xfs: remove the unused shared argument to xfs_reflink_reserve_cow

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 9b572a1..bdba6b9 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -569,10 +569,8 @@ xfs_file_iomap_begin_delay(
 		if (xfs_is_reflink_inode(ip) &&
 		    ((flags & IOMAP_WRITE) ||
 		     got.br_state != XFS_EXT_UNWRITTEN)) {
-			bool		shared;
-
 			xfs_trim_extent(&got, offset_fsb, end_fsb - offset_fsb);
-			error = xfs_reflink_reserve_cow(ip, &got, &shared);
+			error = xfs_reflink_reserve_cow(ip, &got);
 			if (error)
 				goto out_unlock;
 		}
@@ -1097,7 +1095,7 @@ xfs_file_iomap_begin(
 			if (error)
 				goto out_unlock;
 		} else {
-			error = xfs_reflink_reserve_cow(ip, &imap, &shared);
+			error = xfs_reflink_reserve_cow(ip, &imap);
 			if (error)
 				goto out_unlock;
 		}