The patch titled
Subject: mm: remove SWAP_MLOCK check for SWAP_SUCCESS in ttu
has been added to the -mm tree. Its filename is
mm-remove-swap_mlock-check-for-swap_success-in-ttu.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-remove-swap_mlock-check-for-swap_success-in-ttu.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-remove-swap_mlock-check-for-swap_success-in-ttu.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: Minchan Kim <minchan@xxxxxxxxxx>
Subject: mm: remove SWAP_MLOCK check for SWAP_SUCCESS in ttu
If the page is mapped and rescue in try_to_unmap_one, page_mapcount(page)
== 0 cannot be true so page_mapcount check in try_to_unmap is enough to
return SWAP_SUCCESS. IOW, SWAP_MLOCK check is redundant so remove it.
Link: http://lkml.kernel.org/r/1489555493-14659-4-git-send-email-minchan@xxxxxxxxxx
Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Anshuman Khandual <khandual@xxxxxxxxxxxxxxxxxx>
Cc: Hillf Danton <hillf.zj@xxxxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/rmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/rmap.c~mm-remove-swap_mlock-check-for-swap_success-in-ttu mm/rmap.c
--- a/mm/rmap.c~mm-remove-swap_mlock-check-for-swap_success-in-ttu
+++ a/mm/rmap.c
@@ -1535,7 +1535,7 @@ int try_to_unmap(struct page *page, enum
else
ret = rmap_walk(page, &rwc);
- if (ret != SWAP_MLOCK && !page_mapcount(page))
+ if (!page_mapcount(page))
ret = SWAP_SUCCESS;
return ret;
}
_
Patches currently in -mm which might be from minchan@xxxxxxxxxx are
mm-reclaim-madv_free-pages-fix.patch
mm-fix-lazyfree-bug-on-check-in-try_to_unmap_one.patch
mm-fix-lazyfree-bug-on-check-in-try_to_unmap_one-fix.patch
mm-do-not-use-double-negation-for-testing-page-flags.patch
mm-remove-unncessary-ret-in-page_referenced.patch
mm-remove-swap_dirty-in-ttu.patch
mm-remove-swap_mlock-check-for-swap_success-in-ttu.patch
mm-make-the-try_to_munlock-void-function.patch
mm-remove-swap_mlock-in-ttu.patch
mm-remove-swap_again-in-ttu.patch
mm-make-ttus-return-boolean.patch
mm-make-rmap_walk-void-function.patch
mm-make-rmap_one-boolean-function.patch
mm-remove-swap_.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
