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: [PATCH] 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(+)
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 8ec38b11b361e..1d1093474c1a9 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
--
2.30.2