diff options
Diffstat (limited to 'fs/btrfs/sysfs.c')
| -rw-r--r-- | fs/btrfs/sysfs.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 8b75e974f30b..68b7d678790c 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -2089,6 +2089,33 @@ static ssize_t qgroup_enabled_show(struct kobject *qgroups_kobj, } BTRFS_ATTR(qgroups, enabled, qgroup_enabled_show); +static ssize_t qgroup_mode_show(struct kobject *qgroups_kobj, + struct kobj_attribute *a, + char *buf) +{ + struct btrfs_fs_info *fs_info = to_fs_info(qgroups_kobj->parent); + ssize_t ret = 0; + + spin_lock(&fs_info->qgroup_lock); + ASSERT(btrfs_qgroup_enabled(fs_info)); + switch (btrfs_qgroup_mode(fs_info)) { + case BTRFS_QGROUP_MODE_FULL: + ret = sysfs_emit(buf, "qgroup\n"); + break; + case BTRFS_QGROUP_MODE_SIMPLE: + ret = sysfs_emit(buf, "squota\n"); + break; + default: + btrfs_warn(fs_info, "unexpected qgroup mode %d\n", + btrfs_qgroup_mode(fs_info)); + break; + } + spin_unlock(&fs_info->qgroup_lock); + + return ret; +} +BTRFS_ATTR(qgroups, mode, qgroup_mode_show); + static ssize_t qgroup_inconsistent_show(struct kobject *qgroups_kobj, struct kobj_attribute *a, char *buf) @@ -2151,6 +2178,7 @@ static struct attribute *qgroups_attrs[] = { BTRFS_ATTR_PTR(qgroups, enabled), BTRFS_ATTR_PTR(qgroups, inconsistent), BTRFS_ATTR_PTR(qgroups, drop_subtree_threshold), + BTRFS_ATTR_PTR(qgroups, mode), NULL }; ATTRIBUTE_GROUPS(qgroups); |