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io_uring: grab RCU read lock marking task run

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Not required right now, as io_req_local_work_add() already calls this
helper with the RCU read lock held. But in preparation for that not
being the case, grab it locally.

Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2026-06-11 20:27:22 -06:00
parent 753f81b3b8
commit ed64f5c546
1 changed files with 3 additions and 3 deletions
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6
io_uring/tw.c
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@ -158,11 +158,11 @@ void tctx_task_work(struct callback_head *cb)
*/
static void io_ctx_mark_taskrun(struct io_ring_ctx *ctx)
{
lockdep_assert_in_rcu_read_lock();
if (ctx->flags & IORING_SETUP_TASKRUN_FLAG) {
struct io_rings *rings = rcu_dereference(ctx->rings_rcu);
struct io_rings *rings;
guard(rcu)();
rings = rcu_dereference(ctx->rings_rcu);
atomic_or(IORING_SQ_TASKRUN, &rings->sq_flags);
}
}