* [PATCH] mm/migrate: fix pmd_migration_entry_wait() (merge issue in linux-next)
@ 2021-12-16 8:38 Dan Carpenter
0 siblings, 0 replies; only message in thread
From: Dan Carpenter @ 2021-12-16 8:38 UTC (permalink / raw)
To: Mark Brown; +Cc: linux-mm, Matthew Wilcox
The "ptl = pmd_lock(mm, pmd);" line was accidentally deleted in the
linux-next merge for next-20211214.
Fixes: fd93c9fe58cc ("Merge branch 'akpm-current/current'")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
mm/migrate.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/migrate.c b/mm/migrate.c
index 8d93dfb0b9e1..c9296d63878d 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -339,6 +339,8 @@ void pmd_migration_entry_wait(struct mm_struct *mm, pmd_t *pmd)
{
spinlock_t *ptl;
struct folio *folio;
+
+ ptl = pmd_lock(mm, pmd);
if (!is_pmd_migration_entry(*pmd))
goto unlock;
folio = page_folio(pfn_swap_entry_to_page(pmd_to_swp_entry(*pmd)));
--
2.20.1
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2021-12-16 8:38 [PATCH] mm/migrate: fix pmd_migration_entry_wait() (merge issue in linux-next) Dan Carpenter
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