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hhŒ	_document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ SPDX-License-Identifier: GPL-2.0”h]”hŒ SPDX-License-Identifier: GPL-2.0”…””}”hh£sbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1h¡hhhžhhŸŒG/var/lib/git/docbuild/linux/Documentation/filesystems/ext4/overview.rst”h KubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒHigh Level Design”h]”hŒHigh Level Design”…””}”(hh»hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hh¶hžhhŸh³h KubhŒ	paragraph”“”)”}”(hX0  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
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``block_size_in_bytes``. With the default block size of 4KiB, each group
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groups is the size of the device divided by the size of a block group.”h]”(hX  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 fileâ€™s blocks within the same group, thereby
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”…””}”(hhËhžhhŸNh NubhŒliteral”“”)”}”(hŒ``sb.s_blocks_per_group``”h]”hŒsb.s_blocks_per_group”…””}”(hhÕhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÓhhËubhŒ. blocks, though it can also calculated as 8 *
”…””}”(hhËhžhhŸNh NubhÔ)”}”(hŒ``block_size_in_bytes``”h]”hŒblock_size_in_bytes”…””}”(hhçhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÓhhËubhŒÀ. With the default block size of 4KiB, each group
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