lkml.org 
[lkml]   [2018]   [Nov]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v3 0/7] zram idle page writeback
Date
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 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 | 51 ++-
drivers/block/zram/Kconfig | 5 +-
drivers/block/zram/zram_drv.c | 501 +++++++++++++++------
drivers/block/zram/zram_drv.h | 19 +-
5 files changed, 446 insertions(+), 162 deletions(-)

--
2.20.0.rc0.387.gc7a69e6b6c-goog

\
 
 \ /
  Last update: 2018-11-27 06:57    [W:0.087 / U:0.596 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site