Jeff Roberson b300d706ea - Use a lockmgr lock rather than a mtx to protect dirhash. This lock ... may be held for the duration of the various dirhash operations which avoids many complex unlock/lock/revalidate sequences. - Permit shared locks on lookup. To protect the ip->i_dirhash pointer we use the vnode interlock in the shared case. Callers holding the exclusive vnode lock can run without fear of concurrent modification to i_dirhash. - Hold an exclusive dirhash lock when creating the dirhash structure for the first time or when re-creating a dirhash structure which has been recycled. Tested by: kris, pho		2008-04-11 09:48:12 +00:00
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ffs	Optimize lockmgr in order to get rid of the pool mutex interlock, of the	2008-04-06 20:08:51 +00:00
ufs	- Use a lockmgr lock rather than a mtx to protect dirhash. This lock	2008-04-11 09:48:12 +00:00