1 files changed, 21 insertions, 2 deletions

diff --git a/include/linux/bio.h b/include/linux/bio.h
index 52b9cbc3e4da..e54305cacc98 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -386,9 +386,28 @@ static inline char *__bio_kmap_irq(struct bio *bio, unsigned short idx,
 /*
  * Check whether this bio carries any data or not. A NULL bio is allowed.
  */
-static inline int bio_has_data(struct bio *bio)
+static inline bool bio_has_data(struct bio *bio)
 {
-        return bio && bio->bi_io_vec != NULL;
+        if (bio && bio->bi_vcnt)
+                return true;
+
+        return false;
+}
+
+static inline bool bio_is_rw(struct bio *bio)
+{
+        if (!bio_has_data(bio))
+                return false;
+
+        return true;
+}
+
+static inline bool bio_mergeable(struct bio *bio)
+{
+        if (bio->bi_rw & REQ_NOMERGE_FLAGS)
+                return false;
+
+        return true;
 }
 
 /*