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SubjectRe: [PATCH] 2.6.11-mm1 "nobh" support for ext3 writeback mode
Andrew Morton <akpm@osdl.org> wrote:
>
> page reclaim can come in, grab the page lock and
> whip the page off the mapping.

No it can't - we hold an additional ref on the page, so reclaim will back
off. Still, it feels a bit flakey.

And we're not supposed to take lock_page() inside journal_start, because
that's a ranking violation. Probably i_sem will prevent an actual deadlock
occurring, however.
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