From patchwork Fri Oct 13 16:03:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 13421339 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 50F291CAB9 for ; Fri, 13 Oct 2023 16:05:03 +0000 (UTC) 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="ByU3V2UQ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697213102; 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=od1nOg0d5KcBROFP/nmLvEU1/p7aWHgHI8UqWVAfctw=; b=ByU3V2UQiaAEix+KazqoRtAZSOgIUnB56IS4zSC0hbRAyrsk/pxZ0sxdwgyuRc/8AnE3AW pJ6r5KdNL987ypW9IB85IgISyAKl/XdL41PCnItKC/+5HWAMXif17vhkl8s6rqLqcJnXsx PIdEltTYF4szkvh+FQ1zUeHscEXJ4Zg= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-378--MYQi_f-M-Sjm_LBP-JE9A-1; Fri, 13 Oct 2023 12:04:55 -0400 X-MC-Unique: -MYQi_f-M-Sjm_LBP-JE9A-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (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 BB9F53C40C2F; Fri, 13 Oct 2023 16:04:54 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.42.28.226]) by smtp.corp.redhat.com (Postfix) with ESMTP id 253CB1C06535; Fri, 13 Oct 2023 16:04:52 +0000 (UTC) From: David Howells To: Jeff Layton , Steve French Cc: David Howells , Matthew Wilcox , Marc Dionne , Paulo Alcantara , 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 08/53] netfs: Add rsize to netfs_io_request Date: Fri, 13 Oct 2023 17:03:37 +0100 Message-ID: <20231013160423.2218093-9-dhowells@redhat.com> In-Reply-To: <20231013160423.2218093-1-dhowells@redhat.com> References: <20231013160423.2218093-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: v9fs@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 Add an rsize parameter to netfs_io_request to be filled in by the network filesystem when the request is initialised. This indicates the maximum size of a read request that the netfs will honour in that region. 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/afs/file.c | 1 + fs/ceph/addr.c | 2 ++ include/linux/netfs.h | 1 + 3 files changed, 4 insertions(+) diff --git a/fs/afs/file.c b/fs/afs/file.c index 3fea5cd8ef13..3d2e1913ea27 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -360,6 +360,7 @@ static int afs_symlink_read_folio(struct file *file, struct folio *folio) static int afs_init_request(struct netfs_io_request *rreq, struct file *file) { rreq->netfs_priv = key_get(afs_file_key(file)); + rreq->rsize = 4 * 1024 * 1024; return 0; } diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index ced19ff08988..92a5ddcd9a76 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -419,6 +419,8 @@ static int ceph_init_request(struct netfs_io_request *rreq, struct file *file) struct ceph_netfs_request_data *priv; int ret = 0; + rreq->rsize = 1024 * 1024; + if (rreq->origin != NETFS_READAHEAD) return 0; diff --git a/include/linux/netfs.h b/include/linux/netfs.h index daa431c4148d..02e888c170da 100644 --- a/include/linux/netfs.h +++ b/include/linux/netfs.h @@ -188,6 +188,7 @@ struct netfs_io_request { struct list_head subrequests; /* Contributory I/O operations */ void *netfs_priv; /* Private data for the netfs */ unsigned int debug_id; + unsigned int rsize; /* Maximum read size (0 for none) */ atomic_t nr_outstanding; /* Number of ops in progress */ atomic_t nr_copy_ops; /* Number of copy-to-cache ops in progress */ size_t submitted; /* Amount submitted for I/O so far */