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From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: darrick.wong@oracle.com
Cc: linux-xfs@vger.kernel.org, hch@infradead.org
Subject: [PATCH 3/3] xfs: attach dquots before performing xfs_swap_extents
Date: Sun, 10 Nov 2019 17:18:34 -0800
Message-ID: <157343511427.1948946.2692071497822316839.stgit@magnolia> (raw)
In-Reply-To: <157343509505.1948946.5379830250503479422.stgit@magnolia>

From: Darrick J. Wong <darrick.wong@oracle.com>

Make sure we attach dquots to both inodes before swapping their extents.
This was found via manual code inspection by looking for places where we
could call xfs_trans_mod_dquot without dquots attached to inodes, and
confirmed by instrumenting the kernel and running xfs/328.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/xfs_bmap_util.c |    8 ++++++++
 1 file changed, 8 insertions(+)


diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 9d731b71e84f..2efd78a9719e 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1569,6 +1569,14 @@ xfs_swap_extents(
 		goto out_unlock;
 	}
 
+	error = xfs_qm_dqattach(ip);
+	if (error)
+		goto out_unlock;
+
+	error = xfs_qm_dqattach(tip);
+	if (error)
+		goto out_unlock;
+
 	error = xfs_swap_extent_flush(ip);
 	if (error)
 		goto out_unlock;


  parent reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-11  1:18 [PATCH 0/3] xfs: various fixes Darrick J. Wong
2019-11-11  1:18 ` [PATCH 1/3] xfs: actually check xfs_btree_check_block return in xfs_btree_islastblock Darrick J. Wong
2019-11-11  7:57   ` Christoph Hellwig
2019-11-11  1:18 ` [PATCH 2/3] xfs: attach dquots and reserve quota blocks during unwritten conversion Darrick J. Wong
2019-11-11  7:59   ` Christoph Hellwig
2019-11-11  1:18 ` Darrick J. Wong [this message]
2019-11-11  8:05   ` [PATCH 3/3] xfs: attach dquots before performing xfs_swap_extents Christoph Hellwig
2019-11-12 22:14     ` Dave Chinner
2019-11-14 14:53       ` Christoph Hellwig

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