On Sun, 25 Mar 2001, Stephen C. Tweedie wrote:

Rik, do you think it is really necessary to take the page lock and
release it inside lookup_swap_cache?  I may be overlooking something,
but I can't see the benefit of it ---

I don't think we need to do this, except to protect us from
using a page which isn't up-to-date yet and locked because
of disk IO.

Reclaim_page() takes the pagecache_lock before trying to
free anything, so there's no reason to lock against that.

regards,

Rik
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