linux-kernel - [PATCH 0/2] Drivers: hv: hv_balloon: avoid OOM killer on the ballooning path

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Message-Id: <1424363230-3758-1-git-send-email-vkuznets@redhat.com>
Date:	Thu, 19 Feb 2015 17:27:08 +0100
From:	Vitaly Kuznetsov <vkuznets@...hat.com>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>,
	devel@...uxdriverproject.org
Cc:	Haiyang Zhang <haiyangz@...rosoft.com>,
	linux-kernel@...r.kernel.org, Dexuan Cui <decui@...rosoft.com>
Subject: [PATCH 0/2] Drivers: hv: hv_balloon: avoid OOM killer on the ballooning path

In some cases host asks us to overballoon and this triggers OOM killer which
eventually kills everyone. The easiest way to get into such situation is to
avoid onlining memory-hotplugged blocks. Address the issue twice:
- Report offline pages as used to the host so it won't ask us to overballoon;
- Avoid ballooning below the 'floor'.

Vitaly Kuznetsov (2):
  Drivers: hv: hv_balloon: report offline pages as being used
  Drivers: hv: hv_balloon: refuse to balloon below the floor

 drivers/hv/hv_balloon.c | 44 +++++++++++++++++++++++++++++++++++---------
 1 file changed, 35 insertions(+), 9 deletions(-)

-- 
1.9.3

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