keys: Hoist locking out of __key_link_begin()
Hoist the locking of out of __key_link_begin() and into its callers. This
is necessary to allow the upcoming key_move() operation to correctly order
taking of the source keyring semaphore, the destination keyring semaphore
and the keyring serialisation lock.
Signed-off-by:
David Howells <dhowells@redhat.com>
parent
eb0f68cb
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