[folded-merged] mm-extend-rmap-flags-arguments-for-folio_add_new_anon_rmap-fix-3.patch removed from -mm tree

[folded-merged] mm-extend-rmap-flags-arguments-for-folio_add_new_anon_rmap-fix-3.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm: enhence doc for extend rmap flags arguments for folio_add_new_anon_rmap
has been removed from the -mm tree.  Its filename was
     mm-extend-rmap-flags-arguments-for-folio_add_new_anon_rmap-fix-3.patch

This patch was dropped because it was folded into mm-extend-rmap-flags-arguments-for-folio_add_new_anon_rmap.patch

------------------------------------------------------
From: Barry Song <v-songbaohua@oppo.com>
Subject: mm: enhence doc for extend rmap flags arguments for folio_add_new_anon_rmap
Date: Sat, 22 Jun 2024 14:51:38 +1200

Link: https://lkml.kernel.org/r/20240622030256.43775-1-21cnbao@gmail.com
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Suggested-by: David Hildenbrand <david@redhat.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: kernel test robot <lkp@intel.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuai Yuan <yuanshuai@oppo.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Yosry Ahmed <yosryahmed@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/rmap.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/mm/rmap.c~mm-extend-rmap-flags-arguments-for-folio_add_new_anon_rmap-fix-3
+++ a/mm/rmap.c
@@ -1405,7 +1405,9 @@ void folio_add_anon_rmap_pmd(struct foli
  *
  * Like folio_add_anon_rmap_*() but must only be called on *new* folios.
  * This means the inc-and-test can be bypassed.
- * The folio does not have to be locked.
+ * The folio doesn't necessarily need to be locked while it's exclusive
+ * unless two threads map it concurrently. However, the folio must be
+ * locked if it's shared.
  *
  * If the folio is pmd-mappable, it is accounted as a THP.
  */
@@ -1417,6 +1419,7 @@ void folio_add_new_anon_rmap(struct foli
 	int nr_pmdmapped = 0;
 
 	VM_WARN_ON_FOLIO(folio_test_hugetlb(folio), folio);
+	VM_WARN_ON_FOLIO(!exclusive && !folio_test_locked(folio), folio);
 	VM_BUG_ON_VMA(address < vma->vm_start ||
 			address + (nr << PAGE_SHIFT) > vma->vm_end, vma);
 	__folio_set_swapbacked(folio);
_

Patches currently in -mm which might be from v-songbaohua@oppo.com are

mm-extend-rmap-flags-arguments-for-folio_add_new_anon_rmap.patch
mm-use-folio_add_new_anon_rmap-if-folio_test_anonfolio==false.patch
mm-use-folio_add_new_anon_rmap-if-folio_test_anonfolio==false-fix-2.patch
mm-remove-folio_test_anonfolio==false-path-in-__folio_add_anon_rmap.patch
tools-mm-introduce-a-tool-to-assess-swap-entry-allocation-for-thp_swapout.patch