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SubjectRe: [PATCH 1/2] MADVISE_FREE, THP: Fix madvise_free_huge_pmd return value after splitting
On Tue, Jun 28, 2016 at 10:36:29AM -0700, Huang, Ying wrote:
> From: Huang Ying <ying.huang@intel.com>
>
> madvise_free_huge_pmd should return 0 if the fallback PTE operations are
> required. In madvise_free_huge_pmd, if part pages of THP are discarded,
> the THP will be split and fallback PTE operations should be used if
> splitting succeeds. But the original code will make fallback PTE
> operations skipped, after splitting succeeds. Fix that via make
> madvise_free_huge_pmd return 0 after splitting successfully, so that the
> fallback PTE operations will be done.
>
> Cc: Minchan Kim <minchan@kernel.org>
> Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Acked-by: Minchan Kim <minchan@kernel.org>

Thanks!

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