From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751942AbdH3PAo (ORCPT ); Wed, 30 Aug 2017 11:00:44 -0400 Received: from bombadil.infradead.org ([65.50.211.133]:58861 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751456AbdH3PAj (ORCPT ); Wed, 30 Aug 2017 11:00:39 -0400 From: Christoph Hellwig To: viro@zeniv.linux.org.uk Cc: arve@android.com, riandrews@android.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 09/16] net/9p: switch p9_fd_read to kernel_write Date: Wed, 30 Aug 2017 17:00:00 +0200 Message-Id: <20170830150007.3953-10-hch@lst.de> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170830150007.3953-1-hch@lst.de> References: <20170830150007.3953-1-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Instead of playing with the addressing limits. Signed-off-by: Christoph Hellwig --- net/9p/trans_fd.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c index f12815777beb..903a190319b9 100644 --- a/net/9p/trans_fd.c +++ b/net/9p/trans_fd.c @@ -422,8 +422,7 @@ static void p9_read_work(struct work_struct *work) static int p9_fd_write(struct p9_client *client, void *v, int len) { - int ret; - mm_segment_t oldfs; + ssize_t ret; struct p9_trans_fd *ts = NULL; if (client && client->status != Disconnected) @@ -435,12 +434,7 @@ static int p9_fd_write(struct p9_client *client, void *v, int len) if (!(ts->wr->f_flags & O_NONBLOCK)) p9_debug(P9_DEBUG_ERROR, "blocking write ...\n"); - oldfs = get_fs(); - set_fs(get_ds()); - /* The cast to a user pointer is valid due to the set_fs() */ - ret = vfs_write(ts->wr, (__force void __user *)v, len, &ts->wr->f_pos); - set_fs(oldfs); - + ret = kernel_write(ts->wr, v, len, &ts->wr->f_pos); if (ret <= 0 && ret != -ERESTARTSYS && ret != -EAGAIN) client->status = Disconnected; return ret; -- 2.11.0