From 5636c00d3e8ef1f6d1291e71edb48f727ba5a999 Mon Sep 17 00:00:00 2001 From: Pavel Begunkov Date: Wed, 18 Aug 2021 12:42:45 +0100 Subject: [PATCH] io_uring: flush completions for fallbacks io_fallback_req_func() doesn't expect anyone creating inline completions, and no one currently does that. Teach the function to flush completions preparing for further changes. Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/8b941516921f72e1a64d58932d671736892d7fff.1629286357.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- fs/io_uring.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/io_uring.c b/fs/io_uring.c index 3898f7ab14f6..926df5b00b31 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1197,6 +1197,11 @@ static void io_fallback_req_func(struct work_struct *work) percpu_ref_get(&ctx->refs); llist_for_each_entry_safe(req, tmp, node, io_task_work.fallback_node) req->io_task_work.func(req); + + mutex_lock(&ctx->uring_lock); + if (ctx->submit_state.compl_nr) + io_submit_flush_completions(ctx); + mutex_unlock(&ctx->uring_lock); percpu_ref_put(&ctx->refs); }