Re: [PATCH 1/4] sched: move IO scheduling accounting from io_schedule_timeout() to __schedule()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello,

On Mon, Oct 31, 2016 at 10:45:56AM -0600, Tejun Heo wrote:
> Tracking the owners of mutexes and rwsems does help quite a bit.  I
> don't think it's as simple as inheriting io sleep state from the
> current owner tho.  The owner might be running or in a non-IO sleep
> when others try to grab the mutex.  It is an option to ignore those
> cases but this would have a real possibility to lead to surprising
> results in some corner cases.  If we choose to propagate dynamically,
> it becomes an a lot more complex problem and I don't think it'd be
> justfiable.
> 
> Unless there can be a simple enough and reliable solution, I think
> it'd be better to stick with explicit marking.

Just posted the fixed version for the first patch.  Any more thoughts
on this?

Thanks.

-- 
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux