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59e96e6583
it's easier to drop it right after lookup_open() and regain if needed (i.e. if we will need to truncate). On the non-FMODE_OPENED path we do that anyway. In case of FMODE_CREATED we won't be needing it. And it's easier to prove correctness that way, especially since the initial failure to get write access is not always fatal; proving that we'll never end up truncating in that case is rather convoluted. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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.