linux-kernel - [PATCH] virtio_blk: remove BKL leftovers

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Date:	Wed, 15 Sep 2010 01:27:23 +0200
From:	Christoph Hellwig <hch@....de>
To:	rusty@...tcorp.com.au
Cc:	arnd@...db.de, linux-kernel@...r.kernel.org
Subject: [PATCH] virtio_blk: remove BKL leftovers

Remove the BKL usage added in "block: push down BKL into .locked_ioctl".
Virtio-blk doesn't use the BKL for anything, and doesn't implement any
ioctl command by itself, but only uses the generic scsi_cmd_ioctl
which is fine without the BKL.

Signed-off-by: Christoph Hellwig <hch@....de>

Index: linux-2.6/drivers/block/virtio_blk.c
===================================================================
--- linux-2.6.orig/drivers/block/virtio_blk.c	2010-09-09 18:13:25.171253781 -0300
+++ linux-2.6/drivers/block/virtio_blk.c	2010-09-09 18:14:48.154266565 -0300
@@ -2,7 +2,6 @@
 #include <linux/spinlock.h>
 #include <linux/slab.h>
 #include <linux/blkdev.h>
-#include <linux/smp_lock.h>
 #include <linux/hdreg.h>
 #include <linux/virtio.h>
 #include <linux/virtio_blk.h>
@@ -218,8 +217,8 @@ static int virtblk_get_id(struct gendisk
 	return blk_execute_rq(vblk->disk->queue, vblk->disk, req, false);
 }
 
-static int virtblk_locked_ioctl(struct block_device *bdev, fmode_t mode,
-			 unsigned cmd, unsigned long data)
+static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
+			     unsigned int cmd, unsigned long data)
 {
 	struct gendisk *disk = bdev->bd_disk;
 	struct virtio_blk *vblk = disk->private_data;
@@ -234,18 +233,6 @@ static int virtblk_locked_ioctl(struct b
 			      (void __user *)data);
 }
 
-static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
-			     unsigned int cmd, unsigned long param)
-{
-	int ret;
-
-	lock_kernel();
-	ret = virtblk_locked_ioctl(bdev, mode, cmd, param);
-	unlock_kernel();
-
-	return ret;
-}
-
 /* We provide getgeo only to please some old bootloader/partitioning tools */
 static int virtblk_getgeo(struct block_device *bd, struct hd_geometry *geo)
 {
--
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