vfs: switch ->show_options() to struct dentry *

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index bb62a5882..06fa561 100644
--- a/fs/hfsplus/options.c
+++ b/fs/hfsplus/options.c
@@ -206,9 +206,9 @@
 	return 1;
 }
 
-int hfsplus_show_options(struct seq_file *seq, struct vfsmount *mnt)
+int hfsplus_show_options(struct seq_file *seq, struct dentry *root)
 {
-	struct hfsplus_sb_info *sbi = HFSPLUS_SB(mnt->mnt_sb);
+	struct hfsplus_sb_info *sbi = HFSPLUS_SB(root->d_sb);
 
 	if (sbi->creator != HFSPLUS_DEF_CR_TYPE)
 		seq_printf(seq, ",creator=%.4s", (char *)&sbi->creator);