mm/rmap: rename page__anon_vma to anon_vma for consistency

Patch series "mm: minor cleanups in rmap", v3.

Minor cleanups in mm/rmap.c:

- Rename a local variable for consistency
- Fix a typo in a comment

No functional changes.

This patch (of 2):

Rename local variable page__anon_vma in page_address_in_vma() to anon_vma.
The previous naming convention of using double underscores (__) is
unnecessary and inconsistent with typical kernel style, which uses single
underscores to denote local variables.  Also updated comments to reflect
the new variable name.

Functionality unchanged.

Link: https://lkml.kernel.org/r/20250421085729.127845-1-ye.liu@linux.dev
Link: https://lkml.kernel.org/r/20250421085729.127845-2-ye.liu@linux.dev
Signed-off-by: Ye Liu <liuye@kylinos.cn>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Liu Ye <liuye@kylinos.cn>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/rmap.c b/mm/rmap.c
index 4992005885eff67242ad8fd08264bb5b90dcc50c..11f3c0fc769f153350ad653a584c310cf0a81be4 100644 (file)
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -789,13 +789,13 @@ unsigned long page_address_in_vma(const struct folio *folio,
                const struct page *page, const struct vm_area_struct *vma)
 {
        if (folio_test_anon(folio)) {
-               struct anon_vma *page__anon_vma = folio_anon_vma(folio);
+               struct anon_vma *anon_vma = folio_anon_vma(folio);
                /*
                 * Note: swapoff's unuse_vma() is more efficient with this
                 * check, and needs it to match anon_vma when KSM is active.
                 */
-               if (!vma->anon_vma || !page__anon_vma ||
-                   vma->anon_vma->root != page__anon_vma->root)
+               if (!vma->anon_vma || !anon_vma ||
+                   vma->anon_vma->root != anon_vma->root)
                        return -EFAULT;
        } else if (!vma->vm_file) {
                return -EFAULT;
@@ -803,7 +803,7 @@ unsigned long page_address_in_vma(const struct folio *folio,
                return -EFAULT;
        }
 
-       /* KSM folios don't reach here because of the !page__anon_vma check */
+       /* KSM folios don't reach here because of the !anon_vma check */
        return vma_address(vma, page_pgoff(folio, page), 1);
 }