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The function steal_rbio() assume each fs block can be mapped by
one page, blocking bs > ps support for raid56.
Prepare it for bs > ps cases by:
- Introduce two helpers to calculate the sector number
Previously we assume one page will contain at least one fs block, thus
can use something like "sectors_per_page = PAGE_SIZE / sectorsize;",
but with bs > ps support that above number will be 0.
Instead introduce two helpers:
* page_nr_to_sector_nr()
Returns the sector number of the first sector covered by the page.
* page_nr_to_num_sectors()
Return how many sectors are covered by the page.
And use the returned values for bitmap operations other than
open-coded "PAGE_SIZE / sectorsize".
Those helpers also have extra ASSERT()s to catch weird numbers.
- Use above helpers
The involved functions are:
* steal_rbio_page()
* is_data_stripe_page()
* full_page_sectors_uptodate()
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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| arch | ||
| 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 | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .pylintrc | ||
| .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 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.