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For a given filesystem, the number of bits used by the maximum file logical block number is computable from the maximum file size and the block size. These values are always present in struct super_block. Therefore, compute it this way instead of using the value from fscrypt_operations::get_ino_and_lblk_bits. Since filesystems always have to set the super_block fields anyway, this avoids having to provide this information redundantly via fscrypt_operations. This change is in preparation for adding support for sub-block data units. For that, the value that is needed will become "the maximum file data unit index". A hardcoded value won't suffice for that; it will need to be computed anyway. Link: https://lore.kernel.org/r/20230925055451.59499-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.