On Thu, 2010-05-27 at 07:50 +0100, Al Viro wrote:
> On Tue, May 25, 2010 at 04:49:12PM +0300, Artem Bityutskiy wrote:
> > From: Artem Bityutskiy <Artem.Bityutskiy@xxxxxxxxx>
> > +void mark_sb_dirty(struct super_block *sb)
> > +{
> > + sb->s_dirty = 1;
> > +
> > + spin_lock(&supers_timer_lock);
> > + if (!supers_timer_armed) {
> > + bdi_arm_supers_timer();
> > + supers_timer_armed = 1;
> > + } else if (supers_timer_armed == -1)
> > + supers_timer_armed = 1;
> > + spin_unlock(&supers_timer_lock);
> > +}
> > +EXPORT_SYMBOL(mark_sb_dirty);
>
> Ouch... That turns a previously trivial operation into something
> much heavier; moreover, I'd rather see serious review of s_dirt
> uses.
OK, I'll try to do something lighter with atomic variables or something
like Nick posted - need to think about this. And I'll try to review
s_dirty usage as much as my time and knowledge allow. Thanks.
--
Best Regards,
Artem Bityutskiy (Артём Битюцкий)
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