diff options
| author | Jens Axboe <axboe@kernel.dk> | 2019-11-06 11:27:53 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-11-08 06:57:21 -0700 |
| commit | 84f97dc2333c626979bb547fce343a1003544dcc (patch) | |
| tree | 1455230c19b79a2506553b2a749b9719b34d6b00 | |
| parent | 2665abfd757fb35a241c6f0b1ebf620e3ffb36fb (diff) | |
io_uring: make io_cqring_events() take 'ctx' as argument
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>
| -rw-r--r-- | fs/io_uring.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index eadd19ab39a8..d8e15cce936e 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -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 */ smp_rmb(); 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 * already triggered a CQE (eg in error). */ - if (io_cqring_events(ctx->rings)) + if (io_cqring_events(ctx)) 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, * 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; } @@ -3111,7 +3113,7 @@ static int io_cqring_wait(struct io_ring_ctx *ctx, int min_events, struct io_rings *rings = ctx->rings; int ret = 0; - if (io_cqring_events(rings) >= min_events) + if (io_cqring_events(ctx) >= min_events) return 0; if (sig) { |