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| author | Dave Airlie <airlied@redhat.com> | 2025-05-06 16:39:25 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2025-05-06 16:39:25 +1000 |
| commit | 5e0c67998152bdb91b056160449ee542b86271a5 (patch) | |
| tree | dff9fd979b0319dd2ed873a77246950d7ed95ceb /rust/pin-init/src/alloc.rs | |
| parent | 135130db6ee6500e6c82cf44dd831c3fe15f7b5f (diff) | |
| parent | 92a09c47464d040866cf2b4cd052bc60555185fb (diff) | |
BackMerge tag 'v6.15-rc5' into drm-next
Linux 6.15-rc5, requested by tzimmerman for fixes required in drm-next.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'rust/pin-init/src/alloc.rs')
| -rw-r--r-- | rust/pin-init/src/alloc.rs | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/rust/pin-init/src/alloc.rs b/rust/pin-init/src/alloc.rs index e16baa3b434e..5017f57442d8 100644 --- a/rust/pin-init/src/alloc.rs +++ b/rust/pin-init/src/alloc.rs @@ -17,11 +17,9 @@ use crate::{ pub extern crate alloc; -// SAFETY: All zeros is equivalent to `None` (option layout optimization guarantee). -// -// In this case we are allowed to use `T: ?Sized`, since all zeros is the `None` variant and there -// is no problem with a VTABLE pointer being null. -unsafe impl<T: ?Sized> ZeroableOption for Box<T> {} +// SAFETY: All zeros is equivalent to `None` (option layout optimization guarantee: +// <https://doc.rust-lang.org/stable/std/option/index.html#representation>). +unsafe impl<T> ZeroableOption for Box<T> {} /// Smart pointer that can initialize memory in-place. pub trait InPlaceInit<T>: Sized { |