3.16.61-rc1 review patch. If anyone has any objections, please let me know.
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From: Omar Sandoval osandov@fb.com
commit c08db7d8d295a4f3a10faaca376de011afff7950 upstream.
In btrfs_evict_inode(), if btrfs_truncate_inode_items() fails, the inode item will still be in the tree but we still return the ino to the ino cache. That will blow up later when someone tries to allocate that ino, so don't return it to the cache.
Fixes: 581bb050941b ("Btrfs: Cache free inode numbers in memory") Reviewed-by: Josef Bacik jbacik@fb.com Signed-off-by: Omar Sandoval osandov@fb.com Signed-off-by: David Sterba dsterba@suse.com [bwh: Backported to 3.16: - Pass inode, not btrfs_inode, to btrfs_orphan_del() - Pass btrfs_root, not btrfs_fs_info, to btrfs_free_block_rsv() - Adjust context] Signed-off-by: Ben Hutchings ben@decadent.org.uk --- fs/btrfs/inode.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-)
--- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4908,13 +4908,18 @@ void btrfs_evict_inode(struct inode *ino trans->block_rsv = rsv;
ret = btrfs_truncate_inode_items(trans, root, inode, 0, 0); - if (ret != -ENOSPC) + if (ret) { + trans->block_rsv = &root->fs_info->trans_block_rsv; + btrfs_end_transaction(trans, root); + btrfs_btree_balance_dirty(root); + if (ret != -ENOSPC) { + btrfs_orphan_del(NULL, inode); + btrfs_free_block_rsv(root, rsv); + goto no_delete; + } + } else { break; - - trans->block_rsv = &root->fs_info->trans_block_rsv; - btrfs_end_transaction(trans, root); - trans = NULL; - btrfs_btree_balance_dirty(root); + } }
btrfs_free_block_rsv(root, rsv); @@ -4923,12 +4928,8 @@ void btrfs_evict_inode(struct inode *ino * Errors here aren't a big deal, it just means we leave orphan items * in the tree. They will be cleaned up on the next mount. */ - if (ret == 0) { - trans->block_rsv = root->orphan_block_rsv; - btrfs_orphan_del(trans, inode); - } else { - btrfs_orphan_del(NULL, inode); - } + trans->block_rsv = root->orphan_block_rsv; + btrfs_orphan_del(trans, inode);
trans->block_rsv = &root->fs_info->trans_block_rsv; if (!(root == root->fs_info->tree_root ||