Hi Tobin, I took a look on my system, and I wasn't able to find where PageHead is defined either. I used grep to search for it as well as vim with ctags. Maybe it's hidden away in some built-in.a or binary file. I'm looking on version 5.0.0. Good luck, Jesse Simpson On Thu, Mar 28, 2019 at 09:26:15AM +1100, Tobin C. Harding wrote: > Hi, > > I cannot locate the definition of PageHead? It seems to have > disappeared after v4.0? I can see it defined as a function here: > > https://elixir.bootlin.com/linux/v4.0/source/include/linux/page-flags.h#L401 > > But on the mainline (v5.1-rc2) I get: > > $ git grep ' PageHead' > include/linux/page-flags.h:int PageHeadHuge(struct page *page); > include/linux/page-flags.h: return PageHead(page); > include/linux/page-flags.h: return PageHead(page) && test_bit(PG_double_map, &page[1].flags); > mm/hugetlb.c: return PageHead(page) && PagePrivate(&page[1]); > mm/hugetlb.c: * PageHeadHuge() only returns true for hugetlbfs head page, but not for > mm/hugetlb.c:int PageHeadHuge(struct page *page_head) > > Clearly it is defined _somewhere_. Anyone any idea what brain > dysfunction I am having right now? > > thanks, > Tobin. > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
