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Commit aeac3181 authored by Dmitry Monakhov's avatar Dmitry Monakhov Committed by Jens Axboe
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brd: add ram disk visibility option 



Currenly ram disk is not visiable inside /proc/partitions. This was
done for compatibility reasons here: 53978d0a. But some utilities
expect disk presents in /proc/partitions.
Let's add module's option and let's administrator chose visibility behaviour.
By default, old behaviour preserved.

Signed-off-by: default avatarDmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent ffb5db73

drivers/block/brd.c

+5 −1
Original line number Diff line number Diff line
@@ -442,12 +442,15 @@ static int rd_nr; 
int rd_size = CONFIG_BLK_DEV_RAM_SIZE;

static int max_part;

static int part_shift;

static int part_show = 0;

module_param(rd_nr, int, S_IRUGO);

MODULE_PARM_DESC(rd_nr, "Maximum number of brd devices");

module_param(rd_size, int, S_IRUGO);

MODULE_PARM_DESC(rd_size, "Size of each RAM disk in kbytes.");

module_param(max_part, int, S_IRUGO);

MODULE_PARM_DESC(max_part, "Maximum number of partitions per RAM disk");

module_param(part_show, int, S_IRUGO);

MODULE_PARM_DESC(part_show, "Control RAM disk visibility in /proc/partitions");

MODULE_LICENSE("GPL");

MODULE_ALIAS_BLOCKDEV_MAJOR(RAMDISK_MAJOR);

MODULE_ALIAS("rd");
@@ -501,6 +504,7 @@ static struct brd_device *brd_alloc(int i) 
	disk->fops		= &brd_fops;

	disk->private_data	= brd;

	disk->queue		= brd->brd_queue;

	if (!part_show)

		disk->flags |= GENHD_FL_SUPPRESS_PARTITION_INFO;

	sprintf(disk->disk_name, "ram%d", i);

	set_capacity(disk, rd_size * 2);