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| author |   Minchan Kim <minchan@kernel.org> | 2017-09-06 16:20:10 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-06 17:27:25 -0700 |
| commit | 5a47074f0279421778f97b1b1e75686696a5f42a (patch) | |
| tree | fd81ff3aaa8a707428ba2daadb66fc2c6b28c297 /drivers | |
| parent | zram: read page from backing device (diff) | |
| download | linux-dev-5a47074f0279421778f97b1b1e75686696a5f42a.tar.xz linux-dev-5a47074f0279421778f97b1b1e75686696a5f42a.zip | |
zram: add config and doc file for writeback feature
This patch adds document and kconfig for using of writeback feature.
Link: http://lkml.kernel.org/r/1498459987-24562-10-git-send-email-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Juneho Choi <juno.choi@lge.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/zram/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig index b8ecba6dcd3b..7cd4a8ec3c8f 100644 --- a/drivers/block/zram/Kconfig +++ b/drivers/block/zram/Kconfig @@ -13,3 +13,15 @@ config ZRAM disks and maybe many more. See zram.txt for more information. + +config ZRAM_WRITEBACK + bool "Write back incompressible page to backing device" + depends on ZRAM + default n + help + With incompressible page, there is no memory saving to keep it + in memory. Instead, write it out to backing device. + For this feature, admin should set up backing device via + /sys/block/zramX/backing_dev. + + See zram.txt for more infomration. |