Commit c7355d75 authored by Vlastimil Babka's avatar Vlastimil Babka
Browse files

mm/slub: simplify the last resort slab order calculation 



If calculate_order() can't fit even a single large object within
slub_max_order, it will try using the smallest necessary order that may
exceed slub_max_order but not MAX_ORDER.

Currently this is done with a call to calc_slab_order() which is
unnecessary. We can simply use get_order(size). No functional change.

Signed-off-by: default avatarVlastimil Babka <vbabka@suse.cz>
Reviewed-by: default avatarFeng Tang <feng.tang@intel.com>
Reviewed-and-tested-by: default avatarJay Patel <jaypatel@linux.ibm.com>
parent e519ce7a

mm/slub.c

+1 −1
Original line number Diff line number Diff line
@@ -4193,7 +4193,7 @@ static inline int calculate_order(unsigned int size) 
	/*

	 * Doh this slab cannot be placed using slub_max_order.

	 */

	order = calc_slab_order(size, 1, MAX_ORDER, 1);

	order = get_order(size);

	if (order <= MAX_ORDER)

		return order;

	return -ENOSYS;