From 818cf5909701806285d977f7a9365c5cadb062a7 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Thu, 23 Apr 2009 09:58:22 +0300 Subject: [PATCH] slub: enforce MAX_ORDER slub_max_order may not be equal to or greater than MAX_ORDER. Additionally, if a single object cannot be placed in a slab of slub_max_order, it still must allocate slabs below MAX_ORDER. Acked-by: Christoph Lameter Signed-off-by: David Rientjes Signed-off-by: Pekka Enberg --- mm/slub.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/slub.c b/mm/slub.c index 7ab54ecbd3f3..0e1247ed2a06 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1909,7 +1909,7 @@ static inline int calculate_order(int size) * Doh this slab cannot be placed using slub_max_order. */ order = slab_order(size, 1, MAX_ORDER, 1); - if (order <= MAX_ORDER) + if (order < MAX_ORDER) return order; return -ENOSYS; } @@ -2522,6 +2522,7 @@ __setup("slub_min_order=", setup_slub_min_order); static int __init setup_slub_max_order(char *str) { get_option(&str, &slub_max_order); + slub_max_order = min(slub_max_order, MAX_ORDER - 1); return 1; } -- 2.34.1