In the meantime, since I have sent the base patch as below [1], the
block layer commit 0d02129e76ed (block: merge struct block_device and
struct hd_struct) has changed the first argument in the function
part_stat_read_all() to struct block_device in 5.11-rc1. So the
compilation will fail. This patch fixes it.

This fixup patch must be rolled into its base patch [1].
[1] [PATCH v2 1/4] btrfs: add read_policy latency

I will include these changes in the base patch after the review comments.

Signed-off-by: Anand Jain <redacted>
---
 fs/btrfs/volumes.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 381eed52708e..7fc56274f3c1 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c

@@ -5550,8 +5550,8 @@ static int btrfs_find_best_stripe(struct btrfs_fs_info *fs_info,
 		unsigned long read_ios;
 		struct btrfs_device *device = map->stripes[index].dev;
 
-		read_wait = part_stat_read(device->bdev->bd_part, nsecs[READ]);
-		read_ios = part_stat_read(device->bdev->bd_part, ios[READ]);
+		read_wait = part_stat_read(device->bdev, nsecs[READ]);
+		read_ios = part_stat_read(device->bdev, ios[READ]);
 
 		if (read_wait && read_ios && read_wait >= read_ios)
 			avg_wait = div_u64(read_wait, read_ios);

-- 
2.25.1