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SubjectRe: [Lhms-devel] [RFC] buddy allocator without bitmap [2/4]
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On Thu, 2004-08-26 at 05:03, Hiroyuki KAMEZAWA wrote:
> - MARK_USED(index + size, high, area);
> + page[size].flags |= (1 << PG_private);
> + page[size].private = high;
> }
> return page;
> }
...
> + /* Atomic operation is needless here */
> + page->flags &= ~(1 << PG_private);

See linux/page_flags.h:

#define SetPagePrivate(page) set_bit(PG_private, &(page)->flags)
#define ClearPagePrivate(page) clear_bit(PG_private, &(page)->flags)
#define PagePrivate(page) test_bit(PG_private, &(page)->flags)

-- Dave

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