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From: Jeremy Fitzhardinge on 20 Jul 2010 16:50
From: Daniel Stodden <daniel.stodden(a)citrix.com>

Signed-off-by: Daniel Stodden <daniel.stodden(a)citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge(a)citrix.com>
---
drivers/block/xen-blkfront.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 2c8de1b..0b44dc1 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -1120,6 +1120,10 @@ static int blkfront_remove(struct xenbus_device *xbdev)
mutex_lock(&bdev->bd_mutex);
info = disk->private_data;

+ dev_warn(disk_to_dev(disk),
+ "%s was hot-unplugged, %d stale handles\n",
+ xbdev->nodename, bdev->bd_openers);
+
if (info && !bdev->bd_openers) {
xlvbd_release_gendisk(info);
disk->private_data = NULL;
@@ -1183,6 +1187,7 @@ static int blkif_release(struct gendisk *disk, fmode_t mode)

if (xbdev && xbdev->state == XenbusStateClosing) {
/* pending switch to state closed */
+ dev_info(disk_to_dev(bdev->bd_disk), "releasing disk\n");
xlvbd_release_gendisk(info);
xenbus_frontend_closed(info->xbdev);
}
@@ -1191,6 +1196,7 @@ static int blkif_release(struct gendisk *disk, fmode_t mode)

if (!xbdev) {
/* sudden device removal */
+ dev_info(disk_to_dev(bdev->bd_disk), "releasing disk\n");
xlvbd_release_gendisk(info);
disk->private_data = NULL;
kfree(info);
--
1.7.1.1

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