linux-kernel - Re: [PATCH 2/2] fs/dcache: Make negative dentries easier to be reclaimed

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Message-Id: <20180828160150.9a45ee293c92708edb511eab@linux-foundation.org>
Date:   Tue, 28 Aug 2018 16:01:50 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Waiman Long <longman@...hat.com>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Jonathan Corbet <corbet@....net>, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-doc@...r.kernel.org, "Luis R. Rodriguez" <mcgrof@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Jan Kara <jack@...e.cz>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Ingo Molnar <mingo@...nel.org>,
        Miklos Szeredi <mszeredi@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        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 2/2] fs/dcache: Make negative dentries easier to be
 reclaimed


Another pet peeve ;)

On Tue, 28 Aug 2018 13:19:40 -0400 Waiman Long <longman@...hat.com> wrote:

>  /**
> + * list_lru_add_head: add an element to the lru list's head
> + * @list_lru: the lru pointer
> + * @item: the item to be added.
> + *
> + * This is similar to list_lru_add(). The only difference is the location
> + * where the new item will be added. The list_lru_add() function will add

People often use the term "the foo() function".  I don't know why -
just say "foo()"!

> + * the new item to the tail as it is the most recently used one. The
> + * list_lru_add_head() will add the new item into the head so that it

Ditto.

"to the head"

> + * will the first to go if a shrinker is running. So this function should

"will be the"

> + * only be used for less important item that can be the first to go if

"items"

> + * the system is under memory pressure.
> + *
> + * Return value: true if the list was updated, false otherwise
> + */