hrtimer: fix hrtimer_init_sleeper() users

this patch:

 commit 37bb6cb4097e29ffee970065b74499cbf10603a3
 Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
 Date:   Fri Jan 25 21:08:32 2008 +0100

     hrtimer: unlock hrtimer_wakeup

Broke hrtimer_init_sleeper() users. It forgot to fix up the futex
caller of this function to detect the failed queueing and messed up
the do_nanosleep() caller in that it could leak a TASK_INTERRUPTIBLE
state.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/futex.c b/kernel/futex.c
index db9824d..0edd314 100644 (file)
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1252,6 +1252,8 @@ static int futex_wait(u32 __user *uaddr, struct rw_semaphore *fshared,
                        t.timer.expires = *abs_time;
 
                        hrtimer_start(&t.timer, t.timer.expires, HRTIMER_MODE_ABS);
+                       if (!hrtimer_active(&t.timer))
+                               t.task = NULL;
 
                        /*
                         * the timer could have already expired, in which

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index bd5d6b5..1069998 100644 (file)
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1315,6 +1315,8 @@ static int __sched do_nanosleep(struct hrtimer_sleeper *t, enum hrtimer_mode mod
 
        } while (t->task && !signal_pending(current));
 
+       __set_current_state(TASK_RUNNING);
+
        return t->task == NULL;
 }