dlm_new_lock(int type, u8 node, u64 cookie,
struct dlm_lock *lock;
int kernel_allocated = 0;
- lock = kzalloc(sizeof(*lock), GFP_NOFS);
+ lock = (struct dlm_lock *) kmem_cache_zalloc(dlm_lock_cache, GFP_NOFS);
if (!lock)
return NULL;