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

From: Stephen Rothwell <[email-masked]>
Date: Mon, 6 May 2019 15:07:07 +1000

Hi Jens,

After merging the block tree, today's linux-next build (x86_64
allmodconfig) failed like this:

fs/gfs2/lops.c: In function 'gfs2_end_log_read':
fs/gfs2/lops.c:394:49: error: macro "bio_for_each_segment_all" passed 4 arguments, but takes just 3
  bio_for_each_segment_all(bvec, bio, i, iter_all) {
                                                 ^
fs/gfs2/lops.c:394:2: error: 'bio_for_each_segment_all' undeclared (first use in this function); did you mean 'bio_first_page_all'?
  bio_for_each_segment_all(bvec, bio, i, iter_all) {
  ^~~~~~~~~~~~~~~~~~~~~~~~
  bio_first_page_all
fs/gfs2/lops.c:394:2: note: each undeclared identifier is reported only once for each function it appears in
fs/gfs2/lops.c:394:26: error: expected ';' before '{' token
  bio_for_each_segment_all(bvec, bio, i, iter_all) {
                          ^                        ~
                          ;

Caused by commit

  2b070cfe582b ("block: remove the i argument to bio_for_each_segment_all")

interacting with commit

  e21e191994af ("gfs2: read journal in large chunks")

from the gfs2 tree.

I have applied the following patch for today:

From: Stephen Rothwell <[email-masked]>
Date: Mon, 6 May 2019 14:57:42 +1000
Subject: [PATCH] gfs2: fix for "block: remove the i argument to bio_for_each_segment_all"

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 fs/gfs2/lops.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index 3b3dd2ef53f7..33ab662c9aac 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -388,10 +388,9 @@ static void gfs2_end_log_read(struct bio *bio)
 {
 	struct page *page;
 	struct bio_vec *bvec;
-	int i;
 	struct bvec_iter_all iter_all;
 
-	bio_for_each_segment_all(bvec, bio, i, iter_all) {
+	bio_for_each_segment_all(bvec, bio, iter_all) {
 		page = bvec->bv_page;
 		if (bio->bi_status) {
 			int err = blk_status_to_errno(bio->bi_status);
-- 
2.20.1

-- 
Cheers,
Stephen Rothwell