[alsa-devel] [PATCH 2/2] cuse: implement memory mapping
torvalds at linux-foundation.org
Fri Jan 13 19:19:50 CET 2012
On Fri, Jan 13, 2012 at 9:06 AM, Miklos Szeredi <miklos at szeredi.hu> wrote:
> From: Tejun Heo <htejun at gmail.com>
> This implements memory mapping of char devices.
I don't think this is how you want to do it.
It seems to maintain a page list of its own, and do the magic page
fault etc behavior. Which to me smells like a really bad design.
I would expect that what you actually want to do is to expose it as a
shared mmap, and depend on all the normal shmem support. Is there any
reason not to do that?
I guess you don't generally have big mappings, so an argument like
"that way you can page out pages etc" may not strike you as a very
strong argument, but I'd still prefer to at least see that approach
More information about the Alsa-devel