Unverified Commit 8121bcb0 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!1400 [openEuler-1.0-LTS] block: Try to handle busy underlying device on discard 

Merge Pull Request from: @zh-hhhhh 
 

If you run qemu-img convert -t none when iscsi back-end storage is used (mounted using multipath), an error message is displayed indicating Device or resource busy. The error message is resolved after patch is added

bugzilla: https://gitee.com/openeuler/kernel/issues/I7GDLI
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/fs/block_dev.c?h=v5.10.180id=d44c9780ed40db88626c9354868eab72159c7a7f&

     
 
Link:https://gitee.com/openeuler/kernel/pulls/1400

 

Reviewed-by: default avatarZhang Changzhong <zhangchangzhong@huawei.com>
Reviewed-by: default avatarYu Kuai <yukuai3@huawei.com>
Signed-off-by: default avatarZhang Changzhong <zhangchangzhong@huawei.com>
parents cd34d6db fc89ac5b

fs/block_dev.c

+10 −1
Original line number Diff line number Diff line
@@ -1149,12 +1149,21 @@ int truncate_bdev_range(struct block_device *bdev, fmode_t mode, 
		err = bd_prepare_to_claim(bdev, claimed_bdev,

					  truncate_bdev_range);

		if (err)

			return err;

			goto invalidate;

	}

	truncate_inode_pages_range(bdev->bd_inode->i_mapping, lstart, lend);

	if (claimed_bdev)

		bd_abort_claiming(bdev, claimed_bdev, truncate_bdev_range);

	return 0;



invalidate:

	/*

	 * Someone else has handle exclusively open. Try invalidating instead.

	 * The 'end' argument is inclusive so the rounding is safe.

	 */

	return invalidate_inode_pages2_range(bdev->bd_inode->i_mapping,

					     lstart >> PAGE_SHIFT,

					     lend >> PAGE_SHIFT);

}

EXPORT_SYMBOL(truncate_bdev_range);