Convert the deprecated send and receive completion tasklets in net/rds/ib to BH work items queued on system_bh_wq. In rds_ib_conn_path_shutdown(), replace tasklet_kill() with disable_work_sync(), and call enable_work() after destroying the CQs so the work items can be used again when the connection reconnects. Signed-off-by: Sunny Tiwari <sunnytiwari@google.com> Reviewed-by: Allison Henderson <achender@kernel.org> Link: https://patch.msgid.link/20cbfc32678019daadd3c67fd75262b8264aa180.1790178801.git.sunnytiwari@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>