linux-kernel - Re: [PATCH 15/23] seq_file: switch over direct seq_read method calls to seq_read

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Message-ID: <20200729205919.GB1236929@ZenIV.linux.org.uk>
Date:   Wed, 29 Jul 2020 21:59:19 +0100
From:   Al Viro <viro@...iv.linux.org.uk>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Christoph Hellwig <hch@....de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Kees Cook <keescook@...omium.org>,
        Iurii Zaikin <yzaikin@...gle.com>,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 15/23] seq_file: switch over direct seq_read method calls
 to seq_read_iter

On Fri, Jul 17, 2020 at 11:09:13PM +0200, Thomas Gleixner wrote:
> 
> Needs some thought and maybe some cocci help from Julia, but that's way
> better than this brute force sed thing which results in malformed crap
> like this:
> 
> static const struct file_operations debug_stats_fops = {
> 	.open		= debug_stats_open,
> 	.read_iter		= seq_read_iter,
> 	.llseek		= seq_lseek,
> 	.release	= single_release,
> };
> 
> and proliferates the copy and paste voodoo programming.

Better copy and paste than templates, IMO; at least the former is
greppable; fucking DEFINE_..._ATRIBUTE is *NOT*, especially due
to the use of ##.