From 9047e3170a06f60a96a1d4a2f7762000657c7bbb Mon Sep 17 00:00:00 2001
From: Qu Wenruo <wqu@suse.com>
Date: Mon, 31 May 2021 16:50:43 +0800
Subject: [PATCH] btrfs: make end_bio_extent_writepage() to be subpage
 compatible

Now in end_bio_extent_writepage(), the only subpage incompatible code is
the end_page_writeback().

Just call the subpage helpers.

Tested-by: Ritesh Harjani <riteshh@linux.ibm.com> # [ppc64]
Tested-by: Anand Jain <anand.jain@oracle.com> # [aarch64]
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---
 fs/btrfs/extent_io.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 3ecd23c6b955..4220ef4ff7d0 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2853,7 +2853,8 @@ static void end_bio_extent_writepage(struct bio *bio)
 		}
 
 		end_extent_writepage(page, error, start, end);
-		end_page_writeback(page);
+
+		btrfs_page_clear_writeback(fs_info, page, start, bvec->bv_len);
 	}
 
 	bio_put(bio);