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fc57ad8d33
Export supported sector sizes in /sys/fs/btrfs/features/supported_sectorsizes. Currently all architectures have PAGE_SIZE, There's some disparity between read-only and read-write support but that will be unified in the future so there's only one file exporting the size. The read-only support for systems with 64K pages also works for 4K sector size. This new sysfs interface would help eg. mkfs.btrfs to print more accurate warnings about potentially incompatible option combinations. Reviewed-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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.