diff options
| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2024-09-02 19:56:03 +0900 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-09 16:39:09 -0700 |
| commit | 4eac932103a5d8c3a1bdf6776dbc1a178c31d896 (patch) | |
| tree | 8a2caaf827dcd6150c15d3f6571b99a655285227 /Documentation/admin-guide/blockdev/zram.rst | |
| parent | eb826a01909a2d39660ed5a486ebc43e831254bc (diff) | |
zram: introduce algorithm_params device attribute
This attribute is used to setup compression algorithms' parameters, so we
can tweak algorithms' characteristics. At this point only 'level' is
supported (to be extended in the future).
Each call sets up parameters for one particular algorithm, which should be
specified either by the algorithm's priority or algo name. This is
expected to be called after corresponding algorithm is selected via
comp_algorithm or recomp_algorithm.
echo "priority=0 level=1" > /sys/block/zram0/algorithm_params
or
echo "algo=zstd level=1" > /sys/block/zram0/algorithm_params
Link: https://lkml.kernel.org/r/20240902105656.1383858-16-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nick Terrell <terrelln@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/admin-guide/blockdev/zram.rst')
| -rw-r--r-- | Documentation/admin-guide/blockdev/zram.rst | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/admin-guide/blockdev/zram.rst b/Documentation/admin-guide/blockdev/zram.rst index 181d55d64326..96d81dc12528 100644 --- a/Documentation/admin-guide/blockdev/zram.rst +++ b/Documentation/admin-guide/blockdev/zram.rst @@ -198,6 +198,7 @@ writeback_limit_enable RW show and set writeback_limit feature max_comp_streams RW the number of possible concurrent compress operations comp_algorithm RW show and change the compression algorithm +algorithm_params WO setup compression algorithm parameters compact WO trigger memory compaction debug_stat RO this file is used for zram debugging purposes backing_dev RW set up backend storage for zram to write out |