Re: [RFC] get_write_access()/deny_write_access() withoutinode->i_lock

[Al Viro]

On Mon, Jun 20, 2011 at 05:42:11PM +0100, Al Viro wrote:

> BTW, atomic_add_unless/atomic_inc_not_zero is done as read/cmpxchg on
> everything I've checked, including alpha and sparc.  I suspect that
> it's seriously suboptimal there...

Actually, on sparc it's probably fine.  alpha, OTOH, probably ought to switch
to something similar to what ppc is doing...
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