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Message-ID: <20070219215048.GI6133@think.oraclecorp.com> Date: Mon, 19 Feb 2007 16:50:48 -0500 From: Chris Mason <chris.mason@...cle.com> To: "Ananiev, Leonid I" <leonid.i.ananiev@...el.com> Cc: Zach Brown <zach.brown@...cle.com>, linux-aio@...ck.org, linux-kernel@...r.kernel.org, Benjamin LaHaise <bcrl@...ck.org>, Suparna bhattacharya <suparna@...ibm.com>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: [PATCH] aio: propogate post-EIOCBQUEUED errors to completion event On Mon, Feb 19, 2007 at 11:58:16PM +0300, Ananiev, Leonid I wrote: > > while triggering EIO in invalidate_inode_pages2_range() > ... > > With this patch aio-stress sees -EIO. > > Actually if invalidate_inode_pages2_range() returns EIO it means > that internal kernel synchronization conflict was happen. > It is reported to user as hardware IO error. > Iteration in synchronization process could be performed instead. > aio is not responsible for this particular synchronization. Those fixes (if we make them) should come from other places. The patch is important to get aio error handling right. I would argue that one common cause of the EIO is userland error (mmap concurrent with O_DIRECT), and EIO is the correct answer. -chris - 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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