[PATCH] rust: doc: disable doc inlining for all prelude items

[Gary Guo <gary@kernel.org>]

From: Gary Guo <gary@garyguo.net>

Somehow the rustdoc heuristics determined that a large chunk of the items
found in prelude should have documentation inlined. This bloats the
generate documentation size.

Also, for crates that optimize documentation with `cfg(doc)`, as the
documentation inlining makes use of the metadata compiled by just rustc, it
will not pick up the `cfg(doc)` attributes from the inlined documentation.
pin-init for example optimizes tuple/fn rendering using the nightly
fake_variadic feature [1], but this is missing from the inlined version
[2].

Thus, mark all prelude items as `#[doc(no_inline)]`.

Link: https://rust.docs.kernel.org/next/pin_init/trait.Zeroable.html#impl-Zeroable-for-(J,) [1]
Link: https://rust.docs.kernel.org/next/kernel/prelude/trait.Zeroable.html#impl-Zeroable-for-(J,) [2]
Signed-off-by: Gary Guo <gary@garyguo.net>
---
 rust/kernel/prelude.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rust/kernel/prelude.rs b/rust/kernel/prelude.rs
index 44edf72a4a24..bcd4e7f90bc7 100644
--- a/rust/kernel/prelude.rs
+++ b/rust/kernel/prelude.rs
@@ -22,6 +22,7 @@
     pin::Pin, //
 };
 
+#[doc(no_inline)]
 pub use ::ffi::{
     c_char,
     c_int,
@@ -47,6 +48,7 @@
     vtable, //
 };
 
+#[doc(no_inline)]
 pub use pin_init::{
     init,
     pin_data,
@@ -58,6 +60,7 @@
     Zeroable, //
 };
 
+#[doc(no_inline)]
 pub use super::{
     alloc::{
         flags::*,

base-commit: 1c7cc4904160c6fc6377564140062d68a3dc93a0
-- 
2.51.2