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Subjectlinux-next: build failure after merge of the block tree
Hi all,

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

fs/f2fs/data.c: In function 'f2fs_merge_page_bio':
fs/f2fs/data.c:516:3: error: implicit declaration of function 'wbc_account_io'; did you mean 'blk_account_rq'? [-Werror=implicit-function-declaration]
wbc_account_io(fio->io_wbc, page, PAGE_SIZE);

Caused by commit

34e51a5e1a6e ("blkcg, writeback: Rename wbc_account_io() to wbc_account_cgroup_owner()")

interacting with commit

8648de2c581e ("f2fs: add bio cache for IPU")

from the f2fs tree.

I added the following merge fix patch or today:

From: Stephen Rothwell <>
Date: Thu, 11 Jul 2019 15:13:21 +1000
Subject: [PATCH] f2fs: fix for wbc_account_io rename

Signed-off-by: Stephen Rothwell <>
fs/f2fs/data.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 323306630f93..4eb2f3920140 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -513,7 +513,7 @@ int f2fs_merge_page_bio(struct f2fs_io_info *fio)

if (fio->io_wbc)
- wbc_account_io(fio->io_wbc, page, PAGE_SIZE);
+ wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE);

inc_page_count(fio->sbi, WB_DATA_TYPE(page));

Stephen Rothwell
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