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-rw-r--r--fs/btrfs/inode-map.c28
1 files changed, 24 insertions, 4 deletions
diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c
index 53dcbdf446cd..f8962a957d65 100644
--- a/fs/btrfs/inode-map.c
+++ b/fs/btrfs/inode-map.c
@@ -398,6 +398,8 @@ int btrfs_save_ino_cache(struct btrfs_root *root,
struct btrfs_free_space_ctl *ctl = root->free_ino_ctl;
struct btrfs_path *path;
struct inode *inode;
+ struct btrfs_block_rsv *rsv;
+ u64 num_bytes;
u64 alloc_hint = 0;
int ret;
int prealloc;
@@ -421,11 +423,26 @@ int btrfs_save_ino_cache(struct btrfs_root *root,
if (!path)
return -ENOMEM;
+ rsv = trans->block_rsv;
+ trans->block_rsv = &root->fs_info->trans_block_rsv;
+
+ num_bytes = trans->bytes_reserved;
+ /*
+ * 1 item for inode item insertion if need
+ * 3 items for inode item update (in the worst case)
+ * 1 item for free space object
+ * 3 items for pre-allocation
+ */
+ trans->bytes_reserved = btrfs_calc_trans_metadata_size(root, 8);
+ ret = btrfs_block_rsv_add_noflush(root, trans->block_rsv,
+ trans->bytes_reserved);
+ if (ret)
+ goto out;
again:
inode = lookup_free_ino_inode(root, path);
if (IS_ERR(inode) && PTR_ERR(inode) != -ENOENT) {
ret = PTR_ERR(inode);
- goto out;
+ goto out_release;
}
if (IS_ERR(inode)) {
@@ -434,7 +451,7 @@ again:
ret = create_free_ino_inode(root, trans, path);
if (ret)
- goto out;
+ goto out_release;
goto again;
}
@@ -477,11 +494,14 @@ again:
}
btrfs_free_reserved_data_space(inode, prealloc);
+ ret = btrfs_write_out_ino_cache(root, trans, path);
out_put:
iput(inode);
+out_release:
+ btrfs_block_rsv_release(root, trans->block_rsv, trans->bytes_reserved);
out:
- if (ret == 0)
- ret = btrfs_write_out_ino_cache(root, trans, path);
+ trans->block_rsv = rsv;
+ trans->bytes_reserved = num_bytes;
btrfs_free_path(path);
return ret;