Alice Ryhl ab44079e28 rust: alloc: add __GFP_HIGHMEM flag ... Make it possible to allocate memory that doesn't need to mapped into the kernel's address space. This flag is useful together with Page::alloc_page [1]. Rust Binder needs this for the memory that holds incoming transactions for each process. Each process will have a few megabytes of memory allocated with this flag, which is mapped into the process using vm_insert_page. When the kernel copies data for an incoming transaction into a process's memory region, it will use kmap_local_page to temporarily map pages that are being modified. There is no need for them to take up address space in the kernel when the kernel is not writing an incoming transaction into the page. Link: https://lore.kernel.org/all/20240528-alice-mm-v7-4-78222c31b8f4@google.com/ [1] Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20240607-highmem-v1-1-d18c5ca4072f@google.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org>		2024-07-08 22:39:39 +02:00
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bindings_helper.h	rust: alloc: add __GFP_HIGHMEM flag	2024-07-08 22:39:39 +02:00
lib.rs	rust: bindings: rename const binding using sed	2023-12-14 20:14:01 +01:00