On 05/26/2013 05:08 AM, Manfred Spraul wrote:
There are two places that can contain alter operations:
- the global queue: sma->pending_alter
- the per-semaphore queues: sma->sem_base[].pending_alter.
Since one of the queues must be processed first, this causes an odd
priorization of the wakeups:
Right now, complex operations have priority over simple ops.
The patch restores the behavior of linux <=3.0.9: The longest
waiting operation has the highest priority.
This is done by using only one queue:
- if there are complex ops, then sma->pending_alter is used.
- otherwise, the per-semaphore queues are used.
As a side effect, do_smart_update_queue() becomes much simpler:
No more goto logic.
Signed-off-by: Manfred Spraul <manf...@colorfullife.com>
This is the one where I really wonder whether the
complexity is warranted.
Again, the code does look correct.
Acked-by: Rik van Riel <r...@redhat.com>
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