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ext4: wire up the ->mark_dead holder operation for log devices

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

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Link: https://lore.kernel.org/r/20230601094459.1350643-17-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-06-01 11:44:59 +02:00 committed by Jens Axboe
parent f5db130d44
commit dd2e31afba
1 changed files with 10 additions and 1 deletions
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11
fs/ext4/super.c
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@ -1096,6 +1096,15 @@ void ext4_update_dynamic_rev(struct super_block *sb)
*/
}
static void ext4_bdev_mark_dead(struct block_device *bdev)
{
ext4_force_shutdown(bdev->bd_holder, EXT4_GOING_FLAGS_NOLOGFLUSH);
}
static const struct blk_holder_ops ext4_holder_ops = {
.mark_dead = ext4_bdev_mark_dead,
};
/*
* Open the external journal device
*/
@ -1104,7 +1113,7 @@ static struct block_device *ext4_blkdev_get(dev_t dev, struct super_block *sb)
struct block_device *bdev;
bdev = blkdev_get_by_dev(dev, FMODE_READ|FMODE_WRITE|FMODE_EXCL, sb,
NULL);
&ext4_holder_ops);
if (IS_ERR(bdev))
goto fail;
return bdev;