blkfront: Remove obsolete info->users

This is just bd_openers, protected by the bd_mutex.

Signed-off-by: Daniel Stodden <daniel.stodden@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 2 insertions, 8 deletions

diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 9c5a25a462e6..b01167b6207a 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -96,12 +96,6 @@ struct blkfront_info
         unsigned long shadow_free;
         int feature_barrier;
         int is_ready;
-
-        /**
-         * The number of people holding this device open.  We won't allow a
-         * hot-unplug unless this is 0.
-         */
-        int users;
 };
 
 static DEFINE_SPINLOCK(blkif_io_lock);
@@ -977,7 +971,7 @@ blkfront_closing(struct blkfront_info *info)
 
         mutex_lock(&bdev->bd_mutex);
 
-        if (info->users) {
+        if (bdev->bd_openers) {
                 xenbus_dev_error(xbdev, -EBUSY,
                                  "Device in use; refusing to close");
                 xenbus_switch_state(xbdev, XenbusStateClosing);
@@ -1126,7 +1120,7 @@ static int blkfront_remove(struct xenbus_device *xbdev)
         mutex_lock(&bdev->bd_mutex);
         info = disk->private_data;
 
-        if (info && !info->users) {
+        if (info && !bdev->bd_openers) {
                 xlvbd_release_gendisk(info);
                 disk->private_data = NULL;
                 kfree(info);