diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/liveupdate/luo_flb.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/liveupdate/luo_flb.c b/kernel/liveupdate/luo_flb.c index f52e8114837e..cf4a8f854c83 100644 --- a/kernel/liveupdate/luo_flb.c +++ b/kernel/liveupdate/luo_flb.c @@ -89,13 +89,18 @@ struct luo_flb_link { static struct luo_flb_private *luo_flb_get_private(struct liveupdate_flb *flb) { struct luo_flb_private *private = &ACCESS_PRIVATE(flb, private); + static DEFINE_SPINLOCK(luo_flb_init_lock); + if (smp_load_acquire(&private->initialized)) + return private; + + guard(spinlock)(&luo_flb_init_lock); if (!private->initialized) { mutex_init(&private->incoming.lock); mutex_init(&private->outgoing.lock); INIT_LIST_HEAD(&private->list); private->users = 0; - private->initialized = true; + smp_store_release(&private->initialized, true); } return private; |