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SubjectRe: [PATCH] Lightweight userspace semaphores...
On Mon, Feb 25, 2002 at 04:39:56PM +0000, Alan Cox wrote:
> _alloca
> mmap
> Still fits on the stack 8)

Are we sure that forcing semaphore overhead to the size of a page is a
good idea? I'd much rather see a sleep/wakeup mechanism akin to wait
queues be exported by the kernel so that userspace can implement a rich
set of locking functions on top of that in whatever shared memory is
being used.

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