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-rw-r--r--fs/btrfs/inode.c23
1 files changed, 19 insertions, 4 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 85fd86ea9830..619742d37166 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1951,12 +1951,28 @@ enum btrfs_orphan_cleanup_state {
void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
+ struct btrfs_block_rsv *block_rsv;
int ret;
if (!list_empty(&root->orphan_list) ||
root->orphan_cleanup_state != ORPHAN_CLEANUP_DONE)
return;
+ spin_lock(&root->orphan_lock);
+ if (!list_empty(&root->orphan_list)) {
+ spin_unlock(&root->orphan_lock);
+ return;
+ }
+
+ if (root->orphan_cleanup_state != ORPHAN_CLEANUP_DONE) {
+ spin_unlock(&root->orphan_lock);
+ return;
+ }
+
+ block_rsv = root->orphan_block_rsv;
+ root->orphan_block_rsv = NULL;
+ spin_unlock(&root->orphan_lock);
+
if (root->orphan_item_inserted &&
btrfs_root_refs(&root->root_item) > 0) {
ret = btrfs_del_orphan_item(trans, root->fs_info->tree_root,
@@ -1965,10 +1981,9 @@ void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
root->orphan_item_inserted = 0;
}
- if (root->orphan_block_rsv) {
- WARN_ON(root->orphan_block_rsv->size > 0);
- btrfs_free_block_rsv(root, root->orphan_block_rsv);
- root->orphan_block_rsv = NULL;
+ if (block_rsv) {
+ WARN_ON(block_rsv->size > 0);
+ btrfs_free_block_rsv(root, block_rsv);
}
}