[ofa-general] Re: [PATCH 01 of 12] Core of mmu notifiers

[Andrea Arcangeli]

On Tue, Apr 29, 2008 at 06:03:40PM +0200, Andrea Arcangeli wrote:
> Christoph if you've interest in evolving anon-vma-sem and i_mmap_sem
> yourself in this direction, you're very welcome to go ahead while I

In case you didn't notice this already, for a further explanation of
why semaphores runs slower for small critical sections and why the
conversion from spinlock to rwsem should happen under a config option,
see the "AIM7 40% regression with 2.6.26-rc1" thread.