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SubjectRE: [PATCH 26/36] mm: rework mapcount accounting to enable 4k mapping of THPs
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Kirill A. Shutemov wrote:
> TESTPAGEFLAG_FALSE(TransHuge)
> TESTPAGEFLAG_FALSE(TransCompound)
> TESTPAGEFLAG_FALSE(TransTail)
> +TESTPAGEFLAG_FALSE(DoubleMap)
> + TESTSETFLAG_FALSE(DoubleMap)
> + CLEARPAGEFLAG_NOOP(DoubleMap)
> #endif
>
> /*

Fixlet for !THP:


diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 757a4b162242..eec24e6391d3 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -633,7 +633,7 @@ TESTPAGEFLAG_FALSE(TransCompound)
TESTPAGEFLAG_FALSE(TransTail)
TESTPAGEFLAG_FALSE(DoubleMap)
TESTSETFLAG_FALSE(DoubleMap)
- CLEARPAGEFLAG_NOOP(DoubleMap)
+ TESTCLEARFLAG_FALSE(DoubleMap)
#endif

/*

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