btrfs: add helper for recording simple quota deltas

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Rather than re-computing shared/exclusive ownership based on backrefs
and walking roots for implicit backrefs, simple quotas does an increment
when creating an extent and a decrement when deleting it. Add the API
for the extent item code to use to track those events.

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

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Boris Burkov 2023-03-28 13:43:47 -07:00 • committed by David Sterba

parent 6ed05643dd

commit 1e0e9d5771

2 changed files with 61 additions and 0 deletions

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46

fs/btrfs/qgroup.c

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15

fs/btrfs/qgroup.h

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