linux-kernel - Re: [mm][RFC][PATCH 0/11] mm accessor updates.

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Message-Id: <20091216193315.14a508d5.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Wed, 16 Dec 2009 19:33:15 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Minchan Kim <minchan.kim@...il.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>, cl@...ux-foundation.org,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"mingo@...e.hu" <mingo@...e.hu>
Subject: Re: [mm][RFC][PATCH 0/11] mm accessor updates.

On Wed, 16 Dec 2009 19:31:40 +0900
Minchan Kim <minchan.kim@...il.com> wrote:

> On Wed, Dec 16, 2009 at 7:28 PM, Andi Kleen <andi@...stfloor.org> wrote:
> >> > Also the patches didn't fare too well in testing unfortunately.
> >> >
> >> > I suspect we'll rather need multiple locks split per address
> >> > space range.
> >>
> >> This set doesn't include any changes of the logic. Just replace all mmap_sem.
> >> I think this is good start point (for introducing another logic etc..)
> >
> > The problem is that for range locking simple wrapping the locks
> > in macros is not enough. You need more changes.
> 
> I agree.
> 
> We can't justify to merge as only this patch series although this
> doesn't change
> any behavior.
> 

> After we see the further works, let us discuss this patch's value.
> 
Ok, I'll show new version of speculative page fault.


> Nitpick:
> In case of big patch series, it would be better to provide separate
> all-at-once patch
> with convenience for easy patch and testing. :)
> 
Sure, keep it in my mind.

Thanks,
-Kame

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