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48af2f7e52
If there are badblocks present in the 'struct page' area for pfn namespaces, until now, the only way to clear them has been to force the namespace into raw mode, clear the errors, and re-enable the fsdax mode. This is clunky, given that it should be easy enough for the pfn driver to do the same. Add a new helper that uses the most recently available badblocks list to check whether there are any badblocks that lie in the volatile struct page area. If so, before initializing the struct pages, send down targeted writes via nvdimm_write_bytes to write zeroes to the affected blocks, and thus clear errors. Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.