Re: dd hangs when reading large partitions

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To: Marc Gonzalez <marc.w.gonzalez@xxxxxxx>, linux-mm <linux-mm@xxxxxxxxx>, linux-block <linux-block@xxxxxxxxxxxxxxx>
Subject: Re: dd hangs when reading large partitions
From: Bart Van Assche <bvanassche@xxxxxxx>
Date: Fri, 08 Feb 2019 07:49:46 -0800
Cc: Jianchao Wang <jianchao.w.wang@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, fsdevel <linux-fsdevel@xxxxxxxxxxxxxxx>, SCSI <linux-scsi@xxxxxxxxxxxxxxx>, Joao Pinto <jpinto@xxxxxxxxxxxx>, Jeffrey Hugo <jhugo@xxxxxxxxxxxxxx>, Evan Green <evgreen@xxxxxxxxxxxx>, Matthias Kaehlcke <mka@xxxxxxxxxxxx>, Douglas Anderson <dianders@xxxxxxxxxxxx>, Stephen Boyd <swboyd@xxxxxxxxxxxx>, Tomas Winkler <tomas.winkler@xxxxxxxxx>, Adrian Hunter <adrian.hunter@xxxxxxxxx>, Alim Akhtar <alim.akhtar@xxxxxxxxxxx>, Avri Altman <avri.altman@xxxxxxx>, Bart Van Assche <bart.vanassche@xxxxxxx>, Martin Petersen <martin.petersen@xxxxxxxxxx>, Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>, Ming Lei <ming.lei@xxxxxxxxxx>, Omar Sandoval <osandov@xxxxxx>, Roman Gushchin <guro@xxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>
In-reply-to: <66419195-594c-aa83-c19d-f091ad3b296d@free.fr>

On Fri, 2019-02-08 at 16:33 +-0100, Marc Gonzalez wrote:
+AD4 Does anyone see what's going sideways in the no-flag case?

Hi Marc,

Does this problem only occur with block devices backed by the UFS driver
or does this problem also occur with other block drivers?

Thanks,

Bart.

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