RDMA/efa: Use __GFP_RETRY_MAYFAIL for ring allocations

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.

Link: https://patch.msgid.link/r/20260917105101.9365-1-mrgolin@amazon.com
Reviewed-by: Firas Jahjah <firasj@amazon.com>
Reviewed-by: Yonatan Nachum <ynachum@amazon.com>
Signed-off-by: Michael Margolin <mrgolin@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

0 files changed, 0 insertions, 0 deletions