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io_uring: rename prev to head

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Calling "prev" a head of a link is a bit misleading. Rename it

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2019-12-17 02:22:07 +03:00 committed by Jens Axboe
parent ce35a47a3a
commit 9d76377f7e
1 changed files with 5 additions and 5 deletions
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10
fs/io_uring.c
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@ -4073,10 +4073,10 @@ err_req:
* conditions are true (normal request), then just queue it.
*/
if (*link) {
struct io_kiocb *prev = *link;
struct io_kiocb *head = *link;
if (sqe->flags & IOSQE_IO_DRAIN)
(*link)->flags |= REQ_F_DRAIN_LINK | REQ_F_IO_DRAIN;
head->flags |= REQ_F_DRAIN_LINK | REQ_F_IO_DRAIN;
if (sqe->flags & IOSQE_IO_HARDLINK)
req->flags |= REQ_F_HARDLINK;
@ -4089,11 +4089,11 @@ err_req:
ret = io_req_defer_prep(req, sqe);
if (ret) {
/* fail even hard links since we don't submit */
prev->flags |= REQ_F_FAIL_LINK;
head->flags |= REQ_F_FAIL_LINK;
goto err_req;
}
trace_io_uring_link(ctx, req, prev);
list_add_tail(&req->link_list, &prev->link_list);
trace_io_uring_link(ctx, req, head);
list_add_tail(&req->link_list, &head->link_list);
} else if (sqe->flags & (IOSQE_IO_LINK|IOSQE_IO_HARDLINK)) {
req->flags |= REQ_F_LINK;
if (sqe->flags & IOSQE_IO_HARDLINK)