Re: 2.5.69-mm1

David S. Miller (davem@redhat.com)
06 May 2003 05:02:22 -0700

On Tue, 2003-05-06 at 04:09, Dipankar Sarma wrote:
> That brings me to the point - with the fget-speedup patch, we should
> probably change ->file_lock back to an rwlock again. We now take this
> lock only when fd table is shared and under such situation the rwlock
> should help. Andrew, it that ok ?

rwlocks believe it or not tend not to be superior over spinlocks,
they actually promote cache line thrashing in the case they
are actually being effective (>1 parallel reader)

-- 
David S. Miller <davem@redhat.com>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/