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f609e89ae8
Add a dedicated gmem_inode structure and a slab-allocated inode cache for guest memory backing, similar to how shmem handles inodes. This adds the necessary allocation/destruction functions and prepares for upcoming guest_memfd NUMA policy support changes. Using a dedicated structure will also allow for additional cleanups, e.g. to track flags in gmem_inode instead of i_private. Signed-off-by: Shivank Garg <shivankg@amd.com> Tested-by: Ashish Kalra <ashish.kalra@amd.com> [sean: s/kvm_gmem_inode_info/gmem_inode, name init_once()] Reviewed-by: Ackerley Tng <ackerleytng@google.com> Tested-by: Ackerley Tng <ackerleytng@google.com> Link: https://lore.kernel.org/r/20251016172853.52451-5-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>