| From | Christoph Hellwig <> | Subject | [PATCH 04/25] mm: don't clear ->mapping in hmm_devmem_free | Date | Mon, 17 Jun 2019 14:27:12 +0200 |
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->mapping isn't even used by HMM users, and the field at the same offset in the zone_device part of the union is declared as pad. (Which btw is rather confusing, as DAX uses ->pgmap and ->mapping from two different sides of the union, but DAX doesn't use hmm_devmem_free).
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> --- mm/hmm.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/mm/hmm.c b/mm/hmm.c index dc251c51803a..64e788bb1211 100644 --- a/mm/hmm.c +++ b/mm/hmm.c @@ -1380,8 +1380,6 @@ static void hmm_devmem_free(struct page *page, void *data) { struct hmm_devmem *devmem = data; - page->mapping = NULL; - devmem->ops->free(devmem, page); } -- 2.20.1
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