Re: [PATCH RFC POC 21/50] io_uring: commit fds per request
From: sashiko-bot@kernel.org
Date: 2026-09-15 12:11:23
Also in:
bpf, dri-devel, io-uring, kexec, kvm, linux-alpha, linux-arm-kernel, linux-arm-msm, linux-fsdevel, linux-gpio, linux-hyperv, linux-m68k, linux-mips, linux-mm, linux-sh, linux-um, lkml, sparclinux, virtualization
io_uring requests don't complete on syscall exit of the task that submitted them. They complete: - inline from io_uring_enter() - from task_work on any return to userspace - from io-wq workers and from the SQPOLL thread The CQEs are visible to other threads before any syscall returns. So commit the reserved descriptors before the completion is posted. Commit them after ->issue() based on the request's result and before every CQE they post. Nothing reachable from io_uring reserves yet. Once SCM_RIGHTS is converted this keeps IORING_OP_RECVMSG working from io-wq workers and the SQPOLL thread. Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Sashiko has reviewed this patch and found no issues. It looks great! -- Sashiko AI review · https://sashiko.dev/#/patchset/20260915-work-fd-reserve-unify-folded-v1-0-4d5217d6b246@kernel.org?part=21