On Wed, 2 Jul 2014 16:26:54 +0800
Baoquan He <[email protected]> wrote:
> On 06/17/14 at 02:32am, Atsushi Kumagai wrote:
>
> > +static void
> > +setup_page_is_hugepage(void)
> > +{
> > + if (NUMBER(PG_head) != NOT_FOUND_NUMBER) {
> > + if (NUMBER(PG_tail) == NOT_FOUND_NUMBER) {
> > + /*
> > + * If PG_tail is not explicitly saved, then assume
> > + * that it immediately follows PG_head.
> > + */
> > + NUMBER(PG_tail) = NUMBER(PG_head) + 1;
> > + }
> > + } else if ((NUMBER(PG_compound) != NOT_FOUND_NUMBER)
> > + && (info->dump_level & DL_EXCLUDE_USER_DATA)) {
>
> Hi,
>
> I may not understand hugepage well. I am wondering why hugepage
> filtering can't be done if PG_compound is available.
Oh, maybe I'm missing something. What do you suggest as an alternative
way to recognize a huge page if the value of PG_compound is not known?
Petr Tesarik
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