# \[PATCH 02/17\] btrfs: use bio\_kmalloc in \_\_alloc\_device

- From: Christoph Hellwig \<hch@lst.de\>
- Date: 2021-01-26 15:03:29 
- List: linux-raid
- Page: https://ratatoskr.run/linux-raid/2021/01/198444
- Thread: https://ratatoskr.run/linux-f2fs-devel/2021/01/198441/t.md

```text
Use bio_kmalloc instead of open coding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/btrfs/volumes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 0a6de859eb2226..584ba093cf4966 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -421,7 +421,7 @@ static struct btrfs_device *__alloc_device(struct btrfs_fs_info *fs_info)
 	 * Preallocate a bio that's always going to be used for flushing device
 	 * barriers and matches the device lifespan
 	 */
-	dev->flush_bio = bio_alloc_bioset(GFP_KERNEL, 0, NULL);
+	dev->flush_bio = bio_kmalloc(GFP_KERNEL, 0);
 	if (!dev->flush_bio) {
 		kfree(dev);
 		return ERR_PTR(-ENOMEM);
-- 
2.29.2

```