On Mon, 14 May 2007 10:50:54 +1000
Con Kolivas <[email protected]> wrote:
> akpm, please queue on top of "mm: swap prefetch improvements"
>
> ---
> Failed radix_tree_insert wasn't being handled leaving stale kmem.
>
> The list should be iterated over in the reverse order when prefetching.
>
> Make the yield within kprefetchd stronger through the use of cond_resched.
hm.
>
> - might_sleep();
> - if (!prefetch_suitable())
> + /* Yield to anything else running */
> + if (cond_resched() || !prefetch_suitable())
> goto out_unlocked;
So if cond_resched() happened to schedule away, we terminate this
swap-tricking attempt. It's not possible to determine the reasons for this
from the code or from the changelog (==bad).
How come?
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