block: push down BKL into .locked_ioctl

[mirror_ubuntu-bionic-kernel.git] / drivers / block / virtio_blk.c

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 0a3222fd44422e1e2a1a7296ac4bb6aa831f49ff..7b0f7b624adf0699849a00cb47f19776e56cb3fc 100644 (file)
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -2,6 +2,7 @@
 #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>
@@ -217,7 +218,7 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str)
        return blk_execute_rq(vblk->disk->queue, vblk->disk, req, false);
 }
 
-static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
+static int virtblk_locked_ioctl(struct block_device *bdev, fmode_t mode,
                         unsigned cmd, unsigned long data)
 {
        struct gendisk *disk = bdev->bd_disk;
@@ -243,6 +244,18 @@ static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
                              (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)
 {
@@ -269,7 +282,7 @@ static int virtblk_getgeo(struct block_device *bd, struct hd_geometry *geo)
 }
 
 static const struct block_device_operations virtblk_fops = {
-       .locked_ioctl = virtblk_ioctl,
+       .ioctl  = virtblk_ioctl,
        .owner  = THIS_MODULE,
        .getgeo = virtblk_getgeo,
 };