Commit 02162a02 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: hold a ref on the root in __btrfs_run_defrag_inode 



We are looking up an arbitrary inode, we need to hold a ref on the root
while we're doing this.

Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent bdf70b9e

fs/btrfs/file.c

+5 −0
Original line number Diff line number Diff line
@@ -292,11 +292,16 @@ static int __btrfs_run_defrag_inode(struct btrfs_fs_info *fs_info, 
		ret = PTR_ERR(inode_root);

		goto cleanup;

	}

	if (!btrfs_grab_fs_root(inode_root)) {

		ret = -ENOENT;

		goto cleanup;

	}



	key.objectid = defrag->ino;

	key.type = BTRFS_INODE_ITEM_KEY;

	key.offset = 0;

	inode = btrfs_iget(fs_info->sb, &key, inode_root);

	btrfs_put_fs_root(inode_root);

	if (IS_ERR(inode)) {

		ret = PTR_ERR(inode);

		goto cleanup;