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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2008-07-25 01:47:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-25 10:53:38 -0700 |
| commit | 6715ca451cfff1c9ce4b33ad9918a1dacf43997c (patch) | |
| tree | a66cdfd7026e7ad40ad0675a35ff35886216ed5f /kernel/signal.c | |
| parent | 96347e7759e2e433c427defa0fa1adfc8cce6226 (diff) | |
| download | lwn-6715ca451cfff1c9ce4b33ad9918a1dacf43997c.tar.gz lwn-6715ca451cfff1c9ce4b33ad9918a1dacf43997c.zip | |
signals: collect_signal: remove the unneeded sigismember() check
collect_signal() checks sigismember(&list->signal, sig), this is not
needed. This "sig" was just found by next_signal(), so it must be valid.
We have a (completely broken) call to ->notifier in between, but it must
not play with sigpending->signal bits or unlock ->siglock.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 6c0958e52ea7..c5b9aabb1550 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -343,9 +343,6 @@ static int collect_signal(int sig, struct sigpending *list, siginfo_t *info) struct sigqueue *q, *first = NULL; int still_pending = 0; - if (unlikely(!sigismember(&list->signal, sig))) - return 0; - /* * Collect the siginfo appropriate to this signal. Check if * there is another siginfo for the same signal. |