btrfs: qgroup: allow user to clear the limitation on qgroup
Currently, we can only set a limitation on a qgroup, but we can not clear it. This patch provide a choice to user to clear a limitation on qgroup by passing a value of CLEAR_VALUE(-1) to kernel. Reported-by:Tsutomu Itoh <t-itoh@jp.fujitsu.com> Signed-off-by:
Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Tested-by:
Tsutomu Itoh <t-itoh@jp.fujitsu.com> Signed-off-by:
Chris Mason <clm@fb.com>
parent
5a5003df
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