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01fc4b9a6e
Since pvec have 15 pages, it not a multiple of 4, when write compressed pages, write in 64K as a unit, it will call pagevec_lookup_range_tag agagin, sometimes this will take a lot of time. Use onstack pages instead of pvec to mitigate this problem. Signed-off-by: Fengnan Chang <fengnanchang@gmail.com> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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.