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DINDIRECT_BLOCK132fs/ext/truncate.c#define DINDIRECT_BLOCK ((DIRECT_BLOCK-offset)>>8)
DINDIRECT_BLOCK211fs/ext2/truncate.c#define DINDIRECT_BLOCK (((int)DIRECT_BLOCK - offset) / addr_per_block)
DINDIRECT_BLOCK129fs/minix/truncate.c#define DINDIRECT_BLOCK ((DIRECT_BLOCK-(512+7))>>9)