linux-kernel - RE: [tip:locking/core] refcount_t: Introduce a special purpose refcount type

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Date:   Tue, 14 Feb 2017 07:29:38 +0000
From:   "Reshetova, Elena" <elena.reshetova@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
        "hpa@...or.com" <hpa@...or.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "mingo@...nel.org" <mingo@...nel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>
CC:     "linux-tip-commits@...r.kernel.org" 
        <linux-tip-commits@...r.kernel.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "keescook@...omium.org" <keescook@...omium.org>,
        "dwindsor@...il.com" <dwindsor@...il.com>,
        "ishkamiel@...il.com" <ishkamiel@...il.com>
Subject: RE: [tip:locking/core] refcount_t: Introduce a special purpose
 refcount type

> Subject: refcount: Out-of-line everything
> From: Peter Zijlstra <peterz@...radead.org>
> Date: Fri Feb 10 16:27:52 CET 2017
> 
> Linus asked to please make this real C code.

Perhaps a completely stupid question, but I am going to ask anyway since only this way I can learn.
What a real difference it makes? Or are we talking more about styling and etc.? Is it because of size concerns?
This way it is certainly now done differently than rest of atomic and kref... 

Best Regards,
Elena.