btrfs: temporarily export inc_block_group_ro

This is used in a few logical parts of the block group code, temporarily
export it so we can move things in pieces.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/block-group.h b/fs/btrfs/block-group.h
index 80b388e..143baaa 100644 (file)
--- a/fs/btrfs/block-group.h
+++ b/fs/btrfs/block-group.h
@@ -185,4 +185,6 @@ static inline int btrfs_block_group_cache_done(
                cache->cached == BTRFS_CACHE_ERROR;
 }
 
+int __btrfs_inc_block_group_ro(struct btrfs_block_group_cache *cache, int force);
+
 #endif /* BTRFS_BLOCK_GROUP_H */

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 4b35232..08bd671 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -6697,7 +6697,7 @@ static u64 update_block_group_flags(struct btrfs_fs_info *fs_info, u64 flags)
  * data in this block group. That check should be done by relocation routine,
  * not this function.
  */
-static int inc_block_group_ro(struct btrfs_block_group_cache *cache, int force)
+int __btrfs_inc_block_group_ro(struct btrfs_block_group_cache *cache, int force)
 {
        struct btrfs_space_info *sinfo = cache->space_info;
        u64 num_bytes;
@@ -6807,14 +6807,14 @@ again:
                        goto out;
        }
 
-       ret = inc_block_group_ro(cache, 0);
+       ret = __btrfs_inc_block_group_ro(cache, 0);
        if (!ret)
                goto out;
        alloc_flags = get_alloc_profile(fs_info, cache->space_info->flags);
        ret = btrfs_chunk_alloc(trans, alloc_flags, CHUNK_ALLOC_FORCE);
        if (ret < 0)
                goto out;
-       ret = inc_block_group_ro(cache, 0);
+       ret = __btrfs_inc_block_group_ro(cache, 0);
 out:
        if (cache->flags & BTRFS_BLOCK_GROUP_SYSTEM) {
                alloc_flags = update_block_group_flags(fs_info, cache->flags);
@@ -7347,7 +7347,7 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info)
 
                set_avail_alloc_bits(info, cache->flags);
                if (btrfs_chunk_readonly(info, cache->key.objectid)) {
-                       inc_block_group_ro(cache, 1);
+                       __btrfs_inc_block_group_ro(cache, 1);
                } else if (btrfs_block_group_used(&cache->item) == 0) {
                        ASSERT(list_empty(&cache->bg_list));
                        btrfs_mark_bg_unused(cache);
@@ -7368,11 +7368,11 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info)
                list_for_each_entry(cache,
                                &space_info->block_groups[BTRFS_RAID_RAID0],
                                list)
-                       inc_block_group_ro(cache, 1);
+                       __btrfs_inc_block_group_ro(cache, 1);
                list_for_each_entry(cache,
                                &space_info->block_groups[BTRFS_RAID_SINGLE],
                                list)
-                       inc_block_group_ro(cache, 1);
+                       __btrfs_inc_block_group_ro(cache, 1);
        }
 
        btrfs_init_global_block_rsv(info);
@@ -7911,7 +7911,7 @@ void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info)
                spin_unlock(&block_group->lock);
 
                /* We don't want to force the issue, only flip if it's ok. */
-               ret = inc_block_group_ro(block_group, 0);
+               ret = __btrfs_inc_block_group_ro(block_group, 0);
                up_write(&space_info->groups_sem);
                if (ret < 0) {
                        ret = 0;