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authorChristoph Lameter <cl@linux.com>2012-07-06 16:25:12 -0400
committerPekka Enberg <penberg@kernel.org>2012-07-09 05:13:41 -0400
commit18004c5d4084d965aa1396392706b8688306427a (patch)
treeae480cb4514cbddf38ee43ec4513f59cfa42c3d7 /mm/slab_common.c
parent97d06609158e61f6bdf538c4a6788e2de492236f (diff)
mm, sl[aou]b: Use a common mutex definition
Use the mutex definition from SLAB and make it the common way to take a sleeping lock. This has the effect of using a mutex instead of a rw semaphore for SLUB. SLOB gains the use of a mutex for kmem_cache_create serialization. Not needed now but SLOB may acquire some more features later (like slabinfo / sysfs support) through the expansion of the common code that will need this. Reviewed-by: Glauber Costa <glommer@parallels.com> Reviewed-by: Joonsoo Kim <js1304@gmail.com> Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm/slab_common.c')
-rw-r--r--mm/slab_common.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c
index ca1aaf69a1f5..50e1ff10bff9 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -19,6 +19,8 @@
19#include "slab.h" 19#include "slab.h"
20 20
21enum slab_state slab_state; 21enum slab_state slab_state;
22LIST_HEAD(slab_caches);
23DEFINE_MUTEX(slab_mutex);
22 24
23/* 25/*
24 * kmem_cache_create - Create a cache. 26 * kmem_cache_create - Create a cache.