On Thu, Apr 15, 2010 at 6:36 PM, Patrick McHardy <kaber@xxxxxxxxx> wrote: > Changli Gao wrote: >> On Tue, Apr 13, 2010 at 9:25 PM, Patrick McHardy <kaber@xxxxxxxxx> wrote: >>>> Yes, that is why vmalloc() is perfect for this case. No extra memory for >>>> management, but one pointer for each page of memory. >>> I agree, if it works for conntrack, it certainly also works for >>> nfnetlink_queue. >>> >> >> I need to allocate memory in atomic section, so vmalloc() can't be used. :( > > Why? > instance_create() is called in rcu read-side critical section, and the whole body of this function is protected by the spinlock instances_lock. All these make memory allocation for queue instances should be atomic. -- Regards， Changli Gao(xiaosuo@xxxxxxxxx) -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
