[openib-general] Re: [PATCH 9 of 20] ipath - char devices for diagnostics and lightweight subnet management

[Bryan O'Sullivan]

On Thu, 2006-03-09 at 15:24 -0800, Roland Dreier wrote:

> It seems there's a window here where two processes can both pass the
> if (ipath_sma_alive) test and then proceed to step on each other.

Yep, this is a real race, albeit incredibly unlikely.  I just turned
ipath_sma_alive into an atomic_t, and wrapped the open/close code in
spinlocks.

	<b