Re: [PATCH 06/11] rwsem: wake queued readers when writer blocks onactive read lock

From: Tony Luck
Date: Thu Aug 12 2010 - 12:22:17 EST


On Wed, Aug 11, 2010 at 10:02 PM, Michel Lespinasse <walken@xxxxxxxxxx> wrote:
> #define RWSEM_UNLOCKED_VALUE __IA64_UL_CONST(0x0000000000000000)
> #define RWSEM_ACTIVE_BIAS (1L)
> #define RWSEM_ACTIVE_MASK (0xffffffffL)
> #define RWSEM_WAITING_BIAS (-0x100000000L)
> #define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
> #define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)

Thanks - that fixes it for me.

-Tony
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