From 7b55f620e6908fec2d51751320c2a9459b5f375f Mon Sep 17 00:00:00 2001
From: Christoph Lameter <clameter@sgi.com>
Date: Tue, 17 Jul 2007 04:03:27 -0700
Subject: [PATCH] SLUB: Simplify dma index -> size calculation
There is no need to caculate the dma slab size ourselves. We can simply
lookup the size of the corresponding non dma slab.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
mm/slub.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 71988f9b9c55..2ae2dae12d9a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2289,15 +2289,7 @@ static noinline struct kmem_cache *dma_kmalloc_cache(int index, gfp_t flags)
if (!x)
panic("Unable to allocate memory for dma cache\n");
- if (index <= KMALLOC_SHIFT_HIGH)
- realsize = 1 << index;
- else {
- if (index == 1)
- realsize = 96;
- else
- realsize = 192;
- }
-
+ realsize = kmalloc_caches[index].objsize;
text = kasprintf(flags & ~SLUB_DMA, "kmalloc_dma-%d",
(unsigned int)realsize);
s = create_kmalloc_cache(x, text, realsize, flags);
--
GitLab