Re: [PATCH] struct page shrinkage

Rik van Riel
2002-03-06T18:09:29Z

On Wed, 6 Mar 2002, Bulent Abali wrote:
> >Rik van Riel wrote:
> >>
> >> + clear_bit(PG_locked, &p->flags);
> >
> >Please don't do this. Please use the macros. If they're not
> >there, please create them.
> >
> >Bypassing the abstractions in this manner confounds people
> >who are implementing global locked-page accounting.
>
> I have an application which needs to know the total number of locked and
> dirtied pages at any given time. In which application locked-page
> accounting is done? I don't see it in base 2.5.5. Are there any patches
> or such that you can give pointers to?

You could modify lock_page to do statistics. This is
made easier if you are sure that every driver uses
lock_page / LockPage and UnlockPage

I'm happy Andrew made me clean up the drivers instead
of just fixing them ;)

regards,

Rik
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