From 548d819d1eed7b6bf86d36c8de2fbc54b69db571 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 25 Mar 2021 10:21:35 -0600 Subject: [PATCH] io_uring: allow SQPOLL without CAP_SYS_ADMIN or CAP_SYS_NICE Now that we have any worker being attached to the original task as threads, accounting of CPU time is directly attributed to the original task as well. This means that we no longer have to restrict SQPOLL to needing elevated privileges, as it's really no different from just having the task spawn a busy looping thread in userspace. Reported-by: Stefano Garzarella Signed-off-by: Jens Axboe --- fs/io_uring.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/fs/io_uring.c b/fs/io_uring.c index 9a85042..852f9e9 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -8011,10 +8011,6 @@ static int io_sq_offload_create(struct io_ring_ctx *ctx, struct io_sq_data *sqd; bool attached; - ret = -EPERM; - if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_NICE)) - goto err; - sqd = io_get_sq_data(p, &attached); if (IS_ERR(sqd)) { ret = PTR_ERR(sqd); -- 2.7.4