}
}
+static void io_task_refs_refill(struct io_uring_task *tctx)
+{
+ unsigned int refill = -tctx->cached_refs + IO_TCTX_REFS_CACHE_NR;
+
+ percpu_counter_add(&tctx->inflight, refill);
+ refcount_add(refill, ¤t->usage);
+ tctx->cached_refs += refill;
+}
+
+static inline void io_get_task_refs(int nr)
+{
+ struct io_uring_task *tctx = current->io_uring;
+
+ tctx->cached_refs -= nr;
+ if (unlikely(tctx->cached_refs < 0))
+ io_task_refs_refill(tctx);
+}
+
static bool io_cqring_event_overflow(struct io_ring_ctx *ctx, u64 user_data,
long res, unsigned int cflags)
{
static int io_submit_sqes(struct io_ring_ctx *ctx, unsigned int nr)
__must_hold(&ctx->uring_lock)
{
- struct io_uring_task *tctx;
int submitted = 0;
/* make sure SQ entry isn't read before tail */
nr = min3(nr, ctx->sq_entries, io_sqring_entries(ctx));
if (!percpu_ref_tryget_many(&ctx->refs, nr))
return -EAGAIN;
+ io_get_task_refs(nr);
- tctx = current->io_uring;
- tctx->cached_refs -= nr;
- if (unlikely(tctx->cached_refs < 0)) {
- unsigned int refill = -tctx->cached_refs + IO_TCTX_REFS_CACHE_NR;
-
- percpu_counter_add(&tctx->inflight, refill);
- refcount_add(refill, ¤t->usage);
- tctx->cached_refs += refill;
- }
io_submit_state_start(&ctx->submit_state, nr);
-
while (submitted < nr) {
const struct io_uring_sqe *sqe;
struct io_kiocb *req;