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>

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 8fca403..b78470f 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2844,6 +2844,7 @@ int btrfs_block_rsv_refill(struct btrfs_root *root,
 int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
                            struct btrfs_block_rsv *dst_rsv, u64 num_bytes,
                            bool update_size);
+int btrfs_block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv, u64 num_bytes);
 int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info,
                             struct btrfs_block_rsv *dest, u64 num_bytes,
                             int min_factor);

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 7b4a287..b0cd367 100644 (file)
--- 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;
        }