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Date: Fri, 9 Aug 2013 18:37:24 +0900
From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: [PATCH 17/18] mm, hugetlb: retry if we fail to allocate a
 hugepage with use_reserve
Message-ID: <20130809093724.GA11091@lge.com>
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To: David Gibson <david@gibson.dropbear.id.au>
Cc: Davidlohr Bueso <davidlohr@hp.com>, Andrew Morton <akpm@linux-foundation.org>, Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>, Michal Hocko <mhocko@suse.cz>, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>, Hugh Dickins <hughd@google.com>, Davidlohr Bueso <davidlohr.bueso@hp.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Wanpeng Li <liwanp@linux.vnet.ibm.com>, Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>, Hillf Danton <dhillf@gmail.com>

> I once attempted an approach involving an atomic counter of the number
> of "in flight" hugepages, only retrying when it's non zero.  Working
> out a safe ordering for all the updates to get all the cases right
> made my brain melt though, and I never got it working.

I sent v2 few seconds before. My new approach is similar as yours.
Could you review my patches to save my brain to be melted? :)

Thanks.

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