diff options
| author | David Vrabel <david.vrabel@csr.com> | 2008-10-20 16:07:19 +0100 |
|---|---|---|
| committer | David Vrabel <david.vrabel@csr.com> | 2008-10-20 16:07:19 +0100 |
| commit | 61e0e79ee3c609eb34edf2fe023708cba6a79b1f (patch) | |
| tree | 663deacffd4071120dc9badb70428fe5f124c7b9 /kernel/exit.c | |
| parent | c15895ef30c2c03e99802951787183039a349d32 (diff) | |
| parent | 0cfd81031a26717fe14380d18275f8e217571615 (diff) | |
Merge branch 'master' into for-upstream
Conflicts:
Documentation/ABI/testing/sysfs-bus-usb
drivers/Makefile
Diffstat (limited to 'kernel/exit.c')
| -rw-r--r-- | kernel/exit.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index 85a83c83185..0ef4673e351 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -640,24 +640,23 @@ retry: assign_new_owner: BUG_ON(c == p); get_task_struct(c); + read_unlock(&tasklist_lock); + down_write(&mm->mmap_sem); /* * The task_lock protects c->mm from changing. * We always want mm->owner->mm == mm */ task_lock(c); - /* - * Delay read_unlock() till we have the task_lock() - * to ensure that c does not slip away underneath us - */ - read_unlock(&tasklist_lock); if (c->mm != mm) { task_unlock(c); + up_write(&mm->mmap_sem); put_task_struct(c); goto retry; } cgroup_mm_owner_callbacks(mm->owner, c); mm->owner = c; task_unlock(c); + up_write(&mm->mmap_sem); put_task_struct(c); } #endif /* CONFIG_MM_OWNER */ |