linux-ext4 - Re: [RFC] inode.i_opflags - Usage of two different locking schemes

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Message-ID: <YEJWiXaZ+9H+2nBx@mit.edu>
Date:   Fri, 5 Mar 2021 11:04:25 -0500
From:   "Theodore Ts'o" <tytso@....edu>
To:     Alexander Lochmann <alexander.lochmann@...dortmund.de>
Cc:     Horst Schirmeier <horst.schirmeier@...dortmund.de>,
        Jan Kara <jack@...e.cz>, Jan Kara <jack@...e.com>,
        linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC] inode.i_opflags - Usage of two different locking schemes

On Fri, Mar 05, 2021 at 04:35:47PM +0100, Alexander Lochmann wrote:
> 
> 
> 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.
> > 
> It is read in fs/dcache.c

So why is this unique to the mqueue inode then?  It might be helpful
to have explicit call stacks in the e-mail, in text form, when you
resend to LKML.

That's because the HTML file is ***huge*** (1.7Meg), and I'm having
trouble with my browser properly rendering it.  In any case, the html
claims to be showing the counter examples and I'm still stuck on the
*example*?

Cheers,

					- Ted