is_mergeable_anon_vma  701 mm/mmap.c      	    is_mergeable_anon_vma(anon_vma, vma->anon_vma)) {
is_mergeable_anon_vma  720 mm/mmap.c      	    is_mergeable_anon_vma(anon_vma, vma->anon_vma)) {
is_mergeable_anon_vma  796 mm/mmap.c      				is_mergeable_anon_vma(prev->anon_vma,