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authorOleg Nesterov <oleg@tv-sign.ru>2008-04-30 00:53:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-30 08:29:37 -0700
commit193191035ad6268db9f561e81e3474b8be89a5ba (patch)
treeac4af28bf65dd7fc6c40d7260806725d9f3330ba /kernel/signal.c
parent2e2ba22ea4fd4bb85f0fa37c521066db6775cbef (diff)
signals: check_kill_permission: remove tasklist_lock
Now that task_session() can't return a false NULL, check_kill_permission() doesn't need tasklist_lock. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: 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.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 24be82c0aae..02ef3548aeb 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -551,9 +551,7 @@ static int check_kill_permission(int sig, struct siginfo *info,
!capable(CAP_KILL)) {
switch (sig) {
case SIGCONT:
- read_lock(&tasklist_lock);
sid = task_session(t);
- read_unlock(&tasklist_lock);
/*
* We don't return the error if sid == NULL. The
* task was unhashed, the caller must notice this.