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Date: Mon, 10 Oct 2016 10:10:29 -0400 (EDT)
From: CAI Qian <caiqian@redhat.com>
To: Dave Chinner <david@fromorbit.com>
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Subject: Re: local DoS - systemd hang or timeout (WAS: Re: [RFC][CFT]
 splice_read reworked)
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----- Original Message -----
> From: "Dave Chinner" <david@fromorbit.com>
> To: "CAI Qian" <caiqian@redhat.com>
> Cc: "Jan Kara" <jack@suse.cz>, "Miklos Szeredi" <miklos@szeredi.hu>, "tj" <tj@kernel.org>, "Al Viro"
> <viro@ZenIV.linux.org.uk>, "Linus Torvalds" <torvalds@linux-foundation.org>, "linux-xfs"
> <linux-xfs@vger.kernel.org>, "Jens Axboe" <axboe@kernel.dk>, "Nick Piggin" <npiggin@gmail.com>,
> linux-fsdevel@vger.kernel.org, "Dave Jones" <davej@codemonkey.org.uk>
> Sent: Sunday, October 9, 2016 5:54:55 PM
> Subject: Re: local DoS - systemd hang or timeout (WAS: Re: [RFC][CFT] splice_read reworked)
> 
> Again, no evidence that the system is actually hung. Waiting on
> locks, yes, but nothing to indicate there is a deadlock in those
> waiters.
Here you are,

http://people.redhat.com/qcai/tmp/dmesg

    CAI Qian