xfs: pack icreate initialization parameters into a separate structure

Callers that want to create an inode currently pass all possible file
attribute values for the new inode into xfs_init_new_inode as ten
separate parameters.  This causes two code maintenance issues: first, we
have large multi-line call sites which programmers must read carefully
to make sure they did not accidentally invert a value.  Second, all
three file id parameters must be passed separately to the quota
functions; any discrepancy results in quota count errors.

Clean this up by creating a new icreate_args structure to hold all this
information, some helpers to initialize them properly, and make the
callers pass this structure through to the creation function, whose name
we shorten to xfs_icreate.  This eliminates the issues, enables us to
keep the inode init code in sync with userspace via libxfs, and is
needed for future metadata directory tree management.

(A subsequent cleanup will also fix the quota alloc calls.)

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

1 files changed, 9 insertions, 3 deletions

diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
index 53ed512c6f21..3b797a39950d 100644
--- a/fs/xfs/xfs_symlink.c
+++ b/fs/xfs/xfs_symlink.c
@@ -90,6 +90,11 @@ xfs_symlink(
 	struct xfs_inode	**ipp)
 {
 	struct xfs_mount	*mp = dp->i_mount;
+	struct xfs_icreate_args	args = {
+		.idmap		= idmap,
+		.pip		= dp,
+		.mode		= S_IFLNK | (mode & ~S_IFMT),
+	};
 	struct xfs_trans	*tp = NULL;
 	struct xfs_inode	*ip = NULL;
 	int			error = 0;
@@ -111,6 +116,9 @@ xfs_symlink(
 	if (xfs_is_shutdown(mp))
 		return -EIO;
 
+	if (xfs_has_parent(mp))
+		args.flags |= XFS_ICREATE_INIT_XATTRS;
+
 	/*
 	 * Check component lengths of the target path name.
 	 */
@@ -170,9 +178,7 @@ xfs_symlink(
 	 */
 	error = xfs_dialloc(&tp, dp->i_ino, S_IFLNK, &ino);
 	if (!error)
-		error = xfs_init_new_inode(idmap, tp, dp, ino,
-				S_IFLNK | (mode & ~S_IFMT), 1, 0, prid,
-				xfs_has_parent(mp), &ip);
+		error = xfs_icreate(tp, ino, &args, &ip);
 	if (error)
 		goto out_trans_cancel;