For the various forms for read_bs_dev() and readv_bs_dev() to perform
reads from esnap devices, the spdk_bs_request_set used for the IO needs
to keep track of the back_bs_dev IO channel as well as the blobstore's
IO channel.
This commit has no change in functionality: it is preparation for a
change in a later commit.
Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Change-Id: I8edd9c4bf29bc074194331b42c5ef9d27590ce88
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14973
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
31c2852bb8