Commit 5e549e98 authored by Andrea Arcangeli's avatar Andrea Arcangeli Committed by Linus Torvalds

mmap: remove unnecessary lock from __vma_link

There's no anon-vma related mangling happening inside __vma_link anymore
so no need of anon_vma locking there.
Signed-off-by: default avatarAndrea Arcangeli <aarcange@redhat.com>
Signed-off-by: default avatarRik van Riel <riel@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ff36b801
...@@ -452,12 +452,10 @@ static void vma_link(struct mm_struct *mm, struct vm_area_struct *vma, ...@@ -452,12 +452,10 @@ static void vma_link(struct mm_struct *mm, struct vm_area_struct *vma,
spin_lock(&mapping->i_mmap_lock); spin_lock(&mapping->i_mmap_lock);
vma->vm_truncate_count = mapping->truncate_count; vma->vm_truncate_count = mapping->truncate_count;
} }
vma_lock_anon_vma(vma);
__vma_link(mm, vma, prev, rb_link, rb_parent); __vma_link(mm, vma, prev, rb_link, rb_parent);
__vma_link_file(vma); __vma_link_file(vma);
vma_unlock_anon_vma(vma);
if (mapping) if (mapping)
spin_unlock(&mapping->i_mmap_lock); spin_unlock(&mapping->i_mmap_lock);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment