Commit 5cf32f63 authored by Shiyang Ruan's avatar Shiyang Ruan Committed by Darrick J. Wong
Browse files

xfs: fix the calculation for "end" and "length" 



The value of "end" should be "start + length - 1".

Signed-off-by: default avatarShiyang Ruan <ruansy.fnst@fujitsu.com>
Reviewed-by: default avatarDarrick J. Wong <djwong@kernel.org>
Signed-off-by: default avatarDarrick J. Wong <djwong@kernel.org>
parent 75dc0345

fs/xfs/xfs_notify_failure.c

+5 −4
Original line number Diff line number Diff line
@@ -114,7 +114,8 @@ xfs_dax_notify_ddev_failure( 
	int			error = 0;

	xfs_fsblock_t		fsbno = XFS_DADDR_TO_FSB(mp, daddr);

	xfs_agnumber_t		agno = XFS_FSB_TO_AGNO(mp, fsbno);

	xfs_fsblock_t		end_fsbno = XFS_DADDR_TO_FSB(mp, daddr + bblen);

	xfs_fsblock_t		end_fsbno = XFS_DADDR_TO_FSB(mp,

							     daddr + bblen - 1);

	xfs_agnumber_t		end_agno = XFS_FSB_TO_AGNO(mp, end_fsbno);



	error = xfs_trans_alloc_empty(mp, &tp);
@@ -210,7 +211,7 @@ xfs_dax_notify_failure( 
	ddev_end = ddev_start + bdev_nr_bytes(mp->m_ddev_targp->bt_bdev) - 1;



	/* Ignore the range out of filesystem area */

	if (offset + len < ddev_start)

	if (offset + len - 1 < ddev_start)

		return -ENXIO;

	if (offset > ddev_end)

		return -ENXIO;
@@ -222,8 +223,8 @@ xfs_dax_notify_failure( 
		len -= ddev_start - offset;

		offset = 0;

	}

	if (offset + len > ddev_end)

		len -= ddev_end - offset;

	if (offset + len - 1 > ddev_end)

		len = ddev_end - offset + 1;



	return xfs_dax_notify_ddev_failure(mp, BTOBB(offset), BTOBB(len),

			mf_flags);