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io-wq: don't ask for a new worker if we're exiting

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If we're in the process of shutting down the async context, then don't
create new workers if we already have at least the fixed one.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2021-02-26 09:52:02 -07:00
parent fb3a1f6c74
commit 613eeb600e
1 changed files with 2 additions and 0 deletions
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fs/io-wq.c
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@@ -673,6 +673,8 @@ static inline bool io_wqe_need_worker(struct io_wqe *wqe, int index)
{
struct io_wqe_acct *acct = &wqe->acct[index];
if (acct->nr_workers && test_bit(IO_WQ_BIT_EXIT, &wqe->wq->state))
return false;
/* if we have available workers or no work, no need */
if (!hlist_nulls_empty(&wqe->free_list) || !io_wqe_run_queue(wqe))
return false;