From: Christoph Lameter <cl@linux.com>
Date: Fri, 22 Jul 2011 14:35:14 +0000 (-0500)
Subject: slub: When allocating a new slab also prep the first object
X-Git-Tag: v3.1-rc1~114^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9e577e8b46ab0c38970c0f0cd7eae62e6dffddee;p=profile%2Fivi%2Fkernel-x86-ivi.git

slub: When allocating a new slab also prep the first object

We need to branch to the debug code for the first object if we allocate
a new slab otherwise the first object will be marked wrongly as inactive.

Tested-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---

diff --git a/mm/slub.c b/mm/slub.c
index 7836b45..e842c19 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2082,6 +2082,9 @@ new_slab:
 		stat(s, ALLOC_SLAB);
 		c->node = page_to_nid(page);
 		c->page = page;
+
+		if (kmem_cache_debug(s))
+			goto debug;
 		goto load_freelist;
 	}
 	if (!(gfpflags & __GFP_NOWARN) && printk_ratelimit())