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mm: numa: avoid unnecessary work on the failure path
If a PMD changes during a THP migration then migration aborts but the failure path is doing more work than is necessary. Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Alex Thorlton <athorlton@sgi.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -1780,7 +1780,8 @@ fail_putback:
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putback_lru_page(page);
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mod_zone_page_state(page_zone(page),
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NR_ISOLATED_ANON + page_lru, -HPAGE_PMD_NR);
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goto out_fail;
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goto out_unlock;
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}
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/*
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@ -1854,6 +1855,7 @@ out_dropref:
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}
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spin_unlock(ptl);
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out_unlock:
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unlock_page(page);
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put_page(page);
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return 0;
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