From 53a66daf5b8b2db81aaeb23d1523705226f1398f Mon Sep 17 00:00:00 2001
From: Wei Yang <richardw.yang@linux.intel.com>
Date: Sat, 30 Nov 2019 17:50:46 -0800
Subject: [PATCH] mm/mmap.c: __vma_unlink_prev() is not necessary now
References: bnc#1155780 (VM/FS functional and performance backports)
Patch-mainline: v5.5-rc1
Git-commit: 9d81fbe09a5669acf28fccd4f51f00b43534a0c9
The third parameter of __vma_unlink_common() could differentiate these two
types. __vma_unlink_prev() is not necessary now.
Link: http://lkml.kernel.org/r/20191006012636.31521-2-richardw.yang@linux.intel.com
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
mm/mmap.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/mm/mmap.c b/mm/mmap.c
index 693d47a9eb36..32ae0189fa71 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -693,13 +693,6 @@ static __always_inline void __vma_unlink_common(struct mm_struct *mm,
vmacache_invalidate(mm);
}
-static inline void __vma_unlink_prev(struct mm_struct *mm,
- struct vm_area_struct *vma,
- struct vm_area_struct *prev)
-{
- __vma_unlink_common(mm, vma, vma);
-}
-
/*
* We cannot adjust vm_start, vm_end, vm_pgoff fields of a vma that
* is already present in an i_mmap tree without adjusting the tree.
@@ -872,7 +865,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start,
* us to remove next before dropping the locks.
*/
if (remove_next != 3)
- __vma_unlink_prev(mm, next, vma);
+ __vma_unlink_common(mm, next, next);
else
/*
* vma is not before next if they've been