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-rw-r--r--mm/memory.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c
index f09cdb8d48fa..06f552504e79 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2453,8 +2453,6 @@ void unmap_mapping_range(struct address_space *mapping,
if (details.last_index < details.first_index)
details.last_index = ULONG_MAX;
-
- /* DAX uses i_mmap_lock to serialise file truncate vs page fault */
i_mmap_lock_write(mapping);
if (unlikely(!RB_EMPTY_ROOT(&mapping->i_mmap)))
unmap_mapping_range_tree(&mapping->i_mmap, &details);