From 2112ac800d43e795323bc18558e43fd3641da4ed Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 26 Jul 2013 09:13:15 -0400 Subject: [PATCH] Btrfs: don't bother autodefragging if our root is going away We can end up with inodes on the auto defrag list that exist on roots that are going to be deleted. This is extra work we don't need to do, so just bail if our root has 0 root refs. Thanks, Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/file.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 8e686a4..8cc941e 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -310,6 +310,11 @@ static int __btrfs_run_defrag_inode(struct btrfs_fs_info *fs_info, goto cleanup; } + if (btrfs_root_refs(&inode_root->root_item) == 0) { + ret = -ENOENT; + goto cleanup; + } + key.objectid = defrag->ino; btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY); key.offset = 0; -- 2.7.4