tree d273536aaea91cf4817dd305450f327ebb37059f
parent 65d87fe68abf2fc226a9e96be61160f65d6b4680
author David Howells <dhowells@redhat.com> 1336730216 +0100
committer David Howells <dhowells@redhat.com> 1336730216 +0100

KEYS: Permit in-place link replacement in keyring list

Make use of the previous patch that makes the garbage collector perform RCU
synchronisation before destroying defunct keys.  Key pointers can now be
replaced in-place without creating a new keyring payload and replacing the
whole thing as the discarded keys will not be destroyed until all currently
held RCU read locks are released.

If the keyring payload space needs to be expanded or contracted, then a
replacement will still need allocating, and the original will still have to be
freed by RCU.

Signed-off-by: David Howells <dhowells@redhat.com>