btrfs: destroy qgroup extent records on transaction abort

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commit 81f7eb00ff upstream.

We clean up the delayed references when we abort a transaction but we
leave the pending qgroup extent records behind, leaking memory.

This patch destroys the extent records when we destroy the delayed refs
and makes sure ensure they're gone before releasing the transaction.

Fixes: 3368d001ba ("btrfs: qgroup: Record possible quota-related extent for qgroup.")
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
[ Rebased to latest upstream, remove to_qgroup() helper, use
  rbtree_postorder_for_each_entry_safe() wrapper ]
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Jeff Mahoney 2020-02-11 15:25:37 +08:00 • committed by Greg Kroah-Hartman

parent f5122114c1

commit 4e2e49d421

4 changed files with 17 additions and 0 deletions

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1

fs/btrfs/disk-io.c

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13

fs/btrfs/qgroup.c

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1

fs/btrfs/qgroup.h

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2

fs/btrfs/transaction.c

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