Re: [PATCH 09/18] fs: rework icount to be a locked variable

Christoph Hellwig
2010-10-08T08:17:26Z

On Fri, Oct 08, 2010 at 06:50:01PM +1100, Dave Chinner wrote:
> > There's no need to lock a normal 32-bit variable for readers.
>
> Ok, but will need a memory barrier instead?

Isn't spin_unlock supposed to be one? I'll need some of the locking
experts to shime in.