[PATCH v4 09/17] xfs: mount-api - refactor xfs_fs_fill_super()

[Ian Kent <raven@xxxxxxxxxx>]

Much of the code in xfs_fs_fill_super() will be used by the fill super
function of the new mount-api.

So refactor the common code into a helper in an attempt to show what's
actually changed.

Signed-off-by: Ian Kent <raven@xxxxxxxxxx>
Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>
---
 fs/xfs/xfs_super.c |   64 +++++++++++++++++++++++++++++++++-------------------
 1 file changed, 41 insertions(+), 23 deletions(-)

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 7008355df065..cc2da9093e34 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1712,27 +1712,14 @@ xfs_mount_alloc(
 
 
 STATIC int
-xfs_fs_fill_super(
-	struct super_block	*sb,
-	void			*data,
+__xfs_fs_fill_super(
+	struct xfs_mount	*mp,
 	int			silent)
 {
+	struct super_block	*sb = mp->m_super;
 	struct inode		*root;
-	struct xfs_mount	*mp = NULL;
-	int			flags = 0, error = -ENOMEM;
-
-	/*
-	 * allocate mp and do all low-level struct initializations before we
-	 * attach it to the super
-	 */
-	mp = xfs_mount_alloc(sb);
-	if (!mp)
-		goto out;
-	sb->s_fs_info = mp;
-
-	error = xfs_parseargs(mp, (char *)data);
-	if (error)
-		goto out_free_fsname;
+	int			flags = 0;
+	int			error;
 
 	sb_min_blocksize(sb, BBSIZE);
 	sb->s_xattr = xfs_xattr_handlers;
@@ -1759,7 +1746,7 @@ xfs_fs_fill_super(
 
 	error = xfs_open_devices(mp);
 	if (error)
-		goto out_free_fsname;
+		goto out;
 
 	error = xfs_init_mount_workqueues(mp);
 	if (error)
@@ -1894,10 +1881,6 @@ xfs_fs_fill_super(
 	xfs_destroy_mount_workqueues(mp);
  out_close_devices:
 	xfs_close_devices(mp);
- out_free_fsname:
-	sb->s_fs_info = NULL;
-	xfs_free_fsname(mp);
-	kfree(mp);
  out:
 	return error;
 
@@ -1907,6 +1890,41 @@ xfs_fs_fill_super(
 	goto out_free_sb;
 }
 
+STATIC int
+xfs_fs_fill_super(
+	struct super_block	*sb,
+	void			*data,
+	int			silent)
+{
+	struct xfs_mount	*mp;
+	int			error;
+
+	/*
+	 * allocate mp and do all low-level struct initializations before we
+	 * attach it to the super
+	 */
+	mp = xfs_mount_alloc(sb);
+	if (!mp)
+		return -ENOMEM;
+	sb->s_fs_info = mp;
+
+	error = xfs_parseargs(mp, (char *)data);
+	if (error)
+		goto out_free_fsname;
+
+	error = __xfs_fs_fill_super(mp, silent);
+	if (error)
+		goto out_free_fsname;
+
+	return 0;
+
+ out_free_fsname:
+	sb->s_fs_info = NULL;
+	xfs_free_fsname(mp);
+	kfree(mp);
+	return error;
+}
+
 STATIC void
 xfs_fs_put_super(
 	struct super_block	*sb)