linux-kernel - Re: [PATCH 05/18] fs: inode split IO and LRU lists

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Date:	Fri, 8 Oct 2010 10:16:17 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Dave Chinner <david@...morbit.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/18] fs: inode split IO and LRU lists

> -	struct list_head	i_list;		/* backing dev IO list */
> +	struct list_head	i_io;		/* backing dev IO list */
> +	struct list_head	i_lru;		/* backing dev IO list */

a) that pair of comments would be disqualified in IOCCC ;-)
b) have a pity on folks who will have to talk about the code.  I mean,
how would you say that?  Ai-Ai-Oh?

> +extern struct percpu_counter nr_inodes;
> +extern struct percpu_counter nr_inodes_unused;

Ehh...  At least take that to fs/internal.h.  Preferably don't expose at
all.

> -				list_del(&inode->i_list);
> -				list_add(&inode->i_list, &bdi->wb.b_dirty);
> +				list_del(&inode->i_io);
> +				list_add(&inode->i_io, &bdi->wb.b_dirty);

list_move()?  Ditto for the next few.  And, while that's not directed
at you, this kind of loops is Not Nice(tm)...
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