The patch titled
Subject: mm/migrate: remove cpages-- in migrate_vma_finalize()
has been added to the -mm tree. Its filename is
mm-migrate-remove-cpages-in-migrate_vma_finalize.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-migrate-remove-cpages-in-migrate_vma_finalize.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-migrate-remove-cpages-in-migrate_vma_finalize.patch
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------------------------------------------------------
From: Ralph Campbell <rcampbell@xxxxxxxxxx>
Subject: mm/migrate: remove cpages-- in migrate_vma_finalize()
The variable struct migrate_vma->cpages is only used in
migrate_vma_setup(). There is no need to decrement it in
migrate_vma_finalize() since it is never checked.
Link: http://lkml.kernel.org/r/20200827190735.12752-1-rcampbell@xxxxxxxxxx
Signed-off-by: Ralph Campbell <rcampbell@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxxxx>
Cc: Jerome Glisse <jglisse@xxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/migrate.c | 1 -
1 file changed, 1 deletion(-)
--- a/mm/migrate.c~mm-migrate-remove-cpages-in-migrate_vma_finalize
+++ a/mm/migrate.c
@@ -3077,7 +3077,6 @@ void migrate_vma_finalize(struct migrate
remove_migration_ptes(page, newpage, false);
unlock_page(page);
- migrate->cpages--;
if (is_zone_device_page(page))
put_page(page);
_
Patches currently in -mm which might be from rcampbell@xxxxxxxxxx are
mm-migrate-remove-cpages-in-migrate_vma_finalize.patch
mm-migrate-remove-obsolete-comment-about-device-public.patch
