Btrfs-progs: quota rescan

This adds the quota rescan command to be used if qgroup tracking should get
out of sync. Can also be used to query the status of a running rescan
operation.

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>

1 files changed, 27 insertions, 19 deletions

diff --git a/ioctl.h b/ioctl.h
index e841913b..1ee631ae 100644
--- a/ioctl.h
+++ b/ioctl.h
@@ -384,25 +384,6 @@ struct btrfs_ioctl_send_args {
 	__u64 reserved[4];		/* in */
 };
 
-#define BTRFS_QUOTA_CTL_ENABLE	1
-#define BTRFS_QUOTA_CTL_DISABLE	2
-#define BTRFS_QUOTA_CTL_RESCAN	3
-struct btrfs_ioctl_quota_ctl_args {
-	__u64 cmd;
-	__u64 status;
-};
-
-struct btrfs_ioctl_qgroup_assign_args {
-	__u64 assign;
-	__u64 src;
-	__u64 dst;
-};
-
-struct btrfs_ioctl_qgroup_create_args {
-	__u64 create;
-	__u64 qgroupid;
-};
-
 enum btrfs_dev_stat_values {
 	/* disk I/O failure stats */
 	BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
@@ -437,6 +418,29 @@ struct btrfs_ioctl_get_dev_stats {
 };
 
 /* BTRFS_IOC_SNAP_CREATE is no longer used by the btrfs command */
+#define BTRFS_QUOTA_CTL_ENABLE	1
+#define BTRFS_QUOTA_CTL_DISABLE	2
+/* 3 has formerly been reserved for BTRFS_QUOTA_CTL_RESCAN */
+struct btrfs_ioctl_quota_ctl_args {
+	__u64 cmd;
+	__u64 status;
+};
+
+struct btrfs_ioctl_quota_rescan_args {
+	__u64	flags;
+	__u64   progress;
+};
+
+struct btrfs_ioctl_qgroup_assign_args {
+	__u64 assign;
+	__u64 src;
+	__u64 dst;
+};
+
+struct btrfs_ioctl_qgroup_create_args {
+	__u64 create;
+	__u64 qgroupid;
+};
 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
 				   struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
@@ -520,6 +524,10 @@ struct btrfs_ioctl_clone_range_args {
 					struct btrfs_ioctl_qgroup_create_args)
 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
 					struct btrfs_ioctl_qgroup_limit_args)
+#define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \
+			       struct btrfs_ioctl_quota_rescan_args)
+#define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \
+			       struct btrfs_ioctl_quota_rescan_args)
 #define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \
 				   char[BTRFS_LABEL_SIZE])
 #define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50, \