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io_uring: cosmetic changes for batch free 

Move all batch free bits close to each other and rename in a consistent
way.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-06-28 12:52:33 +03:00 committed by Jens Axboe
parent c352438333
commit 2d6500d44c
1 changed files with 37 additions and 32 deletions
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69
fs/io_uring.c
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@ -1537,21 +1537,6 @@ static void __io_free_req(struct io_kiocb *req)
clear_bit_unlock(0, (unsigned long *) &req->ctx->fallback_req);
}
struct req_batch {
void *reqs[IO_IOPOLL_BATCH];
int to_free;
};
static void io_free_req_many(struct io_ring_ctx *ctx, struct req_batch *rb)
{
if (!rb->to_free)
return;
kmem_cache_free_bulk(req_cachep, rb->to_free, rb->reqs);
percpu_ref_put_many(&ctx->refs, rb->to_free);
rb->to_free = 0;
}
static bool io_link_cancel_timeout(struct io_kiocb *req)
{
struct io_ring_ctx *ctx = req->ctx;
@ -1743,6 +1728,41 @@ static void io_free_req(struct io_kiocb *req)
__io_free_req(req);
}
struct req_batch {
void *reqs[IO_IOPOLL_BATCH];
int to_free;
};
static void __io_req_free_batch_flush(struct io_ring_ctx *ctx,
struct req_batch *rb)
{
kmem_cache_free_bulk(req_cachep, rb->to_free, rb->reqs);
percpu_ref_put_many(&ctx->refs, rb->to_free);
rb->to_free = 0;
}
static void io_req_free_batch_finish(struct io_ring_ctx *ctx,
struct req_batch *rb)
{
if (rb->to_free)
__io_req_free_batch_flush(ctx, rb);
}
static void io_req_free_batch(struct req_batch *rb, struct io_kiocb *req)
{
if (unlikely(io_is_fallback_req(req))) {
io_free_req(req);
return;
}
if (req->flags & REQ_F_LINK_HEAD)
io_queue_next(req);
io_dismantle_req(req);
rb->reqs[rb->to_free++] = req;
if (unlikely(rb->to_free == ARRAY_SIZE(rb->reqs)))
__io_req_free_batch_flush(req->ctx, rb);
}
/*
* Drop reference to request, return next in chain (if there is one) if this
* was the last reference to this request.
@ -1839,21 +1859,6 @@ static inline unsigned int io_sqring_entries(struct io_ring_ctx *ctx)
return smp_load_acquire(&rings->sq.tail) - ctx->cached_sq_head;
}
static inline void io_req_multi_free(struct req_batch *rb, struct io_kiocb *req)
{
if (unlikely(io_is_fallback_req(req))) {
io_free_req(req);
return;
}
if (req->flags & REQ_F_LINK_HEAD)
io_queue_next(req);
io_dismantle_req(req);
rb->reqs[rb->to_free++] = req;
if (unlikely(rb->to_free == ARRAY_SIZE(rb->reqs)))
io_free_req_many(req->ctx, rb);
}
static int io_put_kbuf(struct io_kiocb *req)
{
struct io_buffer *kbuf;
@ -1918,13 +1923,13 @@ static void io_iopoll_complete(struct io_ring_ctx *ctx, unsigned int *nr_events,
(*nr_events)++;
if (refcount_dec_and_test(&req->refs))
io_req_multi_free(&rb, req);
io_req_free_batch(&rb, req);
}
io_commit_cqring(ctx);
if (ctx->flags & IORING_SETUP_SQPOLL)
io_cqring_ev_posted(ctx);
io_free_req_many(ctx, &rb);
io_req_free_batch_finish(ctx, &rb);
if (!list_empty(&again))
io_iopoll_queue(&again);