btrfs: zoned: factor out single bg handling from btrfs_load_block_group_zone_info

Split the code handling a type single block group from
btrfs_load_block_group_zone_info to make the code more readable.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c
index 838421f2918db3cb1dcc8132c63490d58694d4df..4d1be2c3488ddcb4bf3c5fbbd27dc517f4a26fda 100644 (file)
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -1374,6 +1374,24 @@ static int btrfs_load_zone_info(struct btrfs_fs_info *fs_info, int zone_idx,
        return 0;
 }
 
+static int btrfs_load_block_group_single(struct btrfs_block_group *bg,
+                                        struct zone_info *info,
+                                        unsigned long *active)
+{
+       if (info->alloc_offset == WP_MISSING_DEV) {
+               btrfs_err(bg->fs_info,
+                       "zoned: cannot recover write pointer for zone %llu",
+                       info->physical);
+               return -EIO;
+       }
+
+       bg->alloc_offset = info->alloc_offset;
+       bg->zone_capacity = info->capacity;
+       if (test_bit(0, active))
+               set_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &bg->runtime_flags);
+       return 0;
+}
+
 int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new)
 {
        struct btrfs_fs_info *fs_info = cache->fs_info;
@@ -1460,17 +1478,7 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new)
 
        switch (map->type & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
        case 0: /* single */
-               if (zone_info[0].alloc_offset == WP_MISSING_DEV) {
-                       btrfs_err(fs_info,
-                       "zoned: cannot recover write pointer for zone %llu",
-                               zone_info[0].physical);
-                       ret = -EIO;
-                       goto out;
-               }
-               cache->alloc_offset = zone_info[0].alloc_offset;
-               cache->zone_capacity = zone_info[0].capacity;
-               if (test_bit(0, active))
-                       set_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &cache->runtime_flags);
+               ret = btrfs_load_block_group_single(cache, &zone_info[0], active);
                break;
        case BTRFS_BLOCK_GROUP_DUP:
                if (map->type & BTRFS_BLOCK_GROUP_DATA) {