linux-kernel - Re: [patch 2/2] Sort module list by pointer address to get coherent sleepable seq

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Date:	Wed, 15 Aug 2007 16:46:25 +0800
From:	Fengguang Wu <wfg@...l.ustc.edu.cn>
To:	Al Viro <viro@....linux.org.uk>
Cc:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Randy Dunlap <rddunlap@...l.org>,
	Martin Bligh <mbligh@...gle.com>
Subject: Re: [patch 2/2] Sort module list by pointer address to get
	coherent sleepable seq_file iterators

Al Viro,

Does this sounds like a good fix?
===

seq_file version fixes

- f_version is 'unsigned long', it's pointless to do more than that.
- m->version should not be reset when we are bumping up the buf size.

Signed-off-by: Fengguang Wu <wfg@...l.ustc.edu.cn>
---
 fs/seq_file.c            |    1 -
 include/linux/seq_file.h |    2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

--- linux-2.6.23-rc3.orig/include/linux/seq_file.h
+++ linux-2.6.23-rc3/include/linux/seq_file.h
@@ -18,7 +18,7 @@ struct seq_file {
 	size_t from;
 	size_t count;
 	loff_t index;
-	loff_t version;
+	unsigned long version;
 	struct mutex lock;
 	const struct seq_operations *op;
 	void *private;
--- linux-2.6.23-rc3.orig/fs/seq_file.c
+++ linux-2.6.23-rc3/fs/seq_file.c
@@ -134,7 +134,6 @@ ssize_t seq_read(struct file *file, char
 		if (!m->buf)
 			goto Enomem;
 		m->count = 0;
-		m->version = 0;
 	}
 	m->op->stop(m, p);
 	m->count = 0;

-
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