Re: [PATCH v1 02/16] mm/memory: remove "zap_details" parameter from zap_page_range_single()

On Mon, Mar 02, 2026 at 09:18:45AM +0100, David Hildenbrand (Arm) wrote:

On 2/28/26 13:38, Alice Ryhl wrote:

quoted

On Fri, Feb 27, 2026 at 09:08:33PM +0100, David Hildenbrand (Arm) wrote:

quoted

Nobody except memory.c should really set that parameter to non-NULL. So
let's just drop it and make unmap_mapping_range_vma() use
zap_page_range_single_batched() instead.

Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>

quoted

diff --git a/rust/kernel/mm/virt.rs b/rust/kernel/mm/virt.rs
index da21d65ccd20..b8e59e4420f3 100644
--- a/rust/kernel/mm/virt.rs
+++ b/rust/kernel/mm/virt.rs

@@ -124,7 +124,7 @@ pub fn zap_page_range_single(&self, address: usize, size: usize) {
         // sufficient for this method call. This method has no requirements on the vma flags. The
         // address range is checked to be within the vma.
         unsafe {
-            bindings::zap_page_range_single(self.as_ptr(), address, size, core::ptr::null_mut())
+            bindings::zap_page_range_single(self.as_ptr(), address, size)
         };

Please run rustfmt on Rust changes. Here, rustfmt leads to this being
formatted on a single line:

Having to run tooling I don't even have installed when removing a single
function parameter; did not expect that :)

Well, rustfmt comes with the compiler, and it would be ideal to build
test changes before sending them :)

But no worries, I took care of testing it. Thanks for taking the time to
update the Rust code as well.

Documentation/rust/quick-start.rst has details for most distros.

Alice