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[PATCH] schedule removal of FUTEX_FD

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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: Thomas Gleixner <tglx@linutronix.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andrew Morton 2006-11-02 22:07:17 -08:00 committed by Linus Torvalds
parent f46c483357
commit 19c6b6ed3f
1 changed files with 7 additions and 0 deletions
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7
kernel/futex.c
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@ -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))