btrfs: Handle uninitialised inode eviction

[cascardo/linux.git] / fs / btrfs / inode.c

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 3e61bd1..5c2c076 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5159,11 +5159,18 @@ void btrfs_evict_inode(struct inode *inode)
        struct btrfs_root *root = BTRFS_I(inode)->root;
        struct btrfs_block_rsv *rsv, *global_rsv;
        int steal_from_global = 0;
-       u64 min_size = btrfs_calc_trunc_metadata_size(root, 1);
+       u64 min_size;
        int ret;
 
        trace_btrfs_inode_evict(inode);
 
+       if (!root) {
+               kmem_cache_free(btrfs_inode_cachep, BTRFS_I(inode));
+               return;
+       }
+
+       min_size = btrfs_calc_trunc_metadata_size(root, 1);
+
        evict_inode_truncate_pages(inode);
 
        if (inode->i_nlink &&