Robert Watson d461245f5d Switch from using an sx lock to a mutex for the mac_portacl rule chain: ... the sx lock was used previously because we might sleep allocating additional memory by using auto-extending sbufs. However, we no longer do this, instead retaining the user-submitted rule string, so mutexes can be used instead. Annotate the reason for not using the sbuf-related rule-to-string code with a comment. Switch to using TAILQ_CONCAT() instead of manual list copying, as it's O(1), reducing the rule replacement step under the mutex from O(2N) to O(2). Remove now uneeded vnode-related includes. MFC after: 2 weeks		2004-12-06 19:43:45 +00:00
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mac_portacl.c	Switch from using an sx lock to a mutex for the mac_portacl rule chain:	2004-12-06 19:43:45 +00:00