+/* Put references of @ses and @ses->dfs_root_ses */
+static inline void cifs_put_smb_ses(struct cifs_ses *ses)
+{
+ struct cifs_ses *rses = ses->dfs_root_ses;
+
+ __cifs_put_smb_ses(ses);
+ if (rses)
+ __cifs_put_smb_ses(rses);
+}
+
+/* Get an active reference of @ses and @ses->dfs_root_ses.
+ *
+ * NOTE: make sure to call this function when incrementing reference count of
+ * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses)
+ * will also get its reference count incremented.
+ *
+ * cifs_put_smb_ses() will put both references, so call it when you're done.
+ */
+static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses)
+{
+ lockdep_assert_held(&cifs_tcp_ses_lock);
+
+ ses->ses_count++;
+ if (ses->dfs_root_ses)
+ ses->dfs_root_ses->ses_count++;
+}
+
+static inline bool dfs_src_pathname_equal(const char *s1, const char *s2)
+{
+ if (strlen(s1) != strlen(s2))
+ return false;
+ for (; *s1; s1++, s2++) {
+ if (*s1 == '/' || *s1 == '\\') {
+ if (*s2 != '/' && *s2 != '\\')
+ return false;
+ } else if (tolower(*s1) != tolower(*s2))
+ return false;
+ }
+ return true;
+}
+