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fill_note_info() iterates through the list of threads collected in mm->core_state->dumper, allocating a struct elf_thread_core_info instance for each and linking those into a list. We need the entry corresponding to current to be first in the resulting list, so the logics for list insertion is if it's for current or list is empty insert in the head else insert after the first element However, in mm->core_state->dumper the entry for current is guaranteed to be the first one. Which means that both parts of condition will be true on the first iteration and neither will be true on all subsequent ones. Taking the first iteration out of the loop simplifies things nicely... 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.