btrfs: check squota parent usage on membership change

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We could have detected the quick inherit bug more directly if we had
an extra warning about squota hierarchy consistency while modifying the
hierarchy. In squotas, the parent usage always simply adds up to the sum of
its children, so we can just check for that when changing membership and
detect more accounting bugs.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Boris Burkov <boris@bur.io>
Signed-off-by: David Sterba <dsterba@suse.com>

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Boris Burkov 2025-12-01 15:33:49 -08:00 • committed by David Sterba

parent a5eb902436

commit 9c46bcda5f

1 changed files with 39 additions and 0 deletions

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fs/btrfs/qgroup.c

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