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521eae8326
In preparation for changing the node_refs lock to a spinlock, move the cleanup of NodeRefInfo in update_ref() so that it occurs without the node_refs lock held. This avoids dropping an Arc<Node> with the lock held. Furthermore, the NodeDeath field is kept in the NodeRefInfo to be dropped outside the lock as well. The removal from the rbtree is updated to use remove_node(), which keeps the rbtree node allocation until after node_refs is unlocked as well. This is not strictly necessary as it just moves a kfree() outside the lock, but there's no reason to invoke the kfree() under the lock if we can easily avoid it, so avoid it. Reviewed-by: Matthew Maurer <mmaurer@google.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://patch.msgid.link/20260615-binder-noderefs-spin-v3-2-3235f5a3e0a0@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>