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Message-Id: <20250628165144.55528-8-sj@kernel.org> Date: Sat, 28 Jun 2025 09:51:40 -0700 From: SeongJae Park <sj@...nel.org> To: Cc: SeongJae Park <sj@...nel.org>, Andrew Morton <akpm@...ux-foundation.org>, Jonathan Corbet <corbet@....net>, damon@...ts.linux.dev, kernel-team@...a.com, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org Subject: [RFC PATCH 07/11] 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. Signed-off-by: SeongJae Park <sj@...nel.org> --- Documentation/admin-guide/mm/damon/lru_sort.rst | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/Documentation/admin-guide/mm/damon/lru_sort.rst b/Documentation/admin-guide/mm/damon/lru_sort.rst index 7b0775d281b4..18fa73a59f62 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 [none-]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 --------------------- -- 2.39.5
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