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btrfs: introduce BTRFS_QGROUP_STATUS_FLAGS_MASK for later expansion

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Currently we only have 3 qgroup flags:

- BTRFS_QGROUP_STATUS_FLAG_ON
- BTRFS_QGROUP_STATUS_FLAG_RESCAN
- BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT

These flags match the on-disk flags used in btrfs_qgroup_status.

But we're going to introduce extra runtime flags which will not reach
disks.

So here we introduce a new mask, BTRFS_QGROUP_STATUS_FLAGS_MASK, to
make sure only those flags can reach disks.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2022-08-24 09:14:06 +08:00 • committed by David Sterba
parent ed2e35d85d
commit e71564c043
2 changed files with 8 additions and 2 deletions
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4
include/uapi/linux/btrfs_tree.h
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@ -965,6 +965,10 @@ static inline __u16 btrfs_qgroup_level(__u64 qgroupid)
*/
#define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2)
#define BTRFS_QGROUP_STATUS_FLAGS_MASK (BTRFS_QGROUP_STATUS_FLAG_ON | \
BTRFS_QGROUP_STATUS_FLAG_RESCAN | \
BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT)
#define BTRFS_QGROUP_STATUS_VERSION 1
struct btrfs_qgroup_status_item {