From: Ma Wupeng mawupeng1@huawei.com

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8O41A

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Commit b27abaccf8e8 ("mm/mempolicy: add MPOL_PREFERRED_MANY for multiple preferred nodes") add MPOL_PREFERRED_MANY which will return -1 if page node id is not in nodes. However this is useful for linux-v5.15 since commit 269fbe72cded ("mm/mempolicy: use unified 'nodes' for bind/interleave/prefer policies") already unify bind/prefer policies. While this patch does not exists during backport. To fix this, drop checking v.nodes for prefer.

Fixes: 52e5df72c58e ("mm/mempolicy: add MPOL_PREFERRED_MANY for multiple preferred nodes") Signed-off-by: Ma Wupeng mawupeng1@huawei.com --- mm/mempolicy.c | 2 -- 1 file changed, 2 deletions(-)

diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 659c6f0d146e..c99a5843429a 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2701,8 +2701,6 @@ int mpol_misplaced(struct page *page, struct vm_area_struct *vma, unsigned long break;

case MPOL_PREFERRED: - if (node_isset(curnid, pol->v.nodes)) - goto out; polnid = pol->v.preferred_node; break;