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path: root/fs/btrfs/qgroup.c
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Diffstat (limited to 'fs/btrfs/qgroup.c')
-rw-r--r--fs/btrfs/qgroup.c82
1 files changed, 57 insertions, 25 deletions
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 5be5a39dedc4..0a1f6861ae9a 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -791,6 +791,7 @@ int btrfs_quota_enable(struct btrfs_trans_handle *trans,
int ret = 0;
int slot;
+ mutex_lock(&fs_info->qgroup_ioctl_lock);
spin_lock(&fs_info->qgroup_lock);
if (fs_info->quota_root) {
fs_info->pending_quota_state = 1;
@@ -900,6 +901,7 @@ out_free_root:
kfree(quota_root);
}
out:
+ mutex_unlock(&fs_info->qgroup_ioctl_lock);
return ret;
}
@@ -910,10 +912,11 @@ int btrfs_quota_disable(struct btrfs_trans_handle *trans,
struct btrfs_root *quota_root;
int ret = 0;
+ mutex_lock(&fs_info->qgroup_ioctl_lock);
spin_lock(&fs_info->qgroup_lock);
if (!fs_info->quota_root) {
spin_unlock(&fs_info->qgroup_lock);
- return 0;
+ goto out;
}
fs_info->quota_enabled = 0;
fs_info->pending_quota_state = 0;
@@ -922,8 +925,10 @@ int btrfs_quota_disable(struct btrfs_trans_handle *trans,
btrfs_free_qgroup_config(fs_info);
spin_unlock(&fs_info->qgroup_lock);
- if (!quota_root)
- return -EINVAL;
+ if (!quota_root) {
+ ret = -EINVAL;
+ goto out;
+ }
ret = btrfs_clean_quota_tree(trans, quota_root);
if (ret)
@@ -944,6 +949,7 @@ int btrfs_quota_disable(struct btrfs_trans_handle *trans,
free_extent_buffer(quota_root->commit_root);
kfree(quota_root);
out:
+ mutex_unlock(&fs_info->qgroup_ioctl_lock);
return ret;
}
@@ -959,24 +965,28 @@ int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans,
struct btrfs_root *quota_root;
int ret = 0;
+ mutex_lock(&fs_info->qgroup_ioctl_lock);
quota_root = fs_info->quota_root;
- if (!quota_root)
- return -EINVAL;
+ if (!quota_root) {
+ ret = -EINVAL;
+ goto out;
+ }
ret = add_qgroup_relation_item(trans, quota_root, src, dst);
if (ret)
- return ret;
+ goto out;
ret = add_qgroup_relation_item(trans, quota_root, dst, src);
if (ret) {
del_qgroup_relation_item(trans, quota_root, src, dst);
- return ret;
+ goto out;
}
spin_lock(&fs_info->qgroup_lock);
ret = add_relation_rb(quota_root->fs_info, src, dst);
spin_unlock(&fs_info->qgroup_lock);
-
+out:
+ mutex_unlock(&fs_info->qgroup_ioctl_lock);
return ret;
}
@@ -987,9 +997,12 @@ int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans,
int ret = 0;
int err;
+ mutex_lock(&fs_info->qgroup_ioctl_lock);
quota_root = fs_info->quota_root;
- if (!quota_root)
- return -EINVAL;
+ if (!quota_root) {
+ ret = -EINVAL;
+ goto out;
+ }
ret = del_qgroup_relation_item(trans, quota_root, src, dst);
err = del_qgroup_relation_item(trans, quota_root, dst, src);
@@ -1000,7 +1013,8 @@ int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans,
del_relation_rb(fs_info, src, dst);
spin_unlock(&fs_info->qgroup_lock);
-
+out:
+ mutex_unlock(&fs_info->qgroup_ioctl_lock);
return ret;
}
@@ -1011,9 +1025,12 @@ int btrfs_create_qgroup(struct btrfs_trans_handle *trans,
struct btrfs_qgroup *qgroup;
int ret = 0;
+ mutex_lock(&fs_info->qgroup_ioctl_lock);
quota_root = fs_info->quota_root;
- if (!quota_root)
- return -EINVAL;
+ if (!quota_root) {
+ ret = -EINVAL;
+ goto out;
+ }
ret = add_qgroup_item(trans, quota_root, qgroupid);
@@ -1023,7 +1040,8 @@ int btrfs_create_qgroup(struct btrfs_trans_handle *trans,
if (IS_ERR(qgroup))
ret = PTR_ERR(qgroup);
-
+out:
+ mutex_unlock(&fs_info->qgroup_ioctl_lock);
return ret;
}
@@ -1034,9 +1052,12 @@ int btrfs_remove_qgroup(struct btrfs_trans_handle *trans,
struct btrfs_qgroup *qgroup;
int ret = 0;
+ mutex_lock(&fs_info->qgroup_ioctl_lock);
quota_root = fs_info->quota_root;
- if (!quota_root)
- return -EINVAL;
+ if (!quota_root) {
+ ret = -EINVAL;
+ goto out;
+ }
/* check if there are no relations to this qgroup */
spin_lock(&fs_info->qgroup_lock);
@@ -1044,7 +1065,8 @@ int btrfs_remove_qgroup(struct btrfs_trans_handle *trans,
if (qgroup) {
if (!list_empty(&qgroup->groups) || !list_empty(&qgroup->members)) {
spin_unlock(&fs_info->qgroup_lock);
- return -EBUSY;
+ ret = -EBUSY;
+ goto out;
}
}
spin_unlock(&fs_info->qgroup_lock);
@@ -1054,7 +1076,8 @@ int btrfs_remove_qgroup(struct btrfs_trans_handle *trans,
spin_lock(&fs_info->qgroup_lock);
del_qgroup_rb(quota_root->fs_info, qgroupid);
spin_unlock(&fs_info->qgroup_lock);
-
+out:
+ mutex_unlock(&fs_info->qgroup_ioctl_lock);
return ret;
}
@@ -1062,12 +1085,16 @@ int btrfs_limit_qgroup(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, u64 qgroupid,
struct btrfs_qgroup_limit *limit)
{
- struct btrfs_root *quota_root = fs_info->quota_root;
+ struct btrfs_root *quota_root;
struct btrfs_qgroup *qgroup;
int ret = 0;
- if (!quota_root)
- return -EINVAL;
+ mutex_lock(&fs_info->qgroup_ioctl_lock);
+ quota_root = fs_info->quota_root;
+ if (!quota_root) {
+ ret = -EINVAL;
+ goto out;
+ }
ret = update_qgroup_limit_item(trans, quota_root, qgroupid,
limit->flags, limit->max_rfer,
@@ -1094,7 +1121,8 @@ int btrfs_limit_qgroup(struct btrfs_trans_handle *trans,
unlock:
spin_unlock(&fs_info->qgroup_lock);
-
+out:
+ mutex_unlock(&fs_info->qgroup_ioctl_lock);
return ret;
}
@@ -1392,11 +1420,14 @@ int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans,
struct btrfs_qgroup *dstgroup;
u32 level_size = 0;
+ mutex_lock(&fs_info->qgroup_ioctl_lock);
if (!fs_info->quota_enabled)
- return 0;
+ goto out;
- if (!quota_root)
- return -EINVAL;
+ if (!quota_root) {
+ ret = -EINVAL;
+ goto out;
+ }
/*
* create a tracking group for the subvol itself
@@ -1523,6 +1554,7 @@ int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans,
unlock:
spin_unlock(&fs_info->qgroup_lock);
out:
+ mutex_unlock(&fs_info->qgroup_ioctl_lock);
return ret;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-30 06:23:58 +0300