From: Pavel Begunkov <asml.silence@gmail.com>
Date: Sat, 20 Feb 2021 15:17:18 +0000 (+0000)
Subject: io_uring: run task_work on io_uring_register()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b6c23dd5a483174f386e4c2e1711d9532e090c00;p=linux.git

io_uring: run task_work on io_uring_register()

Do run task_work before io_uring_register(), that might make a first
quiesce round much nicer. We generally do that for any syscall invocation
to avoid spurious -EINTR/-ERESTARTSYS, for task_work that we generate.
This patch brings io_uring_register() inline with the two other io_uring
syscalls.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 1501f20fde844..3ecc3c08bf122 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -10200,6 +10200,8 @@ SYSCALL_DEFINE4(io_uring_register, unsigned int, fd, unsigned int, opcode,
 
 	ctx = f.file->private_data;
 
+	io_run_task_work();
+
 	mutex_lock(&ctx->uring_lock);
 	ret = __io_uring_register(ctx, opcode, arg, nr_args);
 	mutex_unlock(&ctx->uring_lock);