MGLRU evict_folios() isolates folios from the LRU without updating the NR_ISOLATED_ANON/FILE counters, unlike the legacy shrink_inactive_list() path. This causes compaction's too_many_isolated() check to under-count isolated pages when MGLRU reclaim is active. Add NR_ISOLATED counter updates in evict_folios(): increment after isolate_folios() and decrement after all retry passes complete, using the existing nr_isolated which holds the original isolated count. Link: https://lore.kernel.org/141901355a7d9e4bbca5c4840ae32ea5c65fe3b6.1791968227.git.zhuhui@kylinos.cn Link: https://lore.kernel.org/cover.1791968227.git.zhuhui@kylinos.cn Signed-off-by: Hui Zhu <zhuhui@kylinos.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Barry Song <baohua@kernel.org> Cc: Kairui Song <kasong@tencent.com> Cc: Qi Zheng <qi.zheng@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Yuanchu Xie <yuanchu@google.com> Cc: Wei Xu <weixugc@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: David Hildenbrand <david@kernel.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Lorenzo Stoakes <ljs@kernel.org>