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authorDavide Libenzi <davidel@xmailserver.org>2007-09-20 12:40:16 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-09-20 13:19:59 -0700
commitb8fceee17a310f189188599a8fa5e9beaff57eb0 (patch)
tree21308319be2579059a4d4d7db680a73334659f82 /include/linux/init_task.h
parent9db619e66503494e41159de3c76fafabe80d016b (diff)
downloadop-kernel-dev-b8fceee17a310f189188599a8fa5e9beaff57eb0.zip
op-kernel-dev-b8fceee17a310f189188599a8fa5e9beaff57eb0.tar.gz
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/init_task.h')
-rw-r--r--include/linux/init_task.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index cab741c..f8abfa3 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -86,7 +86,7 @@ extern struct nsproxy init_nsproxy;
.count = ATOMIC_INIT(1), \
.action = { { { .sa_handler = NULL, } }, }, \
.siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
- .signalfd_list = LIST_HEAD_INIT(sighand.signalfd_list), \
+ .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
}
extern struct group_info init_groups;
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