From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D850DC61DD8 for ; Thu, 12 Nov 2020 13:38:58 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5DD6F22249 for ; Thu, 12 Nov 2020 13:38:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="JSEA0Ost" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5DD6F22249 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=virtualization-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id CE3ED87796; Thu, 12 Nov 2020 13:38:57 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id y0L2Zge61lmW; Thu, 12 Nov 2020 13:38:57 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 41B68877AA; Thu, 12 Nov 2020 13:38:57 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 2BD91C088B; Thu, 12 Nov 2020 13:38:57 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 691E1C016F for ; Thu, 12 Nov 2020 13:38:55 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 1E3A22010F for ; Thu, 12 Nov 2020 13:38:55 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id eOUkURucTD1m for ; Thu, 12 Nov 2020 13:38:54 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by silver.osuosl.org (Postfix) with ESMTPS id D7AFC2E1B9 for ; Thu, 12 Nov 2020 13:38:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605188332; 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=whRB7fqvEtHYEsoDQkuEHgauodp8esw7rtmEk6rZXVc=; b=JSEA0OstQUt+UHV/s5TSlGU6Xh0310ZBx9EW4eTtQg82OjT0JkSB8mXQQs5wVl4GM+7jHP 4XvFAJO4eztQUro8IiSxudMLAxA+V6Ra0Atxjc9LEN0PN0ttice05dxjg4gZasTMW5qOEt fBibG2vb/UL1xKTIOo+QNrD3oBA5pno= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-161-0Z8WCwcuNXyAJtPJYsPZ1A-1; Thu, 12 Nov 2020 08:38:50 -0500 X-MC-Unique: 0Z8WCwcuNXyAJtPJYsPZ1A-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 742FA107ACF8; Thu, 12 Nov 2020 13:38:49 +0000 (UTC) Received: from t480s.redhat.com (ovpn-115-61.ams2.redhat.com [10.36.115.61]) by smtp.corp.redhat.com (Postfix) with ESMTP id AAB4955765; Thu, 12 Nov 2020 13:38:47 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Subject: [PATCH v2 08/29] virtio-mem: factor out fake-offlining into virtio_mem_fake_offline() Date: Thu, 12 Nov 2020 14:37:54 +0100 Message-Id: <20201112133815.13332-9-david@redhat.com> In-Reply-To: <20201112133815.13332-1-david@redhat.com> References: <20201112133815.13332-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Cc: Pankaj Gupta , Wei Yang , "Michael S . Tsirkin" , virtualization@lists.linux-foundation.org, linux-mm@kvack.org X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" ... which now matches virtio_mem_fake_online(). We'll reuse this functionality soon. Reviewed-by: Wei Yang Reviewed-by: Pankaj Gupta Cc: "Michael S. Tsirkin" Cc: Jason Wang Cc: Pankaj Gupta Signed-off-by: David Hildenbrand --- drivers/virtio/virtio_mem.c | 34 ++++++++++++++++++++++++---------- 1 file changed, 24 insertions(+), 10 deletions(-) diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c index 4742497feff0..fedfea27967e 100644 --- a/drivers/virtio/virtio_mem.c +++ b/drivers/virtio/virtio_mem.c @@ -793,6 +793,27 @@ static void virtio_mem_fake_online(unsigned long pfn, unsigned long nr_pages) } } +/* + * Try to allocate a range, marking pages fake-offline, effectively + * fake-offlining them. + */ +static int virtio_mem_fake_offline(unsigned long pfn, unsigned long nr_pages) +{ + int rc; + + rc = alloc_contig_range(pfn, pfn + nr_pages, MIGRATE_MOVABLE, + GFP_KERNEL); + if (rc == -ENOMEM) + /* whoops, out of memory */ + return rc; + if (rc) + return -EBUSY; + + virtio_mem_set_fake_offline(pfn, nr_pages, true); + adjust_managed_page_count(pfn_to_page(pfn), -nr_pages); + return 0; +} + static void virtio_mem_online_page_cb(struct page *page, unsigned int order) { const unsigned long addr = page_to_phys(page); @@ -1328,17 +1349,10 @@ static int virtio_mem_mb_unplug_sb_online(struct virtio_mem *vm, start_pfn = PFN_DOWN(virtio_mem_mb_id_to_phys(mb_id) + sb_id * vm->subblock_size); - rc = alloc_contig_range(start_pfn, start_pfn + nr_pages, - MIGRATE_MOVABLE, GFP_KERNEL); - if (rc == -ENOMEM) - /* whoops, out of memory */ - return rc; - if (rc) - return -EBUSY; - /* Mark it as fake-offline before unplugging it */ - virtio_mem_set_fake_offline(start_pfn, nr_pages, true); - adjust_managed_page_count(pfn_to_page(start_pfn), -nr_pages); + rc = virtio_mem_fake_offline(start_pfn, nr_pages); + if (rc) + return rc; /* Try to unplug the allocated memory */ rc = virtio_mem_mb_unplug_sb(vm, mb_id, sb_id, count); -- 2.26.2 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization