[PATCH] mm/balloon_compaction: suppress allocation warnings

From: Nadav Amit <namit@vmware.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>,
	virtualization@lists.linux-foundation.org, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org, Nadav Amit <namit@vmware.com>
Subject: [PATCH] mm/balloon_compaction: suppress allocation warnings
Date: Tue, 20 Aug 2019 02:16:46 -0700	[thread overview]
Message-ID: <20190820091646.29642-1-namit@vmware.com> (raw)

There is no reason to print warnings when balloon page allocation fails,
as they are expected and can be handled gracefully.  Since VMware
balloon now uses balloon-compaction infrastructure, and suppressed these
warnings before, it is also beneficial to suppress these warnings to
keep the same behavior that the balloon had before.

Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Nadav Amit <namit@vmware.com>
---
 mm/balloon_compaction.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/balloon_compaction.c b/mm/balloon_compaction.c
index 798275a51887..26de020aae7b 100644
--- a/mm/balloon_compaction.c
+++ b/mm/balloon_compaction.c
@@ -124,7 +124,8 @@ EXPORT_SYMBOL_GPL(balloon_page_list_dequeue);
 struct page *balloon_page_alloc(void)
 {
 	struct page *page = alloc_page(balloon_mapping_gfp_mask() |
-				       __GFP_NOMEMALLOC | __GFP_NORETRY);
+				       __GFP_NOMEMALLOC | __GFP_NORETRY |
+				       __GFP_NOWARN);
 	return page;
 }
 EXPORT_SYMBOL_GPL(balloon_page_alloc);
-- 
2.19.1

