1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index bc84e125c6bc..224f271d8cbe 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -2162,13 +2162,12 @@ static int fionbio(struct file *file, int __user *p)
         if (get_user(nonblock, p))
                 return -EFAULT;
 
-        /* file->f_flags is still BKL protected in the fs layer - vomit */
-        lock_kernel();
+        spin_lock(&file->f_lock);
         if (nonblock)
                 file->f_flags |= O_NONBLOCK;
         else
                 file->f_flags &= ~O_NONBLOCK;
-        unlock_kernel();
+        spin_unlock(&file->f_lock);
         return 0;
 }