[PATCH v5 3/6] rust: bitmap: rename IdPool::new() to with_capacity()

[Alice Ryhl <aliceryhl@google.com>]

We want to change ::new() to take no parameters and produce a pool that
is as large as possible while also being inline because that is the
constructor that Rust Binder actually needs.

However, to avoid complications in examples, we still need the current
constructor. So rename it to with_capacity(), which is the idiomatic
Rust name for this kind constructor.

Reviewed-by: Burak Emir <bqe@google.com>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
---
 rust/kernel/id_pool.rs | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/rust/kernel/id_pool.rs b/rust/kernel/id_pool.rs
index 8f68b45a3da1f62dd0d010480837de49b9a343ba..90836b05c6155f98ab8393c8291749f408dbd4da 100644
--- a/rust/kernel/id_pool.rs
+++ b/rust/kernel/id_pool.rs
@@ -26,7 +26,7 @@
 /// use kernel::alloc::{AllocError, flags::GFP_KERNEL};
 /// use kernel::id_pool::IdPool;
 ///
-/// let mut pool = IdPool::new(64, GFP_KERNEL)?;
+/// let mut pool = IdPool::with_capacity(64, GFP_KERNEL)?;
 /// for i in 0..64 {
 ///     assert_eq!(i, pool.acquire_next_id(i).ok_or(ENOSPC)?);
 /// }
@@ -93,14 +93,14 @@ pub fn realloc(&self, flags: Flags) -> Result<PoolResizer, AllocError> {
 }
 
 impl IdPool {
-    /// Constructs a new [`IdPool`].
+    /// Constructs a new [`IdPool`] with space for a specific number of bits.
     ///
     /// A capacity below [`MAX_INLINE_LEN`] is adjusted to [`MAX_INLINE_LEN`].
     ///
     /// [`MAX_INLINE_LEN`]: BitmapVec::MAX_INLINE_LEN
     #[inline]
-    pub fn new(num_ids: usize, flags: Flags) -> Result<Self, AllocError> {
-        let num_ids = usize::max(num_ids, BitmapVec::MAX_INLINE_LEN);
+    pub fn with_capacity(num_ids: usize, flags: Flags) -> Result<Self, AllocError> {
+        let num_ids = usize::max(num_ids, BITS_PER_LONG);
         let map = BitmapVec::new(num_ids, flags)?;
         Ok(Self { map })
     }
@@ -123,7 +123,7 @@ pub fn capacity(&self) -> usize {
     /// use kernel::alloc::{AllocError, flags::GFP_KERNEL};
     /// use kernel::id_pool::{ReallocRequest, IdPool};
     ///
-    /// let mut pool = IdPool::new(1024, GFP_KERNEL)?;
+    /// let mut pool = IdPool::with_capacity(1024, GFP_KERNEL)?;
     /// let alloc_request = pool.shrink_request().ok_or(AllocError)?;
     /// let resizer = alloc_request.realloc(GFP_KERNEL)?;
     /// pool.shrink(resizer);

-- 
2.51.2.1041.gc1ab5b90ca-goog