Add a couple of more compound functions to avoid having to duplicate code in various places. Signed-off-by: Christoph Lameter --- include/linux/mm.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) Index: linux-2.6.21-rc7/include/linux/mm.h =================================================================== --- linux-2.6.21-rc7.orig/include/linux/mm.h 2007-04-24 11:33:34.000000000 -0700 +++ linux-2.6.21-rc7/include/linux/mm.h 2007-04-24 11:32:16.000000000 -0700 @@ -330,6 +330,21 @@ static inline int compound_order(struct return (unsigned long)page[1].lru.prev; } +static inline int compound_pages(struct page *page) +{ + return 1 << compound_order(page); +} + +static inline int compound_shift(struct page *page) +{ + return PAGE_SHIFT + compound_order(page); +} + +static inline int compound_size(struct page *page) +{ + return PAGE_SIZE << compound_order(page); +} + /* * Multiple processes may "see" the same page. E.g. for untouched * mappings of /dev/null, all processes see the same page full of -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/