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| author | SeongJae Park <sj@kernel.org> | 2026-01-13 07:27:12 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-01-26 20:02:30 -0800 |
| commit | b36aefb866a12e2fbdc76f3cf0be4025b85dcb2c (patch) | |
| tree | 4a190a2a3d3d42d64d44189ecc9fc1f629494beb /Documentation/admin-guide | |
| parent | 303dbb1f08cfe844d095fe008bd4d04e89d447f1 (diff) | |
Docs/admin-guide/mm/damon/lru_sort: document filter_young_pages
Document the new DAMON_LRU_SORT parameter, filter_young_pages. It can be
used to use page level access re-check for the LRU sorting.
Link: https://lkml.kernel.org/r/20260113152717.70459-8-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Acked-by: wang lian <lianux.mm@gmail.com>
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>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/mm/damon/lru_sort.rst | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/admin-guide/mm/damon/lru_sort.rst b/Documentation/admin-guide/mm/damon/lru_sort.rst index 72a943202676..bb222a32aefd 100644 --- a/Documentation/admin-guide/mm/damon/lru_sort.rst +++ b/Documentation/admin-guide/mm/damon/lru_sort.rst @@ -79,6 +79,20 @@ of parametrs except ``enabled`` again. Once the re-reading is done, this parameter is set as ``N``. If invalid parameters are found while the re-reading, DAMON_LRU_SORT will be disabled. +filter_young_pages +------------------ + +Filter [non-]young pages accordingly for LRU [de]prioritizations. + +If this is set, check page level access (youngness) once again before each +LRU [de]prioritization operation. LRU prioritization operation is skipped +if the page has not accessed since the last check (not young). LRU +deprioritization operation is skipped if the page has accessed since the +last check (young). The feature is enabled or disabled if this parameter is +set as ``Y`` or ``N``, respectively. + +Disabled by default. + hot_thres_access_freq --------------------- |