diff options
| author | Davide Libenzi <davidel@xmailserver.org> | 2007-09-20 12:40:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-09-20 13:19:59 -0700 |
| commit | b8fceee17a310f189188599a8fa5e9beaff57eb0 (patch) | |
| tree | 21308319be2579059a4d4d7db680a73334659f82 /include/linux/sched.h | |
| parent | 9db619e66503494e41159de3c76fafabe80d016b (diff) | |
| download | lwn-b8fceee17a310f189188599a8fa5e9beaff57eb0.tar.gz lwn-b8fceee17a310f189188599a8fa5e9beaff57eb0.zip | |
signalfd simplification
This simplifies signalfd code, by avoiding it to remain attached to the
sighand during its lifetime.
In this way, the signalfd remain attached to the sighand only during
poll(2) (and select and epoll) and read(2). This also allows to remove
all the custom "tsk == current" checks in kernel/signal.c, since
dequeue_signal() will only be called by "current".
I think this is also what Ben was suggesting time ago.
The external effect of this, is that a thread can extract only its own
private signals and the group ones. I think this is an acceptable
behaviour, in that those are the signals the thread would be able to
fetch w/out signalfd.
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 3de79016f2a6..a01ac6dd5f5e 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -438,7 +438,7 @@ struct sighand_struct { atomic_t count; struct k_sigaction action[_NSIG]; spinlock_t siglock; - struct list_head signalfd_list; + wait_queue_head_t signalfd_wqh; }; struct pacct_struct { |