linux-kernel - Re: [PATCH] vfs: Turn the unlinked inode counter into a percpu counter

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Date:	Mon, 14 Jul 2014 08:54:07 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	Lukáš Czerner <lczerner@...hat.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Al Viro <viro@...iv.linux.org.uk>,
	Miklos Szeredi <mszeredi@...e.cz>
Subject: Re: [PATCH] vfs: Turn the unlinked inode counter into a percpu counter

Andi Kleen <ak@...ux.intel.com> writes:
> >  	fsnotify_inode_delete(inode);
>> > -	if (!inode->i_nlink) {
>> > -		WARN_ON(atomic_long_read(&inode->i_sb->s_remove_count) == 0);
>> 
>> This is not mentioned in the description, but I guess it makes sense since
>> it'd be quite expensive.
>
> Yes. I guess we could still check the local counter. I can re-add that.

Actually it's not possible, because the original count could be on
another CPU.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only
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