From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751470AbdBXUt6 (ORCPT <rfc822;w@1wt.eu>);
        Fri, 24 Feb 2017 15:49:58 -0500
Received: from zeniv.linux.org.uk ([195.92.253.2]:52838 "EHLO
        ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1751219AbdBXUtu (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Fri, 24 Feb 2017 15:49:50 -0500
Date: Fri, 24 Feb 2017 20:49:41 +0000
From: Al Viro <viro@ZenIV.linux.org.uk>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        Chris Mason <clm@fb.com>, linux-kernel@vger.kernel.org,
        linux-fsdevel@vger.kernel.org, David Howells <dhowells@redhat.com>,
        elena.reshetova@intel.com, ishkamiel@gmail.com, dwindsor@gmail.com,
        gregkh@linuxfoundation.org
Subject: Re: [RFC][PATCH 06/10] fs: Rework i_count
Message-ID: <20170224204941.GO29622@ZenIV.linux.org.uk>
References: <20170224154329.478276481@infradead.org>
 <20170224162044.267733351@infradead.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20170224162044.267733351@infradead.org>
User-Agent: Mutt/1.7.1 (2016-10-04)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Fri, Feb 24, 2017 at 04:43:35PM +0100, Peter Zijlstra wrote:

>  {
> -	return atomic_read(&inode->i_count);
> +	int i_count = atomic_read(&inode->i_count);
> +
> +	/*
> +	 * In order to preserve the 'old' usage-count semantics, remove the
> +	 * reference that the hash-table has.

What does it have to do with hashtable, when you are bumping it for _all_
inodes, hashed or not hashed?