After commit 6b0dfabb3555 ("fs: Remove aops->writepage"), we no longer attempt to write back filesystem folios in pageout(), and only tmpfs/shmem folios and anonymous swapcache folios can be written back. Therefore, we should also filter out the dirty filesystem folios for node_reclaim() to avoid unnecessary LRU scans. Signed-off-by: Baolin Wang --- mm/vmscan.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index aadbee50a851..f347865edc70 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -7601,9 +7601,11 @@ static unsigned long node_pagecache_reclaimable(struct pglist_data *pgdat) else nr_pagecache_reclaimable = node_unmapped_file_pages(pgdat); - /* If we can't clean pages, remove dirty pages from consideration */ - if (!(node_reclaim_mode & RECLAIM_WRITE)) - delta += node_page_state(pgdat, NR_FILE_DIRTY); + /* + * Since we can't clean folios through reclaim, remove dirty file + * folios from consideration. + */ + delta += node_page_state(pgdat, NR_FILE_DIRTY); /* Watch for any possible underflows due to delta */ if (unlikely(delta > nr_pagecache_reclaimable)) -- 2.43.7