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io_uring: simplify struct io_uring_sqe layout
Flatten struct io_uring_sqe, the last union is exactly 64B, so move them out of union { struct { ... }}, and decrease __pad2 size. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/2e21ef7aed136293d654450bc3088973a8adc730.1624543113.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
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1 changed files with 10 additions and 14 deletions
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@ -46,21 +46,17 @@ struct io_uring_sqe {
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__u32 unlink_flags;
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};
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__u64 user_data; /* data to be passed back at completion time */
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/* pack this to avoid bogus arm OABI complaints */
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union {
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struct {
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/* pack this to avoid bogus arm OABI complaints */
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union {
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/* index into fixed buffers, if used */
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__u16 buf_index;
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/* for grouped buffer selection */
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__u16 buf_group;
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} __attribute__((packed));
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/* personality to use, if used */
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__u16 personality;
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__s32 splice_fd_in;
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};
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__u64 __pad2[3];
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};
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/* index into fixed buffers, if used */
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__u16 buf_index;
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/* for grouped buffer selection */
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__u16 buf_group;
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} __attribute__((packed));
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/* personality to use, if used */
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__u16 personality;
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__s32 splice_fd_in;
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__u64 __pad2[2];
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};
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enum {
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