On Wed, Mar 27, 2019 at 05:23:05PM -0700, Igor Pylypiv wrote: > On Wed, Mar 27, 2019 at 4:51 PM Tobin C. Harding <me@xxxxxxxx> wrote: > > > > On Wed, Mar 27, 2019 at 07:34:58PM -0500, Jesse Simpson wrote: > > > 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. > > > > Cheers Jesse, confirmation that I've not gone mad - that's a win. > > > > I'll repost this to mm-linux tomorrow if no one on here knows. > > > > thanks, > > Tobin. > > > > _______________________________________________ > > Kernelnewbies mailing list > > Kernelnewbies@xxxxxxxxxxxxxxxxx > > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > Hi Tobin and Jesse, > > Neither grep nor ctags are going to help you here :) > > PageHead is implicitly defined using macros __PAGEFLAG: > __PAGEFLAG(Head, head, PF_ANY) CLEARPAGEFLAG(Head, head, PF_ANY) > (https://elixir.bootlin.com/linux/v5.0.5/source/include/linux/page-flags.h#L517) > > __PAGEFLAG defines TESTPAGEFLAG: > (https://elixir.bootlin.com/linux/v5.0.5/source/include/linux/page-flags.h#L248) > > and TESTPAGEFLAG defines PageHead: > #define TESTPAGEFLAG(uname, lname, policy) \ > static __always_inline int Page##uname(struct page *page) > (https://elixir.bootlin.com/linux/v5.0.5/source/include/linux/page-flags.h#L215) Thanks Igor. > See, it is simple :) hmmm macros - no further comment needed :) thanks Tobin _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
