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1f2d03cc53
reclaim_folio_list uses a dummy reclaim_stat and is not being used. To know the memory stat, add a new trace event. This is useful how how many pages are not reclaimed or why. This is an example: mm_vmscan_reclaim_pages: nid=0 nr_scanned=112 nr_reclaimed=112 nr_dirty=0 nr_writeback=0 nr_congested=0 nr_immediate=0 nr_activate_anon=0 nr_activate_file=0 nr_ref_keep=0 nr_unmap_fail=0 Currently reclaim_folio_list is only called by reclaim_pages, and reclaim_pages is used by damon and madvise. In the latest Android, reclaim_pages is also used by shmem to reclaim all pages in a address_space. [jaewon31.kim@samsung.com: use sc.nr_scanned rather than new counting] Link: https://lkml.kernel.org/r/20241016143227.961162-1-jaewon31.kim@samsung.com Link: https://lkml.kernel.org/r/20241011124928.1224813-1-jaewon31.kim@samsung.com Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Jaewon Kim <jaewon31.kim@samsung.com> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: SeongJae Park <sj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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