lkml.org 
[lkml]   [2018]   [May]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC PATCH v2 2/2] locking/percpu-rwsem: Mark rwsem as non-spinnable in percpu_rwsem_release()
From
Date
On 05/15/2018 01:42 AM, Amir Goldstein wrote:
> On Mon, May 14, 2018 at 10:31 PM, Waiman Long <longman@redhat.com> wrote:
>> The percpu_rwsem_release() is called when the ownership of the embedded
>> rwsem is to be transferred to another task. The new owner, however, may
>> take a while to get the ownership of the lock via percpu_rwsem_acquire().
>> During that period, the rwsem is now marked as writer-owned with no
>> optimistic spinning.
>>
> Waiman,
>
> Thanks for the fix. I will test it soon.
>
> For this commit message I suggest that you add parts of the reproducer
> found here:
> https://marc.info/?l=linux-fsdevel&m=152622016219975&w=2
>
> Thanks,
> Amir.
Sure. I will add that to the commit log.

Cheers,
Longman

\
 
 \ /
  Last update: 2018-05-15 15:46    [W:0.282 / U:0.600 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site