The patch titled
Subject: mm/slub: use get_order() instead of fls()
has been added to the -mm tree. Its filename is
mm-slub-use-get_order-instead-of-fls.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-slub-use-get_order-instead-of-fls.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-slub-use-get_order-instead-of-fls.patch
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------------------------------------------------------
From: Wei Yang <weiyang@xxxxxxxxxxxxxxxxxx>
Subject: mm/slub: use get_order() instead of fls()
get_order() is more easy to understand.
This patch just replaces it.
Signed-off-by: Wei Yang <weiyang@xxxxxxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slub.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff -puN mm/slub.c~mm-slub-use-get_order-instead-of-fls mm/slub.c
--- a/mm/slub.c~mm-slub-use-get_order-instead-of-fls
+++ a/mm/slub.c
@@ -3022,8 +3022,7 @@ static inline int slab_order(int size, i
if (order_objects(min_order, size, reserved) > MAX_OBJS_PER_PAGE)
return get_order(size * MAX_OBJS_PER_PAGE) - 1;
- for (order = max(min_order,
- fls(min_objects * size - 1) - PAGE_SHIFT);
+ for (order = max(min_order, get_order(min_objects * size));
order <= max_order; order++) {
unsigned long slab_size = PAGE_SIZE << order;
_
Patches currently in -mm which might be from weiyang@xxxxxxxxxxxxxxxxxx are
mm-slub-correct-the-comment-in-calculate_order.patch
mm-slub-use-get_order-instead-of-fls.patch
mm-slub-calculate-start-order-with-reserved-in-consideration.patch
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