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/macosx-10.10/xnu-2782.1.97/bsd/hfs/hfscommon/BTree/
H A DBTreeNodeReserve.c119 int rsrvNodes, availNodes, totalNodes; local
137 height = 2; /* prevent underflow in rsrvNodes calculation */
150 rsrvNodes = 1 + (deletes * (height - 2)) + (inserts * (height - 1));
154 if (rsrvNodes > availNodes) {
191 reqblks = ((rsrvNodes - availNodes) * btree->nodeSize) / hfsmp->blockSize;
198 totalNodes = rsrvNodes + btree->totalNodes - availNodes;
210 btree->reservedNodes += rsrvNodes;
211 nr_insert(btree->fileRefNum, (struct nreserve *)data, rsrvNodes);

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