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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2017-03-16 18:26:53 +0300
committerIngo Molnar <mingo@kernel.org>2017-03-18 11:48:02 +0300
commitb59f65fa076a8eac2ff3a8ab7f8e1705b9fa86cb (patch)
tree3868d09eeb4a58fe368701a86cd4411df4bebf91 /include/linux/mm.h
parente93480537fd7ecaf5ed1a662a979376f6fee50e3 (diff)
downloadlinux-b59f65fa076a8eac2ff3a8ab7f8e1705b9fa86cb.tar.xz
mm/gup: Implement the dev_pagemap() logic in the generic get_user_pages_fast() function
This is a preparation patch for the transition of x86 to the generic GUP_fast() implementation. Prepare generic GUP_fast() to handle dev_pagemap(). At the moment, it's only implemented on x86. On non-x86, the new code will be compiled out. 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: Dan Williams <dan.j.williams@intel.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/20170316152655.37789-6-kirill.shutemov@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/mm.h')
-rw-r--r--include/linux/mm.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 5f01c88f0800..e197d3ca3e8a 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -430,6 +430,10 @@ static inline int pud_devmap(pud_t pud)
{
return 0;
}
+static inline int pgd_devmap(pgd_t pgd)
+{
+ return 0;
+}
#endif
/*