SLOB doesn't caluclate 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().
Cc: Matt Mackall <[email protected]>
Signed-off-by: Akinobu Mita <[email protected]>
Index: 2.6-mm/mm/slob.c
===================================================================
--- 2.6-mm.orig/mm/slob.c
+++ 2.6-mm/mm/slob.c
@@ -150,15 +150,6 @@ static void slob_free(void *block, int s
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
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 *
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);
-
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