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Subject[RFC net-next v3 14/29] io_uring: opcode independent fixed buf import
Date
Extract an opcode independent helper from io_import_fixed for
initialising an iov_iter with a fixed buffer.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
fs/io_uring.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 6a57a5ae18fb..e47629adf3f7 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3728,11 +3728,11 @@ static void kiocb_done(struct io_kiocb *req, ssize_t ret,
}
}

-static int __io_import_fixed(struct io_kiocb *req, int rw, struct iov_iter *iter,
- struct io_mapped_ubuf *imu)
+static int __io_import_fixed(int rw, struct iov_iter *iter,
+ struct io_mapped_ubuf *imu,
+ u64 buf_addr, size_t len)
{
- size_t len = req->rw.len;
- u64 buf_end, buf_addr = req->rw.addr;
+ u64 buf_end;
size_t offset;

if (unlikely(check_add_overflow(buf_addr, (u64)len, &buf_end)))
@@ -3802,7 +3802,7 @@ static int io_import_fixed(struct io_kiocb *req, int rw, struct iov_iter *iter,
imu = READ_ONCE(ctx->user_bufs[index]);
req->imu = imu;
}
- return __io_import_fixed(req, rw, iter, imu);
+ return __io_import_fixed(rw, iter, imu, req->rw.addr, req->rw.len);
}

static int io_buffer_add_list(struct io_ring_ctx *ctx,
--
2.36.1
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