Re: [RFC PATCH v2 00/10] Add configurable block device LED triggers
From: Marek Behún
Date: Mon Aug 09 2021 - 18:43:51 EST
On Mon, 9 Aug 2021 14:54:26 -0500
Ian Pilcher <arequipeno@xxxxxxxxx> wrote:
> I'm not unalterably opposed to the idea, but I don't currently see a way
> to do that without resolving block devices (struct gendisk) by name, and
> that seems to be a no-no.
So a name like "sda1" is not viable? Why? What about "MAJOR:MINOR"?
I confess that I am not very familiar with internal blkdev API.
Quick look reveals that there is a struct block_device, containing a
member bd_disk, which is a pointer to struct gendisk.
What is the relationship between these two? Can there be a block device
without a gendisk, for example?