[PATCH] erofs: get rid of ->lru usage

[Chao Yu]

On 2021/10/22 17:01, Gao Xiang wrote:
> Currently, ->lru is a way to arrange non-LRU pages and has some
> in-kernel users. In order to minimize noticable issues of page
> reclaim and cache thrashing under high memory presure, limited
> temporary pages were all chained with ->lru and can be reused
> during the request. However, it seems that ->lru could be removed
> when folio is landing.
> 
> Let's use page->private to chain temporary pages for now instead
> and transform EROFS formally after the topic of the folio / file
> page design is finalized.
> 
> Cc: Matthew Wilcox <willy at infradead.org>
> Cc: Kent Overstreet <kent.overstreet at gmail.com>
> Cc: Chao Yu <chao at kernel.org>
> Signed-off-by: Gao Xiang <hsiangkao at linux.alibaba.com>

Reviewed-by: Chao Yu <chao at kernel.org>

Thanks,