|| ||Hugh Dickins <hughd-AT-google.com> |
|| ||Linus Torvalds <torvalds-AT-linux-foundation.org> |
|| ||Re: WARNING: at mm/page-writeback.c:1990
|| ||Sun, 3 Jun 2012 18:18:39 -0700 (PDT)|
|| ||Dave Jones <davej-AT-redhat.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie-AT-samsung.com>,
Kyungmin Park <kyungmin.park-AT-samsung.com>,
Marek Szyprowski <m.szyprowski-AT-samsung.com>, Mel Gorman <mgorman-AT-suse.de>,
Minchan Kim <minchan-AT-kernel.org>, Rik van Riel <riel-AT-redhat.com>,
Andrew Morton <akpm-AT-linux-foundation.org>, Cong Wang <amwang-AT-redhat.com>,
Markus Trippelsdorf <markus-AT-trippelsdorf.de>, linux-kernel-AT-vger.kernel.org,
|| ||Article, Thread
On Sun, 3 Jun 2012, Linus Torvalds wrote:
> On Sun, Jun 3, 2012 at 3:17 PM, Hugh Dickins <firstname.lastname@example.org> wrote:
> > But another strike against that commit: I tried fixing it up to use
> > start_page instead of page at the end, with the worrying but safer
> > locking I suggested at first, with a count of how many times it went
> > there, and how many times it succeeded.
> You can't use start_page anyway, it might not be a valid page. There's
> a reson it does that "pfn_valid_within()", methinks.
You wouldn't want me to say that I think you're right,
it would impudently suggest that I might conceive of you being wrong.
I sigh for your heavy burden.
> Anyway, my current plan is to apply your "mm: fix warning in
> __set_page_dirty_nobuffers" patch - even if it's just a harmless
> WARN_ON_ONCE(), and revert 5ceb9ce6fe94. Sounds like Dave hit normally
> hit his problem much before two hours, and it must be even longer now.
> Ack on that plan?
Sure, ack from me on that plan.
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