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io_uring: pass only !null to io_req_find_next()

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Make io_req_find_next() and io_req_link_next() to accept only non-null
nxt, and handle it in callers.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2019-11-21 23:21:01 +03:00 committed by Jens Axboe
parent 70cf9f3270
commit 944e58bfed
1 changed files with 7 additions and 2 deletions
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9
fs/io_uring.c
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@ -908,7 +908,7 @@ static void io_req_link_next(struct io_kiocb *req, struct io_kiocb **nxtptr)
* in this context instead of having to queue up new async work.
*/
if (nxt) {
if (nxtptr && io_wq_current_is_worker())
if (io_wq_current_is_worker())
*nxtptr = nxt;
else
io_queue_async_work(nxt);
@ -986,8 +986,13 @@ static void io_req_find_next(struct io_kiocb *req, struct io_kiocb **nxt)
static void io_free_req(struct io_kiocb *req)
{
io_req_find_next(req, NULL);
struct io_kiocb *nxt = NULL;
io_req_find_next(req, &nxt);
__io_free_req(req);
if (nxt)
io_queue_async_work(nxt);
}
/*