Re: Regression in suspend to ram in 2.6.31-rc kernels

[Pavel Machek]

On Wed 2009-09-09 22:21:56, OGAWA Hirofumi wrote:
> Pavel Machek <pavel@xxxxxx> writes:
> 
> >> It seems
> >> 
> >>     1) sync() (probabry "sync" command)
> >>     2) sync as part of suspend sequence
> >>     3) sync_filesystem() by mmc remove event
> >> 
> >> I guess the root-cause of the problem would be 3). However, it would not
> >> be easy to fix, at least, we would need to think about what we want to
> >> do for it. So, to workaround it for now, I've made this patch.
> >
> > MMC driver trying to synchronize filesystems looks like ugly layering
> > violation to me. Why are we doing that?
> 
> There is no _layering violation_ here. IIRC, mmc just tells card removed
> event to another layer (on some points of view, to tell event can be
> wrong though). The partition (block) layer does it by event.

So what is the problem? Emulating sync when card is already removed
seems little ... interesting?

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/