On Mon, Dec 08, 2014 at 10:00:50AM +0800, Wang, Yalin wrote: > This patch add KPF_ZERO_PAGE flag for zero_page, > so that userspace process can notice zero_page from > /proc/kpageflags, and then do memory analysis more accurately. > > Signed-off-by: Yalin Wang <yalin.w...@sonymobile.com> > --- > Documentation/vm/pagemap.txt | 5 +++++ > fs/proc/page.c | 16 +++++++++++++--- > include/linux/huge_mm.h | 12 ++++++++++++ > include/uapi/linux/kernel-page-flags.h | 1 + > mm/huge_memory.c | 7 +------ > 5 files changed, 32 insertions(+), 9 deletions(-) > > diff --git a/Documentation/vm/pagemap.txt b/Documentation/vm/pagemap.txt > index 5948e45..fdeb06e 100644 > --- a/Documentation/vm/pagemap.txt > +++ b/Documentation/vm/pagemap.txt > @@ -62,6 +62,8 @@ There are three components to pagemap: > 20. NOPAGE > 21. KSM > 22. THP > + 23. BALLOON > + 24. ZERO_PAGE > > Short descriptions to the page flags: > > @@ -102,6 +104,9 @@ Short descriptions to the page flags: > 22. THP > contiguous pages which construct transparent hugepages > > +24. ZERO_PAGE > + zero page for pfn_zero or huge_zero page > + > [IO related page flags] > 1. ERROR IO error occurred > 3. UPTODATE page has up-to-date data
Would be nice to document BALLOON while you're there. Otherwise looks good to me. Acked-by: Kirill A. Shutemov <kirill.shute...@linux.intel.com> -- Kirill A. Shutemov -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
