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| author | Jiufei Xue <jiufei.xue@linux.alibaba.com> | 2020-06-17 12:53:55 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-06-22 05:44:00 +0300 |
| commit | 5769a351b89cd4d82016f18fa5f6c4077403564d (patch) | |
| tree | 2f700e8e397716e725661515f65ef9f146e4db5c /include/uapi/linux/io_uring.h | |
| parent | 48778464bb7d346b47157d21ffde2af6b2d39110 (diff) | |
| download | linux-5769a351b89cd4d82016f18fa5f6c4077403564d.tar.xz | |
io_uring: change the poll type to be 32-bits
poll events should be 32-bits to cover EPOLLEXCLUSIVE.
Explicit word-swap the poll32_events for big endian to make sure the ABI
is not changed. We call this feature IORING_FEAT_POLL_32BITS,
applications who want to use EPOLLEXCLUSIVE should check the feature bit
first.
Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi/linux/io_uring.h')
| -rw-r--r-- | include/uapi/linux/io_uring.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index 92c22699a5a7..8d033961cb78 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -31,7 +31,8 @@ struct io_uring_sqe { union { __kernel_rwf_t rw_flags; __u32 fsync_flags; - __u16 poll_events; + __u16 poll_events; /* compatibility */ + __u32 poll32_events; /* word-reversed for BE */ __u32 sync_range_flags; __u32 msg_flags; __u32 timeout_flags; @@ -248,6 +249,7 @@ struct io_uring_params { #define IORING_FEAT_RW_CUR_POS (1U << 3) #define IORING_FEAT_CUR_PERSONALITY (1U << 4) #define IORING_FEAT_FAST_POLL (1U << 5) +#define IORING_FEAT_POLL_32BITS (1U << 6) /* * io_uring_register(2) opcodes and arguments |