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io_uring/nop: reuse req->buf_index

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There is already a field in io_kiocb that can store a registered buffer
index, use that instead of stashing the value into struct io_nop.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250224213116.3509093-3-kbusch@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Keith Busch 2025-02-24 13:31:07 -08:00 committed by Jens Axboe
parent c5b47d5a8c
commit a14ca7a413
1 changed files with 2 additions and 5 deletions
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7
io_uring/nop.c
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@ -16,7 +16,6 @@ struct io_nop {
struct file *file;
int result;
int fd;
int buffer;
unsigned int flags;
};
@ -40,9 +39,7 @@ int io_nop_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
else
nop->fd = -1;
if (nop->flags & IORING_NOP_FIXED_BUFFER)
nop->buffer = READ_ONCE(sqe->buf_index);
else
nop->buffer = -1;
req->buf_index = READ_ONCE(sqe->buf_index);
return 0;
}
@ -69,7 +66,7 @@ int io_nop(struct io_kiocb *req, unsigned int issue_flags)
ret = -EFAULT;
io_ring_submit_lock(ctx, issue_flags);
node = io_rsrc_node_lookup(&ctx->buf_table, nop->buffer);
node = io_rsrc_node_lookup(&ctx->buf_table, req->buf_index);
if (node) {
io_req_assign_buf_node(req, node);
ret = 0;