locks: update comments that refer to inode->i_flock

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
diff --git a/fs/locks.c b/fs/locks.c
index 2fc36b3..4d0d411 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -2212,7 +2212,7 @@
 	 */
 	/*
 	 * we need that spin_lock here - it prevents reordering between
-	 * update of inode->i_flock and check for it done in close().
+	 * update of i_flctx->flc_posix and check for it done in close().
 	 * rcu_read_lock() wouldn't do.
 	 */
 	spin_lock(&current->files->file_lock);