staging: erofs: add document

This documents key feature, usage, and on-disk design of erofs.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Cc: <linux-fsdevel@vger.kernel.org>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gao Xiang 2019-01-15 01:39:29 +08:00 • committed by Greg Kroah-Hartman
commit fdb0536469