+ memcg-use-__gfp_nowarn-in-page-cgroup-allocation.patch added to -mm tree

+ memcg-use-__gfp_nowarn-in-page-cgroup-allocation.patch added to -mm tree

[akpm]

The patch titled
     memcg: use __GFP_NOWARN in page cgroup allocation
has been added to the -mm tree.  Its filename is
     memcg-use-__gfp_nowarn-in-page-cgroup-allocation.patch

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------------------------------------------------------
Subject: memcg: use __GFP_NOWARN in page cgroup allocation
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

page_cgroup's page allocation at init/memory hotplug uses kmalloc() and
vmalloc(). If kmalloc() failes, vmalloc() is used.

This is because vmalloc() is very limited resource on 32bit systems.
We want to use kmalloc() first.

But in this kind of call, __GFP_NOWARN should be specified.

Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_cgroup.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -puN mm/page_cgroup.c~memcg-use-__gfp_nowarn-in-page-cgroup-allocation mm/page_cgroup.c
--- a/mm/page_cgroup.c~memcg-use-__gfp_nowarn-in-page-cgroup-allocation
+++ a/mm/page_cgroup.c
@@ -114,7 +114,8 @@ static int __init_refok init_section_pag
 		nid = page_to_nid(pfn_to_page(pfn));
 		table_size = sizeof(struct page_cgroup) * PAGES_PER_SECTION;
 		if (slab_is_available()) {
-			base = kmalloc_node(table_size, GFP_KERNEL, nid);
+			base = kmalloc_node(table_size,
+					GFP_KERNEL | __GFP_NOWARN, nid);
 			if (!base)
 				base = vmalloc_node(table_size, nid);
 		} else {
_

Patches currently in -mm which might be from kamezawa.hiroyu@jp.fujitsu.com are

origin.patch
memcg-use-__gfp_nowarn-in-page-cgroup-allocation.patch
linux-next.patch
mm-fix-memmap-init-to-initialize-valid-memmap-for-memory-hole.patch
proc-pid-maps-dont-show-pgoff-of-pure-anon-vmas.patch
proc-pid-maps-dont-show-pgoff-of-pure-anon-vmas-checkpatch-fixes.patch
cgroup-css-id-support.patch
cgroup-fix-frequent-ebusy-at-rmdir.patch
memcg-use-css-id.patch
memcg-hierarchical-stat.patch
memcg-fix-shrinking-memory-to-return-ebusy-by-fixing-retry-algorithm.patch
memcg-fix-oom-killer-under-memcg.patch
memcg-fix-oom-killer-under-memcg-fix2.patch
memcg-fix-oom-killer-under-memcg-fix.patch
memcg-show-memcg-information-during-oom.patch
memcg-show-memcg-information-during-oom-fix2.patch
memcg-show-memcg-information-during-oom-fix.patch