Commit 38c8e3df authored by Ming Lei's avatar Ming Lei Committed by Jens Axboe
Browse files

block: sync part's ->bd_has_submit_bio with disk's 



submit_bio() always uses bio->bi_bdev->bd_has_submit_bio to decide if
disk's ->submit_bio() is called, and bio->bi_bdev could point to one
partition device.

So we have to sync part bdev's ->bd_has_submit_bio with disk's.

Reported-by: default avatarChanghui Zhong <czhong@redhat.com>
Link: https://lore.kernel.org/linux-block/ZEdItaPqif8fp85H@ovpn-8-24.pek2.redhat.com/T/#t


Fixes: 9f4107b0 ("block: store bdev->bd_disk->fops->submit_bio state in bdev")
Signed-off-by: default avatarMing Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20230425034154.110099-1-ming.lei@redhat.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 83794367

block/bdev.c

+4 −1
Original line number Diff line number Diff line
@@ -418,8 +418,11 @@ struct block_device *bdev_alloc(struct gendisk *disk, u8 partno) 
	bdev->bd_partno = partno;

	bdev->bd_inode = inode;

	bdev->bd_queue = disk->queue;

	bdev->bd_stats = alloc_percpu(struct disk_stats);

	if (partno)

		bdev->bd_has_submit_bio = disk->part0->bd_has_submit_bio;

	else

		bdev->bd_has_submit_bio = false;

	bdev->bd_stats = alloc_percpu(struct disk_stats);

	if (!bdev->bd_stats) {

		iput(inode);

		return NULL;