diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sched.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index f3b4c5891898..bbc51fac0cf6 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -686,7 +686,11 @@ static inline int thread_group_empty(task_t *p) extern void unhash_process(struct task_struct *p); -/* Protects ->fs, ->files, ->mm, and synchronises with wait4(). Nests inside tasklist_lock */ +/* Protects ->fs, ->files, ->mm, and synchronises with wait4(). + * Nests both inside and outside of read_lock(&tasklist_lock). + * It must not be nested with write_lock_irq(&tasklist_lock), + * neither inside nor outside. + */ static inline void task_lock(struct task_struct *p) { spin_lock(&p->alloc_lock); |