From: Eric W. Biederman <ebiederm@xmission.com>
Date: Thu, 31 Jul 2014 10:10:50 +0000 (-0700)
Subject: proc: Implement /proc/thread-self to point at the directory of the current thread
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~99^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0097875bd41528922fb3bb5f348c53f17e00e2fd;p=pandora-kernel.git

proc: Implement /proc/thread-self to point at the directory of the current thread

/proc/thread-self is derived from /proc/self.  /proc/thread-self
points to the directory in proc containing information about the
current thread.

This funtionality has been missing for a long time, and is tricky to
implement in userspace as gettid() is not exported by glibc.  More
importantly this allows fixing defects in /proc/mounts and /proc/net
where in a threaded application today they wind up being empty files
when only the initial pthread has exited, causing problems for other
threads.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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