[PATCH v2 1/2] btrfs: use __u16 for the return value of btrfs_qgroup_level()

[Qu Wenruo <wqu@suse.com>]

Btrfs qgroup level is limited to u16, so no need to use u64 for it.

Signed-off-by: Qu Wenruo <wqu@suse.com>
---
 fs/btrfs/qgroup.c               | 2 +-
 include/uapi/linux/btrfs_tree.h | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 74eb98479109..014d32429165 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -538,7 +538,7 @@ bool btrfs_check_quota_leak(struct btrfs_fs_info *fs_info)
 			if (qgroup->rsv.values[i]) {
 				ret = true;
 				btrfs_warn(fs_info,
-		"qgroup %llu/%llu has unreleased space, type %d rsv %llu",
+		"qgroup %hu/%llu has unreleased space, type %d rsv %llu",
 				   btrfs_qgroup_level(qgroup->qgroupid),
 				   btrfs_qgroup_subvolid(qgroup->qgroupid),
 				   i, qgroup->rsv.values[i]);
diff --git a/include/uapi/linux/btrfs_tree.h b/include/uapi/linux/btrfs_tree.h
index a3f3975df0de..9ba64ca6b4ac 100644
--- a/include/uapi/linux/btrfs_tree.h
+++ b/include/uapi/linux/btrfs_tree.h
@@ -913,9 +913,9 @@ struct btrfs_free_space_info {
 #define BTRFS_FREE_SPACE_USING_BITMAPS (1ULL << 0)
 
 #define BTRFS_QGROUP_LEVEL_SHIFT		48
-static inline __u64 btrfs_qgroup_level(__u64 qgroupid)
+static inline __u16 btrfs_qgroup_level(__u64 qgroupid)
 {
-	return qgroupid >> BTRFS_QGROUP_LEVEL_SHIFT;
+	return (__u16)(qgroupid >> BTRFS_QGROUP_LEVEL_SHIFT);
 }
 
 /*
-- 
2.27.0