Re: [PATCH v2] rcu: fix a race in hlist_nulls_for_each_entry_rcumacro

[Eric Dumazet]

On Tue, 2013-05-28 at 13:10 +0400, Roman Gushchin wrote:
> On 28.05.2013 04:12, Eric Dumazet wrote:

> > Adding a barrier() is probably what we want.
> 
> I agree, inserting barrier() is also a correct and working fix.

Yeah, but I can not find a clean way to put it inside the "for (;;)"

for (barrier();;)  ->

error: expected expression before â__asm__â

No user currently does :

if (condition)
	hlist_nulls_for_each_entry_rcu(tpos, pos, head, member)

But who knows...


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