[PATCH v2 4/8] staging: erofs: move stagingpage operations to compress.h

[Chao Yu]

On 2019/6/21 0:07, Gao Xiang wrote:
> stagingpages are behaved as bounce pages for temporary use.
> Move to compress.h since the upcoming decompressor will
> allocate stagingpages as well.
> 
> Signed-off-by: Gao Xiang <gaoxiang25 at huawei.com>

Reviewed-by: Chao Yu <yuchao0 at huawei.com>

Thanks,