Re: [PATCH for-next] RDMA/efa: Use __GFP_RETRY_MAYFAIL for ring allocations

[Jason Gunthorpe <jgg@nvidia.com>]

On Thu, Sep 17, 2026 at 10:51:01AM +0000, Michael Margolin wrote:
> RQ and CQ ring buffers require physically contiguous memory. On
> systems under memory pressure, high-order allocations can fail
> even when sufficient free memory exists because the allocator
> gives up after a single reclaim and compaction attempt for
> costly-order requests that lack __GFP_RETRY_MAYFAIL.
> 
> Add __GFP_RETRY_MAYFAIL to the GFP flags in efa_zalloc_mapped()
> to allow retries with escalating compaction priority and release
> of highatomic reserves before giving up.
> 
> Reviewed-by: Firas Jahjah <firasj@amazon.com>
> Reviewed-by: Yonatan Nachum <ynachum@amazon.com>
> Signed-off-by: Michael Margolin <mrgolin@amazon.com>
> ---
>  drivers/infiniband/hw/efa/efa_verbs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied to for-next, thanks

Jason