block: Switch transfer length bounds to byte-based

[mirror_qemu.git] / block / block-backend.c

diff --git a/block/block-backend.c b/block/block-backend.c
index 1fb070b4e4778f6406995e893283db2e3239d4f6..e0425440257b568fed0552715968b17143bfe3e8 100644 (file)
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -1303,16 +1303,16 @@ int blk_get_flags(BlockBackend *blk)
     }
 }
 
-/* Returns the maximum transfer length, in sectors; guaranteed nonzero */
-int blk_get_max_transfer_length(BlockBackend *blk)
+/* Returns the maximum transfer length, in bytes; guaranteed nonzero */
+uint32_t blk_get_max_transfer(BlockBackend *blk)
 {
     BlockDriverState *bs = blk_bs(blk);
-    int max = 0;
+    uint32_t max = 0;
 
     if (bs) {
-        max = bs->bl.max_transfer_length;
+        max = bs->bl.max_transfer;
     }
-    return MIN_NON_ZERO(max, BDRV_REQUEST_MAX_SECTORS);
+    return MIN_NON_ZERO(max, INT_MAX);
 }
 
 int blk_get_max_iov(BlockBackend *blk)