Commit cbbe107e authored by Ma Wupeng's avatar Ma Wupeng Committed by Wupeng Ma
Browse files

mm/mempolicy: check preferred_node rather than nodes for MPOL_PREFERRED 

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



--------------------------------

Commit b27abacc ("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 269fbe72 ("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: 52e5df72 ("mm/mempolicy: add MPOL_PREFERRED_MANY for multiple preferred nodes")
Signed-off-by: default avatarMa Wupeng <mawupeng1@huawei.com>
parent db10ed58

mm/mempolicy.c

+0 −2
Original line number Diff line number Diff line
@@ -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;