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Diffstat (limited to 'Documentation/filesystems/ext4/ondisk/overview.rst')
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diff --git a/Documentation/filesystems/ext4/ondisk/overview.rst b/Documentation/filesystems/ext4/ondisk/overview.rst deleted file mode 100644 index cbab18baba12..000000000000 --- a/Documentation/filesystems/ext4/ondisk/overview.rst +++ /dev/null @@ -1,26 +0,0 @@ -.. SPDX-License-Identifier: GPL-2.0 - -High Level Design -================= - -An ext4 file system is split into a series of block groups. To reduce -performance difficulties due to fragmentation, the block allocator tries -very hard to keep each file's blocks within the same group, thereby -reducing seek times. The size of a block group is specified in -``sb.s_blocks_per_group`` blocks, though it can also calculated as 8 \* -``block_size_in_bytes``. With the default block size of 4KiB, each group -will contain 32,768 blocks, for a length of 128MiB. The number of block -groups is the size of the device divided by the size of a block group. - -All fields in ext4 are written to disk in little-endian order. HOWEVER, -all fields in jbd2 (the journal) are written to disk in big-endian -order. - -.. include:: blocks.rst -.. include:: blockgroup.rst -.. include:: special_inodes.rst -.. include:: allocators.rst -.. include:: checksums.rst -.. include:: bigalloc.rst -.. include:: inlinedata.rst -.. include:: eainode.rst |
