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Message-ID: <alpine.LFD.0.999.0710261611511.30120@woody.linux-foundation.org> Date: Fri, 26 Oct 2007 16:14:10 -0700 (PDT) From: Linus Torvalds <torvalds@...ux-foundation.org> To: Zach Brown <zach.brown@...cle.com> cc: Karl Schendel <kschendel@...allegro.com>, Benjamin LaHaise <bcrl@...ck.org>, Andrew Morton <akpm@...ux-foundation.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Nick Piggin <nickpiggin@...oo.com.au>, Leonid Ananiev <leonid.i.ananiev@...ux.intel.com>, Chris Mason <chris.mason@...cle.com> Subject: Re: [PATCH] Fix bad data from non-direct-io read after direct-io write On Fri, 26 Oct 2007, Zach Brown wrote: > > I can throw together a patch if you haven't already committed one by the > time you read this ;). I'm not touching that code except to send out possible patches for others to test and comment on. I have no test-cases, nor any real interest in it. So yeah, please send me a tested and thought-through patch. It sounded like Karl actually had a test-case to trigger this, but maybe I'm confused (and it sounds a bit unlikely, since it should be hard to trigger.. Although maybe you can trigger it by doing a direct_IO write with the *source* being an mmap() of the file you're writing to, and depending on the write itself re-populating the destination in the page cache?) Karl? Linus - 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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