Re: [PATCH 00/22] HWPOISON: Intro (v5)

From: Hugh Dickins
Date: Mon Jun 15 2009 - 08:52:49 EST

On Mon, 15 Jun 2009, Wu Fengguang wrote:
> On Mon, Jun 15, 2009 at 11:18:18AM +0800, Balbir Singh wrote:
> > Wu Fengguang wrote:
> > >
> > > I hope we can reach consensus in this round and then be able to post
> > > a final version for .31 inclusion.
> >
> > Isn't that too aggressive? .31 is already in the merge window.
> Yes, a bit aggressive. This is a new feature that involves complex logics.
> However it is basically a no-op when there are no memory errors,
> and when memory corruption does occur, it's better to (possibly) panic
> in this code than to panic unconditionally in the absence of this
> feature (as said by Rik).
> So IMHO it's OK for .31 as long as we agree on the user interfaces,
> ie. /proc/sys/vm/memory_failure_early_kill and the hwpoison uevent.
> It comes a long way through numerous reviews, and I believe all the
> important issues and concerns have been addressed. Nick, Rik, Hugh,
> Ingo, ... what are your opinions?

And for how long has this work been in linux-next or mmotm?

My opinion is that it's way too late for .31 - your only chance
is that Linus sometimes gets bored with playing safe, and decides
to break his rules and try something out regardless - but I'd hope
the bootmem business already sated his appetite for danger this time.

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