projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b4becd48 DW |
1 | .. SPDX-License-Identifier: GPL-2.0 |
| 2 | ||
| 3 | +---------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | |
| 3103084a | 4 | | i.i_block Offset | Where It Points | |
| b4becd48 DW |
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 | +---------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ |