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Date:   Fri, 9 Oct 2020 11:58:43 -0400
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     Sedat Dilek <sedat.dilek@...il.com>
Cc:     Ritesh Harjani <riteshh@...ux.ibm.com>, linux-ext4@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, jack@...e.cz,
        anju@...ux.vnet.ibm.com,
        "Aneesh Kumar K . V" <aneesh.kumar@...ux.ibm.com>
Subject: Re: [PATCH 1/1] ext4: Fix bs < ps issue reported with dioread_nolock
 mount opt

On Fri, Oct 09, 2020 at 12:18:23PM +0200, Sedat Dilek wrote:
> > > Fixes: tag should be 12 digits (see [1]).
> > > ( Seen while walking through ext-dev Git commits. )
> >
> > Thanks Sedat, I guess it should be minimum 12 chars [1]

Right, the point is that the commit ID referenced should be at least
12 bytes to avoid ambiguity.  There's nothing really wrong with using
more than 12 bytes.  I sometimes use 16, myself.  It does look like
there is a (mostly harmless) inconsistency between lines 177 and 183
of submitting-patches.rst.

> In my ~/.gitconfig:
> 
> [core]
>        abbrev = 12
> 
> # Check for 'Fixes:' tag used in the Linux-kernel development process
> (Thanks Kalle Valo).2
> # Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst
> # Usage: $ git log --format=fixes | head -5
> [pretty]
>    fixes = Fixes: %h (\"%s\")
> 
> Hope this is useful for others.

Personally, I find cutting and pasting the full SHA-1 hash and
description, and then cutting down the hash in emacs to be more
convenient, since I generaslly have the git commit from "git log" in
terminal window anyway.  But whatever works for each developer.  :-)

       	      	      	    	 	    - Ted

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