linux-ext4 - [Bug 89511] USB-storage mount error

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Message-ID: <bug-89511-13602-0tl4oDPvSm@https.bugzilla.kernel.org/>
Date:	Thu, 04 Jun 2015 07:47:54 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 89511] USB-storage mount error

https://bugzilla.kernel.org/show_bug.cgi?id=89511

Markus Rathgeb <maggu2810@...il.com> changed:

           What    |Removed                     |Added
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                 CC|                            |maggu2810@...il.com

--- Comment #50 from Markus Rathgeb <maggu2810@...il.com> ---
I ran in the same trouble with an old USB case for 2.5'' IDE hard discs.

The drive cache_type is set to "write back" if it plugged in.
The drive is working using if I set the cache type to "temporary write
through".

So, I think this is the exact same problem discussed here.

At the moment I tested the workaround using v3.18.2 (gentoo-sources).
Without the workaround the problem also exists using the Kernel v4.0.4 (used
gentoo-sources, but I think that should not be related to the problem at all).

Is there anything I / we can do, to solve this problem at all in the kernel
space (e.g. if SYNCHRONIZE CACHE command is not working, fallback to write
through)?

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