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

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Date:	Sun, 3 Jun 2012 16:53:32 -0400
From:	Dave Jones <davej@...hat.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	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 03, 2012 at 02:31:39PM -0400, Dave Jones wrote:
 > On Sun, Jun 03, 2012 at 11:23:29AM -0700, Linus Torvalds wrote:
 >  > 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?
 > 
 > I'l rerun the test with that (and Hugh's last patch) backed out, and see
 > if that makes any difference.

running just over two hours with that commit reverted with no obvious ill effects so far.

	Dave 
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