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Commit95846ecf9d("pid: replace pid bitmap implementation with IDR API") changed last field of /proc/loadavg (last pid allocated) to be off by one: # unshare -p -f --mount-proc cat /proc/loadavg 0.00 0.00 0.00 1/60 2 <=== It should be 1 after first fork into pid namespace. This is formally a regression but given how useless this field is I don't think anyone is affected. Bug was found by /proc testsuite! Link: http://lkml.kernel.org/r/20180413175408.GA27246@avx2 Fixes:95846ecf9d("pid: replace pid bitmap implementation with IDR API") Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Gargi Sharma <gs051095@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.