iedowse 991ee42593 Return a locked struct buf from ufsdirhash_lookup() to avoid one
extra getblk/brelse sequence for each lookup. We already had this
buf in ufsdirhash_lookup(), so there was no point in brelse'ing it
only to have the caller immediately reaquire the same buffer.

This should make the case of sequential lookups marginally faster;
in my tests, sequential lookups with dirhash enabled are now only
around 1% slower than without dirhash.
2001-07-13 20:50:38 +00:00
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