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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>
This commit is contained in:
Daniel Stodden 2010-04-30 22:01:23 +00:00 committed by Jens Axboe
parent acfca3c622
commit 7b32d1044a
1 changed files with 2 additions and 8 deletions
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10
drivers/block/xen-blkfront.c
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@ -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);