linux-kernel - Re: [PATCH v2] zram: Prevent page allocation failure during zcomp_strm

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Message-ID: <20151123033511.GB7449@swordfish>
Date:	Mon, 23 Nov 2015 12:35:11 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:	Minchan Kim <minchan@...nel.org>
Cc:	Kyeongdon Kim <kyeongdon.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>, ngupta@...are.org,
	linux-kernel@...r.kernel.org, sergey.senozhatsky@...il.com,
	sergey.senozhatsky.work@...il.com
Subject: Re: [PATCH v2] zram: Prevent page allocation failure during
 zcomp_strm_alloc

On (11/23/15 12:14), Sergey Senozhatsky wrote:
> 
> yes, GFP_KERNEL looks a bit fragile to me too. And may be zcomp_strm_alloc()
> and comp->backend->create() deserve GFP_NOFS. I believe I sent a patch doing
> this a while ago: https://lkml.org/lkml/2015/6/16/465
>

perhaps just __GFP_RECLAIM (GFP_NOIO), not  '__GFP_RECLAIM | __GFP_IO'
(GFP_NOFS), is better.

	-ss
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