MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite of the contents since MADV_FREE syscall is called for THP page.
This patch adds pmd_mkclean for THP page MADV_FREE support. Cc: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Cc: Russell King <[email protected]> Cc: [email protected] Cc: Steve Capper <[email protected]> Acked-by: Steve Capper <[email protected]> Signed-off-by: Minchan Kim <[email protected]> --- arch/arm/include/asm/pgtable-3level.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h index 06e0bc0f8b00..bc913a065270 100644 --- a/arch/arm/include/asm/pgtable-3level.h +++ b/arch/arm/include/asm/pgtable-3level.h @@ -234,6 +234,7 @@ PMD_BIT_FUNC(mkold, &= ~PMD_SECT_AF); PMD_BIT_FUNC(mksplitting, |= L_PMD_SECT_SPLITTING); PMD_BIT_FUNC(mkwrite, &= ~L_PMD_SECT_RDONLY); PMD_BIT_FUNC(mkdirty, |= L_PMD_SECT_DIRTY); +PMD_BIT_FUNC(mkclean, &= ~L_PMD_SECT_DIRTY); PMD_BIT_FUNC(mkyoung, |= PMD_SECT_AF); #define pmd_mkhuge(pmd) (__pmd(pmd_val(pmd) & ~PMD_TABLE_BIT)) -- 2.0.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
