drbd: move global variables to drbd namespace and make some static

This is a follow-up to Gregs complaints that drbd clutteres the global
namespace.
Some of DRBD's module parameters are only used within one compilation
unit. Make these static.

Signed-off-by: Roland Kammerer <roland.kammerer@linbit.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 31 insertions, 31 deletions

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index bdd9ab286a48..56a5436d3f4f 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -77,40 +77,40 @@ MODULE_PARM_DESC(minor_count, "Approximate number of drbd devices ("
 MODULE_ALIAS_BLOCKDEV_MAJOR(DRBD_MAJOR);
 
 #include <linux/moduleparam.h>
-/* allow_open_on_secondary */
-MODULE_PARM_DESC(allow_oos, "DONT USE!");
 /* thanks to these macros, if compiled into the kernel (not-module),
- * this becomes the boot parameter drbd.minor_count */
-module_param(minor_count, uint, 0444);
-module_param(disable_sendpage, bool, 0644);
-module_param(allow_oos, bool, 0);
-module_param(proc_details, int, 0644);
+ * these become boot parameters (e.g., drbd.minor_count) */
 
 #ifdef CONFIG_DRBD_FAULT_INJECTION
-int enable_faults;
-int fault_rate;
-static int fault_count;
-int fault_devs;
+int drbd_enable_faults;
+int drbd_fault_rate;
+static int drbd_fault_count;
+static int drbd_fault_devs;
 /* bitmap of enabled faults */
-module_param(enable_faults, int, 0664);
+module_param_named(enable_faults, drbd_enable_faults, int, 0664);
 /* fault rate % value - applies to all enabled faults */
-module_param(fault_rate, int, 0664);
+module_param_named(fault_rate, drbd_fault_rate, int, 0664);
 /* count of faults inserted */
-module_param(fault_count, int, 0664);
+module_param_named(fault_count, drbd_fault_count, int, 0664);
 /* bitmap of devices to insert faults on */
-module_param(fault_devs, int, 0644);
+module_param_named(fault_devs, drbd_fault_devs, int, 0644);
 #endif
 
-/* module parameter, defined */
-unsigned int minor_count = DRBD_MINOR_COUNT_DEF;
-bool disable_sendpage;
-bool allow_oos;
-int proc_details;       /* Detail level in proc drbd*/
-
+/* module parameters we can keep static */
+static bool drbd_allow_oos; /* allow_open_on_secondary */
+static bool drbd_disable_sendpage;
+MODULE_PARM_DESC(allow_oos, "DONT USE!");
+module_param_named(allow_oos, drbd_allow_oos, bool, 0);
+module_param_named(disable_sendpage, drbd_disable_sendpage, bool, 0644);
+
+/* module parameters we share */
+int drbd_proc_details; /* Detail level in proc drbd*/
+module_param_named(proc_details, drbd_proc_details, int, 0644);
+/* module parameters shared with defaults */
+unsigned int drbd_minor_count = DRBD_MINOR_COUNT_DEF;
 /* Module parameter for setting the user mode helper program
  * to run. Default is /sbin/drbdadm */
 char drbd_usermode_helper[80] = "/sbin/drbdadm";
-
+module_param_named(minor_count, drbd_minor_count, uint, 0444);
 module_param_string(usermode_helper, drbd_usermode_helper, sizeof(drbd_usermode_helper), 0644);
 
 /* in 2.6.x, our device mapping and config info contains our virtual gendisks
@@ -1562,7 +1562,7 @@ static int _drbd_send_page(struct drbd_peer_device *peer_device, struct page *pa
 	 * put_page(); and would cause either a VM_BUG directly, or
 	 * __page_cache_release a page that would actually still be referenced
 	 * by someone, leading to some obscure delayed Oops somewhere else. */
-	if (disable_sendpage || (page_count(page) < 1) || PageSlab(page))
+	if (drbd_disable_sendpage || (page_count(page) < 1) || PageSlab(page))
 		return _drbd_no_send_page(peer_device, page, offset, size, msg_flags);
 
 	msg_flags |= MSG_NOSIGNAL;
@@ -1934,7 +1934,7 @@ static int drbd_open(struct block_device *bdev, fmode_t mode)
 	if (device->state.role != R_PRIMARY) {
 		if (mode & FMODE_WRITE)
 			rv = -EROFS;
-		else if (!allow_oos)
+		else if (!drbd_allow_oos)
 			rv = -EMEDIUMTYPE;
 	}
 
@@ -2142,7 +2142,7 @@ static void drbd_destroy_mempools(void)
 static int drbd_create_mempools(void)
 {
 	struct page *page;
-	const int number = (DRBD_MAX_BIO_SIZE/PAGE_SIZE) * minor_count;
+	const int number = (DRBD_MAX_BIO_SIZE/PAGE_SIZE) * drbd_minor_count;
 	int i;
 
 	/* prepare our caches and mempools */
@@ -2984,8 +2984,8 @@ static int __init drbd_init(void)
 {
 	int err;
 
-	if (minor_count < DRBD_MINOR_COUNT_MIN || minor_count > DRBD_MINOR_COUNT_MAX) {
-		pr_err("invalid minor_count (%d)\n", minor_count);
+	if (drbd_minor_count < DRBD_MINOR_COUNT_MIN || drbd_minor_count > DRBD_MINOR_COUNT_MAX) {
+		pr_err("invalid minor_count (%d)\n", drbd_minor_count);
 #ifdef MODULE
 		return -EINVAL;
 #else
@@ -3912,12 +3912,12 @@ _drbd_insert_fault(struct drbd_device *device, unsigned int type)
 	static struct fault_random_state rrs = {0, 0};
 
 	unsigned int ret = (
-		(fault_devs == 0 ||
-			((1 << device_to_minor(device)) & fault_devs) != 0) &&
-		(((_drbd_fault_random(&rrs) % 100) + 1) <= fault_rate));
+		(drbd_fault_devs == 0 ||
+			((1 << device_to_minor(device)) & drbd_fault_devs) != 0) &&
+		(((_drbd_fault_random(&rrs) % 100) + 1) <= drbd_fault_rate));
 
 	if (ret) {
-		fault_count++;
+		drbd_fault_count++;
 
 		if (__ratelimit(&drbd_ratelimit_state))
 			drbd_warn(device, "***Simulating %s failure\n",