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authorBarry Song <v-songbaohua@oppo.com>2024-02-25 01:47:51 +0300
committerAndrew Morton <akpm@linux-foundation.org>2024-03-05 04:01:17 +0300
commitff0b5905a9c9712f36fb7f9dd1be17564483b5d4 (patch)
tree1dfc9e41ea5fe5df41cc94cf10f49e9e31000cbc /Documentation/mm
parent8cc92a67932febc3f84cf6b3c7d08f27a1b2ebc3 (diff)
downloadlinux-ff0b5905a9c9712f36fb7f9dd1be17564483b5d4.tar.xz
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 <v-songbaohua@oppo.com> Reviewed-by: SeongJae Park <sj@kernel.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/mm')
-rw-r--r--Documentation/mm/damon/design.rst2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst
index 8c89d26f0baa..5620aab9b385 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.