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Commit 4919d42a authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

xfs: only cancel cow blocks when truncating the data fork 



In xfs_itruncate_extents, only cancel cow blocks and clear the reflink
flag if we were asked to truncate the data fork.  Attr fork blocks
cannot be shared, so this makes no sense.

Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
parent a1f69417

fs/xfs/xfs_inode.c

+8 −6
Original line number Diff line number Diff line
@@ -1602,13 +1602,15 @@ xfs_itruncate_extents( 
			goto out;

	}



	if (whichfork == XFS_DATA_FORK) {

		/* Remove all pending CoW reservations. */

	error = xfs_reflink_cancel_cow_blocks(ip, &tp, first_unmap_block,

			last_block, true);

		error = xfs_reflink_cancel_cow_blocks(ip, &tp,

				first_unmap_block, last_block, true);

		if (error)

			goto out;



		xfs_itruncate_clear_reflink_flags(ip);

	}



	/*

	 * Always re-log the inode so that our permanent transaction can keep