The patch titled
Subject: mm-swap-fix-release_pages-when-releasing-devmap-pages-v3
has been added to the -mm tree. Its filename is
mm-swap-fix-release_pages-when-releasing-devmap-pages-v3.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-swap-fix-release_pages-when-releasing-devmap-pages-v3.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-swap-fix-release_pages-when-releasing-devmap-pages-v3.patch
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------------------------------------------------------
From: Ira Weiny <ira.weiny@xxxxxxxxx>
Subject: mm-swap-fix-release_pages-when-releasing-devmap-pages-v3
Update changelog for more clarity as requested by Michal
Update comment WRT "failing" of put_devmap_managed_page()
Link: http://lkml.kernel.org/r/20190604164813.31514-1-ira.weiny@xxxxxxxxx
Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>
Cc: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Reviewed-by: John Hubbard <jhubbard@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/swap.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/mm/swap.c~mm-swap-fix-release_pages-when-releasing-devmap-pages-v3
+++ a/mm/swap.c
@@ -747,8 +747,10 @@ void release_pages(struct page **pages,
locked_pgdat = NULL;
}
/*
- * zone-device-pages can still fail here and will
- * therefore need put_page_testzero()
+ * Not all zone-device-pages require special
+ * processing. Those pages return 'false' from
+ * put_devmap_managed_page() expecting a call to
+ * put_page_testzero()
*/
if (put_devmap_managed_page(page))
continue;
_
Patches currently in -mm which might be from ira.weiny@xxxxxxxxx are
mm-swap-fix-release_pages-when-releasing-devmap-pages.patch
mm-swap-fix-release_pages-when-releasing-devmap-pages-v2.patch
mm-swap-fix-release_pages-when-releasing-devmap-pages-v3.patch
