linux-kernel - [PATCH 3.13.y-ckt 041/143] xfs: inode unlink does not set AGI buffer type

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Date:	Tue, 31 Mar 2015 12:46:46 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Dave Chinner <dchinner@...hat.com>,
	Dave Chinner <david@...morbit.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13.y-ckt 041/143] xfs: inode unlink does not set AGI buffer type

3.13.11-ckt18 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dave Chinner <dchinner@...hat.com>

commit f19b872b086711bb4b22c3a0f52f16aa920bcc61 upstream.

This leads to log recovery throwing errors like:

XFS (md0): Mounting V5 Filesystem
XFS (md0): Starting recovery (logdev: internal)
XFS (md0): Unknown buffer type 0!
XFS (md0): _xfs_buf_ioapply: no ops on block 0xaea8802/0x1
ffff8800ffc53800: 58 41 47 49 .....

Which is the AGI buffer magic number.

Ensure that we set the type appropriately in both unlink list
addition and removal.

Tested-by: Jan Kara <jack@...e.cz>
Signed-off-by: Dave Chinner <dchinner@...hat.com>
Reviewed-by: Brian Foster <bfoster@...hat.com>
Signed-off-by: Dave Chinner <david@...morbit.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 fs/xfs/xfs_inode.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 001aa89..16bb5d0 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1950,6 +1950,7 @@ xfs_iunlink(
 	agi->agi_unlinked[bucket_index] = cpu_to_be32(agino);
 	offset = offsetof(xfs_agi_t, agi_unlinked) +
 		(sizeof(xfs_agino_t) * bucket_index);
+	xfs_trans_buf_set_type(tp, agibp, XFS_BLFT_AGI_BUF);
 	xfs_trans_log_buf(tp, agibp, offset,
 			  (offset + sizeof(xfs_agino_t) - 1));
 	return 0;
@@ -2041,6 +2042,7 @@ xfs_iunlink_remove(
 		agi->agi_unlinked[bucket_index] = cpu_to_be32(next_agino);
 		offset = offsetof(xfs_agi_t, agi_unlinked) +
 			(sizeof(xfs_agino_t) * bucket_index);
+		xfs_trans_buf_set_type(tp, agibp, XFS_BLFT_AGI_BUF);
 		xfs_trans_log_buf(tp, agibp, offset,
 				  (offset + sizeof(xfs_agino_t) - 1));
 	} else {
-- 
1.9.1

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