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| author | Eric Paris <eparis@redhat.com> | 2014-03-07 17:41:32 +0100 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2014-03-07 17:41:32 +0100 |
| commit | b7d3622a39fde7658170b7f3cf6c6889bb8db30d (patch) | |
| tree | 64f4e781ecb2a85d675e234072b988560bcd25f1 /arch/x86/mm/gup.c | |
| parent | audit: whitespace fix in kernel-parameters.txt (diff) | |
| parent | Linux 3.13 (diff) | |
| download | linux-b7d3622a39fde7658170b7f3cf6c6889bb8db30d.tar.xz linux-b7d3622a39fde7658170b7f3cf6c6889bb8db30d.zip | |
Merge tag 'v3.13' into for-3.15
Linux 3.13
Conflicts:
include/net/xfrm.h
Simple merge where v3.13 removed 'extern' from definitions and the audit
tree did s/u32/unsigned int/ to the same definitions.
Diffstat (limited to 'arch/x86/mm/gup.c')
| -rw-r--r-- | arch/x86/mm/gup.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c index dd74e46828c0..0596e8e0cc19 100644 --- a/arch/x86/mm/gup.c +++ b/arch/x86/mm/gup.c @@ -83,6 +83,12 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr, pte_t pte = gup_get_pte(ptep); struct page *page; + /* Similar to the PMD case, NUMA hinting must take slow path */ + if (pte_numa(pte)) { + pte_unmap(ptep); + return 0; + } + if ((pte_flags(pte) & (mask | _PAGE_SPECIAL)) != mask) { pte_unmap(ptep); return 0; @@ -167,6 +173,13 @@ static int gup_pmd_range(pud_t pud, unsigned long addr, unsigned long end, if (pmd_none(pmd) || pmd_trans_splitting(pmd)) return 0; if (unlikely(pmd_large(pmd))) { + /* + * NUMA hinting faults need to be handled in the GUP + * slowpath for accounting purposes and so that they + * can be serialised against THP migration. + */ + if (pmd_numa(pmd)) + return 0; if (!gup_huge_pmd(pmd, addr, next, write, pages, nr)) return 0; } else { |