xfs: hoist project id get/set functions to libxfs

Move the project id get and set functions into libxfs.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/fs/xfs/libxfs/xfs_inode_util.c b/fs/xfs/libxfs/xfs_inode_util.c
index ed5e1a9b4b8c..3b5397a3f34f 100644
--- a/fs/xfs/libxfs/xfs_inode_util.c
+++ b/fs/xfs/libxfs/xfs_inode_util.c
@@ -122,3 +122,13 @@ xfs_ip2xflags(
 		flags |= FS_XFLAG_HASATTR;
 	return flags;
 }
+
+prid_t
+xfs_get_initial_prid(struct xfs_inode *dp)
+{
+	if (dp->i_diflags & XFS_DIFLAG_PROJINHERIT)
+		return dp->i_projid;
+
+	/* Assign to the root project by default. */
+	return 0;
+}