linux-kernel - Re: [PATCH 00/11] fs/dcache: Limit # of negative dentries

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Message-ID: <20200228153951.GH29971@bombadil.infradead.org>
Date:   Fri, 28 Feb 2020 07:39:51 -0800
From:   Matthew Wilcox <willy@...radead.org>
To:     Waiman Long <longman@...hat.com>
Cc:     Ian Kent <raven@...maw.net>, Andreas Dilger <adilger@...ger.ca>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Jonathan Corbet <corbet@....net>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Iurii Zaikin <yzaikin@...gle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux FS Devel <linux-fsdevel@...r.kernel.org>,
        linux-doc@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Eric Biggers <ebiggers@...gle.com>,
        Dave Chinner <david@...morbit.com>,
        Eric Sandeen <sandeen@...hat.com>
Subject: Re: [PATCH 00/11] fs/dcache: Limit # of negative dentries

On Fri, Feb 28, 2020 at 10:32:02AM -0500, Waiman Long wrote:
> On 2/27/20 10:34 PM, Matthew Wilcox wrote:
> > The canonical argument in favour of negative dentries is to improve
> > application startup time as every application searches the library path
                                                               ^^^^^^^
> > for the same libraries.  Only they don't do that any more:
                 ^^^^^^^^^
>
> It is the shell that does the path search, not the command itself.