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io_uring: expose read/write attribute capability

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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@samsung.com>
Reviewed-by: Li Zetao <lizetao1@huawei.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Tested-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/20241205062109.1788-1-anuj20.g@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Anuj Gupta
2024-12-05 11:51:09 +05:30
committed by Jens Axboe
parent b08e020450
commit 94d57442e5
2 changed files with 3 additions and 1 deletions
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1
include/uapi/linux/io_uring.h
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@@ -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