cifs: make minor clarifications to module params for cifs.ko

Note which ones of the module params are cifs dialect only
(N/A for default dialect now that has moved to SMB2.1 or later)

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>

fs/cifs/cifsfs.c

@@ -64,7 +64,8 @@ unsigned int sign_CIFS_PDUs = 1;
 static const struct super_operations cifs_super_ops;
 unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
 module_param(CIFSMaxBufSize, uint, 0444);
-MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header). "
+MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header) "
+				 "for CIFS requests. "
 				 "Default: 16384 Range: 8192 to 130048");
 unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL;
 module_param(cifs_min_rcv, uint, 0444);
@@ -76,7 +77,8 @@ MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 "
 				 "Range: 2 to 256");
 unsigned int cifs_max_pending = CIFS_MAX_REQ;
 module_param(cifs_max_pending, uint, 0444);
-MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server. "
+MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server for "
+				   "CIFS/SMB1 dialect (N/A for SMB3) "
 				   "Default: 32767 Range: 2 to 32767.");
 module_param(enable_oplocks, bool, 0644);
 MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks. Default: y/Y/1");

fs/cifs/cifsglob.h

@@ -632,7 +632,7 @@ struct TCP_Server_Info {
 	bool oplocks:1; /* enable oplocks */
 	unsigned int maxReq;	/* Clients should submit no more */
 	/* than maxReq distinct unanswered SMBs to the server when using  */
-	/* multiplexed reads or writes */
+	/* multiplexed reads or writes (for SMB1/CIFS only, not SMB2/SMB3) */
 	unsigned int maxBuf;	/* maxBuf specifies the maximum */
 	/* message size the server can send or receive for non-raw SMBs */
 	/* maxBuf is returned by SMB NegotiateProtocol so maxBuf is only 0 */