lkml.org 
[lkml]   [2017]   [Nov]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH PREEMPT RT] rt-mutex: fix deadlock in device mapper
From
Date
On Mon, 2017-11-20 at 16:33 -0500, Mikulas Patocka wrote:
>
> Is there some specific scenario where you need to call
> blk_schedule_flush_plug from rt_spin_lock_fastlock?

Excellent question.  What's the difference between not getting IO
started because you meet a mutex with an rt_mutex under the hood, and
not getting IO started because you meet a spinlock with an rt_mutex
under the hood?  If just doing the mutex side puts this thing back to
sleep, I'm happy.

-Mike

\
 
 \ /
  Last update: 2017-11-21 04:21    [W:1.249 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site