This bug was fixed in the package zfs-linux - 0.8.3-1ubuntu14
--------------- zfs-linux (0.8.3-1ubuntu14) groovy; urgency=medium
* Backport 5.7 compat changes (LP: #1872373) - backport of upstream commit 68dde63d138882860109178f4ab0b7b1b1bb3cfd ("Linux 5.7 compat: blk_alloc_queue()")
-- Colin Ian King <email address hidden> Mon, 18 May 2020 16:13:22 +0100
This bug was fixed in the package zfs-linux - 0.8.3-1ubuntu14
---------------
zfs-linux (0.8.3-1ubuntu14) groovy; urgency=medium
* Backport 5.7 compat changes (LP: #1872373) 60109178f4ab0b7 b1b1bb3cfd
- backport of upstream commit 68dde63d1388828
("Linux 5.7 compat: blk_alloc_queue()")
-- Colin Ian King <email address hidden> Mon, 18 May 2020 16:13:22 +0100