Commit 843bbfd4 authored by Jens Axboe's avatar Jens Axboe
Browse files

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: default avatarJens Axboe <axboe@kernel.dk>
parent bf1daa4b

fs/io-wq.c

+4 −4
Original line number Diff line number Diff line
@@ -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);

fs/io-wq.h

+2 −0
Original line number Diff line number Diff line
@@ -106,6 +106,8 @@ void io_wq_destroy(struct io_wq *wq); 
void io_wq_enqueue(struct io_wq *wq, struct io_wq_work *work);

void io_wq_hash_work(struct io_wq_work *work, void *val);



pid_t io_wq_fork_thread(int (*fn)(void *), void *arg);



static inline bool io_wq_is_hashed(struct io_wq_work *work)

{

	return work->flags & IO_WQ_WORK_HASHED;