On Thu, Jan 26, 2017 at 11:06:53AM +0100, Jan Kara wrote: > Yeah, so my patches (and I suspect your as well), have a problem when the > backing_device_info stays around because blkdev inode still exists, device > gets removed (e.g. USB disk gets unplugged) but blkdev inode still stays > around (there doesn't appear to be anything that would be forcing blkdev > inode out of cache on device removal and there cannot be because different > processes may hold inode reference) and then some other device gets plugged > in and reuses the same MAJOR:MINOR combination. Things get awkward there, I > think we need to unhash blkdev inode on device removal but so far I didn't > make this work...
The other option is to simply not release the dev_t until the backing_dev is gone. _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm
