[tip:x86/cleanups] x86, msr: Use file_inode(), not f_mapping->host

[tip-bot for Andre Richter]

Commit-ID:  122498738417c73943b71294c60ec34fc110f5d6
Gitweb:     http://git.kernel.org/tip/122498738417c73943b71294c60ec34fc110f5d6
Author:     Andre Richter <andre.o.richter@xxxxxxxxx>
AuthorDate: Tue, 8 Oct 2013 11:22:22 +0200
Committer:  H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Tue, 8 Oct 2013 12:01:29 -0700

x86, msr: Use file_inode(), not f_mapping->host

As discussed in [1], exchange f_mapping->host with file_inode().  This
is a bug, but happens to be non-manifest in this case.

[1] http://lkml.kernel.org/r/20131007190357.GA13318@xxxxxxxxxxxxxxxxxx

Signed-off-by: Andre Richter <andre.o.richter@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1381224142-3267-1-git-send-email-andre.o.richter@xxxxxxxxx
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
---
 arch/x86/kernel/msr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index 88458fa..05266b5 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -46,7 +46,7 @@ static struct class *msr_class;
 static loff_t msr_seek(struct file *file, loff_t offset, int orig)
 {
 	loff_t ret;
-	struct inode *inode = file->f_mapping->host;
+	struct inode *inode = file_inode(file);
 
 	mutex_lock(&inode->i_mutex);
 	switch (orig) {
--
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