linux-kernel - Re: [PATCH] fread does not return negative on error

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Date:	Wed, 24 Jun 2009 12:53:51 +0200
From:	Christian Couder <christian.couder@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Junio C Hamano <gitster@...ox.com>,
	René Scharfe <rene.scharfe@...fire.ath.cx>,
	roel kluin <roel.kluin@...il.com>, git@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] fread does not return negative on error

Hi,

On Wed, Jun 24, 2009 at 10:18 AM, Ingo Molnar<mingo@...e.hu> wrote:
>
> * Junio C Hamano <gitster@...ox.com> wrote:
>
>> René Scharfe <rene.scharfe@...fire.ath.cx> writes:
>>
>> > the following patch is for git.  I just removed the unneeded check for
>> > res == 0 from your version.  Does it look OK?
>>
>> The patch looks good, and both of our in-tree users do error out
>> when the returned value is 0 (imap-send.c checks with "<= 0" which
>> looks a tad amateurish, though) correctly.
>>
>> Funny, there is no caller of this function in the original context
>> this bug originally found, which I think is linux-2.6/tools/perf
>> ;-).
>
> Hehe, yes :-)
>
> Background: when creating tools/perf/ i cherry-picked all the nice
> Git libraries into tools/perf/util/, to give a standard environment
> for all tooling things that might come up in the future.
>
> Some of those are not used yet but it looked more logical to pick up
> whole pieces - some already gained uses. For example config.c is not
> truly used yet, but very much expected to have a role in the future.
>
> ( The only invasive thing i had to do was the s/git_/perf_/ mass
>  rename across all the files - having 'git_' in perf looked
>  quite confusing. )
>
> And our general experience with the Git libraries in
> tools/perf/util/* is: we love them!
>
> For example parse-options.c is a striking improvement compared to
> getopt.h we used before, and all the other facilities are sane and
> straight to the point as well. So in this sense 'perf' is an ...
> interesting cross-discipline 'fork' of Git's generic libraries.
>
> The auto-generation of everything out of Documentation/*.txt is
> another thing we picked up, and that's very nice too.
>
> One bookeeping issue: i found few explicit credits in those files -
> so i noted in the changelog that i took them from Git and i noted
> the specific upstream Git sha1 when i copied them. Would be nice to
> update each file with names to make credit more explicit:

>From http://git.kernel.org/?p=linux/kernel/git/x86/linux-2.6-tip.git;a=tree;f=tools/perf;hb=HEAD
it looks like there may be some other files like builtin-help.c (and
perhaps some files in perf/Documentation/ too though there should be
some AUTHOR information already in them).

Thanks,
Christian.
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