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Wang Wenhu
abd69b9e00
The param "start" actually referes to the physical memory start, which is to be mapped into virtual area vma. And it is the field vma->vm_start which stands for the start of the area. Most of the time, we do not read through whole implementation of a function but only the definition and essential comments. Accurate comments are definitely the base stone. Signed-off-by: Wang Wenhu <wenhu.wang@vivo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200318052206.105104-1-wenhu.wang@vivo.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.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.