From: Pavel Begunkov <asml.silence@gmail.com> mainline inclusion from mainline-5.8-rc1 commit 360428f8c0cd857006a8a3f515946285370489ac category: feature bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=27 CVE: NA --------------------------- Separate flushing offset timeouts io_commit_cqring() by moving it into a helper. Just a preparation, makes following patches clearer. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: yangerkun <yangerkun@huawei.com> Reviewed-by: zhangyi (F) <yi.zhang@huawei.com> Signed-off-by: Cheng Jian <cj.chengjian@huawei.com> --- fs/io_uring.c | 34 ++++++++++++++-------------------- 1 file changed, 14 insertions(+), 20 deletions(-) diff --git a/fs/io_uring.c b/fs/io_uring.c index 72991fb10d28..4ec02d11110f 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -989,23 +989,6 @@ static inline bool req_need_defer(struct io_kiocb *req) return false; } -static struct io_kiocb *io_get_timeout_req(struct io_ring_ctx *ctx) -{ - struct io_kiocb *req; - - req = list_first_entry_or_null(&ctx->timeout_list, struct io_kiocb, list); - if (req) { - if (req->flags & REQ_F_TIMEOUT_NOSEQ) - return NULL; - if (!__req_need_defer(req)) { - list_del_init(&req->list); - return req; - } - } - - return NULL; -} - static void __io_commit_cqring(struct io_ring_ctx *ctx) { struct io_rings *rings = ctx->rings; @@ -1134,13 +1117,24 @@ static void __io_queue_deferred(struct io_ring_ctx *ctx) } while (!list_empty(&ctx->defer_list)); } -static void io_commit_cqring(struct io_ring_ctx *ctx) +static void io_flush_timeouts(struct io_ring_ctx *ctx) { - struct io_kiocb *req; + while (!list_empty(&ctx->timeout_list)) { + struct io_kiocb *req = list_first_entry(&ctx->timeout_list, + struct io_kiocb, list); - while ((req = io_get_timeout_req(ctx)) != NULL) + if (req->flags & REQ_F_TIMEOUT_NOSEQ) + break; + if (__req_need_defer(req)) + break; + list_del_init(&req->list); io_kill_timeout(req); + } +} +static void io_commit_cqring(struct io_ring_ctx *ctx) +{ + io_flush_timeouts(ctx); __io_commit_cqring(ctx); if (unlikely(!list_empty(&ctx->defer_list))) -- 2.25.1