> +++ linux/fs/fcntl.c
> @@ -240,11 +240,15 @@ static int setfl(int fd, struct file * f
>
> lock_kernel();
> if ((arg ^ filp->f_flags) & FASYNC) {
> - if (filp->f_op && filp->f_op->fasync) {
> + if (filp->f_op && filp->f_op->unlocked_fasync)
> + error = filp->f_op->unlocked_fasync(fd, filp,
> + !!(arg & FASYNC));
> + else if (filp->f_op && filp->f_op->fasync) {
> error = filp->f_op->fasync(fd, filp, (arg & FASYNC) !=
0);
> if (error < 0)
> goto out;
No goto if you use unlocked_fasync?
> }
> + /* AK: no else error = -EINVAL here? */
> }
>
> filp->f_flags = (arg & SETFL_MASK) | (filp->f_flags & ~SETFL_MASK);
> --
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