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mm/mmap.c: __vma_unlink_prev() is not necessary now

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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>

Cc: Christoph Hellwig <hch@infradead.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
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>
This commit is contained in:
Wei Yang 2019-11-30 17:50:46 -08:00 committed by Linus Torvalds
parent 93b343ab2d
commit 9d81fbe09a
1 changed files with 1 additions and 8 deletions
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9
mm/mmap.c
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@ -702,13 +702,6 @@ 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.
@ -881,7 +874,7 @@ 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