From 84914a4c6dee7e711d50b2566ee75c4f15faabe5 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 15 Apr 2021 17:33:32 +0800 Subject: [PATCH] io_uring: cleanup return values from the queueing functions mainline inclusion from mainline-5.5-rc1 commit 0e0702dac26b282603261f04a62711a2d9aac17b category: feature bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=27 CVE: NA --------------------------- __io_queue_sqe(), io_queue_sqe(), io_queue_link_head() all return 0/err, but the caller doesn't care since the errors are handled inline. Clean these up and just make them void. Signed-off-by: Jens Axboe Signed-off-by: Zhihao Cheng Signed-off-by: yangerkun Reviewed-by: zhangyi (F) Signed-off-by: Cheng Jian --- fs/io_uring.c | 28 ++++++++++++---------------- 1 file changed, 12 insertions(+), 16 deletions(-) diff --git a/fs/io_uring.c b/fs/io_uring.c index aaaf48a84d82..9b10335b68fc 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2839,7 +2839,7 @@ static struct io_kiocb *io_prep_linked_timeout(struct io_kiocb *req, return nxt; } -static int __io_queue_sqe(struct io_kiocb *req) +static void __io_queue_sqe(struct io_kiocb *req) { enum hrtimer_mode mode; struct io_kiocb *nxt; @@ -2884,7 +2884,7 @@ static int __io_queue_sqe(struct io_kiocb *req) if (nxt) io_queue_linked_timeout(nxt, &ts, &mode); - return 0; + return; } } @@ -2906,11 +2906,9 @@ static int __io_queue_sqe(struct io_kiocb *req) req->flags |= REQ_F_FAIL_LINK; io_put_req(req); } - - return ret; } -static int io_queue_sqe(struct io_kiocb *req) +static void io_queue_sqe(struct io_kiocb *req) { int ret; @@ -2920,20 +2918,20 @@ static int io_queue_sqe(struct io_kiocb *req) io_cqring_add_event(req, ret); io_double_put_req(req); } - return 0; - } - - return __io_queue_sqe(req); + } else + __io_queue_sqe(req); } -static int io_queue_link_head(struct io_kiocb *req, struct io_kiocb *shadow) +static void io_queue_link_head(struct io_kiocb *req, struct io_kiocb *shadow) { int ret; int need_submit = false; struct io_ring_ctx *ctx = req->ctx; - if (!shadow) - return io_queue_sqe(req); + if (!shadow) { + io_queue_sqe(req); + return; + } /* * Mark the first IO in link list as DRAIN, let all the following @@ -2947,7 +2945,7 @@ static int io_queue_link_head(struct io_kiocb *req, struct io_kiocb *shadow) io_cqring_add_event(req, ret); io_double_put_req(req); __io_free_req(shadow); - return 0; + return; } } else { /* @@ -2964,9 +2962,7 @@ static int io_queue_link_head(struct io_kiocb *req, struct io_kiocb *shadow) spin_unlock_irq(&ctx->completion_lock); if (need_submit) - return __io_queue_sqe(req); - - return 0; + __io_queue_sqe(req); } #define SQE_VALID_FLAGS (IOSQE_FIXED_FILE|IOSQE_IO_DRAIN|IOSQE_IO_LINK) -- GitLab