mm/damon/lru_sort: support young page filters

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DAMON monitors access patterns at the region level, and hence there could
be some page level mismatches.  A few hot pages could be located in cold
regions, and vice versa.  Young page filters can be useful for doing
additional page level access checks before applying some DAMOS action.

DAMON_LRU_SORT is not using young page filters, though.  Add a parameter
for using it.

Link: https://lkml.kernel.org/r/20260113152717.70459-7-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

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SeongJae Park 2026-01-13 07:27:11 -08:00 • committed by Andrew Morton

parent 57d96d1ad2

commit 303dbb1f08

1 changed files with 41 additions and 0 deletions

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mm/damon/lru_sort.c

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