From patchwork Thu Mar 28 16:34:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 13609113 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 8BE8E132484 for ; Thu, 28 Mar 2024 16:38:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711643890; cv=none; b=RsSqnGkDQbHNOg3+QBmf05L2fh0Opj+WCvVeLHdoIXZZoCoQxGUzoiCiw/trirAZLM2K6h3+71KdoG3un7FahtL0LsZgEShNAkimslc8s3tNPaztmy1IYqpsYwHF48ov83kIa6tSAdsZn/URiwCoick3R+3pyDmayHnnqSAP+d8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711643890; c=relaxed/simple; bh=YOFdy5xHJExTdGSNGA/bjJfdcMMA97H0CVe8osQSYQE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ub+VfOOtt5sW8yv42kx734S5vbUt2m3u5ag1LxChe/Csyeykmw7XE8GhSrFMPi/v79DiXtw6QIXD44tv+gmbAl92IJ8ola6XDvfjsP/hpG8A5dslA7KycC2VXD2/WHdKS7DRzABuqredp9d75AGTK5I/bw2NFUgrdXuFSsUzPWI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none 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=RJazhi7B; arc=none smtp.client-ip=170.10.133.124 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="RJazhi7B" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1711643887; 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=YXmc3YCo60jECje6D8F3mfZ1bN1Jr5ynl0cOwSqeZGY=; b=RJazhi7BJJDXZ9Rd92tw6M4bnr1CFNSxk2CNnVY10wM4gHx1qEZdFk81/e4ahLNP5kCAyb nHuADjMRj8xU6+YEzpRSJvTDObz26GyLBC4bx8pcHaVN9r5UBMhow2GPoP2GIDB2fgcTxD L7cBwR84sbzgNLqfiPAFkXEJ+YjS23I= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-252-8jp_rTaQOFW2Kmd5vBMnHA-1; Thu, 28 Mar 2024 12:38:02 -0400 X-MC-Unique: 8jp_rTaQOFW2Kmd5vBMnHA-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (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 mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5A18A88F2EC; Thu, 28 Mar 2024 16:38:01 +0000 (UTC) Received: from warthog.procyon.org.com (unknown [10.42.28.146]) by smtp.corp.redhat.com (Postfix) with ESMTP id 72392492BD0; Thu, 28 Mar 2024 16:37:58 +0000 (UTC) From: David Howells To: Christian Brauner , Jeff Layton , Gao Xiang , Dominique Martinet Cc: David Howells , Matthew Wilcox , Steve French , Marc Dionne , Paulo Alcantara , Shyam Prasad N , Tom Talpey , Eric Van Hensbergen , Ilya Dryomov , netfs@lists.linux.dev, linux-cachefs@redhat.com, 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-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 17/26] netfs: Fix writethrough-mode error handling Date: Thu, 28 Mar 2024 16:34:09 +0000 Message-ID: <20240328163424.2781320-18-dhowells@redhat.com> In-Reply-To: <20240328163424.2781320-1-dhowells@redhat.com> References: <20240328163424.2781320-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.10 Fix the error return in netfs_perform_write() acting in writethrough-mode to return any cached error in the case that netfs_end_writethrough() returns 0. Signed-off-by: David Howells cc: Jeff Layton cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Reviewed-by: Jeff Layton --- fs/netfs/buffered_write.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/fs/netfs/buffered_write.c b/fs/netfs/buffered_write.c index 8e4a3fb287e3..db4ad158948b 100644 --- a/fs/netfs/buffered_write.c +++ b/fs/netfs/buffered_write.c @@ -188,7 +188,7 @@ ssize_t netfs_perform_write(struct kiocb *iocb, struct iov_iter *iter, enum netfs_how_to_modify howto; enum netfs_folio_trace trace; unsigned int bdp_flags = (iocb->ki_flags & IOCB_SYNC) ? 0: BDP_ASYNC; - ssize_t written = 0, ret; + ssize_t written = 0, ret, ret2; loff_t i_size, pos = iocb->ki_pos, from, to; size_t max_chunk = PAGE_SIZE << MAX_PAGECACHE_ORDER; bool maybe_trouble = false; @@ -409,10 +409,12 @@ ssize_t netfs_perform_write(struct kiocb *iocb, struct iov_iter *iter, out: if (unlikely(wreq)) { - ret = netfs_end_writethrough(wreq, iocb); + ret2 = netfs_end_writethrough(wreq, iocb); wbc_detach_inode(&wbc); - if (ret == -EIOCBQUEUED) - return ret; + if (ret2 == -EIOCBQUEUED) + return ret2; + if (ret == 0) + ret = ret2; } iocb->ki_pos += written;