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authorDmitry Monakhov <dmonakhov@openvz.org>2014-08-18 12:49:08 +0400
committerJens Axboe <axboe@fb.com>2014-08-22 05:42:01 +0400
commitaeac31819475ad0980cb3a13d5599f5a1127e83d (patch)
tree4ba8ca3d8212e6396b1235e8277fe7a7cfb6ca27 /drivers/block/brd.c
parentffb5db73ebe9b5c37fd741e1684833dd674372bd (diff)
downloadlinux-aeac31819475ad0980cb3a13d5599f5a1127e83d.tar.xz
brd: add ram disk visibility option
Currenly ram disk is not visiable inside /proc/partitions. This was done for compatibility reasons here: 53978d0a7a27. 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: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block/brd.c')
-rw-r--r--drivers/block/brd.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index c7d138eca731..3598110d2cef 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -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");
@@ -501,7 +504,8 @@ static struct brd_device *brd_alloc(int i)
disk->fops = &brd_fops;
disk->private_data = brd;
disk->queue = brd->brd_queue;
- disk->flags |= GENHD_FL_SUPPRESS_PARTITION_INFO;
+ if (!part_show)
+ disk->flags |= GENHD_FL_SUPPRESS_PARTITION_INFO;
sprintf(disk->disk_name, "ram%d", i);
set_capacity(disk, rd_size * 2);