1 files changed, 5 insertions, 0 deletions

diff --git a/fs/read_write.c b/fs/read_write.c
index 0f0a6efdd502..f5395d8da741 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -2009,6 +2009,11 @@ int vfs_dedupe_file_range_one(struct file *src_file, loff_t src_pos,
         if (!dst_file->f_op->dedupe_file_range)
                 goto out_drop_write;
 
+        if (len == 0) {
+                ret = 0;
+                goto out_drop_write;
+        }
+
         ret = dst_file->f_op->dedupe_file_range(src_file, src_pos,
                                                 dst_file, dst_pos, len);
 out_drop_write: