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Kent Overstreet
eae6c4a625
The journal_keys array can't be substantially modified after we go RW, because lookups need to be able to check it locklessly - thus we're limited on what we can do when a key in the journal has been overwritten. This is a problem when there's many overwrites to skip over for peek() operations. To fix this, add tracking of ranges of overwrites: we create a range entry when there's more than one contiguous whiteout. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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.