loop: Properly clear sysfs in autoclear mode
In autoclear mode bdev is NULL but the sysfs
entry should be destroyed otherwise this warning appears:
WARNING: at fs/sysfs/dir.c:451 sysfs_add_one+0x82/0x95()
sysfs: cannot create duplicate filename '/devices/virtual/block/loop0/loop'
Fixes commit ee86273062cbb310665fe49e1f1937d2cf85b0b9
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 450c958..1e5284e 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1049,9 +1049,9 @@
if (bdev)
invalidate_bdev(bdev);
set_capacity(lo->lo_disk, 0);
+ loop_sysfs_exit(lo);
if (bdev) {
bd_set_size(bdev, 0);
- loop_sysfs_exit(lo);
/* let user-space know about this change */
kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
}