Ingo Molnar wrote:
* Nick Piggin <[email protected]> wrote:
It really is just like a reentrant rw semaphore... I don't see the
point of the name change, but I guess we don't like reentrant locks so
calling it something else might go down better with Linus ;)
what would fit best is a per-cpu scalable (on the read-side)
self-reentrant rw mutex. We are doing cpu hotplug locking in things like
fork or the slab code, while most boxes will do a CPU hotplug event only
once in the kernel's lifetime (during bootup), so a classic global
read-write lock is unjustified.
I agree with you completely.
--
SUSE Labs, Novell Inc.
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