[systemd-devel] [PATCH] swap: introduce Discard property

[Jan Synacek]

Lennart Poettering <lennart at poettering.net> writes:

> On Mon, 20.10.14 11:08, Karel Zak (kzak at redhat.com) wrote:
>
>> On Fri, Oct 03, 2014 at 07:16:55AM +0200, Jan Synacek wrote:
>> > Karel Zak <kzak at redhat.com> writes:
>> > >> Karel, any chance you can add a "-o" option to swapon?
>> > >
>> > >  No problem, added to TODO. I'll implement it next week.
>> 
>> Implemented, it's in util-linux git tree, will be in v2.26.
>> 
>> > Would you please let me know when that patch makes it to the package in
>> > rawhide? I would then fix the code I wrote to support it. Thank you.
>> 
>> Probably in December.
>
> Jan, any chance you could rework the current systemd code to simply
> hackishly accept Options=discard instead of Discard=yes for the
> discard code? Then, later on, when swapon learns "-o" we can pass the
> string 1:1 over. For now we'd just check if Options= is set to the
> precise string discard, and generate an error for anything else. That
> way we could make the discard functionality available now, but keep
> compatibility with the future mkswap?

Yeah, I'll look into it.

-- 
Jan Synacek
Software Engineer, Red Hat
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