On Sun, 17 Aug 2014 12:45:31 -0600, Jens Axboe <ax...@fb.com> wrote:
> On 2014-08-16 09:55, Dmitry Monakhov wrote:
> > Signed-off-by: Dmitry Monakhov <dmonak...@openvz.org>
>
> You forgot a commit message justifying this change?
I've assumed that one line comment is enough :(
Please take a look at the patch with updated commit message.
>From cbb15356494fa2fb96114a152f64e962b599575c Mon Sep 17 00:00:00 2001
From: Dmitry Monakhov <dmonak...@openvz.org>
Date: Mon, 18 Aug 2014 12:45:42 +0400
Subject: [PATCH] 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 <dmonak...@openvz.org>
---
drivers/block/brd.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index c7d138e..3598110 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);
--
1.7.1
