On 02/13, Linus Torvalds wrote: > > On Thu, Feb 13, 2014 at 9:40 AM, Oleg Nesterov <oleg@xxxxxxxxxx> wrote: > > > > And we should be careful with SIGQUEUE_PREALLOC, at least > > collect_signal() should not do list_del_init()... Plus we need to > > handle the SEND_SIG_FORCED-like case. > > I don't think the users need to care. They'd just call > "sigqueue_free()" not knowing about our preallocations etc. Yes, but we need to be careful to avoid the races with release_posix_timer(). > That kind > of detail should be confined to inside signal.c. Yes, sure. > But there really aren't that many users. There's a couple of > "dequeue_signal_lock()" users, but they don't actually *want* the > siginfo at all (they're kernel threads), so we can just make that > function free the siginfo immediately (and get rid of the totally > unnecessay kernel stack allocation). Yes. Perhaps this helper should be changed/renamed. And perhaps we can even change __send_signal() to avoid __sigqueue_alloc() if PF_KTHREAD. Or sig == SIGKILL. Oleg. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
