linux-kernel - Re: [PATCH -v2] ext4: don't BUG if kernel subsystems dirty pages without asking ext4 first

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Date:   Fri, 25 Feb 2022 16:08:22 -0500
From:   "Theodore Ts'o" <tytso@....edu>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     Lee Jones <lee.jones@...aro.org>, linux-ext4@...r.kernel.org,
        Christoph Hellwig <hch@....de>,
        Dave Chinner <dchinner@...hat.com>,
        Goldwyn Rodrigues <rgoldwyn@...e.com>,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        Bob Peterson <rpeterso@...hat.com>,
        Damien Le Moal <damien.lemoal@....com>,
        Andreas Gruenbacher <agruenba@...hat.com>,
        Ritesh Harjani <riteshh@...ux.ibm.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Johannes Thumshirn <jth@...nel.org>, linux-xfs@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, cluster-devel@...hat.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH -v2] ext4: don't BUG if kernel subsystems dirty pages
 without asking ext4 first

On Fri, Feb 25, 2022 at 12:51:28PM -0800, Eric Biggers wrote:
> > 
> > [1] https://www.spinics.net/lists/linux-mm/msg142700.html
> 
> Can you use a lore link
> (https://lore.kernel.org/linux-mm/20180103100430.GE4911@quack2.suse.cz/T/#u)?

Sure, thanks for finding the lore link!  I did try searching for it
last night, but for some reason I wasn't able to surface it.

> > +			/*
> > +			 * Should never happen but for buggy code in
> > +			 * other subsystemsa that call
> 
> subsystemsa => subsystems

Already fixed in my local version of the patch.

> > +			 * [1] https://www.spinics.net/lists/linux-mm/msg142700.html
> 
> Likewise, lore link here.

Ack.

						- Ted