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Mon, 9 Jun 2025 09:22:06 +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 MD3lDL6nRmjJGAAAD6G6ig (envelope-from ); Mon, 09 Jun 2025 09:22:06 +0000 From: Oscar Salvador To: Andrew Morton Cc: David Hildenbrand , Vlastimil Babka , Jonathan Cameron , Harry Yoo , Rakie Kim , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Joshua Hahn , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Oscar Salvador Subject: [PATCH v6 09/10] mm,mempolicy: Use node-notifier instead of memory-notifier Date: Mon, 9 Jun 2025 11:21:46 +0200 Message-ID: <20250609092149.312114-10-osalvador@suse.de> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250609092149.312114-1-osalvador@suse.de> References: <20250609092149.312114-1-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: 8bit X-Spam-Flag: NO X-Spam-Score: -1.30 X-Spamd-Result: default: False [-1.30 / 50.00]; BAYES_HAM(-3.00)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-0.999]; MIME_GOOD(-0.10)[text/plain]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_CC(0.00)[redhat.com,suse.cz,huawei.com,oracle.com,sk.com,gmail.com,kvack.org,vger.kernel.org,suse.de]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid,suse.de:email,imap1.dmz-prg2.suse.org:helo,suse.cz:email]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; TAGGED_RCPT(0.00)[]; TO_DN_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_SEVEN(0.00)[11]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_TLS_ALL(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; R_RATELIMIT(0.00)[to_ip_from(RLsc83pr41xu6y1i6mw9yajrf5)]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FREEMAIL_ENVRCPT(0.00)[gmail.com] X-Spam-Level: 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 --- 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 = 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; } @@ -3845,7 +3842,7 @@ 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: -- 2.49.0