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From: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
To: Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
Cc: trivial@kernel.org, linux-fsdevel@vger.kernel.org,
	apw@shadowen.org, rdunlap@xenotime.net, jschopp@austin.ibm.com,
	Linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 8/9] bfs: remove multiple assignments
Date: Sun, 27 Jan 2008 02:48:53 +0300	[thread overview]
Message-ID: <479BC6E5.5000409@gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.61.0801261833270.1966@ginsburg.homenet>

Tigran Aivazian wrote:
> On Sat, 26 Jan 2008, Dmitri Vorobiev wrote:
>> -    inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
>> +    inode->i_mtime = CURRENT_TIME_SEC;
>> +    inode->i_atime = CURRENT_TIME_SEC;
>> +    inode->i_ctime = CURRENT_TIME_SEC;
> 
> multiple assignments like "x = y = z = value;" can potentially
> (depending on the compiler and arch) be faster than "x = value; y =
> value; z=value;"
> 
> I am surprized that this script complains about them as it is a
> perfectly valid thing to do in C.

I think it seems wise to ask the maintainers of checkpatch.pl to
comment on that. I'm Cc:ing them now.

Thanks,

Dmitri


       reply	other threads:[~2008-01-26 23:49 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1201296027-6900-1-git-send-email-dmitri.vorobiev@gmail.com>
     [not found] ` <1201296027-6900-9-git-send-email-dmitri.vorobiev@gmail.com>
     [not found]   ` <Pine.LNX.4.61.0801261833270.1966@ginsburg.homenet>
2008-01-26 23:48     ` Dmitri Vorobiev [this message]
2008-01-28  7:02       ` Joel Schopp
2008-01-30 13:06         ` Al Viro
2008-01-30 13:36           ` Dmitri Vorobiev

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