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Shivam Kalra
47ac2a4b5c
Implement shrink_to method specifically for `KVVec` (i.e., `Vec<T, KVmalloc>`). `shrink_to` reduces the vector's capacity to a specified minimum. For kmalloc-backed allocations, the method delegates to realloc(), letting the allocator decide whether shrinking is worthwhile. For vmalloc-backed allocations (detected via is_vmalloc_addr), shrinking only occurs if at least one page of memory can be freed, using an explicit alloc+copy+free since vrealloc does not yet support in-place shrinking. A TODO note marks this for future replacement with a generic shrink_to for all allocators that uses A::realloc() once the underlying allocators properly support shrinking via realloc. Suggested-by: Alice Ryhl <aliceryhl@google.com> Suggested-by: Danilo Krummrich <dakr@kernel.org> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Acked-by: Danilo Krummrich <dakr@kernel.org> Signed-off-by: Shivam Kalra <shivamkalra98@zohomail.in> Link: https://patch.msgid.link/20260216-binder-shrink-vec-v3-v6-1-ece8e8593e53@zohomail.in Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>