Subject: linux-next: build failure after merge of the md tree

From: Stephen Rothwell <[email-masked]>
Date: Thu, 22 Jun 2017 11:44:56 +1000

Hi Shaohua,

After merging the md tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

drivers/md/md.c: In function 'md_run':
drivers/md/md.c:5449:21: error: too few arguments to function 'bioset_create'
   mddev->sync_set = bioset_create(BIO_POOL_SIZE, 0);
                     ^
In file included from include/linux/blkdev.h:20:0,
                 from drivers/md/md.c:49:
include/linux/bio.h:375:24: note: declared here
 extern struct bio_set *bioset_create(unsigned int, unsigned int, int flags);
                        ^

Caused by commit

  5a85071c2cbc ("md: use a separate bio_set for synchronous IO.")

interacting with commit

  011067b05668 ("blk: replace bioset_create_nobvec() with a flags arg to bioset_create()")

from the block tree.

I applied the following merge fix patch:

From: Stephen Rothwell <[email-masked]>
Date: Thu, 22 Jun 2017 11:42:02 +1000
Subject: [PATCH] md: fix up for "blk: replace bioset_create_nobvec() with a
 flags arg to bioset_create()"

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 drivers/md/md.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index c5d9cac4760c..ffccee45af8c 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5446,7 +5446,7 @@ int md_run(struct mddev *mddev)
 			return -ENOMEM;
 	}
 	if (mddev->sync_set == NULL) {
-		mddev->sync_set = bioset_create(BIO_POOL_SIZE, 0);
+		mddev->sync_set = bioset_create(BIO_POOL_SIZE, 0, BIOSET_NEED_BVECS);
 		if (!mddev->sync_set)
 			return -ENOMEM;
 	}
-- 
2.11.0

-- 
Cheers,
Stephen Rothwell