linux-kernel - Re: [PATCH] tty: shrink the size of struct tty

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <2023082531-daylight-vitally-fcb3@gregkh>
Date:   Fri, 25 Aug 2023 17:34:31 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-serial@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Jiri Slaby <jirislaby@...nel.org>
Subject: Re: [PATCH] tty: shrink the size of struct tty_struct by 40 bytes

On Fri, Aug 25, 2023 at 05:28:20PM +0200, Greg Kroah-Hartman wrote:
>  	bool hw_stopped;
> -	unsigned int receive_room;
> +	bool closing;
>  	int flow_change;

Note, "flow_change" really only has 2 values, 1 or 2, so it could be a
boolean, or a u8 at the worse (both take the same amount of space).  But
changing that here doesn't affect the overall size of the structure,
just increases the hole at this location in the structure, so it's not a
big deal at this point in time.

thanks,

greg k-h