[sheepdog] [PATCH 2/4] farm: add basic concurrent support

[Liu Yuan]

On 05/18/2012 10:18 PM, Christoph Hellwig wrote:

> On Fri, May 18, 2012 at 10:16:32PM +0800, Liu Yuan wrote:
>> Compared to actual disk IO, the locking overhead can be neglected. I
>> think use kernel's strcut flock is simplest method, otherwise we would
>> keep track of a huge memory for lock structures.
> 
> That's not nessecarily true with fast enough storage devices.  I'm fine
> with using lockf for now to get things going, but doing something
> smarted is something I'll put in my todo list.
> 


Okay, if there is a relative easy and efficient user land locking
mechanism out, I'd be really happy to take it, I also think lockf is
just working but not optimal.

Thanks,
Yuan