On 3/26/18 10:39 PM, Omar Sandoval wrote: > From: Omar Sandoval <osandov@xxxxxx> > > Hi, Jens, > > We hit an issue where a loop device on NFS (yes, I know) got stuck and a > bunch of losetup processes got stuck in uninterruptible sleep waiting > for lo_ctl_mutex as a result. Calling into the filesystem while holding > lo_ctl_mutex isn't necessary, and there's no reason to be > uninterruptible here. These two patches fix this issue, based on your > for-next branch. Applied for 4.17, thanks Omar. -- Jens Axboe