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Date: Mon, 25 Jan 2016 21:46:54 +0900
From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: stable@vger.kernel.org
Cc: Minchan Kim <minchan@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Kyeongdon Kim <kyeongdon.kim@lge.com>,
	linux-kernel@vger.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Subject: [stable] upstream 3d5fe03a3ea01 -stable backport request
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Hello,

Please add upstream 'commit 3d5fe03a3ea01 ("zram/zcomp: use
GFP_NOIO to allocate streams")' to stable releases.


:commit 3d5fe03a3ea013060ebba2a811aeb0f23f56aefa
:Author: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
:
:    zram/zcomp: use GFP_NOIO to allocate streams
:    
:    We can end up allocating a new compression stream with GFP_KERNEL from
:    within the IO path, which may result is nested (recursive) IO
:    operations.  That can introduce problems if the IO path in question is a
:    reclaimer, holding some locks that will deadlock nested IOs.
:    
:    Allocate streams and working memory using GFP_NOIO flag, forbidding
:    recursive IO and FS operations.


	-ss