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-rw-r--r--mm/truncate.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/truncate.c b/mm/truncate.c
index 5b4c3a4847e..29a9b8a5a31 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -619,9 +619,9 @@ int vmtruncate_range(struct inode *inode, loff_t offset, loff_t end)
mutex_lock(&inode->i_mutex);
down_write(&inode->i_alloc_sem);
unmap_mapping_range(mapping, offset, (end - offset), 1);
- truncate_inode_pages_range(mapping, offset, end);
- unmap_mapping_range(mapping, offset, (end - offset), 1);
inode->i_op->truncate_range(inode, offset, end);
+ /* unmap again to remove racily COWed private pages */
+ unmap_mapping_range(mapping, offset, (end - offset), 1);
up_write(&inode->i_alloc_sem);
mutex_unlock(&inode->i_mutex);