[merged mm-stable] lib-test_hmm-fix-garbage-pfn-and-wrong-direction-in-devmem-fault-debug.patch removed from -mm tree

[merged mm-stable] lib-test_hmm-fix-garbage-pfn-and-wrong-direction-in-devmem-fault-debug.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: lib/test_hmm: fix garbage pfn and wrong direction in devmem fault debug
has been removed from the -mm tree.  Its filename was
     lib-test_hmm-fix-garbage-pfn-and-wrong-direction-in-devmem-fault-debug.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Qiang Liu <liuqiang@kylinos.cn>
Subject: lib/test_hmm: fix garbage pfn and wrong direction in devmem fault debug
Date: Wed, 12 Aug 2026 17:28:56 +0800

Move pr_debug() inside the `if (dpage)` block to avoid printing garbage
pfn for NULL dpage, and correct the direction label from "sys to dev" to
"dev to sys".

Link: https://lore.kernel.org/20260812092856.55296-1-liuqiangneo@163.com
Signed-off-by: Qiang Liu <liuqiang@kylinos.cn>
Assisted-by: Qoder:Qwen-3.8-MAX-Preview
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/test_hmm.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/lib/test_hmm.c~lib-test_hmm-fix-garbage-pfn-and-wrong-direction-in-devmem-fault-debug
+++ a/lib/test_hmm.c
@@ -1151,10 +1151,9 @@ static vm_fault_t dmirror_devmem_fault_a
 		if (!dpage && !order)
 			return VM_FAULT_OOM;
 
-		pr_debug("migrating from sys to dev pfn src: 0x%lx pfn dst: 0x%lx\n",
-				page_to_pfn(spage), page_to_pfn(dpage));
-
 		if (dpage) {
+			pr_debug("migrating from dev to sys pfn src: 0x%lx pfn dst: 0x%lx\n",
+					page_to_pfn(spage), page_to_pfn(dpage));
 			lock_page(dpage);
 			*dst |= migrate_pfn(page_to_pfn(dpage));
 		}
_

Patches currently in -mm which might be from liuqiang@kylinos.cn are