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| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2011-10-11 14:05:08 +0900 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2011-10-12 12:15:18 +1100 |
| commit | e2b8b25a6795488eba7bb757706b3ac725c31fac (patch) | |
| tree | f77e43a01891938e8c83b56d2c249a725923b9ec /security | |
| parent | e00fb3f7af111d1b3252f7d622213d2e22be65f5 (diff) | |
| download | lwn-e2b8b25a6795488eba7bb757706b3ac725c31fac.tar.gz lwn-e2b8b25a6795488eba7bb757706b3ac725c31fac.zip | |
TOMOYO: Remove redundant tasklist_lock.
rcu_read_lock() is sufficient for calling find_task_by_pid_ns()/find_task_by_vpid().
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/tomoyo/common.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c index 2e2802060eef..365f3bddee79 100644 --- a/security/tomoyo/common.c +++ b/security/tomoyo/common.c @@ -984,14 +984,12 @@ static bool tomoyo_select_domain(struct tomoyo_io_buffer *head, (global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { struct task_struct *p; rcu_read_lock(); - read_lock(&tasklist_lock); if (global_pid) p = find_task_by_pid_ns(pid, &init_pid_ns); else p = find_task_by_vpid(pid); if (p) domain = tomoyo_real_domain(p); - read_unlock(&tasklist_lock); rcu_read_unlock(); } else if (!strncmp(data, "domain=", 7)) { if (tomoyo_domain_def(data + 7)) @@ -1664,14 +1662,12 @@ static void tomoyo_read_pid(struct tomoyo_io_buffer *head) global_pid = true; pid = (unsigned int) simple_strtoul(buf, NULL, 10); rcu_read_lock(); - read_lock(&tasklist_lock); if (global_pid) p = find_task_by_pid_ns(pid, &init_pid_ns); else p = find_task_by_vpid(pid); if (p) domain = tomoyo_real_domain(p); - read_unlock(&tasklist_lock); rcu_read_unlock(); if (!domain) return; |