tree 1fc9ab7169aeb6527fac23de6ba16b1e677c2236
parent eeeefd41843218c55a8782a6920f044d9bf6207a
author Jens Axboe <axboe@fb.com> 1487257053 -0700
committer Jens Axboe <axboe@fb.com> 1487257326 -0700

cfq-iosched: don't call wbt_disable_default() with IRQs disabled

wbt_disable_default() calls del_timer_sync() to wait for the wbt
timer to finish before disabling throttling. We can't do this with
IRQs disable. This fixes a lockdep splat on boot, if non-root
cgroups are used.

Reported-by: Gabriel C <nix.or.die@gmail.com>
Fixes: 87760e5eef35 ("block: hook up writeback throttling")
Signed-off-by: Jens Axboe <axboe@fb.com>