Commit dd2e31af authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

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



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: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Acked-by: default avatarDave Chinner <dchinner@redhat.com>
Reviewed-by: default avatarDave Chinner <dchinner@redhat.com>
Link: https://lore.kernel.org/r/20230601094459.1350643-17-hch@lst.de


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent f5db130d

fs/ext4/super.c

+10 −1
Original line number Diff line number Diff line
@@ -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;