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SubjectRe: [PATCH] __free_pages_ok oops
On Thu, 7 Feb 2002, Hugh Dickins wrote:

> > if (PageLRU(page)) {
> > if (in_interrupt()) {
> > add_page_to_special_list(page);
> > return;
> > } else
> > lru_cache_del(page);
> > }
> If this were a common case where many pages end up, yes, we'd
> need a separate special list; but it's a very rare case

Think of a web or ftp server doing nothing but sendfile()

> I was proposing we revert to distinguishing page_cache_release
> from put_page, page_cache_release doing the lru_cache_del; and
> I'd like to add my in_interrupt() BUG() there for now, just as
> a sanity check. You are proposing that we keep the current,
> post-Ben, structure of doing it in __free_pages_ok if possible.

So how exactly would pages be freed ?

You still need to do the check of whether the page can
be freed somewhere.


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