nvme/host: reference the fabric module for each bdev open callout

Browse source

We don't want to be able to unload the fabric driver when we have
openened referenced to our namespaces. Thus, for each nvme_open we
take a reference on the fabric driver and put it in nvme_release.
This behavior is consistent with the scsi model.

This resolves the panic when unloading a fabric module with
mpath holders.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ian Bakshan <ianb@mellanox.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

...

This commit is contained in:

Sagi Grimberg 2016-02-10 10:03:29 -08:00 • committed by Jens Axboe

parent 1b3c47c182

commit e439bb12e7

3 changed files with 18 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

19

drivers/nvme/host/core.c

View file

1

drivers/nvme/host/nvme.h

View file

1

drivers/nvme/host/pci.c

View file