mm: remove both instances of __vmalloc_node_flags

The real version just had a few callers that can open code it and remove
one layer of indirection.  The nommu stub was public but only had a single
caller, so remove it and avoid a CONFIG_MMU ifdef in vmalloc.h.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Gao Xiang <xiang@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Kelley <mikelley@microsoft.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200414131348.444715-24-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/vmalloc.h

@@ -115,17 +115,8 @@ extern void *__vmalloc_node_range(unsigned long size, unsigned long align,
 			unsigned long start, unsigned long end, gfp_t gfp_mask,
 			pgprot_t prot, unsigned long vm_flags, int node,
 			const void *caller);
-#ifndef CONFIG_MMU
-extern void *__vmalloc_node_flags(unsigned long size, int node, gfp_t flags);
-static inline void *__vmalloc_node_flags_caller(unsigned long size, int node,
-						gfp_t flags, void *caller)
-{
-	return __vmalloc_node_flags(size, node, flags);
-}
-#else
 extern void *__vmalloc_node_flags_caller(unsigned long size,
 					 int node, gfp_t flags, void *caller);
-#endif
 
 extern void vfree(const void *addr);
 extern void vfree_atomic(const void *addr);

mm/nommu.c

@@ -150,7 +150,8 @@ void *__vmalloc(unsigned long size, gfp_t gfp_mask)
 }
 EXPORT_SYMBOL(__vmalloc);
 
-void *__vmalloc_node_flags(unsigned long size, int node, gfp_t flags)
+void *__vmalloc_node_flags_caller(unsigned long size, int node, gfp_t flags,
+		void *caller)
 {
 	return __vmalloc(size, flags);
 }

mm/vmalloc.c

@@ -2567,14 +2567,6 @@ void *__vmalloc(unsigned long size, gfp_t gfp_mask)
 }
 EXPORT_SYMBOL(__vmalloc);
 
-static inline void *__vmalloc_node_flags(unsigned long size,
-					int node, gfp_t flags)
-{
-	return __vmalloc_node(size, 1, flags, node,
-				__builtin_return_address(0));
-}
-
-
 void *__vmalloc_node_flags_caller(unsigned long size, int node, gfp_t flags,
 				  void *caller)
 {
@@ -2595,8 +2587,8 @@ void *__vmalloc_node_flags_caller(unsigned long size, int node, gfp_t flags,
  */
 void *vmalloc(unsigned long size)
 {
-	return __vmalloc_node_flags(size, NUMA_NO_NODE,
-				    GFP_KERNEL);
+	return __vmalloc_node(size, 1, GFP_KERNEL, NUMA_NO_NODE,
+				__builtin_return_address(0));
 }
 EXPORT_SYMBOL(vmalloc);
 
@@ -2615,8 +2607,8 @@ EXPORT_SYMBOL(vmalloc);
  */
 void *vzalloc(unsigned long size)
 {
-	return __vmalloc_node_flags(size, NUMA_NO_NODE,
-				GFP_KERNEL | __GFP_ZERO);
+	return __vmalloc_node(size, 1, GFP_KERNEL | __GFP_ZERO, NUMA_NO_NODE,
+				__builtin_return_address(0));
 }
 EXPORT_SYMBOL(vzalloc);
 
@@ -2671,8 +2663,8 @@ EXPORT_SYMBOL(vmalloc_node);
  */
 void *vzalloc_node(unsigned long size, int node)
 {
-	return __vmalloc_node_flags(size, node,
-			 GFP_KERNEL | __GFP_ZERO);
+	return __vmalloc_node(size, 1, GFP_KERNEL | __GFP_ZERO, node,
+				__builtin_return_address(0));
 }
 EXPORT_SYMBOL(vzalloc_node);