From: Barry Song Date: Sat, 24 Feb 2024 22:47:51 +0000 (+1300) Subject: Docs/mm/damon/design: remove the details for pageout as paddr doesn't use MADV_PAGEOUT X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ff0b5905a9c9712f36fb7f9dd1be17564483b5d4;p=linux.git Docs/mm/damon/design: remove the details for pageout as paddr doesn't use MADV_PAGEOUT The doc needs a fix. As only in the case of virtual address, we are calling madvise() with MADV_PAGEOUT. But in the case of physical address, we are calling reclaim_pages() directly. MADV_PAGEOUT on virtual address is much more aggresive to reclaim memory compared to reclaim_pages() on paddr region. This patch removes the details so that the description can apply to both cases. And we don't need to couple with the implementation details. Link: https://lkml.kernel.org/r/20240224224751.4673-1-21cnbao@gmail.com Signed-off-by: Barry Song Reviewed-by: SeongJae Park Cc: Minchan Kim Cc: Michal Hocko Cc: Johannes Weiner Signed-off-by: Andrew Morton --- diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst index 8c89d26f0baa1..5620aab9b3850 100644 --- a/Documentation/mm/damon/design.rst +++ b/Documentation/mm/damon/design.rst @@ -315,7 +315,7 @@ that supports each action are as below. Supported by ``vaddr`` and ``fvaddr`` operations set. - ``cold``: Call ``madvise()`` for the region with ``MADV_COLD``. Supported by ``vaddr`` and ``fvaddr`` operations set. - - ``pageout``: Call ``madvise()`` for the region with ``MADV_PAGEOUT``. + - ``pageout``: Reclaim the region. Supported by ``vaddr``, ``fvaddr`` and ``paddr`` operations set. - ``hugepage``: Call ``madvise()`` for the region with ``MADV_HUGEPAGE``. Supported by ``vaddr`` and ``fvaddr`` operations set.