Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

[karo-tx-linux.git] / fs / btrfs / ioctl.h

diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
index 731e2875ab93900b0f623797642f371b2f042e2f..dabca9cc8c2ebe72a7c440d2147e985bcc6b3c2c 100644 (file)
--- a/fs/btrfs/ioctl.h
+++ b/fs/btrfs/ioctl.h
@@ -30,6 +30,8 @@ struct btrfs_ioctl_vol_args {
        char name[BTRFS_PATH_NAME_MAX + 1];
 };
 
+#define BTRFS_DEVICE_PATH_NAME_MAX 1024
+
 #define BTRFS_SUBVOL_CREATE_ASYNC      (1ULL << 0)
 #define BTRFS_SUBVOL_RDONLY            (1ULL << 1)
 #define BTRFS_SUBVOL_QGROUP_INHERIT    (1ULL << 2)
@@ -123,7 +125,48 @@ struct btrfs_ioctl_scrub_args {
        __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
 };
 
-#define BTRFS_DEVICE_PATH_NAME_MAX 1024
+#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS   0
+#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID    1
+struct btrfs_ioctl_dev_replace_start_params {
+       __u64 srcdevid; /* in, if 0, use srcdev_name instead */
+       __u64 cont_reading_from_srcdev_mode;    /* in, see #define
+                                                * above */
+       __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1];       /* in */
+       __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1];       /* in */
+};
+
+#define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED    0
+#define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED          1
+#define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED         2
+#define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED         3
+#define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED                4
+struct btrfs_ioctl_dev_replace_status_params {
+       __u64 replace_state;    /* out, see #define above */
+       __u64 progress_1000;    /* out, 0 <= x <= 1000 */
+       __u64 time_started;     /* out, seconds since 1-Jan-1970 */
+       __u64 time_stopped;     /* out, seconds since 1-Jan-1970 */
+       __u64 num_write_errors; /* out */
+       __u64 num_uncorrectable_read_errors;    /* out */
+};
+
+#define BTRFS_IOCTL_DEV_REPLACE_CMD_START                      0
+#define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS                     1
+#define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL                     2
+#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR                        0
+#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED             1
+#define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED         2
+struct btrfs_ioctl_dev_replace_args {
+       __u64 cmd;      /* in */
+       __u64 result;   /* out */
+
+       union {
+               struct btrfs_ioctl_dev_replace_start_params start;
+               struct btrfs_ioctl_dev_replace_status_params status;
+       };      /* in/out */
+
+       __u64 spare[64];
+};
+
 struct btrfs_ioctl_dev_info_args {
        __u64 devid;                            /* in/out */
        __u8 uuid[BTRFS_UUID_SIZE];             /* in/out */
@@ -453,4 +496,7 @@ struct btrfs_ioctl_send_args {
                               struct btrfs_ioctl_qgroup_limit_args)
 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
                                      struct btrfs_ioctl_get_dev_stats)
+#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
+                                   struct btrfs_ioctl_dev_replace_args)
+
 #endif