kernfs: don't bother with timestamp truncation

kernfs users are not going to have limited
range or granularity anyway.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/kernfs/inode.c

@@ -160,9 +160,9 @@ static inline void set_inode_attr(struct inode *inode,
 {
 	inode->i_uid = attrs->ia_uid;
 	inode->i_gid = attrs->ia_gid;
-	inode->i_atime = timestamp_truncate(attrs->ia_atime, inode);
-	inode->i_mtime = timestamp_truncate(attrs->ia_mtime, inode);
-	inode->i_ctime = timestamp_truncate(attrs->ia_ctime, inode);
+	inode->i_atime = attrs->ia_atime;
+	inode->i_mtime = attrs->ia_mtime;
+	inode->i_ctime = attrs->ia_ctime;
 }
 
 static void kernfs_refresh_inode(struct kernfs_node *kn, struct inode *inode)