The patch titled
thp: add pmd_modify
has been removed from the -mm tree. Its filename was
thp-add-pmd_modify.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: thp: add pmd_modify
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Add pmd_modify() for use with mprotect() on huge pmds.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/include/asm/pgtable.h | 10 ++++++++++
arch/x86/include/asm/pgtable_types.h | 1 +
2 files changed, 11 insertions(+)
diff -puN arch/x86/include/asm/pgtable.h~thp-add-pmd_modify arch/x86/include/asm/pgtable.h
--- a/arch/x86/include/asm/pgtable.h~thp-add-pmd_modify
+++ a/arch/x86/include/asm/pgtable.h
@@ -325,6 +325,16 @@ static inline pte_t pte_modify(pte_t pte
return __pte(val);
}
+static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
+{
+ pmdval_t val = pmd_val(pmd);
+
+ val &= _HPAGE_CHG_MASK;
+ val |= massage_pgprot(newprot) & ~_HPAGE_CHG_MASK;
+
+ return __pmd(val);
+}
+
/* mprotect needs to preserve PAT bits when updating vm_page_prot */
#define pgprot_modify pgprot_modify
static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot)
diff -puN arch/x86/include/asm/pgtable_types.h~thp-add-pmd_modify arch/x86/include/asm/pgtable_types.h
--- a/arch/x86/include/asm/pgtable_types.h~thp-add-pmd_modify
+++ a/arch/x86/include/asm/pgtable_types.h
@@ -72,6 +72,7 @@
/* Set of bits not changed in pte_modify */
#define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \
_PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY)
+#define _HPAGE_CHG_MASK (_PAGE_CHG_MASK | _PAGE_PSE)
#define _PAGE_CACHE_MASK (_PAGE_PCD | _PAGE_PWT)
#define _PAGE_CACHE_WB (0)
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
origin.patch
writeback-check-skipped-pages-on-wb_sync_all.patch
writeback-check-skipped-pages-on-wb_sync_all-update.patch
writeback-check-skipped-pages-on-wb_sync_all-update-fix.patch
mm-deactivate-invalidated-pages.patch
mm-deactivate-invalidated-pages-fix.patch
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