linux-kernel - [PATCH 1/4] vmalloc: export vrealloc_node_align

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Message-ID: <20251202-inline-helpers-v1-1-879dae33a66a@google.com>
Date: Tue, 02 Dec 2025 20:27:56 +0000
From: Alice Ryhl <aliceryhl@...gle.com>
To: Miguel Ojeda <ojeda@...nel.org>
Cc: Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	"Björn Roy Baron" <bjorn3_gh@...tonmail.com>, Benno Lossin <lossin@...nel.org>, 
	Andreas Hindborg <a.hindborg@...nel.org>, Trevor Gross <tmgross@...ch.edu>, 
	Danilo Krummrich <dakr@...nel.org>, Alexandre Courbot <acourbot@...dia.com>, Will Deacon <will@...nel.org>, 
	Peter Zijlstra <peterz@...radead.org>, Mark Rutland <mark.rutland@....com>, 
	Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <nick.desaulniers+lkml@...il.com>, 
	Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, 
	Nicolas Schier <nicolas.schier@...ux.dev>, Andrew Morton <akpm@...ux-foundation.org>, 
	Uladzislau Rezki <urezki@...il.com>, rust-for-linux@...r.kernel.org, 
	linux-kernel@...r.kernel.org, llvm@...ts.linux.dev, 
	linux-kbuild@...r.kernel.org, linux-mm@...ck.org, 
	nouveau@...ts.freedesktop.org, Alice Ryhl <aliceryhl@...gle.com>
Subject: [PATCH 1/4] vmalloc: export vrealloc_node_align_noprof

This symbol is used from the Nova driver, so it needs to be exported to
avoid a build failure when building Nova as a module.

ERROR: modpost: "vrealloc_node_align_noprof" [drivers/gpu/nova-core/nova_core.ko] undefined!
ERROR: modpost: "vrealloc_node_align_noprof" [samples/rust/rust_dma.ko] undefined!

This error is only triggered if inlining of helpers into Rust is
enabled.

Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>
---
 mm/vmalloc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 798b2ed21e46059f341ed0d46c7fe56bbe357b22..e086d00f04d61ebd481cb84e3dfea51d8a2ffc57 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -4200,6 +4200,7 @@ void *vrealloc_node_align_noprof(const void *p, size_t size, unsigned long align
 
 	return n;
 }
+EXPORT_SYMBOL(vrealloc_node_align_noprof);
 
 #if defined(CONFIG_64BIT) && defined(CONFIG_ZONE_DMA32)
 #define GFP_VMALLOC32 (GFP_DMA32 | GFP_KERNEL)

-- 
2.52.0.158.g65b55ccf14-goog