zram: kill unused zram_get_num_devices()

Now there's no caller of zram_get_num_devices(), so kill it.
And change zram_devices to static because it's only used in zram_drv.c.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c
index 9f097ce..c138a89 100644 (file)
--- a/drivers/staging/zram/zram_drv.c
+++ b/drivers/staging/zram/zram_drv.c
@@ -37,7 +37,7 @@
 
 /* Globals */
 static int zram_major;
-struct zram *zram_devices;
+static struct zram *zram_devices;
 
 /* Module params (documentation at end) */
 static unsigned int num_devices = 1;
@@ -679,11 +679,6 @@ static void destroy_device(struct zram *zram)
                blk_cleanup_queue(zram->queue);
 }
 
-unsigned int zram_get_num_devices(void)
-{
-       return num_devices;
-}
-
 static int __init zram_init(void)
 {
        int ret, dev_id;

diff --git a/drivers/staging/zram/zram_drv.h b/drivers/staging/zram/zram_drv.h
index d542eee..b3a315d 100644 (file)
--- a/drivers/staging/zram/zram_drv.h
+++ b/drivers/staging/zram/zram_drv.h
@@ -110,8 +110,6 @@ struct zram {
        struct zram_stats stats;
 };
 
-extern struct zram *zram_devices;
-unsigned int zram_get_num_devices(void);
 #ifdef CONFIG_SYSFS
 extern struct attribute_group zram_disk_attr_group;
 #endif