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author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2017-03-16 18:26:49 +0300 |
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committer | Ingo Molnar <mingo@kernel.org> | 2017-03-18 09:48:01 +0100 |
commit | 9a804fecee232e71b47ac37d62fd3d5d66b08b91 (patch) | |
tree | c4af2fbda421d6bd1b6f5f6599d6cccd32548bb4 /mm/gup.c | |
parent | f991376e444aee8f5643a45703c1433bf7948940 (diff) | |
download | linux-9a804fecee232e71b47ac37d62fd3d5d66b08b91.tar.gz |
mm/gup: Drop the arch_pte_access_permitted() MMU callback
The only arch that defines it to something meaningful is x86. But x86 doesn't use the generic GUP_fast() implementation -- the only place where the callback is called. Let's drop it. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Aneesh Kumar K . V <aneesh.kumar@linux.vnet.ibm.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dann Frazier <dann.frazier@canonical.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Steve Capper <steve.capper@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arch@vger.kernel.org Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/20170316152655.37789-2-kirill.shutemov@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/gup.c')
-rw-r--r-- | mm/gup.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/mm/gup.c b/mm/gup.c index 04aa405350dc..3f2338ba3402 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -1216,9 +1216,6 @@ static int gup_pte_range(pmd_t pmd, unsigned long addr, unsigned long end, pte_protnone(pte) || (write && !pte_write(pte))) goto pte_unmap; - if (!arch_pte_access_permitted(pte, write)) - goto pte_unmap; - VM_BUG_ON(!pfn_valid(pte_pfn(pte))); page = pte_page(pte); head = compound_head(page); |