If the PMD is flushed then a parallel fault in handle_mm_fault() will enter
the pmd_none and do_huge_pmd_anonymous_page() path where it'll attempt
to insert a huge zero page. This is wasteful so the patch avoids clearing
the PMD when setting pmd_numa.
Cc: sta...@vger.kernel.org
Signed-off-by: Mel
If the PMD is flushed then a parallel fault in handle_mm_fault() will enter
the pmd_none and do_huge_pmd_anonymous_page() path where it'll attempt
to insert a huge zero page. This is wasteful so the patch avoids clearing
the PMD when setting pmd_numa.
Cc: sta...@vger.kernel.org
Signed-off-by: Mel
On 12/09/2013 02:08 AM, Mel Gorman wrote:
> If the PMD is flushed then a parallel fault in handle_mm_fault() will enter
> the pmd_none and do_huge_pmd_anonymous_page() path where it'll attempt
> to insert a huge zero page. This is wasteful so the patch avoids clearing
> the PMD when setting
On 12/09/2013 02:08 AM, Mel Gorman wrote:
If the PMD is flushed then a parallel fault in handle_mm_fault() will enter
the pmd_none and do_huge_pmd_anonymous_page() path where it'll attempt
to insert a huge zero page. This is wasteful so the patch avoids clearing
the PMD when setting pmd_numa.
If the PMD is flushed then a parallel fault in handle_mm_fault() will enter
the pmd_none and do_huge_pmd_anonymous_page() path where it'll attempt
to insert a huge zero page. This is wasteful so the patch avoids clearing
the PMD when setting pmd_numa.
Cc: sta...@vger.kernel.org
Signed-off-by: Mel
If the PMD is flushed then a parallel fault in handle_mm_fault() will enter
the pmd_none and do_huge_pmd_anonymous_page() path where it'll attempt
to insert a huge zero page. This is wasteful so the patch avoids clearing
the PMD when setting pmd_numa.
Cc: sta...@vger.kernel.org
Signed-off-by: Mel
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