switch signalfd4() to fget_light/fput_light

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/signalfd.c b/fs/signalfd.c
index 7ae2a574cb25a64902128f53832b317202dbee8f..9f35a37173de0de1f7fbd8d80ca8ad39b50e3782 100644 (file)
--- a/fs/signalfd.c
+++ b/fs/signalfd.c
@@ -269,12 +269,13 @@ SYSCALL_DEFINE4(signalfd4, int, ufd, sigset_t __user *, user_mask,
                if (ufd < 0)
                        kfree(ctx);
        } else {
-               struct file *file = fget(ufd);
+               int fput_needed;
+               struct file *file = fget_light(ufd, &fput_needed);
                if (!file)
                        return -EBADF;
                ctx = file->private_data;
                if (file->f_op != &signalfd_fops) {
-                       fput(file);
+                       fput_light(file, fput_needed);
                        return -EINVAL;
                }
                spin_lock_irq(&current->sighand->siglock);
@@ -282,7 +283,7 @@ SYSCALL_DEFINE4(signalfd4, int, ufd, sigset_t __user *, user_mask,
                spin_unlock_irq(&current->sighand->siglock);
 
                wake_up(&current->sighand->signalfd_wqh);
-               fput(file);
+               fput_light(file, fput_needed);
        }
 
        return ufd;