From 06b1e104b7ea1bf5145643de5a3fce28b831ca4c Mon Sep 17 00:00:00 2001
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Tue, 10 Aug 2010 18:01:33 -0700
Subject: [PATCH] vfs: clarify that nonseekable_open() will never fail

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: John Kacur <jkacur@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 fs/open.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/open.c b/fs/open.c
index b715d06fbe36..630715f9f73d 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -1031,7 +1031,9 @@ EXPORT_SYMBOL(generic_file_open);
 
 /*
  * This is used by subsystems that don't want seekable
- * file descriptors
+ * file descriptors. The function is not supposed to ever fail, the only
+ * reason it returns an 'int' and not 'void' is so that it can be plugged
+ * directly into file_operations structure.
  */
 int nonseekable_open(struct inode *inode, struct file *filp)
 {