[PATCH 1/2] mm: Export __vmalloc_node

[green@xxxxxxxxxxxxxx]

From: Oleg Drokin <green@xxxxxxxxxxxxxx>

vzalloc_node helpfully suggests to use __vmalloc_node if a more tight
control over allocation flags is needed, but in fact __vmalloc_node
is not only not exported, it's also static, so could not be used
outside of mm/vmalloc.c
Make it to be available as it was apparently intended.

Signed-off-by: Oleg Drokin <green@xxxxxxxxxxxxxx>
---
 include/linux/vmalloc.h |  3 +++
 mm/vmalloc.c            | 10 ++++------
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index b87696f..7eb2c46 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -73,6 +73,9 @@ extern void *vmalloc_exec(unsigned long size);
 extern void *vmalloc_32(unsigned long size);
 extern void *vmalloc_32_user(unsigned long size);
 extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
+extern void *__vmalloc_node(unsigned long size, unsigned long align,
+			    gfp_t gfp_mask, pgprot_t prot, int node,
+			    const void *caller);
 extern void *__vmalloc_node_range(unsigned long size, unsigned long align,
 			unsigned long start, unsigned long end, gfp_t gfp_mask,
 			pgprot_t prot, int node, const void *caller);
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 39c3388..b882d95 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1552,9 +1552,6 @@ void *vmap(struct page **pages, unsigned int count,
 }
 EXPORT_SYMBOL(vmap);
 
-static void *__vmalloc_node(unsigned long size, unsigned long align,
-			    gfp_t gfp_mask, pgprot_t prot,
-			    int node, const void *caller);
 static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
 				 pgprot_t prot, int node)
 {
@@ -1685,13 +1682,14 @@ fail:
  *	allocator with @gfp_mask flags.  Map them into contiguous
  *	kernel virtual space, using a pagetable protection of @prot.
  */
-static void *__vmalloc_node(unsigned long size, unsigned long align,
-			    gfp_t gfp_mask, pgprot_t prot,
-			    int node, const void *caller)
+void *__vmalloc_node(unsigned long size, unsigned long align,
+		     gfp_t gfp_mask, pgprot_t prot, int node,
+		     const void *caller)
 {
 	return __vmalloc_node_range(size, align, VMALLOC_START, VMALLOC_END,
 				gfp_mask, prot, node, caller);
 }
+EXPORT_SYMBOL(__vmalloc_node);
 
 void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot)
 {
-- 
2.1.0

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