make simple_positive() public

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c
index d92bdf3..6e8a140 100644
--- a/fs/tracefs/inode.c
+++ b/fs/tracefs/inode.c
@@ -496,16 +496,11 @@
 	return dentry;
 }
 
-static inline int tracefs_positive(struct dentry *dentry)
-{
-	return dentry->d_inode && !d_unhashed(dentry);
-}
-
 static int __tracefs_remove(struct dentry *dentry, struct dentry *parent)
 {
 	int ret = 0;
 
-	if (tracefs_positive(dentry)) {
+	if (simple_positive(dentry)) {
 		if (dentry->d_inode) {
 			dget(dentry);
 			switch (dentry->d_inode->i_mode & S_IFMT) {
@@ -582,7 +577,7 @@
 	 */
 	spin_lock(&parent->d_lock);
 	list_for_each_entry(child, &parent->d_subdirs, d_child) {
-		if (!tracefs_positive(child))
+		if (!simple_positive(child))
 			continue;
 
 		/* perhaps simple_empty(child) makes more sense */
@@ -603,7 +598,7 @@
 		 * from d_subdirs. When releasing the parent->d_lock we can
 		 * no longer trust that the next pointer is valid.
 		 * Restart the loop. We'll skip this one with the
-		 * tracefs_positive() check.
+		 * simple_positive() check.
 		 */
 		goto loop;
 	}