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rsc 2007-04-27 17:52:24 +00:00
parent 9ec61f3ede
commit 7e4524011b
10 changed files with 97 additions and 50 deletions
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13
src/cmd/venti/srv/bloom.c
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@ -26,7 +26,6 @@ bloominit(Bloom *b, vlong vsize, u8int *data)
if(unpackbloomhead(b, data) < 0)
return -1;
fprint(2, "bloom size %lud nhash %d\n", b->size, b->nhash);
b->bitmask = (b->size<<3) - 1;
b->data = data;
return 0;
@ -54,7 +53,19 @@ readbloom(Part *p)
*/
if(bloominit(b, 0, buf) < 0){
vtfree(b);
freepart(p);
return nil;
}else{
/*
* default block size is system page size.
* the bloom filter is usually very big.
* bump the block size up to speed i/o.
*/
if(p->blocksize < (1<<20)){
p->blocksize = 1<<20;
if(p->blocksize > p->size)
p->blocksize = p->size;
}
}
b->part = p;
b->data = nil;