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bb7f5d96aa
Fix the fault-in window size logic: * Use a maximum window size of 1 MiB instead of BIO_MAX_VECS * PAGE_SIZE. The previous window size was always one page because the pages variable was accidentally being defined and then redefined in should_fault_in_pages(). * The nr_dirtied heuristic for guessing when there might be memory pressure often results in very small window sizes. Don't let nr_dirtied drop below 8 pages (as btrfs does). * Compute the window size in units of bytes, not pages. * Account for page overlap (unaligned iterators). Signed-off-by: Andreas Gruenbacher <agruenba@redhat.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.