On 2024/3/27 03:12, Vishal Moola wrote:
On Mon, Mar 04, 2024 at 07:07:18PM +0800, Qi Zheng wrote:
The commit 32cc0b7c9d50 ("powerpc: add pte_free_defer() for pgtables
sharing page") introduced the use of PageActive flag to page table
fragments tracking, so the ptdesc->__page_flags is not unused, so
correct the wrong comment.
Thanks for catching this!
In regards to naming, we're trying to prefix unused variables with
__underscores so I'd prefer to see the __ eliminated from the
ptdesc->page_flags field here as well. This doesn't warrant a fix
as it is already in 6.9-rc1, but is something to keep in
mind for the future.
Got it.
Aside from that, LGTM.
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>
Thanks!
Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
---
include/linux/mm_types.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index a7223ba3ea1e..5ea77969daae 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -419,7 +419,7 @@ FOLIO_MATCH(compound_head, _head_2a);
/**
* struct ptdesc - Memory descriptor for page tables.
- * @__page_flags: Same as page flags. Unused for page tables.
+ * @__page_flags: Same as page flags. Powerpc only.
* @pt_rcu_head: For freeing page table pages.
* @pt_list: List of used page tables. Used for s390 and x86.
* @_pt_pad_1: Padding that aliases with page's compound head.
--
2.30.2
