diff options
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/base.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 7734697..6092a6e 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2224,11 +2224,12 @@ int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir) * In the case of a seek we start with the leader and walk nr * threads past it. */ -static struct task_struct *first_tid(struct task_struct *leader, int tid, int nr) +static struct task_struct *first_tid(struct task_struct *leader, + int tid, int nr) { struct task_struct *pos = NULL; - read_lock(&tasklist_lock); + rcu_read_lock(); /* Attempt to start with the pid of a thread */ if (tid && (nr > 0)) { pos = find_task_by_pid(tid); @@ -2258,7 +2259,7 @@ static struct task_struct *first_tid(struct task_struct *leader, int tid, int nr } pos = NULL; done: - read_unlock(&tasklist_lock); + rcu_read_unlock(); return pos; } @@ -2271,7 +2272,7 @@ done: static struct task_struct *next_tid(struct task_struct *start) { struct task_struct *pos; - read_lock(&tasklist_lock); + rcu_read_lock(); pos = start; if (pid_alive(start)) pos = next_thread(start); @@ -2279,7 +2280,7 @@ static struct task_struct *next_tid(struct task_struct *start) get_task_struct(pos); else pos = NULL; - read_unlock(&tasklist_lock); + rcu_read_unlock(); put_task_struct(start); return pos; } |