linux-kernel - Re: [PATCH] erofs: remove unneeded parameter

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Message-ID: <20200916143648.GA23921@xiangao.remote.csb>
Date:   Wed, 16 Sep 2020 22:36:48 +0800
From:   Gao Xiang <hsiangkao@...hat.com>
To:     Chao Yu <chao@...nel.org>
Cc:     linux-erofs@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Chao Yu <yuchao0@...wei.com>
Subject: Re: [PATCH] erofs: remove unneeded parameter

On Wed, Sep 16, 2020 at 10:33:04PM +0800, Gao Xiang wrote:
> Hi Chao,
> 
> On Wed, Sep 16, 2020 at 10:06:04PM +0800, Chao Yu wrote:
> > From: Chao Yu <yuchao0@...wei.com>
> > 
> > In below call path, no page will be cached into @pagepool list
> > or grabbed from @pagepool list:
> > - z_erofs_readpage
> >  - z_erofs_do_read_page
> >   - preload_compressed_pages
> >   - erofs_allocpage
> > 
> > Let's get rid of this unneeded parameter.
> 
> That would be unneeded after .readahead() is introduced recently
> (so add_to_page_cache_lru() is also moved to mm code), so I agree
> with you on it.

(cont.)

... also it'd be better to add such historical reason to the commit
message... since it was of some use before...

Thanks,
Gao Xiang