linux-kernel - Re: [PATCH v7 3/6] fs/dcache: Add sysctl parameter neg-dentry-limit as a soft limit on negative dentries

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Date:   Thu, 12 Jul 2018 09:56:05 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Waiman Long <longman@...hat.com>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Jonathan Corbet <corbet@....net>,
        "Luis R. Rodriguez" <mcgrof@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-mm@...ck.org, linux-doc@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Jan Kara <jack@...e.cz>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Ingo Molnar <mingo@...nel.org>,
        Miklos Szeredi <mszeredi@...hat.com>,
        Larry Woodman <lwoodman@...hat.com>,
        James Bottomley <James.Bottomley@...senPartnership.com>,
        "Wangkai (Kevin C)" <wangkai86@...wei.com>,
        Michal Hocko <mhocko@...nel.org>
Subject: Re: [PATCH v7 3/6] fs/dcache: Add sysctl parameter neg-dentry-limit
 as a soft limit on negative dentries

On Thu, Jul 12, 2018 at 12:46:02PM -0400, Waiman Long wrote:
> +int neg_dentry_limit;
> +EXPORT_SYMBOL_GPL(neg_dentry_limit);

Why are you exporting it?  What module needs this?