io-wq: make io_wq_fork_thread() available to other users
We want to use this in io_uring proper as well, for the SQPOLL thread.
Rename it from fork_thread() to io_wq_fork_thread(), and make it
available through the io-wq.h header.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/fs/io-wq.c b/fs/io-wq.c
index 3a506f1..b0d09f6 100644
--- a/fs/io-wq.c
+++ b/fs/io-wq.c
@@ -592,7 +592,7 @@ static int task_thread_unbound(void *data)
return task_thread(data, IO_WQ_ACCT_UNBOUND);
}
-static pid_t fork_thread(int (*fn)(void *), void *arg)
+pid_t io_wq_fork_thread(int (*fn)(void *), void *arg)
{
unsigned long flags = CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|
CLONE_IO|SIGCHLD;
@@ -622,9 +622,9 @@ static bool create_io_worker(struct io_wq *wq, struct io_wqe *wqe, int index)
spin_lock_init(&worker->lock);
if (index == IO_WQ_ACCT_BOUND)
- pid = fork_thread(task_thread_bound, worker);
+ pid = io_wq_fork_thread(task_thread_bound, worker);
else
- pid = fork_thread(task_thread_unbound, worker);
+ pid = io_wq_fork_thread(task_thread_unbound, worker);
if (pid < 0) {
kfree(worker);
return false;
@@ -1012,7 +1012,7 @@ struct io_wq *io_wq_create(unsigned bounded, struct io_wq_data *data)
refcount_set(&wq->refs, 1);
current->flags |= PF_IO_WORKER;
- ret = fork_thread(io_wq_manager, wq);
+ ret = io_wq_fork_thread(io_wq_manager, wq);
current->flags &= ~PF_IO_WORKER;
if (ret >= 0) {
wait_for_completion(&wq->done);