new helper: file_inode(file)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index c6fa3bc..e23b4a2 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -708,7 +708,7 @@
{
loff_t ret;
- mutex_lock(&file->f_path.dentry->d_inode->i_mutex);
+ mutex_lock(&file_inode(file)->i_mutex);
switch (orig) {
case SEEK_CUR:
offset += file->f_pos;
@@ -725,7 +725,7 @@
default:
ret = -EINVAL;
}
- mutex_unlock(&file->f_path.dentry->d_inode->i_mutex);
+ mutex_unlock(&file_inode(file)->i_mutex);
return ret;
}