[PATCH 9/9] xfs: wire up the ->mark_dead holder operation for log and RT devices

Christoph Hellwig
2023-05-05T17:53:31Z

Implement a set of holder_ops that shut down the file system when the
block device used as log or RT device is removed undeneath the file
system.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/xfs_super.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 3abe5ae96cc59b..9c2401d9548d83 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -377,6 +377,17 @@ xfs_setup_dax_always(
return 0;
}

+static void
+xfs_hop_mark_dead(
+ struct block_device *bdev)
+{
+ xfs_force_shutdown(bdev->bd_holder, SHUTDOWN_DEVICE_REMOVED);
+}
+
+static const struct blk_holder_ops xfs_holder_ops = {
+ .mark_dead = xfs_hop_mark_dead,
+};
+
STATIC int
xfs_blkdev_get(
xfs_mount_t *mp,
@@ -386,7 +397,7 @@ xfs_blkdev_get(
int error = 0;

*bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL,
- mp, NULL);
+ mp, &xfs_holder_ops);
if (IS_ERR(*bdevp)) {
error = PTR_ERR(*bdevp);
xfs_warn(mp, "Invalid device [%s], error=%d", name, error);
--
2.39.2