Josef Bacik
2013-Jul-26 13:14 UTC
[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 <jbacik@fusionio.com>
---
fs/btrfs/file.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 94413af..36ddd20 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;
--
1.7.7.6
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