0001-mm-rmap-Correct-stats-calulation-in-__folio_remove_r

[史思远]

Dear mm maintainers,

This patch fixes wrong stats calulation in __folio_remove_rmap().

diff --git a/mm/rmap.c b/mm/rmap.c

index 52357d79917c..f9aeabd691fa 100644

--- a/mm/rmap.c

+++ b/mm/rmap.c

@@ -1567,7 +1567,7 @@ static __always_inline void __folio_remove_rmap(struct folio *folio,

                    list_empty(&folio->_deferred_list))

                        deferred_split_folio(folio);

        }

-       __folio_mod_stat(folio, nr, nr_pmdmapped);

+       __folio_mod_stat(folio, -nr, -nr_pmdmapped);

 

        /*

         * It would be tidy to reset folio_test_anon mapping when fully

BRs,

Stephen

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