diff options
| author |   Wei Yang <richardw.yang@linux.intel.com> | 2019-11-30 17:50:49 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-01 06:29:19 -0800 |
| commit | 1b9fc5b24fa2e7c0e67778cda77ac231fb4bcac7 (patch) | |
| tree | ddcb87f3df18fa01954181743c3cd2be7e8c0e42 /mm/util.c | |
| parent | mm/mmap.c: __vma_unlink_prev() is not necessary now (diff) | |
| download | linux-dev-1b9fc5b24fa2e7c0e67778cda77ac231fb4bcac7.tar.xz linux-dev-1b9fc5b24fa2e7c0e67778cda77ac231fb4bcac7.zip | |
mm/mmap.c: extract __vma_unlink_list() as counterpart for __vma_link_list()
Just make the code a little easier to read.
Link: http://lkml.kernel.org/r/20191006012636.31521-3-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>
Diffstat (limited to 'mm/util.c')
| -rw-r--r-- | mm/util.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/mm/util.c b/mm/util.c index 3ad6db9a722e..7fbaadb7fb1f 100644 --- a/mm/util.c +++ b/mm/util.c @@ -292,6 +292,20 @@ void __vma_link_list(struct mm_struct *mm, struct vm_area_struct *vma, next->vm_prev = vma; } +void __vma_unlink_list(struct mm_struct *mm, struct vm_area_struct *vma) +{ + struct vm_area_struct *prev, *next; + + next = vma->vm_next; + prev = vma->vm_prev; + if (prev) + prev->vm_next = next; + else + mm->mmap = next; + if (next) + next->vm_prev = prev; +} + /* Check if the vma is being used as a stack by this task */ int vma_is_stack_for_current(struct vm_area_struct *vma) { |