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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 11:24:16 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 11:24:16 -0300
commit376027f2a3888ef3dec73ee41f85d90e51162d78 (patch)
treeac9a9030d31cadc92fdc4145a3d9bf379064721f /include/linux/page-flags.h
parente5fd91f1ef340da553f7a79da9540c3db711c937 (diff)
Add TuxOnIce support
Diffstat (limited to 'include/linux/page-flags.h')
-rw-r--r--include/linux/page-flags.h25
1 files changed, 23 insertions, 2 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 41c93844f..bf858b220 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -109,6 +109,12 @@ enum pageflags {
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
PG_compound_lock,
#endif
+#ifdef CONFIG_TOI_INCREMENTAL
+ PG_toi_untracked, /* Don't track dirtiness of this page - assume always dirty */
+ PG_toi_ro, /* Page was made RO by TOI */
+ PG_toi_cbw, /* Copy the page before it is written to */
+ PG_toi_dirty, /* Page has been modified */
+#endif
__NR_PAGEFLAGS,
/* Filesystems */
@@ -288,6 +294,17 @@ TESTSCFLAG(HWPoison, hwpoison)
PAGEFLAG_FALSE(HWPoison)
#define __PG_HWPOISON 0
#endif
+#ifdef CONFIG_TOI_INCREMENTAL
+PAGEFLAG(TOI_RO, toi_ro)
+PAGEFLAG(TOI_Dirty, toi_dirty)
+PAGEFLAG(TOI_Untracked, toi_untracked)
+PAGEFLAG(TOI_CBW, toi_cbw)
+#else
+PAGEFLAG_FALSE(TOI_RO)
+PAGEFLAG_FALSE(TOI_Dirty)
+PAGEFLAG_FALSE(TOI_Untracked)
+PAGEFLAG_FALSE(TOI_CBW)
+#endif
/*
* On an anonymous page mapped into a user virtual memory area,
@@ -642,8 +659,12 @@ static inline void ClearPageSlabPfmemalloc(struct page *page)
* __PG_HWPOISON is exceptional because it needs to be kept beyond page's
* alloc-free cycle to prevent from reusing the page.
*/
-#define PAGE_FLAGS_CHECK_AT_PREP \
- (((1 << NR_PAGEFLAGS) - 1) & ~__PG_HWPOISON)
+#ifdef CONFIG_TOI_INCREMENTAL
+#define PAGE_FLAGS_CHECK_AT_PREP (((1 << NR_PAGEFLAGS) - 1) & \
+ ~((1 << PG_toi_dirty) | (1 << PG_toi_ro) | ~__PG_HWPOISON))
+#else
+#define PAGE_FLAGS_CHECK_AT_PREP (((1 << NR_PAGEFLAGS) - 1) & ~__PG_HWPOISON)
+#endif
#define PAGE_FLAGS_PRIVATE \
(1 << PG_private | 1 << PG_private_2)