Messages in this thread | | | Subject | RE: [patch -mm series] ia64 specific /dev/mem handlers | Date | Tue, 22 Feb 2005 10:05:42 -0800 | From | "Luck, Tony" <> |
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>On Tue, Feb 22, 2005 at 09:41:04AM -0500, Jes Sorensen wrote: >> >> + if (page->flags & PG_uncached) >> >> Andrew> dude. That ain't gonna work ;) >> >> Pardon my lack of clue, but why not? > >I think you're supposed to always use test_bit() to check page flags
You defined PG_uncached as "20" ... so either:
if (page->flags & (1<<PG_uncached))
or (much better) to use:
test_bit(PG_uncached, &page->flags).
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