Commit 7d082987 authored Mar 04, 2020 by Jason Gunthorpe

mm/hmm: add missing pfns set to hmm_vma_walk_pmd()



All success exit paths from the walker functions must set the pfns array.

A migration entry with no required fault is a HMM_PFN_NONE return, just
like the pte case.

Fixes: d08faca0 ("mm/hmm: properly handle migration pmd")
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

parent 05fc1df9

mm/hmm.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -402,7 +402,7 @@ again:
		pmd_migration_entry_wait(walk->mm, pmdp);
		return -EBUSY;
		}
		return 0;
		return hmm_pfns_fill(start, end, range, HMM_PFN_NONE);
		} else if (!pmd_present(pmd))
		return hmm_pfns_fill(start, end, range, HMM_PFN_ERROR);

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