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btrfs: qgroup: Fix a rebase bug which will cause qgroup double free 

When rebasing my patchset, I forgot to pick up a cleanup patch to remove
old hotfix in 4.2 release.

Witouth the cleanup, it will screw up new qgroup reserve framework and
always cause minus reserved number.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Qu Wenruo 2015-10-26 14:11:19 +08:00 committed by Chris Mason
parent 5846a3c268
commit 90ce321da8
1 changed files with 0 additions and 4 deletions
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4
fs/btrfs/qgroup.c
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@ -1652,10 +1652,6 @@ static int qgroup_update_counters(struct btrfs_fs_info *fs_info,
}
}
/* For exclusive extent, free its reserved bytes too */
if (nr_old_roots == 0 && nr_new_roots == 1 &&
cur_new_count == nr_new_roots)
qg->reserved -= num_bytes;
if (dirty)
qgroup_dirty(fs_info, qg);
}