Il 03/07/2013 23:04, Peter Lieven ha scritto: >> > Define the return value of get_block_status. Bits 0, 1, 2 and 8-62 >> > are valid; bit 63 (the sign bit) is reserved for errors. Bits 3-7 >> > are left for future extensions. > Is Bit 8 not also reserved for future use? BDRV_SECTOR_BITS is 9.
Right. > Can you explain which information is exactly returned in Bits 9-62? Bits 9-62 are the offset at which the data is stored in bs->file, they are valid if bit 2 (BDRV_BLOCK_OFFSET_VALID) is 1. Paolo
