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io-wq: make io_worker lock a raw spinlock 

In preparation to nesting it under the wqe lock (which is raw due to
being acquired from the scheduler side), change the io_worker lock from
a normal spinlock to a raw spinlock.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2022-01-18 19:13:43 -07:00
parent ea6e7ceeda
commit 081b582046
1 changed files with 6 additions and 6 deletions
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12
fs/io-wq.c
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@ -48,7 +48,7 @@ struct io_worker {
struct io_wqe *wqe;
struct io_wq_work *cur_work;
spinlock_t lock;
raw_spinlock_t lock;
struct completion ref_done;
@ -528,9 +528,9 @@ static void io_assign_current_work(struct io_worker *worker,
cond_resched();
}
spin_lock(&worker->lock);
raw_spin_lock(&worker->lock);
worker->cur_work = work;
spin_unlock(&worker->lock);
raw_spin_unlock(&worker->lock);
}
static void io_wqe_enqueue(struct io_wqe *wqe, struct io_wq_work *work);
@ -814,7 +814,7 @@ fail:
refcount_set(&worker->ref, 1);
worker->wqe = wqe;
spin_lock_init(&worker->lock);
raw_spin_lock_init(&worker->lock);
init_completion(&worker->ref_done);
if (index == IO_WQ_ACCT_BOUND)
@ -980,13 +980,13 @@ static bool io_wq_worker_cancel(struct io_worker *worker, void *data)
* Hold the lock to avoid ->cur_work going out of scope, caller
* may dereference the passed in work.
*/
spin_lock(&worker->lock);
raw_spin_lock(&worker->lock);
if (worker->cur_work &&
match->fn(worker->cur_work, match->data)) {
set_notify_signal(worker->task);
match->nr_running++;
}
spin_unlock(&worker->lock);
raw_spin_unlock(&worker->lock);
return match->nr_running && !match->cancel_all;
}