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From: Bob Liu <bob.liu@oracle.com>
To: linux-block@vger.kernel.org
Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	martin.petersen@oracle.com, shirley.ma@oracle.com,
	allison.henderson@oracle.com, david@fromorbit.com,
	darrick.wong@oracle.com, hch@infradead.org, adilger@dilger.ca
Subject: [RFC PATCH v2 8/9] xfs: Rewrite retried read
Date: Wed, 13 Feb 2019 17:50:43 +0800	[thread overview]
Message-ID: <20190213095044.29628-9-bob.liu@oracle.com> (raw)
In-Reply-To: <20190213095044.29628-1-bob.liu@oracle.com>

From: Allison Henderson <allison.henderson@oracle.com>

If we had to try more than one mirror to get a successful
read, then write that buffer back to correct the bad mirror

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
---
 fs/xfs/xfs_buf.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 2c250221cb78..e54dbc776d15 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -861,6 +861,14 @@ xfs_buf_read_map(
 
 		}
 retry_done:
+
+		/*
+		 * if we had to try more than one mirror to sucessfully read
+		 * the buffer, write the buffer back
+		 */
+		if (!bp->b_error && i > 0)
+			xfs_bwrite(bp);
+
 		return bp;
 	}
 
-- 
2.17.1


  parent reply	other threads:[~2019-02-13  9:53 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-13  9:50 [RFC PATCH v2 0/9] Block/XFS: Support alternative mirror device retry Bob Liu
2019-02-13  9:50 ` [RFC PATCH v2 1/9] block: add nr_mirrors to request_queue Bob Liu
2019-02-13 10:26   ` Andreas Dilger
2019-02-13 16:04   ` Theodore Y. Ts'o
2019-02-13 16:04     ` Theodore Y. Ts'o
2019-02-14  5:57     ` Bob Liu
2019-02-18 17:56       ` Theodore Y. Ts'o
2019-02-18 17:56         ` Theodore Y. Ts'o
2019-02-13  9:50 ` [RFC PATCH v2 2/9] block: add rd_hint to bio and request Bob Liu
2019-02-13 16:18   ` Jens Axboe
2019-02-14  6:10     ` Bob Liu
2019-02-13  9:50 ` [RFC PATCH v2 3/9] md:raid1: set mirrors correctly Bob Liu
2019-02-13  9:50 ` [RFC PATCH v2 4/9] md:raid1: rd_hint support and consider stacked layer case Bob Liu
2019-03-04 13:47   ` [LKP] [md] d95576ef1d: BUG:unable_to_handle_kernel kernel test robot
2019-03-04 13:47     ` kernel test robot
2019-02-13  9:50 ` [RFC PATCH v2 5/9] Add b_alt_retry to xfs_buf Bob Liu
2019-02-13  9:50 ` [RFC PATCH v2 6/9] xfs: Add b_rd_hint " Bob Liu
2019-02-13  9:50 ` [RFC PATCH v2 7/9] xfs: Add device retry Bob Liu
2019-02-13  9:50 ` Bob Liu [this message]
2019-02-13  9:50 ` [RFC PATCH v2 9/9] xfs: Add tracepoints and logging to alternate " Bob Liu
2019-02-18  8:08 ` [RFC PATCH v2 0/9] Block/XFS: Support alternative mirror " jianchao.wang
2019-02-19  1:29   ` jianchao.wang
2019-02-18 21:31 ` Dave Chinner
2019-02-19  2:55   ` Darrick J. Wong
2019-02-19  3:33     ` Dave Chinner
2019-02-28 14:22   ` Bob Liu
2019-02-28 21:49     ` Dave Chinner
2019-03-03  2:37       ` Bob Liu
2019-03-03 23:18         ` Dave Chinner
2019-02-28 23:28     ` Andreas Dilger
2019-03-01 14:14       ` Bob Liu
2019-03-03 23:45       ` Dave Chinner

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