tree 3c638cde9063a2461b9767ec626b4359445c662a
parent e00f4f4d0ff7e13b9115428a245b49108d625f09
author Josef Bacik <jbacik@fb.com> 1479841480 -0500
committer Jens Axboe <axboe@fb.com> 1479842192 -0700

nbd: add multi-connection support

NBD can become contended on its single connection.  We have to serialize all
writes and we can only process one read response at a time.  Fix this by
allowing userspace to provide multiple connections to a single nbd device.  This
coupled with block-mq drastically increases performance in multi-process cases.
Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>