We have several racy reads, mark them with data_race() to demonstrate
this fact.
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
fs/io_uring.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index a828ac740fb6..0fc6135d43d7 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2272,7 +2272,7 @@ static __cold bool __io_alloc_req_refill(struct io_ring_ctx *ctx)
* locked cache, grab the lock and move them over to our submission
* side cache.
*/
- if (READ_ONCE(ctx->locked_free_nr) > IO_COMPL_BATCH) {
+ if (data_race(ctx->locked_free_nr) > IO_COMPL_BATCH) {
io_flush_cached_locked_reqs(ctx, &ctx->submit_state);
if (!io_req_cache_empty(ctx))
return true;
@@ -2566,8 +2566,8 @@ static void tctx_task_work(struct callback_head *cb)
handle_tw_list(node2, &ctx, &uring_locked);
cond_resched();
- if (!tctx->task_list.first &&
- !tctx->prior_task_list.first && uring_locked)
+ if (data_race(!tctx->task_list.first) &&
+ data_race(!tctx->prior_task_list.first) && uring_locked)
io_submit_flush_completions(ctx);
}
--
2.35.2
