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authorWei Yang <richardw.yang@linux.intel.com>2019-11-30 17:50:37 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-12-01 06:29:18 -0800
commit408a60eddd206134fd306dfbc53bbde093b8deb0 (patch)
tree9eada5a1b30300eda5723a7dc7a40e246bee4f36 /mm/mmap.c
parente4dcad204d3a281be6f8573e0a82648a4ad84e69 (diff)
downloadlinux-408a60eddd206134fd306dfbc53bbde093b8deb0.tar.bz2
mm/mmap.c: remove a never-triggered warning in __vma_adjust()
The upper level of "if" makes sure (end >= next->vm_end), which means there are only two possibilities: 1) end == next->vm_end 2) end > next->vm_end remove_next is assigned to be (1 + end > next->vm_end). This means if remove_next is 1, end must equal to next->vm_end. The VM_WARN_ON will never trigger. Link: http://lkml.kernel.org/r/20190912063126.13250-1-richardw.yang@linux.intel.com Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <yang.shi@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mmap.c')
-rw-r--r--mm/mmap.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index a7d8c84d19b7..e27bc5dcd6c4 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -769,8 +769,6 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start,
remove_next = 1 + (end > next->vm_end);
VM_WARN_ON(remove_next == 2 &&
end != next->vm_next->vm_end);
- VM_WARN_ON(remove_next == 1 &&
- end != next->vm_end);
/* trim end to next, for case 6 first pass */
end = next->vm_end;
}