Re: [PATCH 1/1] suspend: delete sys_sync()

From: Pavel Machek
Date: Mon Jul 06 2015 - 07:11:13 EST


Hi!

> > Moreover, question is if we really need to carry out the sync on *every*
> > suspend even if it is not pointless overall. That shouldn't really be
> > necessary if we suspend and resume often enough or if we resume only for
> > a while and then suspend again. Maybe it should be rate limited somehow
> > at least?
>
> If you suspend and resume frequently, then the cost of the sync
> shoul dbe negliable because the amount of data dirtied between
> resume/suspend shoul dbe negliable. hence my questions about where
> sync is spending too much time, and whether we've actually fixed
> those problems or not. If sync speed on clean filesystems is a
> problem then we need to fix sync, not work around it.

And yes, that's solution I'd really prefer over adding knobs to
suspend.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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