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Subject: Re: [RFC] inode.i_opflags - Usage of two different locking schemes
To:     "Theodore Ts'o" <tytso@mit.edu>
Cc:     Horst Schirmeier <horst.schirmeier@tu-dortmund.de>,
        Jan Kara <jack@suse.cz>, Jan Kara <jack@suse.com>,
        linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org
References: <f63dd495-defb-adc4-aa91-6aacd7f441c7@tu-dortmund.de>
 <a4709bc4-ee62-2cdc-0628-32e8fa73e8f9@tu-dortmund.de>
 <YEJLuP6+Zy8/dq+D@mit.edu>
From:   Alexander Lochmann <alexander.lochmann@tu-dortmund.de>
Message-ID: <667b3ec3-a522-05a9-31e8-87d8bfaa7adb@tu-dortmund.de>
Date:   Fri, 5 Mar 2021 16:35:47 +0100
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From: Alexander Lochmann <alexander.lochmann@tu-dortmund.de>
To: Theodore Ts'o <tytso@mit.edu>
Cc: Horst Schirmeier <horst.schirmeier@tu-dortmund.de>,
 Jan Kara <jack@suse.cz>, Jan Kara <jack@suse.com>,
 linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org
Message-ID: <667b3ec3-a522-05a9-31e8-87d8bfaa7adb@tu-dortmund.de>
Subject: Re: [RFC] inode.i_opflags - Usage of two different locking schemes
References: <f63dd495-defb-adc4-aa91-6aacd7f441c7@tu-dortmund.de>
 <a4709bc4-ee62-2cdc-0628-32e8fa73e8f9@tu-dortmund.de>
 <YEJLuP6+Zy8/dq+D@mit.edu>
In-Reply-To: <YEJLuP6+Zy8/dq+D@mit.edu>

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On 05.03.21 16:18, Theodore Ts'o wrote:
> 1)  I don't see where i_opflags is being read in ipc/mqueue.c at all,
> either with or without i_rwsem.
>=20
It is read in fs/dcache.c
> 2)  I'm not sure what this has to do with ext4?
>=20
>          	    	      	       	  - Ted
>=20
Yeah. You're right. That was my fault. Sry.
I should have sent it to linux-kernel@... only.

- Alex

--=20
Technische Universit=C3=A4t Dortmund
Alexander Lochmann                PGP key: 0xBC3EF6FD
Otto-Hahn-Str. 16                 phone:  +49.231.7556141
D-44227 Dortmund                  fax:    +49.231.7556116
http://ess.cs.tu-dortmund.de/Staff/al


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