1 files changed, 10 insertions, 0 deletions
diff --git a/block/blk.h b/block/blk.h
index 7814aa207153..231fb77ef910 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -249,6 +249,16 @@ static inline unsigned int bio_allowed_max_sectors(struct request_queue *q)
 }
 
 /*
+ * The max size one bio can handle is UINT_MAX becasue bvec_iter.bi_size
+ * is defined as 'unsigned int', meantime it has to aligned to with logical
+ * block size which is the minimum accepted unit by hardware.
+ */
+static inline unsigned int bio_allowed_max_sectors(struct request_queue *q)
+{
+	return round_down(UINT_MAX, queue_logical_block_size(q)) >> 9;
+}
+
+/*
  * Internal io_context interface
  */
 void get_io_context(struct io_context *ioc);