From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 2DF1B1C6B9 for ; Fri, 13 Oct 2023 15:57:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="cBVelESK" Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DE6CDD for ; Fri, 13 Oct 2023 08:57:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697212670; 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=VdTOgUT9KIMzQnxrll+Ln7vU3lh7L6xf921vj9gXc+g=; b=cBVelESKvdlBs7lMAo373R32OAAsj0jPEz8aAgehFgUQ7hcgtpiiODOoR6eihRlvDxGt8W HSVSYKhQvDQ0LLt7Y9QWoI3lNcY8tNyyh6x0QbD0gdr2zNkIXVeKHUotPhXFlPKfKyv/Qx AZpJUOOXBCORn6swRxgSWnjc8nuB4Zc= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-690-sPJ3XQAXMnmyAp7uFZgrmw-1; Fri, 13 Oct 2023 11:57:43 -0400 X-MC-Unique: sPJ3XQAXMnmyAp7uFZgrmw-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 591821029F45; Fri, 13 Oct 2023 15:57:42 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.42.28.226]) by smtp.corp.redhat.com (Postfix) with ESMTP id B58C2492BD9; Fri, 13 Oct 2023 15:57:39 +0000 (UTC) From: David Howells To: Jeff Layton , Steve French Cc: David Howells , Matthew Wilcox , Marc Dionne , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Tom Talpey , Dominique Martinet , Ilya Dryomov , Christian Brauner , linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-cachefs@redhat.com Subject: [RFC PATCH 03/53] netfs: Note nonblockingness in the netfs_io_request struct Date: Fri, 13 Oct 2023 16:56:36 +0100 Message-ID: <20231013155727.2217781-4-dhowells@redhat.com> In-Reply-To: <20231013155727.2217781-1-dhowells@redhat.com> References: <20231013155727.2217781-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL, SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Allow O_NONBLOCK to be noted in the netfs_io_request struct. Also add a flag, NETFS_RREQ_BLOCKED to record if we did block. Signed-off-by: David Howells cc: Jeff Layton cc: linux-cachefs@redhat.com cc: linux-fsdevel@vger.kernel.org cc: linux-mm@kvack.org --- fs/netfs/objects.c | 2 ++ include/linux/netfs.h | 2 ++ 2 files changed, 4 insertions(+) diff --git a/fs/netfs/objects.c b/fs/netfs/objects.c index 85f428fc52e6..e41f9fc9bdd2 100644 --- a/fs/netfs/objects.c +++ b/fs/netfs/objects.c @@ -37,6 +37,8 @@ struct netfs_io_request *netfs_alloc_request(struct address_space *mapping, INIT_LIST_HEAD(&rreq->subrequests); refcount_set(&rreq->ref, 1); __set_bit(NETFS_RREQ_IN_PROGRESS, &rreq->flags); + if (file && file->f_flags & O_NONBLOCK) + __set_bit(NETFS_RREQ_NONBLOCK, &rreq->flags); if (rreq->netfs_ops->init_request) { ret = rreq->netfs_ops->init_request(rreq, file); if (ret < 0) { diff --git a/include/linux/netfs.h b/include/linux/netfs.h index 282511090ead..b92e982ac4a0 100644 --- a/include/linux/netfs.h +++ b/include/linux/netfs.h @@ -205,6 +205,8 @@ struct netfs_io_request { #define NETFS_RREQ_DONT_UNLOCK_FOLIOS 3 /* Don't unlock the folios on completion */ #define NETFS_RREQ_FAILED 4 /* The request failed */ #define NETFS_RREQ_IN_PROGRESS 5 /* Unlocked when the request completes */ +#define NETFS_RREQ_NONBLOCK 6 /* Don't block if possible (O_NONBLOCK) */ +#define NETFS_RREQ_BLOCKED 7 /* We blocked */ const struct netfs_request_ops *netfs_ops; };