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| author | Wang Shilong <wangsl-fnst@cn.fujitsu.com> | 2013-02-27 11:16:57 +0000 |
|---|---|---|
| committer | Josef Bacik <jbacik@fusionio.com> | 2013-03-01 10:13:03 -0500 |
| commit | 06b3a860dcf596bdc2bb1cca3252d3907b581938 (patch) | |
| tree | 9166d47ee4c0cc1c19521db17880b6a5b254c907 /fs | |
| parent | b8dae3138876080d4dd98cc438ff759338d632ef (diff) | |
| download | lwn-06b3a860dcf596bdc2bb1cca3252d3907b581938.tar.gz lwn-06b3a860dcf596bdc2bb1cca3252d3907b581938.zip | |
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.c | 34 |
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; |