Re: [PATCH] mm: Implement Swap Prefetching v23

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Nick Piggin <[email protected]> wrote:
>
> Andrew Morton wrote:
> > Con Kolivas <[email protected]> wrote:
> > 
> >> Ok I see. We don't have a way to add to the tail of that list though?
> > 
> > 
> > del_page_from_lru() + (new) add_page_to_inactive_list_tail().
> > 
> > 
> >>Is that 
> >> a worthwhile addition to this (ever growing) project? That would definitely 
> >> have an impact on the other code if not all done within swap_prefetch.c.. 
> >> which would also be quite a large open coded something.
> > 
> > 
> > Do both of the above in a new function in swap.c.
> > 
> 
> That'll require the caller to do lru locking.
> 
> I'd add an lru_cache_add_tail, use it instead of the current lru_cache_add
> that Con's got now, and just implement it in a simple manner, without
> pagevecs.

umm, that's what I said ;)
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