review 2, was Re: projected date for mount.cifs to support DFS junction points

[Christoph Hellwig <hch@infradead.org>]

+struct dfs_info3_param {
+	int flags; /* DFSREF_REFERRAL_SERVER, DFSREF_STORAGE_SERVER*/
+	int PathConsumed;
+	int server_type;
+	int ref_flag;
+	char *path_name;
+	char *node_name;
+};

Please avoid mixed case struct member names.

+
+static inline void init_dfs_info_param(struct dfs_info3_param *param)
+{
+	memset(param, 0, sizeof(struct dfs_info3_param));
+}

And open-coded memset at the caller would be more readable..

+
+static inline void free_dfs_info_param(struct dfs_info3_param *param)
+{
+	if (param) {
+		kfree(param->path_name);
+		kfree(param->node_name);
+		kfree(param);
+	}
+}

This one is completely unused.

--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -3879,8 +3879,8 @@ GetInodeNumOut:
 int
 CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
 		const unsigned char *searchName,
-		unsigned char **targetUNCs,
-		unsigned int *number_of_UNC_in_array,
+		struct dfs_info3_param **targetNode,
+		unsigned int *number_of_Nodes_in_array,
 		const struct nls_table *nls_codepage, int remap)

This function already was huge before the patch and grows even more.
Please consider refactoring it into small, readable helpers.


+	cFYI(1,
+			("Decoding GetDFSRefer response BCC: %d  Offset %d",
+			 pSMBr->ByteCount, data_offset));

Very strange formatting..

+/* BB: Probably we do not need this function any more.
+ * Anyway it never worked. May be one day we well need it.
+ */
 int
 connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
 		    const char *old_path, const struct nls_table *nls_codepage,
 		    int remap)
 {
+	/*

Please just remove such dead code entirely.  If people want to resurrect
it for some reason they still have the git archives.