btrfs: export block_rsv_use_bytes

We are going to need this to move the metadata reservation stuff to
space_info.c.

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

1 files changed, 5 insertions, 8 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 7b4a287e0c5c..b0cd367994a8 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -53,8 +53,6 @@ static int find_next_key(struct btrfs_path *path, int level,
 static void dump_space_info(struct btrfs_fs_info *fs_info,
                             struct btrfs_space_info *info, u64 bytes,
                             int dump_block_groups);
-static int block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv,
-                               u64 num_bytes);
 
 static noinline int
 block_group_cache_done(struct btrfs_block_group_cache *cache)
@@ -5031,7 +5029,7 @@ static int reserve_metadata_bytes(struct btrfs_root *root,
         if (ret == -ENOSPC &&
             unlikely(root->orphan_cleanup_state == ORPHAN_CLEANUP_STARTED)) {
                 if (block_rsv != global_rsv &&
-                    !block_rsv_use_bytes(global_rsv, orig_bytes))
+                    !btrfs_block_rsv_use_bytes(global_rsv, orig_bytes))
                         ret = 0;
         }
         if (ret == -ENOSPC) {
@@ -5067,8 +5065,7 @@ static struct btrfs_block_rsv *get_block_rsv(
         return block_rsv;
 }
 
-static int block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv,
-                               u64 num_bytes)
+int btrfs_block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv, u64 num_bytes)
 {
         int ret = -ENOSPC;
         spin_lock(&block_rsv->lock);
@@ -5265,7 +5262,7 @@ int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src,
 {
         int ret;
 
-        ret = block_rsv_use_bytes(src, num_bytes);
+        ret = btrfs_block_rsv_use_bytes(src, num_bytes);
         if (ret)
                 return ret;
 
@@ -8134,7 +8131,7 @@ use_block_rsv(struct btrfs_trans_handle *trans,
         if (unlikely(block_rsv->size == 0))
                 goto try_reserve;
 again:
-        ret = block_rsv_use_bytes(block_rsv, blocksize);
+        ret = btrfs_block_rsv_use_bytes(block_rsv, blocksize);
         if (!ret)
                 return block_rsv;
 
@@ -8172,7 +8169,7 @@ try_reserve:
          */
         if (block_rsv->type != BTRFS_BLOCK_RSV_GLOBAL &&
             block_rsv->space_info == global_rsv->space_info) {
-                ret = block_rsv_use_bytes(global_rsv, blocksize);
+                ret = btrfs_block_rsv_use_bytes(global_rsv, blocksize);
                 if (!ret)
                         return global_rsv;
         }