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uread() is only used to initialize the ELF file's pseudo private-memory mapping while uwrite() and ulseek() work within the pseudo-mapping and extend it as necessary. Thus it is not a complementary function to uwrite() and ulseek(). It also makes no sense to do cleanups inside uread() when its only caller, mmap_file(), is doing the relevant allocations and associated initializations. Therefore it's clearer to use a plain read() call to initialize the data in mmap_file() and remove uread(). Link: http://lkml.kernel.org/r/31a87c22b19150cec1c8dc800c8b0873a2741703.1563992889.git.mhelsley@vmware.com Signed-off-by: Matt Helsley <mhelsley@vmware.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.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.