From d99dc586ca7c7729450af2ed39ca1483c0eb7b5c Mon Sep 17 00:00:00 2001 From: "Yury Norov (NVIDIA)" Date: Thu, 23 Oct 2025 13:16:06 -0400 Subject: uaccess: decouple INLINE_COPY_FROM_USER and CONFIG_RUST MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit 1f9a8286bc0c ("uaccess: always export _copy_[from|to]_user with CONFIG_RUST") exports _copy_{from,to}_user() unconditionally, if RUST is enabled. This pollutes exported symbols namespace, and spreads RUST ifdefery in core files. It's better to declare a corresponding helper under the rust/helpers, similarly to how non-underscored copy_{from,to}_user() is handled. [yury.norov@gmail.com: drop rust part of comment for _copy_from_user(), per Alice] Link: https://lkml.kernel.org/r/20251024154754.99768-1-yury.norov@gmail.com Link: https://lkml.kernel.org/r/20251023171607.1171534-1-yury.norov@gmail.com Signed-off-by: Yury Norov (NVIDIA) Acked-by: Arnd Bergmann Acked-by: Miguel Ojeda Reviewed-by: Alice Ryhl Tested-by: Alice Ryhl Cc: Alex Gaynor Cc: Andreas Hindborg Cc: Björn Roy Baron Cc: Boqun Feng Cc: Danilo Krummrich Cc: Gary Guo Cc: John Hubbard Cc: Trevor Gross Signed-off-by: Andrew Morton --- rust/helpers/uaccess.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'rust/helpers/uaccess.c') diff --git a/rust/helpers/uaccess.c b/rust/helpers/uaccess.c index f49076f813cd..4629b2d15529 100644 --- a/rust/helpers/uaccess.c +++ b/rust/helpers/uaccess.c @@ -13,3 +13,15 @@ unsigned long rust_helper_copy_to_user(void __user *to, const void *from, { return copy_to_user(to, from, n); } + +#ifdef INLINE_COPY_FROM_USER +unsigned long rust_helper__copy_from_user(void *to, const void __user *from, unsigned long n) +{ + return _inline_copy_from_user(to, from, n); +} + +unsigned long rust_helper__copy_to_user(void __user *to, const void *from, unsigned long n) +{ + return _inline_copy_to_user(to, from, n); +} +#endif -- cgit v1.2.3