Re: [PATCH] zram: check compressor name before setting it

Sergey Senozhatsky
2015-05-22T08:55:52Z

On (05/22/15 10:31), Marcin Jabrzyk wrote:
> Zram sysfs interface was not making any check of
> proper compressor name when setting it.
> Any name is accepted, but further tries of device
> creation would end up with not very meaningfull error.
> eg.
>
> echo lz0 > comp_algorithm
> echo 200M > disksize
> echo: write error: Invalid argument
>

no.

zram already complains about failed comp backend creation.
it's in dmesg (or syslog, etc.):

"zram: Cannot initialise %s compressing backend"

second, there is not much value in exposing zcomp internals,
especially when the result is just another line in dmesg output.

-ss