[PATCH 0/12 V3] ipc: cleanups & bugfixes, rhashtable update

[Manfred Spraul]

Hi,

I have added all all review findings and rediffed the patches

- patch #1-#6: Fix syzcall findings & further race cleanups
	patch #1 has an updated subject/comment
	patch #2 contains the squashed result of Dmitrys change and my
	own updates.
	patch #6 is replaced by the proposal from Davidlohr
- patch #7-#10: rhashtable improvement from Davidlohr
- patch #11: A variable rename patch: id/lid/idx/uid were a mess
- patch #12: change a return code from int to bool, side effect of the
	refcount_t introduction.

@Andrew:
Can you merge the patches into -mm/next?

I have not seen any issues in my tests.

--
	Manfred