On 08/17/2014 08:17 PM, Minchan Kim wrote:

MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent
overwrite of the contents since MADV_FREE syscall is called for
THP page.

This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE
support.

Cc: Thomas Gleixner <redacted>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Acked-by: Zhang Yanfei <redacted>
Acked-by: Kirill A. Shutemov <redacted>
Signed-off-by: Minchan Kim <minchan@kernel.org>

Acked-by: Rik van Riel <redacted>

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