linux-kernel - [PATCH] zram: use notify_free to account all free notifications

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Message-Id: <1409921829-12261-1-git-send-email-sergey.senozhatsky@gmail.com>
Date:	Fri,  5 Sep 2014 21:57:08 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Minchan Kim <minchan@...nel.org>,
	Jerome Marchand <jmarchan@...hat.com>,
	Nitin Gupta <ngupta@...are.org>,
	Chao Yu <chao2.yu@...sung.com>, linux-kernel@...r.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: [PATCH] zram: use notify_free to account all free notifications

Hello,

This patch change the way zram uses `notify_free' stat attr. Currently,
this attr accounts only swap free notifications, iow used only when zram
device is a swap device. The patch preserves the existing behaviour and
additionally makes `notify_free' universal, so it's also used by zram to
account REQ_DISCARDs when zram is not used as a swap device.

Please refer to:
https://lkml.org/lkml/2014/9/3/1115

Please revert 2cbf6f7bea1048ab5 (zram: add num_{discard_req, discarded}
for discard stat) and apply this patch.

Sergey Senozhatsky (1):
  zram: use notify_free to account all free notifications

 Documentation/ABI/testing/sysfs-block-zram | 13 ++++++++-----
 drivers/block/zram/zram_drv.c              |  2 +-
 2 files changed, 9 insertions(+), 6 deletions(-)

-- 
2.1.0.134.gb1ae451

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