linux-kernel - Re: [RFC][PATCH 06/10] fs: Rework i

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Date:   Fri, 24 Feb 2017 20:49:41 +0000
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Chris Mason <clm@...com>, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, David Howells <dhowells@...hat.com>,
        elena.reshetova@...el.com, ishkamiel@...il.com, dwindsor@...il.com,
        gregkh@...uxfoundation.org
Subject: Re: [RFC][PATCH 06/10] fs: Rework i_count

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?