diff options
| author | Jan Kara | 2023-11-01 18:43:12 +0100 |
|---|---|---|
| committer | Christian Brauner | 2023-11-18 14:59:26 +0100 |
| commit | afde134b5bd02a5c719336ca1d0d3cb7e4def70e (patch) | |
| tree | c0816e10ddd932b8ecc77a7dce91e762204e0212 /fs/ext4/super.c | |
| parent | 3584c8f48a70c1f74c7b7bab59cf22bb66224649 (diff) | |
ext4: Block writes to journal device
Ask block layer to not allow other writers to open block device used
for ext4 journal.
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20231101174325.10596-7-jack@suse.cz
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index bd752f3f1dd5..0980845c8b8f 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -5864,8 +5864,9 @@ static struct bdev_handle *ext4_get_journal_blkdev(struct super_block *sb, struct ext4_super_block *es; int errno; - bdev_handle = bdev_open_by_dev(j_dev, BLK_OPEN_READ | BLK_OPEN_WRITE, - sb, &fs_holder_ops); + bdev_handle = bdev_open_by_dev(j_dev, + BLK_OPEN_READ | BLK_OPEN_WRITE | BLK_OPEN_RESTRICT_WRITES, + sb, &fs_holder_ops); if (IS_ERR(bdev_handle)) { ext4_msg(sb, KERN_ERR, "failed to open journal device unknown-block(%u,%u) %ld", |