On Sat, 21 Apr 2001, Russell King wrote:
>
> Erm, spin_lock()? What if up_read or up_write gets called from interrupt
> context (is this allowed)?
Currently that is not allowed.
We allow it for regular semaphores, but not for rw-semaphores.
We may some day have to revisit that issue, but I s
On Fri, 20 Apr 2001, Andrea Arcangeli wrote:
>
> While dropping the list_empty check to speed up the fast path I faced the same
> complexity of the 2.4.4pre4 lib/rwsem.c and so before reinventing the wheel I
> read how the problem was solved in 2.4.4pre4.
I would suggest the following:
- the
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