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

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Message-ID: <b4d6a7ab-15a3-8bcd-7627-ea9c3200c012@kernel.org>
Date:   Fri, 22 Oct 2021 22:14:15 +0800
From:   Chao Yu <chao@...nel.org>
To:     Gao Xiang <hsiangkao@...ux.alibaba.com>,
        linux-erofs@...ts.ozlabs.org
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Kent Overstreet <kent.overstreet@...il.com>
Subject: Re: [PATCH] erofs: get rid of ->lru usage

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@...radead.org>
> Cc: Kent Overstreet <kent.overstreet@...il.com>
> Cc: Chao Yu <chao@...nel.org>
> Signed-off-by: Gao Xiang <hsiangkao@...ux.alibaba.com>

Reviewed-by: Chao Yu <chao@...nel.org>

Thanks,