f2fs: fix to account IO correctly for cgroup writeback

Now, we have supported cgroup writeback, it depends on correctly IO
account of specified filesystem.

But in commit d1b3e72d5490 ("f2fs: submit bio of in-place-update pages"),
we split write paths from f2fs_submit_page_mbio() to two:
- f2fs_submit_page_bio() for IPU path
- f2fs_submit_page_bio() for OPU path

But still we account write IO only in f2fs_submit_page_mbio(), result in
incorrect IO account, fix it by adding missing IO account in IPU path.

Fixes: d1b3e72d5490 ("f2fs: submit bio of in-place-update pages")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 83b1983094bd9e9f7221f5fac96d56d25ca7663b..4b312b73d8a89ef59ba8bd223d26f6e447a12141 100644 (file)
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -460,6 +460,10 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
                bio_put(bio);
                return -EFAULT;
        }
+
+       if (fio->io_wbc && !is_read_io(fio->op))
+               wbc_account_io(fio->io_wbc, page, PAGE_SIZE);
+
        bio_set_op_attrs(bio, fio->op, fio->op_flags);
 
        if (!is_read_io(fio->op))