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1f5fee2cf2
Keep a non-zero placeholder after the count, for the my_bcmp comparison of the page against the zeropage. The lockless increment between 255 to 256 against a lockless my_bcmp could otherwise return false positives on ppc32le. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Tested-by: Michael Ellerman <mpe@ellerman.id.au> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Thierry Reding <treding@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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