[PATCH 6.1 21/23] xfs: use XFS_BUF_DADDR_NULL for daddrs in getfsmap code

From: "Darrick J. Wong" <[email protected]>

[ Upstream commit 6b35cc8d9239569700cc7cc737c8ed40b8b9cfdb ]

Use XFS_BUF_DADDR_NULL (instead of a magic sentinel value) to mean "this
field is null" like the rest of xfs.

Cc: [email protected]
Fixes: e89c041338ed6 ("xfs: implement the GETFSMAP ioctl")
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
Signed-off-by: Chandan Babu R <[email protected]>
Signed-off-by: Leah Rumancik <[email protected]>
Acked-by: "Darrick J. Wong" <[email protected]>
---
 fs/xfs/xfs_fsmap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/xfs/xfs_fsmap.c b/fs/xfs/xfs_fsmap.c
index 1efd18437ca4..a0668a1ef100 100644
--- a/fs/xfs/xfs_fsmap.c
+++ b/fs/xfs/xfs_fsmap.c
@@ -250,11 +250,11 @@ static inline bool
 xfs_getfsmap_rec_before_start(
 	struct xfs_getfsmap_info	*info,
 	const struct xfs_rmap_irec	*rec,
 	xfs_daddr_t			rec_daddr)
 {
-	if (info->low_daddr != -1ULL)
+	if (info->low_daddr != XFS_BUF_DADDR_NULL)
 		return rec_daddr < info->low_daddr;
 	if (info->low.rm_blockcount)
 		return xfs_rmap_compare(rec, &info->low) < 0;
 	return false;
 }
@@ -984,11 +984,11 @@ xfs_getfsmap(
 			break;
 
 		info.dev = handlers[i].dev;
 		info.last = false;
 		info.pag = NULL;
-		info.low_daddr = -1ULL;
+		info.low_daddr = XFS_BUF_DADDR_NULL;
 		info.low.rm_blockcount = 0;
 		error = handlers[i].fn(tp, dkeys, &info);
 		if (error)
 			break;
 		xfs_trans_cancel(tp);
-- 
2.50.0.rc1.591.g9c95f17f64-goog