btrfs: refactor helper for bg flags to name conversion
[sfrench/cifs-2.6.git] / fs / btrfs / volumes.c
index 2e0860d14ad2f19a00fc9eb870fd5b6dbe659d55..eb737bcd7aac6493e2040f2ab1345ce55dfa88bd 100644 (file)
@@ -123,12 +123,14 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
        },
 };
 
-const char *get_raid_name(enum btrfs_raid_types type)
+const char *btrfs_bg_type_to_raid_name(u64 flags)
 {
-       if (type >= BTRFS_NR_RAID_TYPES)
+       const int index = btrfs_bg_flags_to_raid_index(flags);
+
+       if (index >= BTRFS_NR_RAID_TYPES)
                return NULL;
 
-       return btrfs_raid_array[type].raid_name;
+       return btrfs_raid_array[index].raid_name;
 }
 
 /*
@@ -3926,11 +3928,9 @@ static void describe_balance_args(struct btrfs_balance_args *bargs, char *buf,
                bp += ret;                                              \
        } while (0)
 
-       if (flags & BTRFS_BALANCE_ARGS_CONVERT) {
-               int index = btrfs_bg_flags_to_raid_index(bargs->target);
-
-               CHECK_APPEND_1ARG("convert=%s,", get_raid_name(index));
-       }
+       if (flags & BTRFS_BALANCE_ARGS_CONVERT)
+               CHECK_APPEND_1ARG("convert=%s,",
+                                 btrfs_bg_type_to_raid_name(bargs->target));
 
        if (flags & BTRFS_BALANCE_ARGS_SOFT)
                CHECK_APPEND_NOARG("soft,");
@@ -4088,29 +4088,23 @@ int btrfs_balance(struct btrfs_fs_info *fs_info,
                        allowed |= btrfs_raid_array[i].bg_flag;
 
        if (validate_convert_profile(&bctl->data, allowed)) {
-               int index = btrfs_bg_flags_to_raid_index(bctl->data.target);
-
                btrfs_err(fs_info,
                          "balance: invalid convert data profile %s",
-                         get_raid_name(index));
+                         btrfs_bg_type_to_raid_name(bctl->data.target));
                ret = -EINVAL;
                goto out;
        }
        if (validate_convert_profile(&bctl->meta, allowed)) {
-               int index = btrfs_bg_flags_to_raid_index(bctl->meta.target);
-
                btrfs_err(fs_info,
                          "balance: invalid convert metadata profile %s",
-                         get_raid_name(index));
+                         btrfs_bg_type_to_raid_name(bctl->meta.target));
                ret = -EINVAL;
                goto out;
        }
        if (validate_convert_profile(&bctl->sys, allowed)) {
-               int index = btrfs_bg_flags_to_raid_index(bctl->sys.target);
-
                btrfs_err(fs_info,
                          "balance: invalid convert system profile %s",
-                         get_raid_name(index));
+                         btrfs_bg_type_to_raid_name(bctl->sys.target));
                ret = -EINVAL;
                goto out;
        }
@@ -4159,12 +4153,10 @@ int btrfs_balance(struct btrfs_fs_info *fs_info,
 
        if (btrfs_get_num_tolerated_disk_barrier_failures(meta_target) <
                btrfs_get_num_tolerated_disk_barrier_failures(data_target)) {
-               int meta_index = btrfs_bg_flags_to_raid_index(meta_target);
-               int data_index = btrfs_bg_flags_to_raid_index(data_target);
-
                btrfs_warn(fs_info,
        "balance: metadata profile %s has lower redundancy than data profile %s",
-                          get_raid_name(meta_index), get_raid_name(data_index));
+                               btrfs_bg_type_to_raid_name(meta_target),
+                               btrfs_bg_type_to_raid_name(data_target));
        }
 
        ret = insert_balance_item(fs_info, bctl);