diff options
| author | Oscar Salvador <osalvador@suse.de> | 2025-06-16 15:51:52 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-07-13 16:38:16 -0700 |
| commit | cf0b61adf23f2cfaa360cd7d81d224c0bde7f413 (patch) | |
| tree | 00b15f81058ed466310d98fce29363a8be68072f /mm/mempolicy.c | |
| parent | 8e1bf051c524c6e95194cebf64a839285301d735 (diff) | |
mm,mempolicy: use node-notifier instead of memory-notifier
mempolicy is only concerned when a numa node changes its memory state,
because it needs to take this node into account for the auto-weighted
memory policy system. So stop using the memory notifier and use the new
numa node notifer instead.
Link: https://lkml.kernel.org/r/20250616135158.450136-10-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Rakie Kim <rakie.kim@sk.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Gregory Price <gourry@gourry.net>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index b0619d0020c9..1ff7b2174eb7 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -3788,20 +3788,17 @@ static int wi_node_notifier(struct notifier_block *nb, unsigned long action, void *data) { int err; - struct memory_notify *arg = data; - int nid = arg->status_change_nid; - - if (nid < 0) - return NOTIFY_OK; + struct node_notify *nn = data; + int nid = nn->nid; switch (action) { - case MEM_ONLINE: + case NODE_ADDED_FIRST_MEMORY: err = sysfs_wi_node_add(nid); if (err) pr_err("failed to add sysfs for node%d during hotplug: %d\n", nid, err); break; - case MEM_OFFLINE: + case NODE_REMOVED_LAST_MEMORY: sysfs_wi_node_delete(nid); break; } @@ -3840,7 +3837,7 @@ static int __init add_weighted_interleave_group(struct kobject *mempolicy_kobj) } } - hotplug_memory_notifier(wi_node_notifier, DEFAULT_CALLBACK_PRI); + hotplug_node_notifier(wi_node_notifier, DEFAULT_CALLBACK_PRI); return 0; err_cleanup_kobj: |