btrfs: Remove not_found_em label from btrfs_get_extent
In order to avoid duplicating init code for em there is an additional label, not_found_em, which is used to only set ->block_start. The only case when it will be used is if the extent we are adding overlaps with an existing extent. Make that case more obvious by: 1. Adding a comment hinting at what's going on 2. Assigning EXTENT_MAP_HOLE and directly going to insert. No functional changes. Reviewed-by:Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
Nikolay Borisov <nborisov@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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