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64e7b8c7c5
The function verify_bio_data_sectors() assume each fs block can be mapped by one page, blocking bs > ps support for raid56. Prepare it for bs > ps cases by: - Make get_bio_sector_nr() to consider bs > ps cases The function is utilized to calculate the sector number of a device bio submitted by btrfs raid56 layer. - Assemble a local paddrs[] for checksum calculation - Open code btrfs_check_block_csum() btrfs_check_block_csum() only supports fs blocks backed by large folios. But for raid56 we can have fs blocks backed by multiple non-contiguous pages, e.g. direct IO, encoded read/write/send. So instead of using btrfs_check_block_csum(), open code it to use btrfs_calculate_block_csum_pages(). Signed-off-by: Qu Wenruo <wqu@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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| 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 reStructuredText 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.