Re: Fall back io scheduler for 2.6.15?

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On 1/16/06, Jens Axboe <[email protected]> wrote:
> On Sat, Jan 14 2006, Chuck Ebbert wrote:
> > In-Reply-To: <[email protected]>
> >
> > On Fri, 13 Jan 2006, Andrew Morton wrote:
> >
> > > OK.  And I assume that AS wasn't compiled, so that's why it fell back?
> >
> > As of 2.6.15 you need to use "anticipatory" instead of "as".
> >
> > Maybe this patch would help?
> >
> > Signed-off-by: Chuck Ebbert <[email protected]>
> >
> > --- 2.6.15a.orig/block/elevator.c
> > +++ 2.6.15a/block/elevator.c
> > @@ -150,6 +150,13 @@ static void elevator_setup_default(void)
> >       if (!chosen_elevator[0])
> >               strcpy(chosen_elevator, CONFIG_DEFAULT_IOSCHED);
> >
> > +     /*
> > +      * Be backwards-compatible with previous kernels, so users
> > +      * won't get the wrong elevator.
> > +      */
> > +     if (!strcmp(chosen_elevator, "as"))
> > +             strcpy(chosen_elevator, "anticipatory");
> > +
> >       /*
> >        * If the given scheduler is not available, fall back to no-op.
> >        */
>
> We probably should apply this, since it used to be 'as'.

i agree

NATE
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