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io-wq: don't create any IO workers upfront

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When the manager thread starts up, it creates a worker per node for
the given context. Just let these get created dynamically, like we do
for adding further workers.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2021-02-16 10:06:21 -07:00
parent 7c25c0d16e
commit 1cbd9c2bcf
1 changed files with 0 additions and 12 deletions
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12
fs/io-wq.c
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@ -759,18 +759,7 @@ static int io_wq_manager(void *data)
struct io_wq *wq = data;
int node;
/* create fixed workers */
refcount_set(&wq->refs, 1);
for_each_node(node) {
if (!node_online(node))
continue;
if (create_io_worker(wq, wq->wqes[node], IO_WQ_ACCT_BOUND))
continue;
set_bit(IO_WQ_BIT_ERROR, &wq->state);
set_bit(IO_WQ_BIT_EXIT, &wq->state);
goto out;
}
complete(&wq->done);
while (!kthread_should_stop()) {
@ -796,7 +785,6 @@ static int io_wq_manager(void *data)
schedule_timeout(HZ);
}
out:
if (refcount_dec_and_test(&wq->refs)) {
complete(&wq->done);
return 0;