On Fri, Dec 13, 2024 at 09:45:33AM -0800, Suren Baghdasaryan wrote: > On Fri, Dec 13, 2024 at 1:57 AM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > > > On Thu, Dec 12, 2024 at 08:48:52PM -0800, Suren Baghdasaryan wrote: > > > > > I'm not sure if this is the best way to deal with this circular > > > dependency. Any other ideas? > > > > Move the waiting into an out-of-line slow-path? > > > > if (atomic_read(&vma->refcnt) != 2) > > __vma_write_start_wait(mm, vma); > > The problem is not a function but the addition of struct rcuwait into Durr, in my brain that was a struct task_struct pointer, totally forgot we had a type there. Yeah, as Willy says, move it to compiler_types.h or somesuch.
