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xfs: Block writes to log device

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Ask block layer to not allow other writers to open block devices used
for xfs log and realtime devices.

Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20231101174325.10596-6-jack@suse.cz
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Jan Kara 2023-11-01 18:43:11 +01:00 committed by Christian Brauner
parent 6f86176546
commit 3584c8f48a
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
1 changed files with 3 additions and 2 deletions
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5
fs/xfs/xfs_super.c
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@ -366,8 +366,9 @@ xfs_blkdev_get(
{
int error = 0;
*handlep = bdev_open_by_path(name, BLK_OPEN_READ | BLK_OPEN_WRITE,
mp->m_super, &fs_holder_ops);
*handlep = bdev_open_by_path(name,
BLK_OPEN_READ | BLK_OPEN_WRITE | BLK_OPEN_RESTRICT_WRITES,
mp->m_super, &fs_holder_ops);
if (IS_ERR(*handlep)) {
error = PTR_ERR(*handlep);
*handlep = NULL;