The patch titled
Subject: mm: enable MADV_FREE for swapless system
has been added to the -mm tree. Its filename is
mm-enable-madv_free-for-swapless-system.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-enable-madv_free-for-swapless-system.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-enable-madv_free-for-swapless-system.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Shaohua Li <shli@xxxxxx>
Subject: mm: enable MADV_FREE for swapless system
Now MADV_FREE pages can be easily reclaimed even for swapless system. We
can safely enable MADV_FREE for all systems.
Link: http://lkml.kernel.org/r/155648585589300bfae1d45078e7aebb3d988b87.1487965799.git.shli@xxxxxx
Signed-off-by: Shaohua Li <shli@xxxxxx>
Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Acked-by: Hillf Danton <hillf.zj@xxxxxxxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/madvise.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff -puN mm/madvise.c~mm-enable-madv_free-for-swapless-system mm/madvise.c
--- a/mm/madvise.c~mm-enable-madv_free-for-swapless-system
+++ a/mm/madvise.c
@@ -612,13 +612,7 @@ madvise_vma(struct vm_area_struct *vma,
case MADV_WILLNEED:
return madvise_willneed(vma, prev, start, end);
case MADV_FREE:
- /*
- * XXX: In this implementation, MADV_FREE works like
- * MADV_DONTNEED on swapless system or full swap.
- */
- if (get_nr_swap_pages() > 0)
- return madvise_free(vma, prev, start, end);
- /* passthrough */
+ return madvise_free(vma, prev, start, end);
case MADV_DONTNEED:
return madvise_dontneed(vma, prev, start, end);
default:
_
Patches currently in -mm which might be from shli@xxxxxx are
mm-delete-unnecessary-ttu_-flags.patch
mm-dont-assume-anonymous-pages-have-swapbacked-flag.patch
mm-move-madv_free-pages-into-lru_inactive_file-list.patch
mm-reclaim-madv_free-pages.patch
mm-enable-madv_free-for-swapless-system.patch
proc-show-madv_free-pages-info-in-smaps.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
