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From: David Sterba <dsterba@suse.cz>
To: Liu Bo <bo.li.liu@oracle.com>
Cc: Chandan Rajendra <chandan@linux.vnet.ibm.com>,
	linux-btrfs@vger.kernel.org, fdmanana@suse.com, dsterba@suse.com
Subject: Re: [PATCH] Btrfs: Fix deadlock between direct IO and fast fsync
Date: Mon, 2 Jan 2017 15:29:53 +0100	[thread overview]
Message-ID: <20170102142953.GH12081@twin.jikos.cz> (raw)
In-Reply-To: <20161224001800.GA11160@localhost.localdomain>

On Fri, Dec 23, 2016 at 04:18:00PM -0800, Liu Bo wrote:
> > > Btw, I was able to reproduce the issue on kdave/for-next branch with "Merge
> > > branch 'for-next-next-4.9-20161125' into for-next-20161125" as the topmost
> > > commit. The issue cannot be reproduced yet on latest code available from
> > > kdave/for-next branch.
> > 
> > Maybe changes in upstream might have masked the issue in the recent
> > kdave/for-next branch. I say that because 'git bisect' resulted in the
> > following commit ...
> 
> I guess that the for-next branch didn't revert this patch[1] as upstream
> did, [...]

> [1]: Btrfs: adjust len of writes if following a preallocated extent
> https://patchwork.kernel.org/patch/9413129/

The revert was present in the for-next-20161219 branch, the for-next
branches sit on top of recent upstream rc tag and are merged from
various dev branches so the patch difference should be minimal in the
end.

  parent reply	other threads:[~2017-01-02 14:30 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-23  9:30 [PATCH] Btrfs: Fix deadlock between direct IO and fast fsync Chandan Rajendra
2016-12-23 10:27 ` Chandan Rajendra
2016-12-23 11:57   ` Chandan Rajendra
2016-12-24  0:18     ` Liu Bo
2016-12-24  3:27       ` Chandan Rajendra
2017-01-02 14:29       ` David Sterba [this message]
2017-01-06 11:45 ` Filipe Manana
2017-01-06 12:18   ` David Sterba

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