mm: io_uring: allow oom-killer from io_uring_setup
On an overcommitted system which is running multiple workloads of varying priorities, it is preferred to trigger an oom-killer to kill a low priority workload than to let the high priority workload receiving ENOMEMs. On our memory overcommitted systems, we are seeing a lot of ENOMEMs instead of oom-kills because io_uring_setup callchain is using __GFP_NORETRY gfp flag which avoids the oom-killer. Let's remove it and allow the oom-killer to kill a lower priority job. Signed-off-by: Shakeel Butt <shakeelb@google.com> Link: https://lore.kernel.org/r/20220125051736.2981459-1-shakeelb@google.comSigned-off-by: Jens Axboe <axboe@kernel.dk>
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