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Tue, 09 Feb 2021 14:05:28 -0500 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-121-8VkxbY-cMA2Q-SpmnMbATA-1; Tue, 09 Feb 2021 14:05:17 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4C04A803F4A for ; Tue, 9 Feb 2021 19:05:16 +0000 (UTC) Received: from dgilbert-t580.localhost (ovpn-112-66.ams2.redhat.com [10.36.112.66]) by smtp.corp.redhat.com (Postfix) with ESMTP id 393E960C04; Tue, 9 Feb 2021 19:04:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1612897519; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2HE8LrddnxGky44SJcOH9gN83cUyYp9owH4SNW0DxjQ=; b=bEbA3POd0RxlCHtB2a37cD94WUiOKZ0hgWqj6r73GZdUuGTtFn7Ww7aYaVjmIgQp4Rs6Mz ehVIkViZ8jrycwjH70HzByQ2g8mM1GyKVYdDp/tPMOSbKTAugHdxrRl/qccssnOFtAH235 OA6HIxwbOFUc6RXdPanJO6msifQNGxI= X-MC-Unique: 8VkxbY-cMA2Q-SpmnMbATA-1 From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, vgoyal@redhat.com, stefanha@redhat.com, virtio-fs@redhat.com, marcandre.lureau@redhat.com, mst@redhat.com Subject: [PATCH 13/24] DAX: virtiofsd: Make lo_removemapping() work Date: Tue, 9 Feb 2021 19:02:13 +0000 Message-Id: <20210209190224.62827-14-dgilbert@redhat.com> In-Reply-To: <20210209190224.62827-1-dgilbert@redhat.com> References: <20210209190224.62827-1-dgilbert@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=216.205.24.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -33 X-Spam_score: -3.4 X-Spam_bar: --- X-Spam_report: (-3.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.57, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" From: Vivek Goyal Let guest pass in the offset in dax window a mapping is currently mapped at and needs to be removed. Vivek added the initial support to remove single mapping and later Peng added patch to support removing multiple mappings in single command. Signed-off-by: Vivek Goyal Signed-off-by: Peng Tao Reviewed-by: Stefan Hajnoczi --- tools/virtiofsd/passthrough_ll.c | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough= _ll.c index 0493f00756..971ff2b2ea 100644 --- a/tools/virtiofsd/passthrough_ll.c +++ b/tools/virtiofsd/passthrough_ll.c @@ -3023,8 +3023,30 @@ static void lo_removemapping(fuse_req_t req, struct = fuse_session *se, fuse_ino_t ino, unsigned num, struct fuse_removemapping_one *argp) { - /* TODO */ - fuse_reply_err(req, ENOSYS); + VhostUserFSSlaveMsg msg =3D { 0 }; + int ret =3D 0; + + for (int i =3D 0; num > 0; i++, argp++) { + msg.len[i] =3D argp->len; + msg.c_offset[i] =3D argp->moffset; + + if (--num =3D=3D 0 || i =3D=3D VHOST_USER_FS_SLAVE_ENTRIES - 1) { + ret =3D fuse_virtio_unmap(se, &msg); + if (ret < 0) { + fuse_log(FUSE_LOG_ERR, + "%s: unmap over virtio failed " + "(offset=3D0x%lx, len=3D0x%lx). err=3D%d\n", + __func__, argp->moffset, argp->len, ret); + break; + } + if (num > 0) { + i =3D 0; + memset(&msg, 0, sizeof(msg)); + } + } + } + + fuse_reply_err(req, -ret); } =20 static struct fuse_lowlevel_ops lo_oper =3D { --=20 2.29.2