snb 7f32f3f2a1 Add vm_lowmem event handler for dirhash. This will cause dirhashes to be ... deleted when the system is low on memory. This ought to allow an increase to vfs.ufs.dirhash_maxmem on machines that have lots of memory, without degrading performance by having too much memory reserved for dirhash when other things need it. The default value for dirhash_maxmem is being kept at 2MB for now, though. This work was mostly done during the 2008 Google Summer of Code. Approved by: dwmalone (mentor), re MFC after: 3 months		2009-06-03 09:44:22 +00:00
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ffs	Handle lock recursion differenty by always checking against LO_RECURSABLE	2009-06-02 13:03:35 +00:00
ufs	Add vm_lowmem event handler for dirhash. This will cause dirhashes to be	2009-06-03 09:44:22 +00:00