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[ Upstream commitc56f9ec8b2] Use refcount_t rather than atomic_t in afs to make use of the count checking facilities provided. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://lore.kernel.org/r/165911277768.3745403.423349776836296452.stgit@warthog.procyon.org.uk/ # v1 Stable-dep-of:9a6b294ab4("afs: Fix use-after-free due to get/remove race in volume tree") Signed-off-by: Sasha Levin <sashal@kernel.org>