Commit afde134b authored by Jan Kara's avatar Jan Kara Committed by Christian Brauner

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: default avatarJan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20231101174325.10596-7-jack@suse.czReviewed-by: default avatarJens Axboe <axboe@kernel.dk>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 3584c8f4
...@@ -5864,7 +5864,8 @@ static struct bdev_handle *ext4_get_journal_blkdev(struct super_block *sb, ...@@ -5864,7 +5864,8 @@ static struct bdev_handle *ext4_get_journal_blkdev(struct super_block *sb,
struct ext4_super_block *es; struct ext4_super_block *es;
int errno; int errno;
bdev_handle = bdev_open_by_dev(j_dev, BLK_OPEN_READ | BLK_OPEN_WRITE, bdev_handle = bdev_open_by_dev(j_dev,
BLK_OPEN_READ | BLK_OPEN_WRITE | BLK_OPEN_RESTRICT_WRITES,
sb, &fs_holder_ops); sb, &fs_holder_ops);
if (IS_ERR(bdev_handle)) { if (IS_ERR(bdev_handle)) {
ext4_msg(sb, KERN_ERR, ext4_msg(sb, KERN_ERR,
......
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