linux-kernel - Re: WARNING: at mm/page-writeback.c:1990 __set_page_dirty

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Date:	Sun, 3 Jun 2012 11:23:29 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Dave Jones <davej@...hat.com>, Hugh Dickins <hughd@...gle.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Mel Gorman <mgorman@...e.de>, Minchan Kim <minchan@...nel.org>,
	Rik van Riel <riel@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Cong Wang <amwang@...hat.com>,
	Markus Trippelsdorf <markus@...ppelsdorf.de>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: WARNING: at mm/page-writeback.c:1990 __set_page_dirty_nobuffers+0x13a/0x170()

On Sun, Jun 3, 2012 at 11:15 AM, Dave Jones <davej@...hat.com> wrote:
>
> Things aren't happy with that patch at all.

Yeah, at this point I think we need to just revert the compaction changes.

Guys, what's the minimal set of commits to revert? That clearly buggy
"rescue_unmovable_pageblock()" function was introduced by commit
5ceb9ce6fe94, but is that actually involved with the particular bug?
That commit seems to revert cleanly still, but is that sufficient or
does it even matter?

                  Linus
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