Save the io_path to which the current I/O is submitted into struct
nvme_bdev_io to know which io_path caused I/O error, or to reuse it
to avoid repeated traversal.
Besides, add a simple helper function nvme_io_path_is_available() to
check if the io_path can be reused.
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: Idadd3a3188d9b333b335ea79e20a244aa0ce0bdd
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9296
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
772e6db413