From: Arnd Bergmann <arnd@arndb.de>
Date: Wed, 7 Jul 2010 21:10:11 +0000 (+0200)
Subject: vfs: make no_llseek the default
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=776c163b1b93c8dfa5edba885bc2bfbc2d228a5f;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

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@arndb.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
---

diff --git a/fs/read_write.c b/fs/read_write.c
index fd09f6166ccf..e757ef26e4ce 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;
 	}