linux-kernel - [PATCH 023/206] Staging: hv: Cleanup blkvsc

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Date:	Mon,  9 May 2011 14:55:05 -0700
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...e.de, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, virtualization@...ts.osdl.org
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Abhishek Kane <v-abkane@...rosoft.com>,
	Hank Janssen <hjanssen@...rosoft.com>
Subject: [PATCH 023/206] Staging: hv: Cleanup blkvsc_remove()

The function storvsc_dev_remove() already deals with draining of 
the outstanding I/O. Cleanup blkvsc_remove() keeping this in mind.

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
Signed-off-by: Abhishek Kane <v-abkane@...rosoft.com>
Signed-off-by: Hank Janssen <hjanssen@...rosoft.com>
---
 drivers/staging/hv/blkvsc_drv.c |   18 ++++++------------
 1 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index 457d0bb..217676a 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -538,11 +538,6 @@ static int blkvsc_remove(struct hv_device *dev)
 	struct block_device_context *blkdev = dev_get_drvdata(&dev->device);
 	unsigned long flags;
 
-	/*
-	 * Call to the vsc driver to let it know that the device is being
-	 * removed
-	 */
-	storvsc_dev_remove(dev);
 
 	/* Get to a known state */
 	spin_lock_irqsave(&blkdev->lock, flags);
@@ -555,17 +550,16 @@ static int blkvsc_remove(struct hv_device *dev)
 
 	spin_unlock_irqrestore(&blkdev->lock, flags);
 
-	while (blkdev->num_outstanding_reqs) {
-		DPRINT_INFO(STORVSC, "waiting for %d requests to complete...",
-			    blkdev->num_outstanding_reqs);
-		udelay(100);
-	}
-
-
 	blkvsc_do_operation(blkdev, DO_FLUSH);
 
 	blk_cleanup_queue(blkdev->gd->queue);
 
+	/*
+	 * Call to the vsc driver to let it know that the device is being
+	 * removed
+	 */
+	storvsc_dev_remove(dev);
+
 	del_gendisk(blkdev->gd);
 
 	kmem_cache_destroy(blkdev->request_pool);
-- 
1.7.4.1

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