After commit 9a213d3b80c0, we can pass additional attributes along with
read/write. However, userspace doesn't know that. Add a new feature flag
IORING_FEAT_RW_ATTR, to notify the userspace that the kernel has this
ability.
Signed-off-by: Anuj Gupta <anuj20.g@xxxxxxxxxxx>
---
include/uapi/linux/io_uring.h | 1 +
io_uring/io_uring.c | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index 38f0d6b10eaf..e11c82638527 100644
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -577,6 +577,7 @@ struct io_uring_params {
#define IORING_FEAT_REG_REG_RING (1U << 13)
#define IORING_FEAT_RECVSEND_BUNDLE (1U << 14)
#define IORING_FEAT_MIN_TIMEOUT (1U << 15)
+#define IORING_FEAT_RW_ATTR (1U << 16)
/*
* io_uring_register(2) opcodes and arguments
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index a8cbe674e5d6..a895de54eb3e 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -3710,7 +3710,8 @@ static __cold int io_uring_create(unsigned entries, struct io_uring_params *p,
IORING_FEAT_EXT_ARG | IORING_FEAT_NATIVE_WORKERS |
IORING_FEAT_RSRC_TAGS | IORING_FEAT_CQE_SKIP |
IORING_FEAT_LINKED_FILE | IORING_FEAT_REG_REG_RING |
- IORING_FEAT_RECVSEND_BUNDLE | IORING_FEAT_MIN_TIMEOUT;
+ IORING_FEAT_RECVSEND_BUNDLE | IORING_FEAT_MIN_TIMEOUT |
+ IORING_FEAT_RW_ATTR;
if (copy_to_user(params, p, sizeof(*p))) {
ret = -EFAULT;
--
2.25.1
