stop passing nameidata to ->lookup()

Just the flags; only NFS cares even about that, but there are
legitimate uses for such argument.  And getting rid of that
completely would require splitting ->lookup() into a couple
of methods (at least), so let's leave that alone for now...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index 3a130e2..49e4e34 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -153,7 +153,7 @@
 /* namei.c */
 
 extern int	affs_hash_name(struct super_block *sb, const u8 *name, unsigned int len);
-extern struct dentry *affs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *);
+extern struct dentry *affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int);
 extern int	affs_unlink(struct inode *dir, struct dentry *dentry);
 extern int	affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, struct nameidata *);
 extern int	affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index 4780694..7f9721b 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -211,7 +211,7 @@
 }
 
 struct dentry *
-affs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
+affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
 {
 	struct super_block *sb = dir->i_sb;
 	struct buffer_head *bh;