On Tue, 15 Sep 2009, Eric B Munson wrote: > Resending because this seems to have fallen between the cracks. Yes, indeed. I think it isn't quite what Arnd was suggesting, but I agree with you that we might as well go for 0x080000 (so that even Alpha can be just a cut-and-paste job from asm-generic), and right now it's more important to finalize the number than what file it appears in. Acked-by: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx> > > The patch > hugetlb-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions.patch > used the value 0x40 for MAP_HUGETLB which is the same value used for > various other flags on some architectures. This collision causes > unexpected use of huge pages in the best case and mmap to fail with > ENOMEM or ENOSYS in the worst. This patch changes the value for > MAP_HUGETLB to a value that is not currently used on any arch. > > This patch should be considered a fix to > hugetlb-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions.patch. > > Reported-by: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx> > Signed-off-by: Eric B Munson <ebmunson@xxxxxxxxxx> > --- > include/asm-generic/mman-common.h | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/include/asm-generic/mman-common.h b/include/asm-generic/mman-common.h > index 12f5982..e6adb68 100644 > --- a/include/asm-generic/mman-common.h > +++ b/include/asm-generic/mman-common.h > @@ -19,7 +19,7 @@ > #define MAP_TYPE 0x0f /* Mask for type of mapping */ > #define MAP_FIXED 0x10 /* Interpret addr exactly */ > #define MAP_ANONYMOUS 0x20 /* don't use a file */ > -#define MAP_HUGETLB 0x40 /* create a huge page mapping */ > +#define MAP_HUGETLB 0x080000 /* create a huge page mapping */ > > #define MS_ASYNC 1 /* sync memory asynchronously */ > #define MS_INVALIDATE 2 /* invalidate the caches */ > -- > 1.6.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
