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 <akinobu.mita@gmail.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/slob.c b/mm/slob.c
index c9401a7..c6933bc 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -150,15 +150,6 @@
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 @@
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 @@
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 @@
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);