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f688944cfb
Rather than sprinkle opcode checks in the generic read/write prep handler, have a separate prep handler for the vectored readv/writev operation. Signed-off-by: Jens Axboe <axboe@kernel.dk>
30 lines
1.0 KiB
C
30 lines
1.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/pagemap.h>
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struct io_rw_state {
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struct iov_iter iter;
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struct iov_iter_state iter_state;
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struct iovec fast_iov[UIO_FASTIOV];
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};
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struct io_async_rw {
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struct io_rw_state s;
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const struct iovec *free_iovec;
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size_t bytes_done;
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struct wait_page_queue wpq;
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};
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int io_prep_rw(struct io_kiocb *req, const struct io_uring_sqe *sqe);
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int io_prep_rwv(struct io_kiocb *req, const struct io_uring_sqe *sqe);
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int io_prep_rw_fixed(struct io_kiocb *req, const struct io_uring_sqe *sqe);
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int io_read(struct io_kiocb *req, unsigned int issue_flags);
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int io_readv_prep_async(struct io_kiocb *req);
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int io_write(struct io_kiocb *req, unsigned int issue_flags);
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int io_writev_prep_async(struct io_kiocb *req);
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void io_readv_writev_cleanup(struct io_kiocb *req);
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void io_rw_fail(struct io_kiocb *req);
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void io_req_rw_complete(struct io_kiocb *req, struct io_tw_state *ts);
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int io_read_mshot_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
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int io_read_mshot(struct io_kiocb *req, unsigned int issue_flags);
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