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io-wq: fix lack of acct->nr_workers < acct->max_workers judgement
There should be this judgement before we create an io-worker
Fixes: 685fe7feed
("io-wq: eliminate the need for a manager thread")
Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
parent
3d4e4face9
commit
21698274da
1 changed files with 9 additions and 1 deletions
10
fs/io-wq.c
10
fs/io-wq.c
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@ -280,9 +280,17 @@ static void create_worker_cb(struct callback_head *cb)
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{
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struct create_worker_data *cwd;
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struct io_wq *wq;
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struct io_wqe *wqe;
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struct io_wqe_acct *acct;
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cwd = container_of(cb, struct create_worker_data, work);
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wq = cwd->wqe->wq;
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wqe = cwd->wqe;
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wq = wqe->wq;
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acct = &wqe->acct[cwd->index];
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raw_spin_lock_irq(&wqe->lock);
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if (acct->nr_workers < acct->max_workers)
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acct->nr_workers++;
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raw_spin_unlock_irq(&wqe->lock);
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create_io_worker(wq, cwd->wqe, cwd->index);
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kfree(cwd);
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}
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