diff options
| author | Alice Ryhl <aliceryhl@google.com> | 2025-11-25 13:59:38 +0000 |
|---|---|---|
| committer | Yury Norov (NVIDIA) <yury.norov@gmail.com> | 2025-11-26 11:25:35 -0500 |
| commit | d0cf6512bbcf77afb6102f886fcd7fd48b7ae043 (patch) | |
| tree | 77c8147015c71eddf514d99e45b54749f53815d8 | |
| parent | f5535d78e12600deb30a9fb3c628c425f0caec21 (diff) | |
rust: bitmap: add BitmapVec::new_inline()
This constructor is useful when you just want to create a BitmapVec
without allocating but don't care how large it is.
Acked-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
Reviewed-by: Burak Emir <bqe@google.com>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
| -rw-r--r-- | rust/kernel/bitmap.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/rust/kernel/bitmap.rs b/rust/kernel/bitmap.rs index 0705646c6251..83d7dea99137 100644 --- a/rust/kernel/bitmap.rs +++ b/rust/kernel/bitmap.rs @@ -230,6 +230,16 @@ impl BitmapVec { /// The maximum length that uses the inline representation. pub const MAX_INLINE_LEN: usize = usize::BITS as usize; + /// Construct a longest possible inline [`BitmapVec`]. + #[inline] + pub fn new_inline() -> Self { + // INVARIANT: `nbits <= MAX_INLINE_LEN`, so an inline bitmap is the right repr. + BitmapVec { + repr: BitmapRepr { bitmap: 0 }, + nbits: BitmapVec::MAX_INLINE_LEN, + } + } + /// Constructs a new [`BitmapVec`]. /// /// Fails with [`AllocError`] when the [`BitmapVec`] could not be allocated. This |