linux-kernel - Re: [-mm patch] CACHEFILES must depend on PROC

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Message-Id: <20061121203543.5d1c4f85.randy.dunlap@oracle.com>
Date:	Tue, 21 Nov 2006 20:35:43 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Adrian Bunk <bunk@...sta.de>
Cc:	Andrew Morton <akpm@...l.org>, David Howells <dhowells@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [-mm patch] CACHEFILES must depend on PROC_FS

On Wed, 22 Nov 2006 05:17:36 +0100 Adrian Bunk wrote:

> I got the following compile error with CONFIG_PROC_FS=n:
> 
> <--  snip  -->
> 
> ...
>   CC      fs/cachefiles/cf-main.o
> /home/bunk/linux/kernel-2.6/linux-2.6.19-rc5-mm2/fs/cachefiles/cf-main.c: In function 'cachefiles_init':
> /home/bunk/linux/kernel-2.6/linux-2.6.19-rc5-mm2/fs/cachefiles/cf-main.c:77: error: 'proc_root_fs' undeclared (first use in this function)
> /home/bunk/linux/kernel-2.6/linux-2.6.19-rc5-mm2/fs/cachefiles/cf-main.c:77: error: (Each undeclared identifier is reported only once
> /home/bunk/linux/kernel-2.6/linux-2.6.19-rc5-mm2/fs/cachefiles/cf-main.c:77: error: for each function it appears in.)
> make[3]: *** [fs/cachefiles/cf-main.o] Error 1
> 
> <--  snip  -->
> 
> This patch adds the missing dependency of CACHEFILES on PROC_FS.
> 
> Signed-off-by: Adrian Bunk <bunk@...sta.de>
> 
> --- linux-2.6.19-rc5-mm2/fs/Kconfig.old	2006-11-22 02:48:36.000000000 +0100
> +++ linux-2.6.19-rc5-mm2/fs/Kconfig	2006-11-22 02:49:01.000000000 +0100
> @@ -654,6 +654,7 @@ config FSCACHE
>  
>  config CACHEFILES
>  	tristate "Filesystem caching on files"
> +	depends on PROC_FS
>  	select FSCACHE
>  	help
>  	  This permits use of a mounted filesystem as a cache for other

I made that same patch (on linux-fsdevel).  David Howells replied:

Randy Dunlap <randy.dunlap@...cle.com> wrote:

> CACHEFILES uses PROC_FS, so make it a Kconfig depends.

Thanks, but the new and improved CacheFiles doesn't use procfs as Christoph
Hellwig objects to such a practice.  In any case, Andrew Morton has dropped it
from -mm as it's now obsolete.


---
~Randy
-
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