venti: import changes from plan 9
R=rsc CC=plan9port.codebot http://codereview.appspot.com/4523057
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21 changed files with 141 additions and 63 deletions
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@ -54,6 +54,7 @@ enum
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MaxIo = 64*1024, /* max size of a single read or write operation */
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ICacheBits = 16, /* default bits for indexing icache */
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MaxAMap = 31*1024, /* max. allowed arenas in an address mapping; must be < 32*1024 */
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Unspecified = TWID32,
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/*
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* return codes from syncarena
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@ -750,6 +751,7 @@ extern int l1quantum;
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extern int ignorebloom;
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extern int icacheprefetch;
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extern int syncwrites;
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extern int debugarena; /* print in arena error msgs; -1==unknown */
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extern Stats *stathist;
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extern int nstathist;
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