diff options
| author | Shakeel Butt <shakeelb@google.com> | 2022-01-24 21:17:36 -0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-02-07 08:44:01 -0700 |
| commit | 0a3f1e0beacf6cc8ae5f846b0641c1df476e83d6 (patch) | |
| tree | 50d13631aa49f0bb59a172c1d27f15699d2aa5ad | |
| parent | 0d7c1153d9291197c1dc473cfaade77acb874b4b (diff) | |
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.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | fs/io_uring.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 3445c4da0153..77b9c7e4793b 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -8932,10 +8932,9 @@ static void io_mem_free(void *ptr) static void *io_mem_alloc(size_t size) { - gfp_t gfp_flags = GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN | __GFP_COMP | - __GFP_NORETRY | __GFP_ACCOUNT; + gfp_t gfp = GFP_KERNEL_ACCOUNT | __GFP_ZERO | __GFP_NOWARN | __GFP_COMP; - return (void *) __get_free_pages(gfp_flags, get_order(size)); + return (void *) __get_free_pages(gfp, get_order(size)); } static unsigned long rings_size(unsigned sq_entries, unsigned cq_entries, |