btrfs: update documentation for a block group's bg_list member

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Currently we are only documenting two uses of the bg_list member of a
block group, but there two more:

1) To track deleted block groups for discard purposes, introduced in
   commit e33e17ee10 ("btrfs: add missing discards when unpinning
   extents with -o discard");

2) To track block groups for automatic reclaim, introduced more recently
   by commit 18bb8bbf13 ("btrfs: zoned: automatically reclaim zones")

So document those two other use cases.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

...

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Filipe Manana 2023-06-06 15:26:03 +01:00 • committed by David Sterba

parent 7e27180994

commit aadb164bdd

1 changed files with 8 additions and 1 deletions

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fs/btrfs/block-group.h

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