generic ipi function calls: wait on alloc failure fallback

When a GFP_ATOMIC allocation fails, it falls back to allocating the
data on the stack and converting it to a waiting call.

Make sure we actually wait in this case.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/smp.c b/kernel/smp.c
index ab10793b0707d6ced7f0d4fe91328200d747bbfd..462c785ca1eee80dea958541edf19786259c88e6 100644 (file)
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -312,6 +312,7 @@ int smp_call_function_mask(cpumask_t mask, void (*func)(void *), void *info,
        if (!data) {
                data = &d;
                data->csd.flags = CSD_FLAG_WAIT;
+               wait = 1;
        }
 
        spin_lock_init(&data->lock);