The patch titled
Subject: mm: use for_each_online_node and node_online instead of open coding
has been added to the -mm tree. Its filename is
mm-using-for_each_online_node-and-node_online-instead-of-open-coding.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-using-for_each_online_node-and-node_online-instead-of-open-coding.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-using-for_each_online_node-and-node_online-instead-of-open-coding.patch
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------------------------------------------------------
From: Peng Liu <liupeng256@xxxxxxxxxx>
Subject: mm: use for_each_online_node and node_online instead of open coding
Use more generic functions to deal with issues related to online nodes.
The changes will make the code simplified.
Link: https://lkml.kernel.org/r/20220429030218.644635-1-liupeng256@xxxxxxxxxx
Signed-off-by: Peng Liu <liupeng256@xxxxxxxxxx>
Suggested-by: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Suggested-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/ia64/kernel/uncached.c | 2 +-
mm/hugetlb.c | 4 ++--
mm/page_ext.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
--- a/arch/ia64/kernel/uncached.c~mm-using-for_each_online_node-and-node_online-instead-of-open-coding
+++ a/arch/ia64/kernel/uncached.c
@@ -261,7 +261,7 @@ static int __init uncached_init(void)
{
int nid;
- for_each_node_state(nid, N_ONLINE) {
+ for_each_online_node(nid) {
uncached_pools[nid].pool = gen_pool_create(PAGE_SHIFT, nid);
mutex_init(&uncached_pools[nid].add_chunk_mutex);
}
--- a/mm/hugetlb.c~mm-using-for_each_online_node-and-node_online-instead-of-open-coding
+++ a/mm/hugetlb.c
@@ -7026,7 +7026,7 @@ void __init hugetlb_cma_reserve(int orde
if (hugetlb_cma_size_in_node[nid] == 0)
continue;
- if (!node_state(nid, N_ONLINE)) {
+ if (!node_online(nid)) {
pr_warn("hugetlb_cma: invalid node %d specified\n", nid);
hugetlb_cma_size -= hugetlb_cma_size_in_node[nid];
hugetlb_cma_size_in_node[nid] = 0;
@@ -7065,7 +7065,7 @@ void __init hugetlb_cma_reserve(int orde
}
reserved = 0;
- for_each_node_state(nid, N_ONLINE) {
+ for_each_online_node(nid) {
int res;
char name[CMA_MAX_NAME];
--- a/mm/page_ext.c~mm-using-for_each_online_node-and-node_online-instead-of-open-coding
+++ a/mm/page_ext.c
@@ -320,7 +320,7 @@ static int __meminit online_page_ext(uns
* online__pages(), and start_pfn should exist.
*/
nid = pfn_to_nid(start_pfn);
- VM_BUG_ON(!node_state(nid, N_ONLINE));
+ VM_BUG_ON(!node_online(nid));
}
for (pfn = start; !fail && pfn < end; pfn += PAGES_PER_SECTION)
_
Patches currently in -mm which might be from liupeng256@xxxxxxxxxx are
hugetlb-fix-wrong-use-of-nr_online_nodes.patch
hugetlb-fix-wrong-use-of-nr_online_nodes-v4.patch
hugetlb-fix-hugepages_setup-when-deal-with-pernode.patch
hugetlb-fix-return-value-of-__setup-handlers.patch
mm-using-for_each_online_node-and-node_online-instead-of-open-coding.patch
