[PATCH v3 0/2] small cleanups for find_first_block_group

From: Johannes Thumshirn <johannes.thumshirn@wdc.com>
To: David Sterba <dsterba@suse.cz>
Cc: Nikolay Borisov <nborisov@suse.com>,
	linux-btrfs@vger.kernel.org,
	Johannes Thumshirn <johannes.thumshirn@wdc.com>
Subject: [PATCH v3 0/2] small cleanups for find_first_block_group
Date: Tue,  2 Jun 2020 19:05:55 +0900	[thread overview]
Message-ID: <20200602100557.6938-1-johannes.thumshirn@wdc.com> (raw)

While trying to learn the Block Group code I've found some cleanup
possibilities for find_first_block_group().

Here's a proposal to make $ffbg a bit more easier to read by untangling the
gotos and if statements.

The patch set is based on misc-next from May 26 morning with 
HEAD 3f4a266717ed ("btrfs: split btrfs_direct_IO to read and write part")
and xfstests showed no regressions to the base misc-next in my test setup.

Changes to v2:
- Dropped label removal patch (David)
- Don't return early inside the loop (David)

Changes to v1:
- Pass btrfs_path instead of leaf & slot to read_bg_from_eb (Nikolay)
- Don't comment about the size change (Nikolay)
- Add Nikolay's Reviewed-by's

Johannes Thumshirn (2):
  btrfs: get mapping tree directly from fsinfo in find_first_block_group
  btrfs: factor out reading of bg from find_frist_block_group

 fs/btrfs/block-group.c | 102 ++++++++++++++++++++++-------------------
 1 file changed, 56 insertions(+), 46 deletions(-)

-- 
2.26.2