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[ Upstream commit65a8fc30fb] To avoid racing with other user memory reservations, immediately account full amount of pages to be pinned. Fixes:2251334dca("rdma/siw: application buffer management") Reported-by: Jason Gunthorpe <jgg@nvidia.com> Suggested-by: Alistair Popple <apopple@nvidia.com> Reviewed-by: Alistair Popple <apopple@nvidia.com> Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com> Link: https://lore.kernel.org/r/20230202101000.402990-1-bmt@zurich.ibm.com Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>