From 219f8a2e25f0abbe222b170a0de2fd38c22d43ad Mon Sep 17 00:00:00 2001
From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Thu, 11 Jul 2019 20:54:43 -0700
Subject: include/linux/mm_types.h: ifdef struct
 vm_area_struct::swap_readahead_info

The field is only used in swap code.

Link: http://lkml.kernel.org/r/20190503190500.GA30589@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/linux/mm_types.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'include')

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 8ec38b11b361..1d1093474c1a 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -329,7 +329,9 @@ struct vm_area_struct {
 	struct file * vm_file;		/* File we map to (can be NULL). */
 	void * vm_private_data;		/* was vm_pte (shared mem) */
 
+#ifdef CONFIG_SWAP
 	atomic_long_t swap_readahead_info;
+#endif
 #ifndef CONFIG_MMU
 	struct vm_region *vm_region;	/* NOMMU mapping region */
 #endif
-- 
cgit