linux-kernel - Re: 2.6.32.3 x86_64 - XFS hangs, all I/O to D-state bug (again)

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Message-ID: <20100211145632.GA16912@infradead.org>
Date:	Thu, 11 Feb 2010 09:56:32 -0500
From:	Christoph Hellwig <hch@...radead.org>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org,
	xfs@....sgi.com, Alan Piszcz <ap@...arrain.com>
Subject: Re: 2.6.32.3 x86_64 - XFS hangs, all I/O to D-state bug (again)

On Thu, Feb 11, 2010 at 09:51:23AM -0500, Christoph Hellwig wrote:
> Can you check if this still happens with the patch below?

Or the 2.6.32 variant of it:

Index: xfs/fs/xfs/linux-2.6/xfs_buf.c
===================================================================
--- xfs.orig/fs/xfs/linux-2.6/xfs_buf.c	2010-02-11 15:52:14.442003504 +0100
+++ xfs/fs/xfs/linux-2.6/xfs_buf.c	2010-02-11 15:52:33.172024387 +0100
@@ -1182,8 +1182,7 @@ _xfs_buf_ioapply(
 		bp->b_flags &= ~_XBF_RUN_QUEUES;
 		rw = (bp->b_flags & XBF_WRITE) ? WRITE_SYNC : READ_SYNC;
 	} else {
-		rw = (bp->b_flags & XBF_WRITE) ? WRITE :
-		     (bp->b_flags & XBF_READ_AHEAD) ? READA : READ;
+		rw = (bp->b_flags & XBF_WRITE) ? WRITE : READ;
 	}
 
 	/* Special code path for reading a sub page size buffer in --
--
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