diff options
Diffstat (limited to 'mm/mremap.c')
| -rw-r--r-- | mm/mremap.c | 20 |
1 files changed, 4 insertions, 16 deletions
diff --git a/mm/mremap.c b/mm/mremap.c index 1ddf7beb62e9..0eaa11c845b9 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -1040,23 +1040,11 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len, * vma (expand operation itself) and possibly also with * the next vma if it becomes adjacent to the expanded * vma and otherwise compatible. - * - * However, vma_merge() can currently fail due to - * is_mergeable_vma() check for vm_ops->close (see the - * comment there). Yet this should not prevent vma - * expanding, so perform a simple expand for such vma. - * Ideally the check for close op should be only done - * when a vma would be actually removed due to a merge. */ - if (!vma->vm_ops || !vma->vm_ops->close) { - vma = vma_merge(&vmi, mm, vma, extension_start, - extension_end, vma->vm_flags, vma->anon_vma, - vma->vm_file, extension_pgoff, vma_policy(vma), - vma->vm_userfaultfd_ctx, anon_vma_name(vma)); - } else if (vma_expand(&vmi, vma, vma->vm_start, - addr + new_len, vma->vm_pgoff, NULL)) { - vma = NULL; - } + vma = vma_merge(&vmi, mm, vma, extension_start, + extension_end, vma->vm_flags, vma->anon_vma, + vma->vm_file, extension_pgoff, vma_policy(vma), + vma->vm_userfaultfd_ctx, anon_vma_name(vma)); if (!vma) { vm_unacct_memory(pages); ret = -ENOMEM; |