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

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Date:	Thu, 28 Oct 2010 10:00:26 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Ingo Molnar <mingo@...e.hu>
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)

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.

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.

                   Linus
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