linux-kernel - [PATCH v2 4/4] nbd: Move flag parsing to a function

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Message-Id: <1450106280-7223-5-git-send-email-mpa@pengutronix.de>
Date:	Mon, 14 Dec 2015 16:18:00 +0100
From:	Markus Pargmann <mpa@...gutronix.de>
To:	nbd-general@...ts.sourceforge.net
Cc:	Oleg Nesterov <oleg@...hat.com>,
	Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org, Markus Pargmann <mpa@...gutronix.de>
Subject: [PATCH v2 4/4] nbd: Move flag parsing to a function

nbd changes properties of the blockdevice depending on flags that were
received. This patch moves this flag parsing into a separate function
nbd_parse_flags().

Signed-off-by: Markus Pargmann <mpa@...gutronix.de>
---
 drivers/block/nbd.c | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index a1fa356e4cbf..81a9be7d176c 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -641,6 +641,18 @@ static void nbd_bdev_reset(struct block_device *bdev)
 	}
 }
 
+static void nbd_parse_flags(struct nbd_device *nbd, struct block_device *bdev)
+{
+	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);
+	if (nbd->flags & NBD_FLAG_SEND_FLUSH)
+		blk_queue_flush(nbd->disk->queue, REQ_FLUSH);
+	else
+		blk_queue_flush(nbd->disk->queue, 0);
+}
+
 static int nbd_dev_dbg_init(struct nbd_device *nbd);
 static void nbd_dev_dbg_close(struct nbd_device *nbd);
 
@@ -742,15 +754,7 @@ 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);
-		if (nbd->flags & NBD_FLAG_SEND_FLUSH)
-			blk_queue_flush(nbd->disk->queue, REQ_FLUSH);
-		else
-			blk_queue_flush(nbd->disk->queue, 0);
+		nbd_parse_flags(nbd, bdev);
 
 		thread = kthread_run(nbd_thread_send, nbd, "%s",
 				     nbd_name(nbd));
-- 
2.6.2

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