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-rw-r--r--include/crypto/block.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/crypto/block.h b/include/crypto/block.h
index cd18f46d56..e729d5bd66 100644
--- a/include/crypto/block.h
+++ b/include/crypto/block.h
@@ -75,6 +75,7 @@ typedef enum {
  * @readfunc: callback for reading data from the volume
  * @opaque: data to pass to @readfunc
  * @flags: bitmask of QCryptoBlockOpenFlags values
+ * @n_threads: allow concurrent I/O from up to @n_threads threads
  * @errp: pointer to a NULL-initialized error object
  *
  * Create a new block encryption object for an existing
@@ -107,6 +108,7 @@ QCryptoBlock *qcrypto_block_open(QCryptoBlockOpenOptions *options,
                                  QCryptoBlockReadFunc readfunc,
                                  void *opaque,
                                  unsigned int flags,
+                                 size_t n_threads,
                                  Error **errp);
 
 /**