btrfs: use helper btrfs_get_block_group

Use the helper function where it is open coded to increment the
block_group reference count As btrfs_get_block_group() is a one-liner we
could have open-coded it, but its partner function
btrfs_put_block_group() isn't one-liner which does the free part in it.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 5442b6e..6943bdd 100644 (file)
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -2924,7 +2924,7 @@ void btrfs_return_cluster_to_free_space(
                spin_unlock(&cluster->lock);
                return;
        }
-       atomic_inc(&block_group->count);
+       btrfs_get_block_group(block_group);
        spin_unlock(&cluster->lock);
 
        ctl = block_group->free_space_ctl;
@@ -3354,7 +3354,7 @@ int btrfs_find_space_cluster(struct btrfs_block_group *block_group,
                list_del_init(&entry->list);
 
        if (!ret) {
-               atomic_inc(&block_group->count);
+               btrfs_get_block_group(block_group);
                list_add_tail(&cluster->block_group_list,
                              &block_group->cluster_list);
                cluster->block_group = block_group;