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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-09-08 01:01:14 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-09-08 01:01:14 -0300 |
| commit | e5fd91f1ef340da553f7a79da9540c3db711c937 (patch) | |
| tree | b11842027dc6641da63f4bcc524f8678263304a3 /include/linux/page-flags.h | |
| parent | 2a9b0348e685a63d97486f6749622b61e9e3292f (diff) | |
Linux-libre 4.2-gnu
Diffstat (limited to 'include/linux/page-flags.h')
| -rw-r--r-- | include/linux/page-flags.h | 32 |
1 files changed, 7 insertions, 25 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 6d4f3fc5e..41c93844f 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -109,12 +109,6 @@ 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 */ @@ -294,17 +288,6 @@ 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, @@ -648,20 +631,19 @@ static inline void ClearPageSlabPfmemalloc(struct page *page) 1 << PG_private | 1 << PG_private_2 | \ 1 << PG_writeback | 1 << PG_reserved | \ 1 << PG_slab | 1 << PG_swapcache | 1 << PG_active | \ - 1 << PG_unevictable | __PG_MLOCKED | __PG_HWPOISON | \ + 1 << PG_unevictable | __PG_MLOCKED | \ __PG_COMPOUND_LOCK) /* * Flags checked when a page is prepped for return by the page allocator. - * Pages being prepped should not have any flags set. It they are set, + * Pages being prepped should not have these flags set. It they are set, * there has been a kernel bug or struct page corruption. + * + * __PG_HWPOISON is exceptional because it needs to be kept beyond page's + * alloc-free cycle to prevent from reusing the page. */ -#ifdef CONFIG_TOI_INCREMENTAL -#define PAGE_FLAGS_CHECK_AT_PREP (((1 << NR_PAGEFLAGS) - 1) & \ - ~((1 << PG_toi_dirty) | (1 << PG_toi_ro))) -#else -#define PAGE_FLAGS_CHECK_AT_PREP ((1 << NR_PAGEFLAGS) - 1) -#endif +#define PAGE_FLAGS_CHECK_AT_PREP \ + (((1 << NR_PAGEFLAGS) - 1) & ~__PG_HWPOISON) #define PAGE_FLAGS_PRIVATE \ (1 << PG_private | 1 << PG_private_2) |