drbd: introduce a bio_set to allocate housekeeping bios from

Don't rely on availability of bios from the global fs_bio_set,
we should use our own bio_set for meta data IO.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index a24eb787a7a1..b5c5ff53cb57 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -953,8 +953,7 @@ static void bm_async_io_complete(struct bio *bio, int error)
 
 static void bm_page_io_async(struct bm_aio_ctx *ctx, int page_nr, int rw) __must_hold(local)
 {
-        /* we are process context. we always get a bio */
-        struct bio *bio = bio_alloc(GFP_NOIO, 1);
+        struct bio *bio = bio_alloc_drbd(GFP_NOIO);
         struct drbd_conf *mdev = ctx->mdev;
         struct drbd_bitmap *b = mdev->bitmap;
         struct page *page;