Re: [RFC][PATCH 05/10] Task watchers v2 Register cpuset task watcher
Matt wrote:
- cpuset_fork(p);
#ifdef CONFIG_NUMA
p->mempolicy = mpol_copy(p->mempolicy);
if (IS_ERR(p->mempolicy)) {
retval = PTR_ERR(p->mempolicy);
p->mempolicy = NULL;
- goto bad_fork_cleanup_cpuset;
+ goto bad_fork_cleanup_delays_binfmt;
}
mpol_fix_fork_child_flag(p);
#endif
#ifdef CONFIG_TRACE_IRQFLAGS
p->irq_events = 0;
@@ -1280,13 +1278,11 @@ bad_fork_cleanup_files:
bad_fork_cleanup_security:
security_task_free(p);
bad_fork_cleanup_policy:
#ifdef CONFIG_NUMA
mpol_free(p->mempolicy);
-bad_fork_cleanup_cpuset:
#endif
- cpuset_exit(p);
bad_fork_cleanup_delays_binfmt:
The above code, before your change, had the affect that if mpol_copy()
failed, then the cpusets that were just setup by the cpuset_fork()
call were undone by a cpuset_exit() call.
From what I can tell, after your change, this is no longer done,
and a failed mpol_copy will leave cpusets in an incorrect state.
Am I missing something?
--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj(a)sgi.com> 1.925.600.0401