# \[PATCH v10 3/7\] sparc: add pmd\_\[dirty\|mkclean\] for THP - From: Minchan Kim \ - Date: 2014-07-07 00:53:49 - List: linux-api - Page: https://ratatoskr.run/linux-api/2014/07/4288008 - Thread: https://ratatoskr.run/linux-mm/2014/07/4288002/t.md ```text 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_dirty and pmd_mkclean for THP page MADV_FREE support. Cc: "David S. Miller" Cc: Signed-off-by: Minchan Kim --- arch/sparc/include/asm/pgtable_64.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index 3770bf5c6e1b..0a3e5fdfead2 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -666,6 +666,13 @@ static inline unsigned long pmd_young(pmd_t pmd) return pte_young(pte); } +static inline int pmd_dirty(pmd_t pmd) +{ + pte_t pte = __pte(pmd_val(pmd)); + + return pte_dirty(pte); +} + static inline unsigned long pmd_write(pmd_t pmd) { pte_t pte = __pte(pmd_val(pmd)); @@ -723,6 +730,15 @@ static inline pmd_t pmd_mkdirty(pmd_t pmd) return __pmd(pte_val(pte)); } +static inline pmd_mkclean(pmd_t pmd) +{ + pte_t pte = __pte(pmd_val(pmd)); + + pte = pte_mkclean(pte); + + return __pmd(pte_val(pte)); +} + static inline pmd_t pmd_mkyoung(pmd_t pmd) { pte_t pte = __pte(pmd_val(pmd)); -- 2.0.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org ```