diff options
Diffstat (limited to 'drivers/block/rbd.c')
| -rw-r--r-- | drivers/block/rbd.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index a75fe93a25b..5ab9f55d3e0 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1684,7 +1684,9 @@ static int rbd_header_add_snap(struct rbd_device *dev, if (ret < 0) return ret; - dev->header.snapc->seq = new_snapid; + down_write(&dev->header_rwsem); + dev->header.snapc->seq = new_snapid; + up_write(&dev->header_rwsem); return 0; bad: |