[merged mm-stable] fs-proc-task_mmu-do-not-warn-on-seeing-non-migration-pmd-entry.patch removed from -mm tree

[merged mm-stable] fs-proc-task_mmu-do-not-warn-on-seeing-non-migration-pmd-entry.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: fs/proc/task_mmu: do not warn on seeing non-migration pmd entry
has been removed from the -mm tree.  Its filename was
     fs-proc-task_mmu-do-not-warn-on-seeing-non-migration-pmd-entry.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: Dev Jain <dev.jain@arm.com>
Subject: fs/proc/task_mmu: do not warn on seeing non-migration pmd entry
Date: Thu, 4 Jun 2026 05:53:05 +0000

Patch series "mm/hmm: A fix and a selftest", v3.

Patch 1 fixes a stale warning present from the time when only migration
softleaf entries were supported at the PMD level.

Patch 2 adds some code into hmm-tests.c which exercises the pagemap path
for PMD device-private entries.


This patch (of 2):

pagemap_pmd_range_thp() warns if a non-present PMD is not a migration
entry.  This became false once device-private entries at the PMD level
were added.

Therefore, remove the stale migration-only assertion.

Link: https://lore.kernel.org/20260604055308.1947679-1-dev.jain@arm.com
Link: https://lore.kernel.org/20260604055308.1947679-2-dev.jain@arm.com
Fixes: a30b48bf1b24 ("mm/migrate_device: implement THP migration of zone device pages")
Signed-off-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Balbir Singh <balbirs@nvidia.com>
Reviewed-by: Lorenzo Stoakes <ljs@kernel.org>
Tested-by: Lorenzo Stoakes <ljs@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Oscar Salvador (SUSE) <osalvador@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/proc/task_mmu.c |    1 -
 1 file changed, 1 deletion(-)

--- a/fs/proc/task_mmu.c~fs-proc-task_mmu-do-not-warn-on-seeing-non-migration-pmd-entry
+++ a/fs/proc/task_mmu.c
@@ -2129,7 +2129,6 @@ static int pagemap_pmd_range_thp(pmd_t *
 			flags |= PM_SOFT_DIRTY;
 		if (pmd_swp_uffd_wp(pmd))
 			flags |= PM_UFFD_WP;
-		VM_WARN_ON_ONCE(!pmd_is_migration_entry(pmd));
 		page = softleaf_to_page(entry);
 	}
 
_

Patches currently in -mm which might be from dev.jain@arm.com are

mm-khugepaged-generalize-alloc_charge_folio.patch