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Date: Wed, 27 Dec 2006 16:52:46 -0800 (PST) From: David Miller <davem@...emloft.net> To: torvalds@...l.org Cc: ranma@...edrich.de, gordonfarquharson@...il.com, tbm@...ius.com, a.p.zijlstra@...llo.nl, andrei.popa@...eo.ro, akpm@...l.org, hugh@...itas.com, nickpiggin@...oo.com.au, arjan@...radead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] mm: fix page_mkclean_one From: Linus Torvalds <torvalds@...l.org> Date: Wed, 27 Dec 2006 16:39:43 -0800 (PST) > > > On Wed, 27 Dec 2006, Linus Torvalds wrote: > > > > I think the test-case could probably be improved by having a munmap() and > > page-cache flush in between the writing and the checking, to see whether > > that shows the corruption easier (and possibly without having to start > > paging in order to throw the pages out, which would simplify testing a > > lot). > > I think the page-writeout is implicated, because I do seem to need it, but > the page-cache flush does seem to make corruption _easier_ to see. I now > seem about to trigger it with a 100MB file on a 256MB machine in a minute > or so, with this slight modification. > > I still don't see _why_, though. But maybe smarter people than me can see > it.. FWIW this program definitely triggers the bug for me. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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