linux-kernel - [PATCH v4 0/2] zram/zcomp: stream allocation fixes and tweaks

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Date:	Tue,  1 Dec 2015 21:36:28 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Minchan Kim <minchan@...nel.org>,
	Kyeongdon Kim <kyeongdon.kim@....com>,
	linux-kernel@...r.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: [PATCH v4 0/2] zram/zcomp: stream allocation fixes and tweaks

Hello,
        Two patches that address possible issues with compression
stream allocations under low memory or heavy fragmentation conditions.

These patches are considered to be a -stable material, however there
is no Cc -stable on "zram: try vmalloc() after kmalloc()" as of now.
We'd like to ask Kyeongdon to re-test and re-confirm (the patch has
been modified).

V4:
-- do not use __GFP_NOMEMALLOC for zcomp private allocation. thanks
to Kyeongdon Kim for doing a good job testing and to Minchan Kim for
analysis.

V3,V2,V1: tweaking  GFP flags, etc.

Kyeongdon Kim (1):
  zram: try vmalloc() after kmalloc()

Sergey Senozhatsky (1):
  zram/zcomp: use GFP_NOIO to allocate streams

 drivers/block/zram/zcomp.c     |  4 ++--
 drivers/block/zram/zcomp_lz4.c | 23 +++++++++++++++++++++--
 drivers/block/zram/zcomp_lzo.c | 23 +++++++++++++++++++++--
 3 files changed, 44 insertions(+), 6 deletions(-)

-- 
2.6.2

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