linux-kernel - Re: [PATCH] [v2] ext4: fix ext4_tune_sb

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Message-ID: <20260108041240.GA75173@macsyma.lan>
Date: Wed, 7 Jan 2026 23:12:40 -0500
From: "Theodore Tso" <tytso@....edu>
To: "Darrick J. Wong" <djwong@...nel.org>
Cc: Arnd Bergmann <arnd@...nel.org>, Andreas Dilger <adilger.kernel@...ger.ca>,
        Jan Kara <jack@...e.cz>, Arnd Bergmann <arnd@...db.de>,
        linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [v2] ext4: fix ext4_tune_sb_params padding

On Mon, Dec 08, 2025 at 10:03:10AM -0800, Darrick J. Wong wrote:
> 
> Hmm... given that the ondisk super field is a __u8[64], it feels weird
> to expose a __u8[68] field in the ioctl ABI and silently truncate the
> user's input if they try to use that many bytes.  I'd have enlarged the
> padding field but as Ted was both author and maintainer I'm ok with
> letting him have the final say.

Thanks, I've elected to the the original v1 version of the patch.

		     	     	    	- Ted