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SPDX-License-Identifier: GPL-2.02 3+---------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+4| i.i_block Offset | Where It Points |5+=====================+==============================================================================================================================================================================================================================+6| 0 to 11 | Direct map to file blocks 0 to 11. |7+---------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+8| 12 | Indirect block: (file blocks 12 to (``$block_size`` / 4) + 11, or 12 to 1035 if 4KiB blocks) |9| | |10| | +------------------------------+--------------------------------------------------------------------+ |11| | | Indirect Block Offset | Where It Points | |12| | +==============================+====================================================================+ |13| | | 0 to (``$block_size`` / 4) | Direct map to (``$block_size`` / 4) blocks (1024 if 4KiB blocks) | |14| | +------------------------------+--------------------------------------------------------------------+ |15+---------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+16| 13 | Double-indirect block: (file blocks ``$block_size``/4 + 12 to (``$block_size`` / 4) ^ 2 + (``$block_size`` / 4) + 11, or 1036 to 1049611 if 4KiB blocks) |17| | |18| | +--------------------------------+---------------------------------------------------------------------------------------------------------+ |19| | | Double Indirect Block Offset | Where It Points | |20| | +================================+=========================================================================================================+ |21| | | 0 to (``$block_size`` / 4) | Map to (``$block_size`` / 4) indirect blocks (1024 if 4KiB blocks) | |22| | | | | |23| | | | +------------------------------+--------------------------------------------------------------------+ | |24| | | | | Indirect Block Offset | Where It Points | | |25| | | | +==============================+====================================================================+ | |26| | | | | 0 to (``$block_size`` / 4) | Direct map to (``$block_size`` / 4) blocks (1024 if 4KiB blocks) | | |27| | | | +------------------------------+--------------------------------------------------------------------+ | |28| | +--------------------------------+---------------------------------------------------------------------------------------------------------+ |29+---------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+30| 14 | Triple-indirect block: (file blocks (``$block_size`` / 4) ^ 2 + (``$block_size`` / 4) + 12 to (``$block_size`` / 4) ^ 3 + (``$block_size`` / 4) ^ 2 + (``$block_size`` / 4) + 12, or 1049612 to 1074791436 if 4KiB blocks) |31| | |32| | +--------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+ |33| | | Triple Indirect Block Offset | Where It Points | |34| | +================================+================================================================================================================================================+ |35| | | 0 to (``$block_size`` / 4) | Map to (``$block_size`` / 4) double indirect blocks (1024 if 4KiB blocks) | |36| | | | | |37| | | | +--------------------------------+---------------------------------------------------------------------------------------------------------+ | |38| | | | | Double Indirect Block Offset | Where It Points | | |39| | | | +================================+=========================================================================================================+ | |40| | | | | 0 to (``$block_size`` / 4) | Map to (``$block_size`` / 4) indirect blocks (1024 if 4KiB blocks) | | |41| | | | | | | | |42| | | | | | +------------------------------+--------------------------------------------------------------------+ | | |43| | | | | | | Indirect Block Offset | Where It Points | | | |44| | | | | | +==============================+====================================================================+ | | |45| | | | | | | 0 to (``$block_size`` / 4) | Direct map to (``$block_size`` / 4) blocks (1024 if 4KiB blocks) | | | |46| | | | | | +------------------------------+--------------------------------------------------------------------+ | | |47| | | | +--------------------------------+---------------------------------------------------------------------------------------------------------+ | |48| | +--------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+ |49+---------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+50