Commit ca456ae2 authored by liubo's avatar liubo Committed by Chris Mason
Browse files

Btrfs: don't save the inode cache in non-FS roots

This adds extra checks to make sure the inode map we are caching really
belongs to a FS root instead of a special relocation tree.  It
prevents crashes during balancing operations.

Signed-off-by: default avatarLiu Bo <>
Signed-off-by: default avatarChris Mason <>
parent 211f96c2
......@@ -388,6 +388,12 @@ int btrfs_save_ino_cache(struct btrfs_root *root,
int prealloc;
bool retry = false;
/* only fs tree and subvol/snap needs ino cache */
if (root->root_key.objectid != BTRFS_FS_TREE_OBJECTID &&
(root->root_key.objectid < BTRFS_FIRST_FREE_OBJECTID ||
root->root_key.objectid > BTRFS_LAST_FREE_OBJECTID))
return 0;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment