tree 5150d4f403833ac18b468bd0e0e0a9a7cdd9f4be
parent 0e4648141af02331f21aabcd34940c70f09a2d04
author KaiGai Kohei <kaigai@ak.jp.nec.com> 1151239765 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1151254885 -0700

[PATCH] pacct: avoidance to refer the last thread as a representation of the process

When pacct facility generate an 'ac_flag' field in accounting record, it
refers a task_struct of the thread which died last in the process.  But any
other task_structs are ignored.

Therefore, pacct facility drops ASU flag even if root-privilege operations are
used by any other threads except the last one.  In addition, AFORK flag is
always set when the thread of group-leader didn't die last, although this
process has called execve() after fork().

We have a same matter in ac_exitcode.  The recorded ac_exitcode is an exit
code of the last thread in the process.  There is a possibility this exitcode
is not the group leader's one.