From: Minchan Kim Date: Sat, 16 Jan 2016 00:55:24 +0000 (-0800) Subject: arch/sparc/include/asm/pgtable_64.h: add pmd_[dirty|mkclean] for THP X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=79cedb8f62f116e72079c4d424edbc3d90302333;p=linux-beck.git arch/sparc/include/asm/pgtable_64.h: add pmd_[dirty|mkclean] for THP 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. Signed-off-by: Minchan Kim Cc: "James E.J. Bottomley" Cc: "Kirill A. Shutemov" Cc: Shaohua Li Cc: Cc: Andrea Arcangeli Cc: Andy Lutomirski Cc: Arnd Bergmann Cc: Benjamin Herrenschmidt Cc: Catalin Marinas Cc: Chen Gang Cc: Chris Zankel Cc: Daniel Micay Cc: Darrick J. Wong Cc: David S. Miller Cc: Helge Deller Cc: Hugh Dickins Cc: Ivan Kokshaysky Cc: Jason Evans Cc: Johannes Weiner Cc: KOSAKI Motohiro Cc: Kirill A. Shutemov Cc: Matt Turner Cc: Max Filippov Cc: Mel Gorman Cc: Michael Kerrisk Cc: Michal Hocko Cc: Mika Penttil Cc: Ralf Baechle Cc: Richard Henderson Cc: Rik van Riel Cc: Roland Dreier Cc: Russell King Cc: Shaohua Li Cc: Will Deacon Cc: Wu Fengguang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index f5bfcd66aeb5..7a38d6a576c5 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -710,6 +710,15 @@ static inline pmd_t pmd_mkdirty(pmd_t pmd) return __pmd(pte_val(pte)); } +static inline pmd_t 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));