btrfs: qgroup: use qgroup_iterator_nested to in qgroup_update_refcnt()

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The ulist @qgroups is utilized to record all involved qgroups from both
old and new roots inside btrfs_qgroup_account_extent().

Due to the fact that qgroup_update_refcnt() itself is already utilizing
qgroup_iterator, here we have to introduce another list_head,
btrfs_qgroup::nested_iterator, allowing nested iteration.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2023-09-02 08:13:57 +08:00 • committed by David Sterba

parent a4a81383fb

commit dce28769a3

2 changed files with 53 additions and 42 deletions

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77

fs/btrfs/qgroup.c

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18

fs/btrfs/qgroup.h

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