Re: [PATCH]IPC locks breaking down with RCU

[mingming cao]

Hugh Dickins wrote:
> 
> I'm ignorant of RCU, and my mind goes mushy around memory barriers,
> but I expect you've consulted the best there; and I'll be wanting to
> refer to this implementation as a nice example of how to use RCU.

Yes the RCU patch author Dipankar has already reviewed the memory
barriers in ipclock patch.  

> Now delete spinlock_t ary and all references to it: only grow_ary
> is using it, and it's already protected by sem, and we'd be in
> trouble with concurrent allocations if it were not.
> 
Oh, right. grow_ary does not need spinlock_t ary anymore.:-)