From: Akinobu Mita Date: Sun, 6 May 2007 21:50:19 +0000 (-0700) Subject: slob: fix page order calculation on not 4KB page X-Git-Tag: firefly_0821_release~30072 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4ab688c51226188f2d4ad4f789032c107944ef89;p=firefly-linux-kernel-4.4.55.git slob: fix page order calculation on not 4KB page SLOB doesn't calculate correct page order when page size is not 4KB. This patch fixes it with using get_order() instead of find_order() which is SLOB version of get_order(). Signed-off-by: Akinobu Mita Acked-by: Matt Mackall Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/mm/slob.c b/mm/slob.c index c9401a7eaa5f..c6933bc19bcd 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -150,15 +150,6 @@ static void slob_free(void *block, int size) spin_unlock_irqrestore(&slob_lock, flags); } -static int FASTCALL(find_order(int size)); -static int fastcall find_order(int size) -{ - int order = 0; - for ( ; size > 4096 ; size >>=1) - order++; - return order; -} - void *__kmalloc(size_t size, gfp_t gfp) { slob_t *m; @@ -174,7 +165,7 @@ void *__kmalloc(size_t size, gfp_t gfp) if (!bb) return 0; - bb->order = find_order(size); + bb->order = get_order(size); bb->pages = (void *)__get_free_pages(gfp, bb->order); if (bb->pages) { @@ -318,7 +309,7 @@ void *kmem_cache_alloc(struct kmem_cache *c, gfp_t flags) if (c->size < PAGE_SIZE) b = slob_alloc(c->size, flags, c->align); else - b = (void *)__get_free_pages(flags, find_order(c->size)); + b = (void *)__get_free_pages(flags, get_order(c->size)); if (c->ctor) c->ctor(b, c, SLAB_CTOR_CONSTRUCTOR); @@ -345,7 +336,7 @@ void kmem_cache_free(struct kmem_cache *c, void *b) if (c->size < PAGE_SIZE) slob_free(b, c->size); else - free_pages((unsigned long)b, find_order(c->size)); + free_pages((unsigned long)b, get_order(c->size)); } EXPORT_SYMBOL(kmem_cache_free);