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Message-ID: <a2c7910c-4c2f-4290-a895-1c4255b2ee62@linux.alibaba.com>
Date: Fri, 5 Jan 2024 12:43:52 +0800
From: Gao Xiang <hsiangkao@...ux.alibaba.com>
To: Yu Kuai <yukuai1@...weicloud.com>, Jan Kara <jack@...e.cz>
Cc: axboe@...nel.dk, roger.pau@...rix.com, colyli@...e.de,
 kent.overstreet@...il.com, joern@...ybastard.org, miquel.raynal@...tlin.com,
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 josef@...icpanda.com, dsterba@...e.com, viro@...iv.linux.org.uk,
 brauner@...nel.org, nico@...xnic.net, xiang@...nel.org, chao@...nel.org,
 tytso@....edu, adilger.kernel@...ger.ca, jack@...e.com,
 konishi.ryusuke@...il.com, willy@...radead.org, akpm@...ux-foundation.org,
 hare@...e.de, p.raghav@...sung.com, linux-block@...r.kernel.org,
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 linux-bcachefs@...r.kernel.org, linux-btrfs@...r.kernel.org,
 linux-fsdevel@...r.kernel.org, linux-erofs@...ts.ozlabs.org,
 linux-ext4@...r.kernel.org, linux-nilfs@...r.kernel.org,
 yi.zhang@...wei.com, yangerkun@...wei.com, "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH RFC v3 for-6.8/block 11/17] erofs: use bdev api



On 2024/1/4 20:32, Yu Kuai wrote:
> Hi, Jan!
> 
> 在 2024/01/04 20:02, Jan Kara 写道:
>> On Thu 21-12-23 16:58:26, Yu Kuai wrote:
>>> From: Yu Kuai <yukuai3@...wei.com>
>>>
>>> Avoid to access bd_inode directly, prepare to remove bd_inode from
>>> block_device.
>>>
>>> Signed-off-by: Yu Kuai <yukuai3@...wei.com>
>>
>> I'm not erofs maintainer but IMO this is quite ugly and grows erofs_buf
>> unnecessarily. I'd rather store 'sb' pointer in erofs_buf and then do the
>> right thing in erofs_bread() which is the only place that seems to care
>> about the erofs_is_fscache_mode() distinction... Also blkszbits is then
>> trivially sb->s_blocksize_bits so it would all seem much more
>> straightforward.
> 
> Thanks for your suggestion, I'll follow this unless Gao Xiang has other
> suggestions.

Yes, that would be better, I'm fine with that.  Yet in the future we
may support a seperate large dirblocksize more than block size, but
we could revisit later.

Thanks,
Gao Xiang

> 
> Kuai
>>
>>                                 Honza
>>

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