• Kirill A. Shutemov's avatar
    mm/gup: Move permission checks into helpers · e7884f8e
    Kirill A. Shutemov authored
    This is a preparation patch for the transition of x86 to the generic GUP_fast()
    implementation.
    
    On x86, we would need to do additional permission checks to determine if
    access is allowed.
    
    Let's abstract it out into separate helpers.
    Signed-off-by: default avatarKirill 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/20170316152655.37789-3-kirill.shutemov@linux.intel.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
    e7884f8e
pgtable.h 26.2 KB