[patch 6/6] vfs: clarify that nonseekable_open() will never fail

[akpm@linux-foundation.org]

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

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>
---

 fs/open.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff -puN fs/open.c~vfs-clarify-that-nonseekable_open-will-never-fail fs/open.c
--- a/fs/open.c~vfs-clarify-that-nonseekable_open-will-never-fail
+++ a/fs/open.c
@@ -1198,7 +1198,9 @@ 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)
 {
_