Remove the static definition of bio_attempt_back_merge() to allow using
this function internally from other block layer files. Add the
definition of enum bio_merge_status and the declaration of
bio_attempt_back_merge() to block/blk.h.
Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
---
block/blk-merge.c | 8 +-------
block/blk.h | 8 ++++++++
2 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 2d470cf2173e..a1ef61b03e31 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -964,13 +964,7 @@ static void blk_account_io_merge_bio(struct request *req)
part_stat_unlock();
}
-enum bio_merge_status {
- BIO_MERGE_OK,
- BIO_MERGE_NONE,
- BIO_MERGE_FAILED,
-};
-
-static enum bio_merge_status bio_attempt_back_merge(struct request *req,
+enum bio_merge_status bio_attempt_back_merge(struct request *req,
struct bio *bio, unsigned int nr_segs)
{
const blk_opf_t ff = bio_failfast(bio);
diff --git a/block/blk.h b/block/blk.h
index 23f76b452e70..5180e103ed9c 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -256,6 +256,14 @@ static inline void bio_integrity_free(struct bio *bio)
unsigned long blk_rq_timeout(unsigned long timeout);
void blk_add_timer(struct request *req);
+enum bio_merge_status {
+ BIO_MERGE_OK,
+ BIO_MERGE_NONE,
+ BIO_MERGE_FAILED,
+};
+
+enum bio_merge_status bio_attempt_back_merge(struct request *req,
+ struct bio *bio, unsigned int nr_segs);
bool blk_attempt_plug_merge(struct request_queue *q, struct bio *bio,
unsigned int nr_segs);
bool blk_bio_list_merge(struct request_queue *q, struct list_head *list,
--
2.43.0
