From mboxrd@z Thu Jan  1 00:00:00 1970
From: kbusch@kernel.org (Keith Busch)
Date: Tue, 14 May 2019 08:23:37 -0600
Subject: PROBLEM: call trace triggered in 5.1.1 in
 drivers/nvme/host/pci.c, 5.0.11 ok
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 <20190514055832.GA6843@lst.de>
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On Tue, May 14, 2019@04:14:39PM +0200, Christoph Hellwig wrote:
> On Tue, May 14, 2019@10:12:22PM +0800, Ming Lei wrote:
> > The two aren't merged because the default segment size(BLK_MAX_SEGMENT_SIZE) is 64KB,
> 
> Yep.
> 
> > and the following patch may fix this issue:
> 
> Or this one posted yesterday for that matter:
> 
> https://marc.info/?l=linux-block&m=155772952511144&w=2

Nice, either one looks good. We could also safely cap it to
(limits->max_hw_sectors << 9) instead of UINT_MAX.