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mm/migrate: remove cpages-- in migrate_vma_finalize()

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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.

Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20200827190735.12752-1-rcampbell@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ralph Campbell 2020-10-13 16:58:39 -07:00 committed by Linus Torvalds
parent 67197a4f28
commit 4257889124
1 changed files with 0 additions and 1 deletions
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mm/migrate.c
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@ -3077,7 +3077,6 @@ void migrate_vma_finalize(struct migrate_vma *migrate)
remove_migration_ptes(page, newpage, false);
unlock_page(page);
migrate->cpages--;
if (is_zone_device_page(page))
put_page(page);