From: Nick Piggin <npiggin@suse.de>
Date: Tue, 5 May 2009 09:13:44 +0000 (+1000)
Subject: mm: SLUB fix reclaim_state
X-Git-Tag: v2.6.30-rc7~41^2^3~1
X-Git-Url: http://bbs.cooldavid.org/git/?a=commitdiff_plain;h=1eb5ac6466d4be7b15b38ce3ab709600f1bc891f;p=net-next-2.6.git

mm: SLUB fix reclaim_state

SLUB does not correctly account reclaim_state.reclaimed_slab, so it will
break memory reclaim. Account it like SLAB does.

Cc: stable@kernel.org
Cc: linux-mm@kvack.org
Cc: Matt Mackall <mpm@selenic.com>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
---

diff --git a/mm/slub.c b/mm/slub.c
index 7ab54ecbd3f..aa34913a41e 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/mm.h>
+#include <linux/swap.h> /* struct reclaim_state */
 #include <linux/module.h>
 #include <linux/bit_spinlock.h>
 #include <linux/interrupt.h>
@@ -1170,6 +1171,8 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
 
 	__ClearPageSlab(page);
 	reset_page_mapcount(page);
+	if (current->reclaim_state)
+		current->reclaim_state->reclaimed_slab += pages;
 	__free_pages(page, order);
 }