Re: [ltt-dev] [RFC git tree] Userspace RCU (urcu) for Linux (repost)

From: Mike Frysinger
Date: Sat Feb 14 2009 - 12:37:21 EST


On Sat, Feb 14, 2009 at 10:06, Paul E. McKenney wrote:
> Other potential issues include unrelated processes that share memory via
> shmget() or mmap() -- presumably groups of such processes would need to
> be bound to a single CPU?

using PROT_WRITE with MAP_SHARED is a mess with no-mmu already ... in
other words, it isnt in use in practice as most of the time, the
kernel wont even grant it

i dont believe we've looked at shm/ipc ... i'll open a tracker item on
our side to review it
-mike
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