diff options
| author | Stefano Garzarella <sgarzare@redhat.com> | 2020-02-21 16:42:16 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-28 17:22:27 +0100 |
| commit | 8eb92c122840227cce98d301f77f2ba4d3810264 (patch) | |
| tree | 20013652714028c35bfb5764568559802df497d2 /include/linux | |
| parent | b0f5f25c5541a812e63fe147fefa2cb0e9bd0530 (diff) | |
io_uring: prevent sq_thread from spinning when it should stop
commit 7143b5ac5750f404ff3a594b34fdf3fc2f99f828 upstream.
This patch drops 'cur_mm' before calling cond_resched(), to prevent
the sq_thread from spinning even when the user process is finished.
Before this patch, if the user process ended without closing the
io_uring fd, the sq_thread continues to spin until the
'sq_thread_idle' timeout ends.
In the worst case where the 'sq_thread_idle' parameter is bigger than
INT_MAX, the sq_thread will spin forever.
Fixes: 6c271ce2f1d5 ("io_uring: add submission polling")
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions