linux-kernel - Re: reeze while write on external usb 3.0 hard disk [Bug 204095]

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Date:   Tue, 20 Aug 2019 09:23:26 +0200
From:   Christoph Hellwig <hch@....de>
To:     Alan Stern <stern@...land.harvard.edu>
Cc:     Piergiorgio Sartor <piergiorgio.sartor@...go.de>,
        Jens Axboe <axboe@...nel.dk>, Christoph Hellwig <hch@....de>,
        USB list <linux-usb@...r.kernel.org>,
        linux-block@...r.kernel.org,
        Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: reeze while write on external usb 3.0 hard disk [Bug 204095]

On Mon, Aug 19, 2019 at 10:14:25AM -0400, Alan Stern wrote:
> Let's bring this to the attention of some more people.
> 
> It looks like the bug that was supposed to be fixed by commit
> d74ffae8b8dd ("usb-storage: Add a limitation for
> blk_queue_max_hw_sectors()"), which is part of 5.2.5, but apparently
> the bug still occurs.

Piergiorgio,

can you dump the content of max_hw_sectors_kb file for your USB storage
device and send that to this thread?