Re: LTP: diotest4.c:476: read to read-only space. returns 0: Success

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To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: LTP: diotest4.c:476: read to read-only space. returns 0: Success
From: Jan Stancek <jstancek@xxxxxxxxxx>
Date: Mon, 11 Nov 2019 05:38:54 -0500 (EST)
Cc: "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>, Naresh Kamboju <naresh.kamboju@xxxxxxxxxx>, LTP List <ltp@xxxxxxxxxxxxxx>, Linux-Next Mailing List <linux-next@xxxxxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, chrubis <chrubis@xxxxxxx>, open list <linux-kernel@xxxxxxxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>, Mark Brown <broonie@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, lkft-triage@xxxxxxxxxxxxxxxx, linux-ext4 <linux-ext4@xxxxxxxxxxxxxxx>, "Theodore Ts'o" <tytso@xxxxxxx>
In-reply-to: <20191111083815.GA29540@infradead.org>
Thread-index: 910IB+66jrM2sMmDpKAiK7gJA7sQsg==
Thread-topic: diotest4.c:476: read to read-only space. returns 0: Success

----- Original Message -----
> Is this a new test?

No, it's not new.

> If not why was this never reported?  Sounds like
> we should add this test case to xfstests.

I'm guessing not that many users still run 32bit kernels.
Naresh' setup is using ext4, so I assume he noticed only
after recent changes in linux-next wrt. directio and ext4.

Regards,
Jan

Follow-Ups:
- Re: LTP: diotest4.c:476: read to read-only space. returns 0: Success
  - From: Naresh Kamboju

References:
- LTP: diotest4.c:476: read to read-only space. returns 0: Success
  - From: Naresh Kamboju
- Re: LTP: diotest4.c:476: read to read-only space. returns 0: Success
  - From: Jan Stancek
- Re: LTP: diotest4.c:476: read to read-only space. returns 0: Success
  - From: Darrick J. Wong
- Re: LTP: diotest4.c:476: read to read-only space. returns 0: Success
  - From: Jan Stancek
- Re: LTP: diotest4.c:476: read to read-only space. returns 0: Success
  - From: Christoph Hellwig

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