Re: [PATCH 6/6] nbd: reduce the nbd_index_mutex scope
On Wed, Aug 11, 2021 at 02:44:28PM +0200, Christoph Hellwig wrote:
> nbd_index_mutex is currently held over add_disk and inside ->open, which
> leads to lock order reversals. Refactor the device creation code path
> so that nbd_dev_add is called without nbd_index_mutex lock held and
> only takes it for the IDR insertation.
insertion
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> drivers/block/nbd.c | 55 +++++++++++++++++++++++----------------------
> 1 file changed, 28 insertions(+), 27 deletions(-)
>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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