block: export bio_free_pages to other modules
bio_free_pages is introduced in commit 1dfa0f68c040
("block: add a helper to free bio bounce buffer pages"),
we can reuse the func in other modules after it was
imported.
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Jens Axboe <axboe@fb.com>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Shaohua Li <shli@fb.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Acked-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/bio.c b/block/bio.c
index a6d279e..db85c57 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1068,7 +1068,7 @@
return 0;
}
-static void bio_free_pages(struct bio *bio)
+void bio_free_pages(struct bio *bio)
{
struct bio_vec *bvec;
int i;
@@ -1076,6 +1076,7 @@
bio_for_each_segment_all(bvec, bio, i)
__free_page(bvec->bv_page);
}
+EXPORT_SYMBOL(bio_free_pages);
/**
* bio_uncopy_user - finish previously mapped bio