From d60769075013ec7933a715b5b1ac37eb77c33420 Mon Sep 17 00:00:00 2001
From: Alice Ryhl <aliceryhl@google.com>
Date: Wed, 7 Jan 2026 15:16:42 +0000
Subject: [PATCH] vmalloc: export vrealloc_node_align_noprof
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

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 helpers are inlined into Rust.  Otherwise,
Nova will call the exported symbol

	rust_helper_vrealloc_node_align()

instead. There is no Fixes: tag as that feature is still WIP.

I used non-GPL EXPORT_SYMBOL to match the rest of the file, but let me
know if I should use EXPORT_SYMBOL_GPL.

Link: https://lkml.kernel.org/r/20260107-export-vrealloc_node_align_noprof-v1-1-a581bec13054@google.com
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Cc: Andreas Hindborg <a.hindborg@kernel.org>
Cc: Björn Roy Baron <bjorn3_gh@protonmail.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Gary Guo <gary@garyguo.net>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Trevor Gross <tmgross@umich.edu>
Cc: Uladzislau Rezki <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/vmalloc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index ca4c653286870..316762e6c9b42 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -4370,6 +4370,7 @@ need_realloc:
 
 	return n;
 }
+EXPORT_SYMBOL(vrealloc_node_align_noprof);
 
 #if defined(CONFIG_64BIT) && defined(CONFIG_ZONE_DMA32)
 #define GFP_VMALLOC32 (GFP_DMA32 | GFP_KERNEL)
-- 
2.47.3