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-rw-r--r--include/block/block_int.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/block/block_int.h b/include/block/block_int.h
index ec0797ebc7..8b132d7178 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -247,6 +247,9 @@ typedef struct BlockLimits {
 
     /* optimal alignment for write zeroes requests in sectors */
     int64_t write_zeroes_alignment;
+
+    /* optimal transfer length in sectors */
+    int opt_transfer_length;
 } BlockLimits;
 
 /*