linux-kernel - Re: [PATCH 2/2] fs: proc/stat: use usual seq_file ops rather than single

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Message-ID: <alpine.DEB.2.02.1406121358390.8305@chino.kir.corp.google.com>
Date:	Thu, 12 Jun 2014 13:59:28 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
cc:	Ian Kent <raven@...maw.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@...radead.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Andrea Righi <andrea@...terlinux.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	Hendrik Brueckner <brueckner@...ux.vnet.ibm.com>,
	Thorsten Diehl <thorsten.diehl@...ibm.com>,
	"Elliott, Robert (Server Storage)" <Elliott@...com>,
	Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH 2/2] fs: proc/stat: use usual seq_file ops rather than
 single_open

On Thu, 12 Jun 2014, Heiko Carstens wrote:

> Yes, that doesn't make any sense. I wrote the patch together in a hurry and
> didn't think much about it.
> So below is the what I think most simple conversion to a vmalloc fallback
> approach for seq files. However the question remains if this seems to be an
> acceptable approach at all...
> 

I think the approach is fine.  We do now have a generic kvfree() function 
defined in mm.h that will handle the freeing, though, determined by 
is_vmalloc_addr() so seq_free() is no longer necessary.
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