The patch titled
Subject: mm/mempolicy: use policy_node helper with MPOL_PREFERRED_MANY
has been added to the -mm tree. Its filename is
mm-mempolicy-use-policy_node-helper-with-mpol_preferred_many.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-mempolicy-use-policy_node-helper-with-mpol_preferred_many.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-mempolicy-use-policy_node-helper-with-mpol_preferred_many.patch
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------------------------------------------------------
From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx>
Subject: mm/mempolicy: use policy_node helper with MPOL_PREFERRED_MANY
Patch series "mm: add new syscall set_mempolicy_home_node", v6.
This patch (of 3):
A followup patch will enable setting a home node with MPOL_PREFERRED_MANY
memory policy. To facilitate that switch to using policy_node helper.
There is no functional change in this patch.
Link: https://lkml.kernel.org/r/20211202123810.267175-1-aneesh.kumar@xxxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20211202123810.267175-2-aneesh.kumar@xxxxxxxxxxxxx
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Ben Widawsky <ben.widawsky@xxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Feng Tang <feng.tang@xxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Huang Ying <ying.huang@xxxxxxxxx>
Cc: <linux-api@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mempolicy.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/mm/mempolicy.c~mm-mempolicy-use-policy_node-helper-with-mpol_preferred_many
+++ a/mm/mempolicy.c
@@ -2062,7 +2062,7 @@ static struct page *alloc_pages_preferre
preferred_gfp &= ~(__GFP_DIRECT_RECLAIM | __GFP_NOFAIL);
page = __alloc_pages(preferred_gfp, order, nid, &pol->nodes);
if (!page)
- page = __alloc_pages(gfp, order, numa_node_id(), NULL);
+ page = __alloc_pages(gfp, order, nid, NULL);
return page;
}
@@ -2104,6 +2104,7 @@ struct page *alloc_pages_vma(gfp_t gfp,
}
if (pol->mode == MPOL_PREFERRED_MANY) {
+ node = policy_node(gfp, pol, node);
page = alloc_pages_preferred_many(gfp, order, node, pol);
mpol_cond_put(pol);
goto out;
@@ -2188,7 +2189,7 @@ struct page *alloc_pages(gfp_t gfp, unsi
page = alloc_page_interleave(gfp, order, interleave_nodes(pol));
else if (pol->mode == MPOL_PREFERRED_MANY)
page = alloc_pages_preferred_many(gfp, order,
- numa_node_id(), pol);
+ policy_node(gfp, pol, numa_node_id()), pol);
else
page = __alloc_pages(gfp, order,
policy_node(gfp, pol, numa_node_id()),
_
Patches currently in -mm which might be from aneesh.kumar@xxxxxxxxxxxxx are
mm-mempolicy-use-policy_node-helper-with-mpol_preferred_many.patch
mm-mempolicy-add-set_mempolicy_home_node-syscall.patch
mm-mempolicy-wire-up-syscall-set_mempolicy_home_node.patch
