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io_uring: clean io_req_find_next() fast check 

Indirectly io_req_find_next() is called for every request, optimise the
check by testing flags as it was long before -- __io_req_find_next()
tolerates false-positives well (i.e. link==NULL), and those should be
really rare.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2021-02-12 18:41:16 +00:00 committed by Jens Axboe
parent dc0eced5d9
commit cdbff98223
1 changed files with 1 additions and 1 deletions
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2
fs/io_uring.c
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@ -2172,7 +2172,7 @@ static struct io_kiocb *__io_req_find_next(struct io_kiocb *req)
static inline struct io_kiocb *io_req_find_next(struct io_kiocb *req)
{
if (likely(!(req->link) && !(req->flags & REQ_F_LINK_TIMEOUT)))
if (likely(!(req->flags & (REQ_F_LINK|REQ_F_HARDLINK))))
return NULL;
return __io_req_find_next(req);
}