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-rw-r--r--include/linux/bio.h23
1 files changed, 21 insertions, 2 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 52b9cbc3e4d..e54305cacc9 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;
}
/*