On Mon, 25 Feb 2002, Alan Cox wrote:
>
> Any kernel special cases it adds will be unswappable because they are in
> kernel space (not the semaphores here - we want them to be swappable and
> they can be)
Alan, wake up!
I'm talking about anonymous semaphores, the kernel implementation can just
map a normal anonymous page there.
On 99.9% of all machines out there, you can have semaphores in perfectly
normal memory.
> When you create a shared mapping by passing -1 to mmap we do
Why are you talking about shared mappings?
The most common case for any fast semaphores are for _threaded_
applications. No shared memory, no nothing.
Linus
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This archive was generated by hypermail 2b29 : Thu Feb 28 2002 - 21:00:16 EST