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-rw-r--r--include/linux/bio.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 810a8bee8f85..397a38aca182 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -127,6 +127,11 @@ static inline void *bio_data(struct bio *bio)
return NULL;
}
+static inline bool bio_full(struct bio *bio)
+{
+ return bio->bi_vcnt >= bio->bi_max_vecs;
+}
+
/*
* will die
*/
@@ -474,6 +479,10 @@ void bio_chain(struct bio *, struct bio *);
extern int bio_add_page(struct bio *, struct page *, unsigned int,unsigned int);
extern int bio_add_pc_page(struct request_queue *, struct bio *, struct page *,
unsigned int, unsigned int);
+bool __bio_try_merge_page(struct bio *bio, struct page *page,
+ unsigned int len, unsigned int off);
+void __bio_add_page(struct bio *bio, struct page *page,
+ unsigned int len, unsigned int off);
int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter);
struct rq_map_data;
extern struct bio *bio_map_user_iov(struct request_queue *,