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charset="US-ASCII"; x-default=true X-Rspamd-Queue-Id: EE62C20005 X-Rspam-User: X-Rspamd-Server: rspam09 X-Stat-Signature: adixigijyua7mkin7kr61njodsat16th X-HE-Tag: 1783013116-270492 X-HE-Meta: U2FsdGVkX1/aUwMHj6G/4yLwlBCyxpRzVtI5+GCnXw29SVXc9W2XCbF0eRl6+0ZOBxwrg741GJtjKBSqNEOER+jlRlwGmBhgTCKA+ZGQMqqoRppe4Zlr5crC3NpgHnPdjqWLDyr67D+48pXkjGBLz2mF7y4cVTdr5qZYDvbes8Ej8tmeIFv7nCdJW2v2llI8RRGdvpqVufelOqV6nJNjgmh1Lc82tqrQSerS9ePTd4tIj+CCX93ufVl5i849ke8O85kDhRCcXs69SzGUqhGHgv66nIdDX0Ib5aqieVOc4+YveyXl0M1ZMJayF7JeGzDWWczTgXqJsTEXbeUS3iuZxZfpQViuxqxUfbzy6EuEXOEBNsKfagKkEGYoZHsw7QL8ONU1wRZ9DOSM6TdMqVwuf4xYwFdeBWtwV+nemEKWiYai3en/gcColqG4Jcym04Le4LtuqwUDbDz4SskAcw+3GY+rrkjzTujdT2YiF2bNHN0D4g/1Khw8bWnJwC32fVWEcJ2A41F/K5OQdTrJNFAhZl/gCdFvLAmz/oal9hnEiFYjN4Q5OzUU9FJWvp4TnAgJUcIv1sNgjcoGhlq7xrru6Yi2q3PKOhUZLC/pX/uH+TGF6X1+5Xz6eiuSqdvbF9IWtVw3p/R9bwBAhCoDntLi1M+vd53YfWCCLJyELHaBffjeafx7d0VX4sRcod4nz2LWICgnWus9kHyi1br/tZ6dgqdKK5kUelBJCNxu1zGo9roQb679QbN3DhmHBZsJUkAHbWcz96LJ6N+DsXpQ+jjNleDAIGOJr9KltpEIwslYtDHsetwIuWWQKfe2YLjh4rNyE90aFTGY+3MvhI/4uaRXraiLaP7+wch+beLGIwmQTErbRW9DZpeMHbT9eiz0VNsXwuuNBA0AcYQKFVpFZClXaM6Ydkbyq8CJqZHEDVAIBWYZYCz0NmdxPliJa0kPi5OAjHjugAx7jPM8D9x3+vW HPSISZJb upAPzMI58ZRXlb4yCFNOMXkwov3kqaKfWLJSTGUX6qJnMIUjG5GBKkLqSjh2YMXLxfJ/N0tbjn8GXgq1U8SxBPfbaLTDJEEM0wGiHvTD5XzIkVdLFOy6T8EP6cwp/2FLGvVvnNv0h0yiI+kUITJ8sceTWVmxhJX6V7FzW/278vnxHumsYMKQKN5Gdwz1C6GiHEV+f+jh7a2dRIPFoke1+Sexs5hQc9BnGxrBK79z7EbSLX9jviLm4rfPfybCCTqaSFm9DglHVFkE9YMN/0Gco4fyARoGuWOkU0NmbnoJLZ2Lg/YPbind0gFI1d5HyNQyTO4aF70inl/Ib9oAv0py2RPwHG0BE2379Ya/+rjXwKWXQ1OBnbcjjXxIZ+6euNdvWXqJLG/mTm4/xWnRUnR4G8Kp2yIu0FvJFmSlWnaaFoVP5gQimyKfRPZB7114IKTkoUMPuAcAyiqvu4CMvE+oBvDAZZuchINb8jZs0BumQSp5kFVw= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: When a zone device folio is mapped as anonymous, folio_add_new_anon_rmap() increments MTHP_STAT_NR_ANON. The corresponding decrement lives in __free_pages_prepare() in page_alloc.c, but zone device folios are freed via free_zone_device_folio() which never calls __free_pages_prepare(). This causes nr_anon to remain permanently elevated after zone device folios are freed. Add the missing mod_mthp_stat() decrement to free_zone_device_folio() so that the counter is properly balanced. Fixes: 5d65c8d758f2 ("mm: count the number of anonymous THPs per size") Co-developed-by: David Hildenbrand Signed-off-by: David Hildenbrand Signed-off-by: Nico Pache --- mm/memremap.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/memremap.c b/mm/memremap.c index 81766d822400..accba23aef28 100644 --- a/mm/memremap.c +++ b/mm/memremap.c @@ -425,6 +425,7 @@ void free_zone_device_folio(struct folio *folio) mem_cgroup_uncharge(folio); if (folio_test_anon(folio)) { + mod_mthp_stat(folio_order(folio), MTHP_STAT_NR_ANON, -1); for (i = 0; i < nr; i++) __ClearPageAnonExclusive(folio_page(folio, i)); } -- 2.54.0