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io_uring: improve request linking trace

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Right now any link trace is listed as being linked after the head
request in the chain, but it's more useful to note explicitly which
request a given new request is chained to. Change the link trace to dump
the tail request so that chains are immediately apparent when looking at
traces.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2024-09-19 23:38:01 -06:00
parent 04beb6e0e0
commit eed138d67d
1 changed files with 1 additions and 1 deletions
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io_uring/io_uring.c
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@ -2153,7 +2153,7 @@ static inline int io_submit_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req,
* conditions are true (normal request), then just queue it.
*/
if (unlikely(link->head)) {
trace_io_uring_link(req, link->head);
trace_io_uring_link(req, link->last);
link->last->link = req;
link->last = req;