Expose cifs module parameters in sysfs

/sys/module/cifs/parameters should display the three
other module load time configuration settings for cifs.ko
Signed-off-by: Germano Percossi <germano.percossi@citrix.com>
Signed-off-by: Steve French <steve.french@primarydata.com>

fs/cifs/cifsfs.c

@@ -64,15 +64,15 @@ unsigned int global_secflags = CIFSSEC_DEF;
 unsigned int sign_CIFS_PDUs = 1;
 static const struct super_operations cifs_super_ops;
 unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
-module_param(CIFSMaxBufSize, uint, 0);
+module_param(CIFSMaxBufSize, uint, 0444);
 MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header). "
 				 "Default: 16384 Range: 8192 to 130048");
 unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL;
-module_param(cifs_min_rcv, uint, 0);
+module_param(cifs_min_rcv, uint, 0444);
 MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: "
 				"1 to 64");
 unsigned int cifs_min_small = 30;
-module_param(cifs_min_small, uint, 0);
+module_param(cifs_min_small, uint, 0444);
 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;