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io-wq: get rid of wq->use_refs

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We don't support attach anymore, so doesn't make sense to carry the
use_refs reference count. Get rid of it.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2021-02-16 15:42:24 -07:00
parent d25e3a3de0
commit 3b094e727d
2 changed files with 1 additions and 19 deletions
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19
fs/io-wq.c
View file

@ -122,8 +122,6 @@ struct io_wq {
struct completion done;
struct hlist_node cpuhp_node;
refcount_t use_refs;
};
static enum cpuhp_state io_wq_online;
@ -1086,7 +1084,6 @@ struct io_wq *io_wq_create(unsigned bounded, struct io_wq_data *data)
ret = -ENOMEM;
goto err;
}
refcount_set(&wq->use_refs, 1);
reinit_completion(&wq->done);
return wq;
}
@ -1104,15 +1101,7 @@ struct io_wq *io_wq_create(unsigned bounded, struct io_wq_data *data)
return ERR_PTR(ret);
}
bool io_wq_get(struct io_wq *wq, struct io_wq_data *data)
{
if (data->free_work != wq->free_work || data->do_work != wq->do_work)
return false;
return refcount_inc_not_zero(&wq->use_refs);
}
static void __io_wq_destroy(struct io_wq *wq)
void io_wq_destroy(struct io_wq *wq)
{
int node;
@ -1135,12 +1124,6 @@ static void __io_wq_destroy(struct io_wq *wq)
kfree(wq);
}
void io_wq_destroy(struct io_wq *wq)
{
if (refcount_dec_and_test(&wq->use_refs))
__io_wq_destroy(wq);
}
static bool io_wq_worker_affinity(struct io_worker *worker, void *data)
{
struct task_struct *task = worker->task;

1
fs/io-wq.h
View file

@ -108,7 +108,6 @@ struct io_wq_data {
};
struct io_wq *io_wq_create(unsigned bounded, struct io_wq_data *data);
bool io_wq_get(struct io_wq *wq, struct io_wq_data *data);
void io_wq_destroy(struct io_wq *wq);
void io_wq_enqueue(struct io_wq *wq, struct io_wq_work *work);