From mboxrd@z Thu Jan 1 00:00:00 1970 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 8137D346E7A for ; Mon, 27 Apr 2026 15:30:26 +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=1777303828; cv=none; b=k0Rf/vkCXn3lhNZ4mocnQhWJFrf/G6m3Qy0CAWPLa9CkMBvnpvILZDqS9MPOHZWl7M6HEPm4EWY4SUh39+DcMzTfWVoEQSrM6J+GzsjIRi1+smAaKx3kDzSfai0lXCG4UDf6XDSBO2+qR/X8IsMDjRVii0MQKXC720NUVaJw6Qs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777303828; c=relaxed/simple; bh=4vDqPI8DVk4MKXgzTTYnAtb5Hin/PlJJp6BgfgK/hjI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=l3wKC4NuPG/sPt+JUrtpZ2FhPM5RFoRnC3lFMaiC2S6p7LNsbB0TzNMaL6mNjpJ0IpPOYB8AgN3LIoh2guAiRr5kyYM/hhBEvWHsPS/KhGiRPz60hEJYnjRRDtcEB+cwrlRE3lhc88UFI9qP787s0AZAkVvkiMk0DgdC3w+Ojfk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine 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=Dp+6gJte; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine 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="Dp+6gJte" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1777303825; 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=F1+6dfsU9EA3zra9BmDxqCEbg56ER/RAJitXxHpONYg=; b=Dp+6gJteTzriCEIuaT5AcIbLnio2iryPLPcoCfx8GE7gstizMmpDaeOdnyV+Ic3Bd7HFTm VtUD6DD2rVo1SF+VjlNXZKh0Z4rH2Pi+Ja+6A4w0TSOK/4r3ysqHCC5no6rmUfC8UkoT8J 121qFRktqrreVi1SgLQ0CIQfzf6OZ10= Received: from mx-prod-mc-03.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-413-VGEojMTeMDqJ30AqFPnqOg-1; Mon, 27 Apr 2026 11:30:22 -0400 X-MC-Unique: VGEojMTeMDqJ30AqFPnqOg-1 X-Mimecast-MFC-AGG-ID: VGEojMTeMDqJ30AqFPnqOg_1777303820 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (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-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 3F9AE1956059; Mon, 27 Apr 2026 15:30:20 +0000 (UTC) Received: from warthog.procyon.org.com (unknown [10.44.32.126]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 42C191800664; Mon, 27 Apr 2026 15:30:17 +0000 (UTC) From: David Howells To: Christian Brauner Cc: David Howells , Paulo Alcantara , netfs@lists.linux.dev, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 04/22] netfs: Fix netfs_read_to_pagecache() to pause on subreq failure Date: Mon, 27 Apr 2026 16:29:31 +0100 Message-ID: <20260427152953.180038-5-dhowells@redhat.com> In-Reply-To: <20260427152953.180038-1-dhowells@redhat.com> References: <20260427152953.180038-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@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 10.30.177.111 Fix netfs_read_to_pagecache() so that it pauses the generation of new subrequests if an already-issued subrequest fails. Fixes: ee4cdf7ba857 ("netfs: Speed up buffered reading") Closes: https://sashiko.dev/#/patchset/20260425125426.3855807-1-dhowells%40redhat.com Signed-off-by: David Howells cc: Paulo Alcantara cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org --- fs/netfs/buffered_read.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/netfs/buffered_read.c b/fs/netfs/buffered_read.c index 3bc7d0c5c3b9..9c7a2f984be9 100644 --- a/fs/netfs/buffered_read.c +++ b/fs/netfs/buffered_read.c @@ -304,6 +304,11 @@ static void netfs_read_to_pagecache(struct netfs_io_request *rreq, } netfs_issue_read(rreq, subreq); + + if (test_bit(NETFS_RREQ_PAUSE, &rreq->flags)) + netfs_wait_for_paused_read(rreq); + if (test_bit(NETFS_RREQ_FAILED, &rreq->flags)) + break; cond_resched(); } while (size > 0);