diff --git a/fs/dcache.c b/fs/dcache.c
index 525770e576db0db8085f5c3c2220095008cb2629..c2add37082b64936cb1239c187eb8a74cd352177 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -503,7 +503,12 @@ void __d_drop(struct dentry *dentry)
 {
 	if (!d_unhashed(dentry)) {
 		struct hlist_bl_head *b;
-		if (unlikely(dentry->d_flags & DCACHE_DISCONNECTED))
+		/*
+		 * Hashed dentries are normally on the dentry hashtable,
+		 * with the exception of those newly allocated by
+		 * d_obtain_alias, which are always IS_ROOT:
+		 */
+		if (unlikely(IS_ROOT(dentry)))
 			b = &dentry->d_sb->s_anon;
 		else
 			b = d_hash(dentry->d_parent, dentry->d_name.hash);