dax: Fix sleep in atomic contex in grab_mapping_entry()

[karo-tx-linux.git] / block / bio.c

diff --git a/block/bio.c b/block/bio.c
index aa7354088008ba5f73d3ba1af83eb902b0629ec6..db85c5753a7656560200427d8f47ebb0eecb9458 100644 (file)
--- a/block/bio.c
+++ b/block/bio.c
@@ -1068,7 +1068,7 @@ static int bio_copy_to_iter(struct bio *bio, struct iov_iter iter)
        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 @@ static void bio_free_pages(struct bio *bio)
        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
@@ -1274,7 +1275,7 @@ struct bio *bio_map_user_iov(struct request_queue *q,
 
                nr_pages += end - start;
                /*
-                * buffer must be aligned to at least hardsector size for now
+                * buffer must be aligned to at least logical block size for now
                 */
                if (uaddr & queue_dma_alignment(q))
                        return ERR_PTR(-EINVAL);