All of lore.kernel.org
 help / color / mirror / Atom feed
From: Minchan Kim <minchan@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
	Joey Pabalinas <joeypabalinas@gmail.com>,
	Minchan Kim <minchan@kernel.org>
Subject: [PATCH v4 0/7] zram idle page writeback
Date: Mon,  3 Dec 2018 11:40:38 +0900	[thread overview]
Message-ID: <20181203024045.153534-1-minchan@kernel.org> (raw)

Inherently, swap device has many idle pages which are rare touched since
it was allocated. It is never problem if we use storage device as swap.
However, it's just waste for zram-swap.

This patchset supports zram idle page writeback feature.

* Admin can define what is idle page "no access since X time ago"
* Admin can define when zram should writeback them
* Admin can define when zram should stop writeback to prevent wearout

Detail is on each patch's description.

Below first two patches are -stable material so it could go first
separately with others in this series.

  zram: fix lockdep warning of free block handling
  zram: fix double free backing device

* from v3
  - add more words in changelog - akpm
  - clarification writeback limit - akpm
  - fix 4k unit of bd_stat - akpm
  - change writeback_limit interface - minchan
  - add reviewed-by - sergey, joey

* from v2
  - use strscpy instead of strlcpy - Joey Pabalinas
  - remove irqlock for bitmap op - akpm
  - don't use page as stat unit - akpm

* from v1
  - add fix dobule free backing device - minchan
  - change writeback/idle interface - minchan 
  - remove direct incompressible page writeback - sergey

Minchan Kim (7):
  zram: fix lockdep warning of free block handling
  zram: fix double free backing device
  zram: refactoring flags and writeback stuff
  zram: introduce ZRAM_IDLE flag
  zram: support idle/huge page writeback
  zram: add bd_stat statistics
  zram: writeback throttle

 Documentation/ABI/testing/sysfs-block-zram |  32 ++
 Documentation/blockdev/zram.txt            |  80 +++-
 drivers/block/zram/Kconfig                 |   5 +-
 drivers/block/zram/zram_drv.c              | 502 +++++++++++++++------
 drivers/block/zram/zram_drv.h              |  19 +-
 5 files changed, 476 insertions(+), 162 deletions(-)

-- 
2.20.0.rc1.387.gf8505762e3-goog


             reply	other threads:[~2018-12-03  2:40 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-03  2:40 Minchan Kim [this message]
2018-12-03  2:40 ` [PATCH v4 1/7] zram: fix lockdep warning of free block handling Minchan Kim
2018-12-03  2:40 ` [PATCH v4 2/7] zram: fix double free backing device Minchan Kim
2018-12-03  2:40 ` [PATCH v4 3/7] zram: refactoring flags and writeback stuff Minchan Kim
2018-12-03  2:40 ` [PATCH v4 4/7] zram: introduce ZRAM_IDLE flag Minchan Kim
2018-12-03  2:40 ` [PATCH v4 5/7] zram: support idle/huge page writeback Minchan Kim
2018-12-03  2:40 ` [PATCH v4 6/7] zram: add bd_stat statistics Minchan Kim
2018-12-03  2:40 ` [PATCH v4 7/7] zram: writeback throttle Minchan Kim
2018-12-03  5:50   ` Sergey Senozhatsky
2018-12-03  6:02     ` Sergey Senozhatsky
2018-12-03  6:11       ` Sergey Senozhatsky
2018-12-04  2:08 ` [PATCH v4 0/7] zram idle page writeback Sergey Senozhatsky

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20181203024045.153534-1-minchan@kernel.org \
    --to=minchan@kernel.org \
    --cc=akpm@linux-foundation.org \
    --cc=joeypabalinas@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=sergey.senozhatsky.work@gmail.com \
    --subject='Re: [PATCH v4 0/7] zram idle page writeback' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.