pageflags_get
ASSERT_EQ(pageflags_get(self->pfn, self->kpageflags_fd, &pfn_flags), 0);
ASSERT_EQ(pageflags_get(self->pfn, self->kpageflags_fd, &pfn_flags), 0);
if (pageflags_get(pfn, kpageflags_fd, flags))
if (pageflags_get(pfn, kpageflags_fd, &pfn_flags))
if (pageflags_get(pfn_head, kpageflags_fd, &pfn_flags))
if (pageflags_get(pfn_head + i, kpageflags_fd, &pfn_flags))
if (pageflags_get(pfn_head + nr_pages, kpageflags_fd, &pfn_flags))
int pageflags_get(unsigned long pfn, int kpageflags_fd, uint64_t *flags);