linux-kernel - Re: [PATCH] remove duplicating priority setting in try_to_free

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Date:	Mon, 28 Jan 2008 21:38:57 +0900
From:	"minchan kim" <minchan.kim@...il.com>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	"Martin Bligh" <mbligh@...igh.org>,
	"Nick Piggin" <nickpiggin@...oo.com.au>
Subject: Re: [PATCH] remove duplicating priority setting in try_to_free_p

I agree with you.
If you will have a test result, Let me know it.

On Jan 28, 2008 6:01 PM, Andrew Morton <akpm@...ux-foundation.org> wrote:
> On Mon, 28 Jan 2008 15:43:56 +0900 "minchan kim" <minchan.kim@...il.com> wrote:
>
> > > I think this is actually a bugfix.  The code you're removing doesn't do the
> > >
> > >         if (priority < zone->prev_priority)
> > >
> > > thing.
> > >
> >
> > shrink_zones() in try_to_free_pages() already called
> > note_zone_scanning_priority().
> > So, it have done it.
>
> note_zone_scanning_priority() will only permit ->prev_priority to logically
> increase, whereas the code which you've removed will also permit
> ->prev_priority to logically decrease.  So I don't see that they are
> equivalent?
>
>



-- 
Kinds regards,
barrios
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