iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Docs/mm/damon/design: remove the details for pageout as paddr doesn't use MADV_PAGEOUT

Browse Source 
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>
This commit is contained in:
Barry Song 2024-02-25 11:47:51 +13:00 committed by Andrew Morton
parent 8cc92a6793
commit ff0b5905a9
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/mm/damon/design.rst
View File

@ -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.