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io-wq: remove unused io-wq refcounting

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iowq->refs is initialised to one and killed on exit, so it's not used
and we can kill it.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/401007393528ea7c102360e69a29b64498e15db2.1623634181.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov
2021-06-14 02:36:13 +01:00
committed by Jens Axboe
parent c7f405d6fa
commit 382cb03046
1 changed files with 1 additions and 5 deletions
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6
fs/io-wq.c
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@@ -109,8 +109,6 @@ struct io_wq {
struct io_wq_hash *hash;
refcount_t refs;
atomic_t worker_refs;
struct completion worker_done;
@@ -949,7 +947,6 @@ struct io_wq *io_wq_create(unsigned bounded, struct io_wq_data *data)
}
wq->task = get_task_struct(data->task);
refcount_set(&wq->refs, 1);
atomic_set(&wq->worker_refs, 1);
init_completion(&wq->worker_done);
return wq;
@@ -1038,8 +1035,7 @@ void io_wq_put_and_exit(struct io_wq *wq)
WARN_ON_ONCE(!test_bit(IO_WQ_BIT_EXIT, &wq->state));
io_wq_exit_workers(wq);
if (refcount_dec_and_test(&wq->refs))
io_wq_destroy(wq);
io_wq_destroy(wq);
}
static bool io_wq_worker_affinity(struct io_worker *worker, void *data)