perf lock contention: Track and show mmap_lock with address

[platform/kernel/linux-starfive.git] / block / blk-merge.c

diff --git a/block/blk-merge.c b/block/blk-merge.c
index ff72edd..6460abd 100644 (file)
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -276,7 +276,7 @@ static bool bvec_split_segs(const struct queue_limits *lim,
  * responsible for ensuring that @bs is only destroyed after processing of the
  * split bio has finished.
  */
-static struct bio *bio_split_rw(struct bio *bio, const struct queue_limits *lim,
+struct bio *bio_split_rw(struct bio *bio, const struct queue_limits *lim,
                unsigned *segs, struct bio_set *bs, unsigned max_bytes)
 {
        struct bio_vec bv, bvprv, *bvprvp = NULL;
@@ -336,6 +336,7 @@ split:
        bio_clear_polled(bio);
        return bio_split(bio, bytes >> SECTOR_SHIFT, GFP_NOIO, bs);
 }
+EXPORT_SYMBOL_GPL(bio_split_rw);
 
 /**
  * __bio_split_to_limits - split a bio to fit the queue limits