From: Al Viro <viro@ZenIV.linux.org.uk>
To: Dave Jones <davej@codemonkey.org.uk>,
Dave Chinner <david@fromorbit.com>,
"Darrick J. Wong" <darrick.wong@oracle.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
linux-xfs@vger.kernel.org
Subject: Re: iov_iter_pipe warning.
Date: Sun, 10 Sep 2017 21:05:48 +0100 [thread overview]
Message-ID: <20170910200547.GD5426@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20170910160710.7myz4iel2mnvya3b@codemonkey.org.uk>
On Sun, Sep 10, 2017 at 12:07:10PM -0400, Dave Jones wrote:
> On Sun, Sep 10, 2017 at 03:57:21AM +0100, Al Viro wrote:
> > On Sat, Sep 09, 2017 at 09:07:56PM -0400, Dave Jones wrote:
> >
> > > With this in place, I'm still seeing -EBUSY from invalidate_inode_pages2_range
> > > which doesn't end well...
> >
> > Different issue, and I'm not sure why that WARN_ON() is there in the
> > first place. Note that in a similar situation generic_file_direct_write()
> > simply buggers off and lets the caller do buffered write...
> >
> > iov_iter_pipe() warning is a sign of ->read_iter() on pipe-backed iov_iter
> > putting into the pipe more than it claims to have done.
>
> (from a rerun after hitting that EBUSY warn; hence the taint)
>
> WARNING: CPU: 0 PID: 14154 at fs/iomap.c:1055 iomap_dio_rw+0x78e/0x840
... and that's another invalidate_inode_pages2_range() in the same
sucker. Again, compare with generic_file_direct_write()...
I don't believe that this one has anything splice-specific to do with it.
And its only relation to iov_iter_pipe() splat is that it's in the same
fs/iomap.c...
next prev parent reply other threads:[~2017-09-10 20:05 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170412152600.GP29622@ZenIV.linux.org.uk>
[not found] ` <20170412162709.bn5qfk4seues3yos@codemonkey.org.uk>
[not found] ` <20170412170723.GQ29622@ZenIV.linux.org.uk>
[not found] ` <20170412190318.srkkdytf2ebrjzrg@codemonkey.org.uk>
[not found] ` <20170421175430.GT29622@ZenIV.linux.org.uk>
[not found] ` <20170428152955.mafs3f22srmm34aw@codemonkey.org.uk>
[not found] ` <20170428164313.GK29622@ZenIV.linux.org.uk>
[not found] ` <20170428165024.ofyl2atpjwohekqa@codemonkey.org.uk>
[not found] ` <20170428172024.GL29622@ZenIV.linux.org.uk>
[not found] ` <20170807201818.kykqzexce6ap6aik@codemonkey.org.uk>
2017-08-28 20:31 ` iov_iter_pipe warning Dave Jones
2017-08-29 4:25 ` Darrick J. Wong
2017-08-30 17:05 ` Dave Jones
2017-08-30 17:13 ` Darrick J. Wong
2017-08-30 17:17 ` Dave Jones
2017-09-06 20:03 ` Dave Jones
2017-09-06 23:46 ` Dave Chinner
2017-09-07 3:48 ` Dave Jones
2017-09-07 4:33 ` Al Viro
2017-09-08 1:04 ` Al Viro
2017-09-10 1:07 ` Dave Jones
2017-09-10 2:57 ` Al Viro
2017-09-10 16:07 ` Dave Jones
2017-09-10 20:05 ` Al Viro [this message]
2017-09-10 20:07 ` Dave Jones
2017-09-10 20:33 ` Al Viro
2017-09-10 21:11 ` Dave Chinner
2017-09-10 21:19 ` Al Viro
2017-09-10 22:08 ` Dave Chinner
2017-09-10 23:07 ` Al Viro
2017-09-10 23:15 ` Al Viro
2017-09-11 0:31 ` Dave Chinner
2017-09-11 3:32 ` Al Viro
2017-09-11 6:44 ` Dave Chinner
2017-09-11 20:07 ` Al Viro
2017-09-11 20:17 ` Al Viro
2017-09-12 6:02 ` Dave Chinner
2017-09-12 11:13 ` Al Viro
2017-09-11 12:07 ` Christoph Hellwig
2017-09-11 12:51 ` Al Viro
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