jeff 2f8e8fa587 Fix a long standing SUJ performance problem: ... - Keep a hash of indirect blocks that have recently been freed and are still referenced in the journal. - Lookup blocks in this hash before forcing a new block write to wait on the journal entry to hit the disk. This is only necessary to avoid confusion between old identities as indirects and new identities as file blocks. - Don't free jseg structures until the journal has written a record that invalidates it. This keeps the indirect block information around for as long as is required to be safe. - Force an empty journal block write when required to flush out stale journal data that is simply waiting for the oldest valid sequence number to advance beyond it.		2011-04-10 03:49:53 +00:00
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ffs	Fix a long standing SUJ performance problem:	2011-04-10 03:49:53 +00:00
ufs	Retire opt_ffs_broken_fixme.h.	2011-03-20 21:05:09 +00:00