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| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2022-11-09 20:50:46 +0900 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-11-30 15:58:53 -0800 |
| commit | b46f9ea3cb351587b2cfc68f7211f7a7cc5b6673 (patch) | |
| tree | daf5737bdb1ea5c912e3d308ca2aeefee9037d8a /Documentation/admin-guide | |
| parent | 443dd798062c1549e790539e572cbda4b7a8df30 (diff) | |
| download | linux-b46f9ea3cb351587b2cfc68f7211f7a7cc5b6673.tar.bz2 | |
zram: add incompressible writeback
Add support for incompressible pages writeback:
echo incompressible > /sys/block/zramX/writeback
Link: https://lkml.kernel.org/r/20221109115047.2921851-13-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Alexey Romanov <avromanov@sberdevices.ru>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Suleiman Souhlal <suleiman@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/blockdev/zram.rst | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/admin-guide/blockdev/zram.rst b/Documentation/admin-guide/blockdev/zram.rst index d898b7ace33d..f14c8c2e42f3 100644 --- a/Documentation/admin-guide/blockdev/zram.rst +++ b/Documentation/admin-guide/blockdev/zram.rst @@ -348,8 +348,13 @@ this can be accomplished with:: echo huge_idle > /sys/block/zramX/writeback +If a user chooses to writeback only incompressible pages (pages that none of +algorithms can compress) this can be accomplished with:: + + echo incompressible > /sys/block/zramX/writeback + If an admin wants to write a specific page in zram device to the backing device, -they could write a page index into the interface. +they could write a page index into the interface:: echo "page_index=1251" > /sys/block/zramX/writeback |