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io_uring: make io_cqring_events() take 'ctx' as argument

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The rings can be derived from the ctx, and we need the ctx there for
a future change.

No functional changes in this patch.

Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2019-11-06 11:27:53 -07:00
parent 2665abfd75
commit 84f97dc233
1 changed files with 6 additions and 4 deletions
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10
fs/io_uring.c
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@ -866,8 +866,10 @@ static void io_put_req(struct io_kiocb *req, struct io_kiocb **nxtptr)
} }
} }
static unsigned io_cqring_events(struct io_rings *rings) static unsigned io_cqring_events(struct io_ring_ctx *ctx)
{ {
struct io_rings *rings = ctx->rings;
/* See comment at the top of this file */ /* See comment at the top of this file */
smp_rmb(); smp_rmb();
return READ_ONCE(rings->cq.tail) - READ_ONCE(rings->cq.head); return READ_ONCE(rings->cq.tail) - READ_ONCE(rings->cq.head);
@ -1023,7 +1025,7 @@ static int __io_iopoll_check(struct io_ring_ctx *ctx, unsigned *nr_events,
* If we do, we can potentially be spinning for commands that * If we do, we can potentially be spinning for commands that
* already triggered a CQE (eg in error). * already triggered a CQE (eg in error).
*/ */
if (io_cqring_events(ctx->rings)) if (io_cqring_events(ctx))
break; break;
/* /*
@ -3076,7 +3078,7 @@ static inline bool io_should_wake(struct io_wait_queue *iowq)
* started waiting. For timeouts, we always want to return to userspace, * started waiting. For timeouts, we always want to return to userspace,
* regardless of event count. * regardless of event count.
*/ */
return io_cqring_events(ctx->rings) >= iowq->to_wait || return io_cqring_events(ctx) >= iowq->to_wait ||
atomic_read(&ctx->cq_timeouts) != iowq->nr_timeouts; atomic_read(&ctx->cq_timeouts) != iowq->nr_timeouts;
} }
@ -3111,7 +3113,7 @@ static int io_cqring_wait(struct io_ring_ctx *ctx, int min_events,
struct io_rings *rings = ctx->rings; struct io_rings *rings = ctx->rings;
int ret = 0; int ret = 0;
if (io_cqring_events(rings) >= min_events) if (io_cqring_events(ctx) >= min_events)
return 0; return 0;
if (sig) { if (sig) {