Re: CVS commit: src/sys

[Masao Uebayashi <uebayasi%gmail.com@localhost>]

On Tue, May 27, 2014 at 6:31 AM, Antti Kantee <pooka%iki.fi@localhost> wrote:
> On 26/05/14 19:38, David Holland wrote:
>>
>> On Sun, May 25, 2014 at 04:31:51PM +0000, Antti Kantee wrote:
>>   > Modified Files:
>>   >     src/sys/kern: subr_devsw.c vfs_bio.c
>>   >     src/sys/rump/librump/rumpkern: rump.c
>>   >
>>   > Log Message:
>>   > Call biodone() in the bdev_strategy() error via a pointer.  Decouples
>>   > subr_devsw from VFS -- not that I/O buffers are _VFS_ entities --
>>
>> Yes they are... so are devsw entries, for that matter.
>
>
> Fact: tcp/ip + bpf (accessed via devsw) works fine without VFS.  Let's keep
> it that way.  E.g. IoT folks looking at using the NetBSD TCP/IP stack in

This is really nice!

> their [high-end] devices wouldn't be too thrilled if the memory requirement
> for networking grew by 100% just because.

If an OS can run with 1/2 memory, the number of (virtual) instances
can be doubled, which is a big win in this era. :)