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btrfs-progs: qgroup: Fix a bug that fails to skip rescan running case 

Commit 6bdf962fe35a8648d(btrfs-progs: Read qgroup status for qgroup
verify) will read qgroup status, and then use it to skip qgroup
reporting.

However since the rescan_running/inconsistent flags are only 1 bit long,
while qgroup flags & BTRFS_QGROUP_FLAGS returns value longer than 1bit,
it doesn't work.

Fix it by doing double negation on (flags & BTRFS_QGROUP_FLAGS) to
convert it to either 1 or 0.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
master
Qu Wenruo 2016-06-16 09:15:51 +08:00 committed by David Sterba
parent b8288277fb
commit df05c7ed45
1 changed files with 7 additions and 2 deletions
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9
qgroup-verify.c
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@ -711,8 +711,13 @@ static void read_qgroup_status(struct btrfs_path *path,
status_item = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_qgroup_status_item);
flags = btrfs_qgroup_status_flags(path->nodes[0], status_item);
counts->qgroup_inconsist = flags & BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
counts->rescan_running = flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN;
/*
* Since qgroup_inconsist/rescan_running is just one bit,
* assign value directly won't work.
*/
counts->qgroup_inconsist = !!(flags &
BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT);
counts->rescan_running = !!(flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN);
}
static int load_quota_info(struct btrfs_fs_info *info)