Transitioning if_addr_lock to an rwlock

[Gleb Smirnoff]

On Tue, Dec 27, 2011 at 11:29:02AM +0100, Ermal Lu?i wrote:
E> 2011/12/27 Gleb Smirnoff <glebius at freebsd.org>:
E> > On Thu, Dec 22, 2011 at 11:30:01AM -0500, John Baldwin wrote:
E> > J> You can find the patch for 8.x at
E> > J> http://www.freebsd.org/~jhb/patches/if_addr_rwlock.patch
E> >
E> > Just my two pennies: for head/ patching if ip_carp.c should
E> > be straightforward:
E> >
E> > 1) Using W in carp_alloc_if() and carp_free_if().
E> > 2) Using R everywhere else.
E> >
E> 
E> I would not say that is true!
E> 
E> Look at this https://github.com/bsdperimeter/pfsense-tools/blob/master/patches/RELENG_8_1/carp_livelock_fixes.diff
E> I already did this for carp on pfSense for 8.x and should be the same for HEAD.
E> That has undergone testing and catching up where R vs W.

Ermal,

in head/ we already got new CARP implementation.

-- 
Totus tuus, Glebius.