linux-kernel - [PATCH 15/15] vfs: make no

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Date:	Tue, 14 Sep 2010 22:22:43 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-kernel@...r.kernel.org
Cc:	Arnd Bergmann <arnd@...db.de>,
	Christoph Hellwig <hch@...radead.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	linux-fsdevel@...r.kernel.org
Subject: [PATCH 15/15] vfs: make no_llseek the default

All file operations now have an explicit .llseek
operation pointer, so we can change the default
action for future code.

This makes changes the default from default_llseek
to no_llseek, which always returns -ESPIPE if
a user tries to seek on a file without a .llseek
operation.

The name of the default_llseek function remains
unchanged, if anyone thinks we should change it,
please speak up.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Cc: Christoph Hellwig <hch@...radead.org>
Cc: Al Viro <viro@...iv.linux.org.uk>
Cc: linux-fsdevel@...r.kernel.org
---
 fs/read_write.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/fs/read_write.c b/fs/read_write.c
index fd09f61..e757ef2 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -156,7 +156,6 @@ loff_t vfs_llseek(struct file *file, loff_t offset, int origin)
 
 	fn = no_llseek;
 	if (file->f_mode & FMODE_LSEEK) {
-		fn = default_llseek;
 		if (file->f_op && file->f_op->llseek)
 			fn = file->f_op->llseek;
 	}
-- 
1.7.1

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