From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wu Fengguang <fengguang.wu@intel.com>
Subject: [PATCH 42/45] writeback: requeue_io_wait() on blocked inode
Date: Wed, 07 Oct 2009 15:39:00 +0800
Message-ID: <20091007074906.609815859@intel.com>
References: <20091007073818.318088777@intel.com>
Cc: Theodore Tso <tytso@mit.edu>,
	Christoph Hellwig <hch@infradead.org>,
	Dave Chinner <david@fromorbit.com>,
	Chris Mason <chris.mason@oracle.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	"Li Shaohua" <shaohua.li@intel.com>,
	"Myklebust Trond" <Trond.Myklebust@netapp.com>,
	"jens.axboe@oracle.com" <jens.axboe@oracle.com>,
	Jan Kara <jack@suse.cz>, Nick Piggin <npiggin@suse.de>,
	<linux-fsdevel@vger.kernel.org>,
	Wu Fengguang <fengguang.wu@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Return-path: <linux-fsdevel-owner@vger.kernel.org>
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Content-Disposition: inline; filename=writeback-remove-redirty-blocked.patch
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Use requeue_io_wait() if inode is somehow blocked. This includes the
wrapped around range_cyclic case.

CC: Jan Kara <jack@suse.cz> 
CC: Dave Chinner <david@fromorbit.com> 
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux.orig/fs/fs-writeback.c	2009-10-07 14:32:52.000000000 +0800
+++ linux/fs/fs-writeback.c	2009-10-07 14:32:53.000000000 +0800
@@ -591,7 +591,7 @@ writeback_single_inode(struct inode *ino
 				/*
 				 * somehow blocked: retry later
 				 */
-				redirty_tail(inode);
+				requeue_io_wait(inode);
 			}
 		} else if (inode->i_state & I_DIRTY) {
 			/*