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| author | Ingo Molnar <mingo@elte.hu> | 2010-10-07 09:43:11 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-10-07 09:43:11 +0200 |
| commit | d4f8f217b8a5d5bd02af979650418dca4caec472 (patch) | |
| tree | af047bfa9729c975e24cb7624107574e884d3a57 /kernel/sys.c | |
| parent | 2dfbf4dfbe47a484bae20456c12b40763b9b6af7 (diff) | |
| parent | 773e3f93577ffb493fb7c39b1a6ecf39b5748e87 (diff) | |
| download | lwn-d4f8f217b8a5d5bd02af979650418dca4caec472.tar.gz lwn-d4f8f217b8a5d5bd02af979650418dca4caec472.zip | |
Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu into core/rcu
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index e9ad44489828..7f5a0cd296a9 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -931,6 +931,7 @@ SYSCALL_DEFINE2(setpgid, pid_t, pid, pid_t, pgid) pgid = pid; if (pgid < 0) return -EINVAL; + rcu_read_lock(); /* From this point forward we keep holding onto the tasklist lock * so that our parent does not change from under us. -DaveM @@ -984,6 +985,7 @@ SYSCALL_DEFINE2(setpgid, pid_t, pid, pid_t, pgid) out: /* All paths lead to here, thus we are safe. -DaveM */ write_unlock_irq(&tasklist_lock); + rcu_read_unlock(); return err; } |