From 1c0aa1fae1acb77c5f9917adb0e4cb4500b9f3a6 Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@kernel.dk>
Date: Sat, 20 Feb 2021 11:55:28 -0700
Subject: [PATCH] io_uring: flag new native workers with
IORING_FEAT_NATIVE_WORKERS
A few reasons to do this:
- The naming of the manager and worker have changed. That's a user visible
change, so makes sense to flag it.
- Opening certain files that use ->signal (like /proc/self or /dev/tty)
now works, and the flag tells the application upfront that this is the
case.
- Related to the above, using signalfd will now work as well.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
fs/io_uring.c | 2 +-
include/uapi/linux/io_uring.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 378cf79e66c90..cf9a5fa1ad03e 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -9467,7 +9467,7 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p,
IORING_FEAT_SUBMIT_STABLE | IORING_FEAT_RW_CUR_POS |
IORING_FEAT_CUR_PERSONALITY | IORING_FEAT_FAST_POLL |
IORING_FEAT_POLL_32BITS | IORING_FEAT_SQPOLL_NONFIXED |
- IORING_FEAT_EXT_ARG;
+ IORING_FEAT_EXT_ARG | IORING_FEAT_NATIVE_WORKERS;
if (copy_to_user(params, p, sizeof(*p))) {
ret = -EFAULT;
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index ac4e1738a9afd..2514eb6b1cf28 100644
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -262,6 +262,7 @@ struct io_uring_params {
#define IORING_FEAT_POLL_32BITS (1U << 6)
#define IORING_FEAT_SQPOLL_NONFIXED (1U << 7)
#define IORING_FEAT_EXT_ARG (1U << 8)
+#define IORING_FEAT_NATIVE_WORKERS (1U << 9)
/*
* io_uring_register(2) opcodes and arguments
--
GitLab