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Switch defines of BTRFS_MOUNT_* to an enum (the symbolic names are recorded in the debugging information for convenience). There are two more things done but separating them would not make much sense as it's touching the same lines: - Renumber shifts 18..31 to 17..30 to get rid of the hole in the sequence. - Use 1UL as the value that gets shifted because we're approaching the 32bit limit and due to integer promotions the value of (1 << 31) becomes 0xffffffff80000000 when cast to unsigned long (eg. the option manipulating helpers). This is not causing any problems yet as the operations are in-memory and masking the 31st bit works, we don't have more than 31 bits so the ill effects of not masking higher bits don't happen. But once we have more, the problems will emerge. Reviewed-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| 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.