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Commit 19c6b6ed authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds
Browse files

[PATCH] schedule removal of FUTEX_FD 



Apparently FUTEX_FD is unfixably racy and nothing uses it (or if it does, it
shouldn't).

Add a warning printk, give any remaining users six months to migrate off it.

Cc: Ulrich Drepper <drepper@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent f46c4833

kernel/futex.c

+7 −0
Original line number Diff line number Diff line
@@ -1507,6 +1507,13 @@ static int futex_fd(u32 __user *uaddr, int signal) 
	struct futex_q *q;

	struct file *filp;

	int ret, err;

	static unsigned long printk_interval;



	if (printk_timed_ratelimit(&printk_interval, 60 * 60 * 1000)) {

		printk(KERN_WARNING "Process `%s' used FUTEX_FD, which "

		    	"will be removed from the kernel in June 2007\n",

			current->comm);

	}



	ret = -EINVAL;

	if (!valid_signal(signal))