btrfs: document some invariants of seed code

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Without good understanding of how seed devices works it's hard to grok
some of what the code in open_seed_devices or btrfs_prepare_sprout does.

Add comments hopefully reducing some of the cognitive load.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Nikolay Borisov 2020-08-12 17:04:36 +03:00 • committed by David Sterba

parent 944d3f9fac

commit 427c8fddb1

1 changed files with 15 additions and 0 deletions

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fs/btrfs/volumes.c

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