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zramctl: add zstd compression algorithm option 

Add information about the possible value 'zstd' for the 'zramctl --algorithm'
option to 'zramctl --help' and zramctl (8) manpage. The kernel supports zram
with zstd compression starting with 4.15 (see
https://lore.kernel.org/lkml/20170912050005.3247-1-sergey.senozhatsky@gmail.com/#r).

Signed-off-by: Jan Samek <samekh@email.cz>
This commit is contained in:
Jan Samek 2021-08-16 21:22:15 +02:00
parent 5a72054bd0
commit ee16b9ff45
2 changed files with 2 additions and 2 deletions
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2
sys-utils/zramctl.8.adoc
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@ -38,7 +38,7 @@ Note that _zramdev_ node specified on command line has to already exist. The com
== OPTIONS
*-a*, **--algorithm lzo**|**lz4**|**lz4hc**|**deflate**|*842*::
*-a*, **--algorithm lzo**|**lz4**|**lz4hc**|**deflate**|**842**|**zstd**::
Set the compression algorithm to be used for compressing data in the zram device.
*-f*, *--find*::

2
sys-utils/zramctl.c
View File

@ -547,7 +547,7 @@ static void __attribute__((__noreturn__)) usage(void)
fputs(_("Set up and control zram devices.\n"), out);
fputs(USAGE_OPTIONS, out);
fputs(_(" -a, --algorithm lzo|lz4|lz4hc|deflate|842 compression algorithm to use\n"), out);
fputs(_(" -a, --algorithm lzo|lz4|lz4hc|deflate|842|zstd compression algorithm to use\n"), out);
fputs(_(" -b, --bytes print sizes in bytes rather than in human readable format\n"), out);
fputs(_(" -f, --find find a free device\n"), out);
fputs(_(" -n, --noheadings don't print headings\n"), out);