liburing
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liburing, man: make io_uring_sqring_wait() more consistent with API
Make io_uring_sqring_wait()
return an amount of free SQ ring entries or -EINVAL
if the ring was not setup with IORING_SETUP_SQPOLL
, adjust manual page accordingly.
Signed-off-by: Dmitry Antipov [email protected]
NOTE: IIUC this requires the following kernel change as well:
diff --git a/io_uring/sqpoll.c b/io_uring/sqpoll.c
index 559652380672..7fc1b388ed90 100644
--- a/io_uring/sqpoll.c
+++ b/io_uring/sqpoll.c
@@ -327,7 +327,7 @@ int io_sqpoll_wait_sq(struct io_ring_ctx *ctx)
} while (!signal_pending(current));
finish_wait(&ctx->sqo_sq_wait, &wait);
- return 0;
+ return io_sqring_entries(ctx);
}
__cold int io_sq_offload_create(struct io_ring_ctx *ctx,