From patchwork Fri Mar 14 21:37:56 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nico Pache X-Patchwork-Id: 14017451 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A3EC92054E8 for ; Fri, 14 Mar 2025 21:38:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741988319; cv=none; b=RNtPsQfJIzpL/ndRmHC2r+YNMclK08uP+P7OxPyT+bGBVUC1wmRButR6OxzbdkM+NQZbV7NEU/GADedX8t4BugvRcdzQqwJ9B+iYKTAIKMzyOnikTnGo3cdbtI0j4fo0qqhE6smF8wbRkS88XrwcfVUkie1xQ9F9Q2SnAv5SI9w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741988319; c=relaxed/simple; bh=AzqFum6Agw13RjN3Fu1tKvuI6gP3XBpPLw2tmwLYzUE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mpD1vPq2Hi6BCNy8tMdFqJWsY6Mcm6wxT/qVw8uXU8oe8D507QYkfN3HsXvi7002DVQiLPF7agDoo3C45VZAGO0Kh6k/DMZo+sCLX/0e0meod/iKTYKA/UxITqR9XvQjacz/fYsEimXXMjNCExtcbeTMyxuFJxFUnrOVQLdAj3A= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=A9nT4vhK; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="A9nT4vhK" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741988316; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=vPsYu1/Zt9JxInUUfAbvJhaRjTUPwV0c8VAQrmxs/V8=; b=A9nT4vhKfJj3q8lQGPsvhX8OI8PnZInfBCF3sWHrkXxFfEwpogB0uH2iyBHtA4fkbRg12C 0M4Uh35PdUbUlAMGZ/Y+5k7yL4SLrfxQEOICh5EdnDK7y+g69scarrxpn8kBPIxrzsKFr+ SkHcmidXZGC+LZWdESjltunOe5+hfaY= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-511-Q0pkQj-lPNqdUoh8sMEMxQ-1; Fri, 14 Mar 2025 17:38:31 -0400 X-MC-Unique: Q0pkQj-lPNqdUoh8sMEMxQ-1 X-Mimecast-MFC-AGG-ID: Q0pkQj-lPNqdUoh8sMEMxQ_1741988308 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 5CFF81955E95; Fri, 14 Mar 2025 21:38:28 +0000 (UTC) Received: from h1.redhat.com (unknown [10.22.80.88]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id CD5E61943582; Fri, 14 Mar 2025 21:38:22 +0000 (UTC) From: Nico Pache To: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, virtualization@lists.linux.dev Cc: alexander.atanasov@virtuozzo.com, muchun.song@linux.dev, roman.gushchin@linux.dev, mhocko@kernel.org, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jgross@suse.com, sstabellini@kernel.org, oleksandr_tyshchenko@epam.com, akpm@linux-foundation.org, mst@redhat.com, david@redhat.com, yosry.ahmed@linux.dev, hannes@cmpxchg.org, nphamcs@gmail.com, chengming.zhou@linux.dev, kanchana.p.sridhar@intel.com, llong@redhat.com, shakeel.butt@linux.dev Subject: [PATCH v2 3/4] hv_balloon: update the NR_BALLOON_PAGES state Date: Fri, 14 Mar 2025 15:37:56 -0600 Message-ID: <20250314213757.244258-4-npache@redhat.com> In-Reply-To: <20250314213757.244258-1-npache@redhat.com> References: <20250314213757.244258-1-npache@redhat.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Update the NR_BALLOON_PAGES counter when pages are added to or removed from the Hyper-V balloon. Signed-off-by: Nico Pache Reviewed-by: Michael Kelley --- drivers/hv/hv_balloon.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c index fec2f18679e3..2b4080e51f97 100644 --- a/drivers/hv/hv_balloon.c +++ b/drivers/hv/hv_balloon.c @@ -1192,6 +1192,7 @@ static void free_balloon_pages(struct hv_dynmem_device *dm, __ClearPageOffline(pg); __free_page(pg); dm->num_pages_ballooned--; + mod_node_page_state(page_pgdat(pg), NR_BALLOON_PAGES, -1); adjust_managed_page_count(pg, 1); } } @@ -1221,6 +1222,7 @@ static unsigned int alloc_balloon_pages(struct hv_dynmem_device *dm, return i * alloc_unit; dm->num_pages_ballooned += alloc_unit; + mod_node_page_state(page_pgdat(pg), NR_BALLOON_PAGES, alloc_unit); /* * If we allocatted 2M pages; split them so we