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Mon, 16 Jun 2025 13:52:15 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id IC8vO48hUGhHLwAAD6G6ig (envelope-from ); Mon, 16 Jun 2025 13:52:15 +0000 From: Oscar Salvador To: Andrew Morton Cc: David Hildenbrand , Vlastimil Babka , Jonathan Cameron , Harry Yoo , Rakie Kim , Hyeonggon Yoo <42.hyeyoo@gmail.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Oscar Salvador Subject: [PATCH v7 09/11] mm,mempolicy: Use node-notifier instead of memory-notifier Date: Mon, 16 Jun 2025 15:51:52 +0200 Message-ID: <20250616135158.450136-10-osalvador@suse.de> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250616135158.450136-1-osalvador@suse.de> References: <20250616135158.450136-1-osalvador@suse.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Queue-Id: 4459B1F79A X-Rspamd-Action: no action X-Spam-Flag: NO X-Spamd-Result: default: False [-1.51 / 50.00]; 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RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; RCVD_VIA_SMTP_AUTH(0.00)[]; DKIM_TRACE(0.00)[suse.de:+]; TAGGED_RCPT(0.00)[]; R_RATELIMIT(0.00)[to_ip_from(RL13d73xi3shrbuzu7ftfs459h)]; RSPAMD_EMAILBL_FAIL(0.00)[jonathan.cameron.huawei.com:server fail,harry.yoo.oracle.com:query timed out,david.redhat.com:query timed out,vbabka.suse.cz:query timed out,osalvador.suse.de:query timed out,rakie.kim.sk.com:query timed out]; FREEMAIL_ENVRCPT(0.00)[gmail.com] X-Spam-Score: -1.51 X-Spam-Level: Content-Type: text/plain; charset="utf-8" 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. Signed-off-by: Oscar Salvador Reviewed-by: Jonathan Cameron Reviewed-by: Harry Yoo Reviewed-by: Vlastimil Babka Reviewed-by: Rakie Kim Acked-by: David Hildenbrand --- mm/mempolicy.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 72fd72e156b1..693319c2652d 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -3793,20 +3793,17 @@ static int wi_node_notifier(struct notifier_block *= nb, unsigned long action, void *data) { int err; - struct memory_notify *arg =3D data; - int nid =3D arg->status_change_nid; - - if (nid < 0) - return NOTIFY_OK; + struct node_notify *nn =3D data; + int nid =3D nn->nid; =20 switch (action) { - case MEM_ONLINE: + case NODE_ADDED_FIRST_MEMORY: err =3D 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; } @@ -3845,7 +3842,7 @@ static int __init add_weighted_interleave_group(struc= t kobject *mempolicy_kobj) } } =20 - hotplug_memory_notifier(wi_node_notifier, DEFAULT_CALLBACK_PRI); + hotplug_node_notifier(wi_node_notifier, DEFAULT_CALLBACK_PRI); return 0; =20 err_cleanup_kobj: --=20 2.49.0