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authorChristoph Lameter <clameter@sgi.com>2008-04-14 19:11:41 +0300
committerPekka Enberg <penberg@cs.helsinki.fi>2008-04-27 18:28:39 +0300
commit114e9e89e668ec561c9b0f3dea7bcc8af7c29d21 (patch)
tree12ee7fdc5e3068d7c5e9bf8d7e5f65f75673bf7b /mm
parent31d33baf36bda7a2fea800648d87c9fe6155e7ca (diff)
downloadop-kernel-dev-114e9e89e668ec561c9b0f3dea7bcc8af7c29d21.zip
op-kernel-dev-114e9e89e668ec561c9b0f3dea7bcc8af7c29d21.tar.gz
slub: Drop DEFAULT_MAX_ORDER / DEFAULT_MIN_OBJECTS
We can now fallback to order 0 slabs. So set the slub_max_order to PAGE_CACHE_ORDER_COSTLY but keep the slub_min_objects at 4. This will mostly preserve the orders used in 2.6.25. F.e. The 2k kmalloc slab will use order 1 allocs and the 4k kmalloc slab order 2. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Diffstat (limited to 'mm')
-rw-r--r--mm/slub.c23
1 files changed, 2 insertions, 21 deletions
diff --git a/mm/slub.c b/mm/slub.c
index 06533f3..6572cef 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -149,25 +149,6 @@ static inline void ClearSlabDebug(struct page *page)
/* Enable to test recovery from slab corruption on boot */
#undef SLUB_RESILIENCY_TEST
-#if PAGE_SHIFT <= 12
-
-/*
- * Small page size. Make sure that we do not fragment memory
- */
-#define DEFAULT_MAX_ORDER 1
-#define DEFAULT_MIN_OBJECTS 4
-
-#else
-
-/*
- * Large page machines are customarily able to handle larger
- * page orders.
- */
-#define DEFAULT_MAX_ORDER 2
-#define DEFAULT_MIN_OBJECTS 8
-
-#endif
-
/*
* Mininum number of partial slabs. These will be left on the partial
* lists even if they are empty. kmem_cache_shrink may reclaim them.
@@ -1821,8 +1802,8 @@ static struct page *get_object_page(const void *x)
* take the list_lock.
*/
static int slub_min_order;
-static int slub_max_order = DEFAULT_MAX_ORDER;
-static int slub_min_objects = DEFAULT_MIN_OBJECTS;
+static int slub_max_order = PAGE_ALLOC_COSTLY_ORDER;
+static int slub_min_objects = 4;
/*
* Merge control. If this is set then no merging of slab caches will occur.
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