On 2/10/18 7:14 AM, Tetsuo Handa wrote:
Recently, we are seeing I/O hungup reports.
I don't know whether a regression introduced by commit 50816c48997af857 ("sched/wait: Standardize internal naming of wait-queue entries") is relevant. But shouldn't we backport commit c6b9d9a330290144 ("sched/wait: Fix add_wait_queue() behavioral change") to 4.13+ kernels anyway?
Yes, it most certainly should!