page flags: add PAGEFLAGS_FALSE for flags that are always false
Turns out that there are a number of times that a flag is simply always returning 0. Define a macro for that. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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