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authorWang Shilong <wangsl-fnst@cn.fujitsu.com>2013-02-27 11:16:57 +0000
committerJosef Bacik <jbacik@fusionio.com>2013-03-01 10:13:03 -0500
commit06b3a860dcf596bdc2bb1cca3252d3907b581938 (patch)
tree9166d47ee4c0cc1c19521db17880b6a5b254c907 /fs
parentb8dae3138876080d4dd98cc438ff759338d632ef (diff)
downloadlinux-stericsson-06b3a860dcf596bdc2bb1cca3252d3907b581938.tar.gz
Btrfs: fix missing deleted items in btrfs_clean_quota_tree
Steps to reproduce: i=0 ncases=100 mkfs.btrfs <disk> mount <disk> <mnt> btrfs quota enable <mnt> btrfs qgroup create 2/1 <mnt> while [ $i -le $ncases ] do btrfs qgroup create 1/$i <mnt> btrfs qgroup assign 1/$i 2/1 <mnt> i=$(($i+1)) done btrfs quota disable <mnt> umount <mnt> btrfsck <mnt> You can also use the commands: btrfs-debug-tree <disk> | grep QGROUP You will find there are still items existed.The reasons why this happens is because the original code just checks slots[0]==0 and returns. We try to fix it by deleting the leaf one by one. Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/qgroup.c34
1 files changed, 21 insertions, 13 deletions
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 88ab785bbd73..f011d9b8ffb1 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -732,7 +732,9 @@ static int btrfs_clean_quota_tree(struct btrfs_trans_handle *trans,
{
struct btrfs_path *path;
struct btrfs_key key;
+ struct extent_buffer *leaf = NULL;
int ret;
+ int nr = 0;
if (!root)
return -EINVAL;
@@ -741,24 +743,30 @@ static int btrfs_clean_quota_tree(struct btrfs_trans_handle *trans,
if (!path)
return -ENOMEM;
- while (1) {
- key.objectid = 0;
- key.offset = 0;
- key.type = 0;
+ path->leave_spinning = 1;
- path->leave_spinning = 1;
+ key.objectid = 0;
+ key.offset = 0;
+ key.type = 0;
+
+ while (1) {
ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
- if (ret > 0) {
- if (path->slots[0] == 0)
- break;
- path->slots[0]--;
- } else if (ret < 0) {
+ if (ret < 0)
+ goto out;
+ leaf = path->nodes[0];
+ nr = btrfs_header_nritems(leaf);
+ if (!nr)
break;
- }
-
- ret = btrfs_del_item(trans, root, path);
+ /*
+ * delete the leaf one by one
+ * since the whole tree is going
+ * to be deleted.
+ */
+ path->slots[0] = 0;
+ ret = btrfs_del_items(trans, root, path, 0, nr);
if (ret)
goto out;
+
btrfs_release_path(path);
}
ret = 0;