From 376027f2a3888ef3dec73ee41f85d90e51162d78 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?= Date: Tue, 8 Sep 2015 11:24:16 -0300 Subject: Add TuxOnIce support --- mm/page_alloc.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'mm/page_alloc.c') diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 5b5240b7f..3a167b135 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -61,6 +61,7 @@ #include #include #include +#include #include #include @@ -726,6 +727,12 @@ static inline int free_pages_check(struct page *page) if (unlikely(page->mem_cgroup)) bad_reason = "page still charged to cgroup"; #endif + if (unlikely(PageTOI_Untracked(page))) { + // Make it writable and included in image if allocated. + ClearPageTOI_Untracked(page); + // If it gets allocated, it will be dirty from TOI's POV. + SetPageTOI_Dirty(page); + } if (unlikely(bad_reason)) { bad_page(page, bad_reason, bad_flags); return 1; @@ -1324,6 +1331,11 @@ static int prep_new_page(struct page *page, unsigned int order, gfp_t gfp_flags, struct page *p = page + i; if (unlikely(check_new_page(p))) return 1; + if (unlikely(toi_incremental_support() && gfp_flags & ___GFP_TOI_NOTRACK)) { + // Make the page writable if it's protected, and set it to be untracked. + SetPageTOI_Untracked(p); + toi_make_writable(init_mm.pgd, (unsigned long) page_address(p)); + } } set_page_private(page, 0); -- cgit v1.2.3