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[PATCH] fill_tgid: cleanup delays accounting 

fill_tgid() should skip not only an already exited group leader.  If the
task has ->exit_state != 0 it already did exit_notify(), so it also did
fill_tgid_exit()->delayacct_add_tsk(->signal->stats) and we should skip it
to avoid a double accounting.

This patch doesn't close the race completely, but it cleanups the code.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Jay Lan <jlan@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Oleg Nesterov 2006-10-28 10:38:54 -07:00 committed by Linus Torvalds
parent a98b609426
commit d7c3f5f231
1 changed files with 1 additions and 1 deletions
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2
kernel/taskstats.c
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@ -235,7 +235,7 @@ static int fill_tgid(pid_t tgid, struct task_struct *first,
tsk = first; tsk = first;
do { do {
if (tsk->exit_state == EXIT_ZOMBIE && thread_group_leader(tsk)) if (tsk->exit_state)
continue; continue;
/* /*
* Accounting subsystem can call its functions here to * Accounting subsystem can call its functions here to