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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2014-08-07 03:04:29 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 05:01:14 +0400
commitc8522a3a5832b843570a3315674f5a3575958a51 (patch)
treef9feb05f0a13898ca60750286000de02a6575300 /mm/slab.h
parent1fe00d50a9e81150de5000490b87ed227525cf09 (diff)
downloadlinux-c8522a3a5832b843570a3315674f5a3575958a51.tar.xz
slab: introduce alien_cache
Currently, we use array_cache for alien_cache. Although they are mostly similar, there is one difference, that is, need for spinlock. We don't need spinlock for array_cache itself, but to use array_cache for alien_cache, array_cache structure should have spinlock. This is needless overhead, so removing it would be better. This patch prepare it by introducing alien_cache and using it. In the following patch, we remove spinlock in array_cache. Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab.h')
-rw-r--r--mm/slab.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/slab.h b/mm/slab.h
index 3822b65edcc2..928823e17e58 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -276,7 +276,7 @@ struct kmem_cache_node {
unsigned int free_limit;
unsigned int colour_next; /* Per-node cache coloring */
struct array_cache *shared; /* shared per node */
- struct array_cache **alien; /* on other nodes */
+ struct alien_cache **alien; /* on other nodes */
unsigned long next_reap; /* updated without locking */
int free_touched; /* updated without locking */
#endif