linux-kernel - Re: -tip: origin tree build failure (was: [GIT PULL] ext4 update for 2.6.37)

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Message-ID: <20101028171701.GA18368@elte.hu>
Date:	Thu, 28 Oct 2010 19:17:01 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Theodore Ts'o <tytso@....edu>, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: -tip: origin tree build failure (was: [GIT PULL] ext4 update for
 2.6.37)


* Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> On Thu, Oct 28, 2010 at 9:38 AM, Ingo Molnar <mingo@...e.hu> wrote:
> >
> > Point taken in any case, i'll read your edited changelog and will change the
> > template accordingly.
> >
> > Would this:
> >
> >  Upstream commit 5dabfc7 ("ext4: rename {exit,init}_ext4_*() to
> >  ext4_{exit,init}_*()"), breaks the build on all[yes/mod]config with
> >  CONFIG_EXT4_FS_XATTR disabled:
> >
> >  ...
> >
> > have been better?
> 
> Yes. Except for the kernel the default git commit abbreviation is borderline too 
> short. Seven hex-chars can easily alias with a few more pulls from me: git will 
> not give aliases at the time it gives a shorthand, but a month or two later the 
> abbreviated commit may no longer be unique.
> 
> So I suggest using --abbrev=12 or similar.

ok. A helper script i use does this:

   git log --pretty=format:"%h: %s" $@

I have added --abbrev=12. Might make sense to lengthen the %h default in upstream 
Git as well?

> What I ended up writing your commit as was this:
> 
>     ext4: fix compile with CONFIG_EXT4_FS_XATTR disabled
> 
>     Commit 5dabfc78dced ("ext4: rename {exit,init}_ext4_*() to
>     ext4_{exit,init}_*()") causes
> 
>       fs/ext4/super.c:4776: error: implicit declaration of function ‘ext4_init_xattr’
> 
>     when CONFIG_EXT4_FS_XATTR is disabled.
> 
>     It renamed init_ext4_xattr to ext4_init_xattr but forgot to update the
>     dummy definition in fs/ext4/xattr.h.
> 
>     Signed-off-by: Ingo Molnar <mingo@...e.hu>
>     Acked-by: "Theodore Ts'o" <tytso@....edu>
>     Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
> 
> but that's just me.

Ok, this indeed is much nicer to read.

Thanks,

	Ingo
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