From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933301Ab3BLQGd (ORCPT ); Tue, 12 Feb 2013 11:06:33 -0500 Received: from mail-vc0-f171.google.com ([209.85.220.171]:59679 "EHLO mail-vc0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933270Ab3BLQGb (ORCPT ); Tue, 12 Feb 2013 11:06:31 -0500 From: Paolo Bonzini To: linux-kernel@vger.kernel.org Cc: , Paul Clements , Andrew Morton Subject: [PATCH 3/3] nbd: show read-only state in sysfs Date: Tue, 12 Feb 2013 17:06:11 +0100 Message-Id: <1360685171-3792-4-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1360685171-3792-1-git-send-email-pbonzini@redhat.com> References: <1360685171-3792-1-git-send-email-pbonzini@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Pass the read-only flag to set_device_ro, so that it will be visible to the block layer and in sysfs. Cc: Cc: Paul Clements Cc: Andrew Morton Signed-off-by: Paolo Bonzini --- drivers/block/nbd.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index a9c5c7a..ef17c2e 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -703,6 +703,8 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd, mutex_unlock(&nbd->tx_lock); + if (nbd->flags & NBD_FLAG_READ_ONLY) + set_device_ro(bdev, true); if (nbd->flags & NBD_FLAG_SEND_TRIM) queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, nbd->disk->queue); @@ -730,6 +732,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd, dev_warn(disk_to_dev(nbd->disk), "queue cleared\n"); kill_bdev(bdev); queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, nbd->disk->queue); + set_device_ro(bdev, false); if (file) fput(file); nbd->flags = 0; -- 1.7.1