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| author | Oliver O'Halloran <oohall@gmail.com> | 2017-09-07 01:20:58 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-07 02:27:26 +0200 |
| commit | 09180ca4b3bc7b1ffdbae62a75f716dfc0685861 (patch) | |
| tree | 2128cd9de21d8803f14b7d6893738305388e9c89 | |
| parent | mm/mremap: fail map duplication attempts for private mappings (diff) | |
| download | linux-09180ca4b3bc7b1ffdbae62a75f716dfc0685861.tar.xz linux-09180ca4b3bc7b1ffdbae62a75f716dfc0685861.zip | |
mm/gup: make __gup_device_* require THP
These functions are the only bits of generic code that use
{pud,pmd}_pfn() without checking for CONFIG_TRANSPARENT_HUGEPAGE. This
works fine on x86, the only arch with devmap support, since the *_pfn()
functions are always defined there, but this isn't true for every
architecture.
Link: http://lkml.kernel.org/r/20170626063833.11094-1-oohall@gmail.com
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/gup.c | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -1352,7 +1352,7 @@ static int gup_pte_range(pmd_t pmd, unsigned long addr, unsigned long end, } #endif /* __HAVE_ARCH_PTE_SPECIAL */ -#ifdef __HAVE_ARCH_PTE_DEVMAP +#if defined(__HAVE_ARCH_PTE_DEVMAP) && defined(CONFIG_TRANSPARENT_HUGEPAGE) static int __gup_device_huge(unsigned long pfn, unsigned long addr, unsigned long end, struct page **pages, int *nr) { |