Re: [PATCH v3 2/4] locking/rwsem: Don't wake up one's own task

[Peter Hurley]

On 05/12/2016 03:56 PM, Waiman Long wrote:
> As rwsem_down_read_failed() will queue itself and potentially call
> __rwsem_do_wake(sem, RWSEM_WAKE_ANY), it is possible that a reader
> will try to wake up its own task. This patch adds a check to make
> sure that this won't happen.

Although there's no particular harm in the current code, this at
least spells out this condition is normal (ie., when a failed reader
wakes itself while waking the other waiting readers).

Reviewed-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>