diff mbox series

[6.1,CANDIDATE,12/26] xfs: defered work could create precommits

Message ID 20240905182144.2691920-13-leah.rumancik@gmail.com (mailing list archive)
State Not Applicable, archived
Headers show
Series xfs backports to catch 6.1.y up to 6.6 | expand

Commit Message

Leah Rumancik Sept. 5, 2024, 6:21 p.m. UTC 
From: Dave Chinner <dchinner@redhat.com>

[ Upstream commit cb042117488dbf0b3b38b05771639890fada9a52 ]

To fix a AGI-AGF-inode cluster buffer deadlock, we need to move
inode cluster buffer operations to the ->iop_precommit() method.
However, this means that deferred operations can require precommits
to be run on the final transaction that the deferred ops pass back
to xfs_trans_commit() context. This will be exposed by attribute
handling, in that the last changes to the inode in the attr set
state machine "disappear" because the precommit operation is not run.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
---
 fs/xfs/xfs_trans.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index 7bd16fbff534..a772f60de4a2 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -970,6 +970,11 @@  __xfs_trans_commit(
 		error = xfs_defer_finish_noroll(&tp);
 		if (error)
 			goto out_unreserve;
+
+		/* Run precommits from final tx in defer chain. */
+		error = xfs_trans_run_precommits(tp);
+		if (error)
+			goto out_unreserve;
 	}
 
 	/*