[PATCH 0/2] btrfs: merge the two different super block read functions into one

[Qu Wenruo <wqu@suse.com>]

We have two functions to read a super block from a block device:

- btrfs_read_dev_one_super()
  Exported from disk-io.c

- btrfs_read_disk_super()
  Local to volumes.c

Which are doing mostly the same thing, so the first patch merge them
into btrfs_read_disk_super().

The second patch removes the btrfs_read_dev_super() function, as it
never really implement the full super blocks scan, and can be replaced
by a btrfs_read_disk_super() call reading the primary super block.

This not only reduce the duplication, but also removes the confusion
between all the similiarly named functions.

Qu Wenruo (2):
  btrfs: merge btrfs_read_dev_one_super() into btrfs_read_disk_super()
  btrfs: get rid of btrfs_read_dev_super()

 fs/btrfs/disk-io.c | 81 +-----------------------------------------
 fs/btrfs/disk-io.h |  3 --
 fs/btrfs/super.c   |  2 +-
 fs/btrfs/volumes.c | 88 +++++++++++++++++++++++-----------------------
 fs/btrfs/volumes.h |  2 ++
 5 files changed, 48 insertions(+), 128 deletions(-)

-- 
2.49.0