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Subject: Re: [f2fs-dev] [PATCH] f2fs: remove redundant check in
 f2fs_force_buffered_io
To:     Jaegeuk Kim <jaegeuk@kernel.org>, Chao Yu <chao@kernel.org>
CC:     <kernel-team@android.com>, <linux-kernel@vger.kernel.org>,
        <linux-f2fs-devel@lists.sourceforge.net>
References: <20200504143538.159967-1-jaegeuk@kernel.org>
 <b18c4be5-b56d-6b6e-3f99-d2fe05d330eb@kernel.org>
 <20200505032358.GA136485@google.com>
From:   Chao Yu <yuchao0@huawei.com>
Message-ID: <3b13c020-74a2-d351-15a8-261f6901b3da@huawei.com>
Date:   Wed, 6 May 2020 14:48:18 +0800
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On 2020/5/5 11:23, Jaegeuk Kim wrote:
> On 05/05, Chao Yu wrote:
>> On 2020-5-4 22:35, Jaegeuk Kim wrote:
>>> From: Daeho Jeong <daehojeong@google.com>
>>>
>>> We already checked whether the file is compressed or not in
>>> f2fs_post_read_required(). So removed f2fs_compressed_file()
>>> in f2fs_force_buffered_io().
>>
>> Agreed, since I have sent similar patch before:
>>
>> https://lkml.org/lkml/2020/3/24/1819
> 
> Heh, as I couldn't find yours, I was actually waiting for you to point out. :)

Well, all patches sent to f2fs mailing list have been archived in
lore.kernel.org/linux-f2fs-devel. :)

https://lore.kernel.org/linux-f2fs-devel/20200229104906.12061-1-yuchao0@huawei.com/

> 
>>
>> Just want to know what's the change of backport concern now.
> 
> Old ICE support had to decouple f2fs_post_read_required() and
> f2fs_forced_buffered_io(). Now, I decide to manage this as we

Copied.

> need to manage this for one kernel version only.

Okay, thanks for the explanation.

Thanks,

> 
> Thanks,
> 
>>
>> Thanks,
>>
>>>
>>> Signed-off-by: Daeho Jeong <daehojeong@google.com>
>>> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
>>> ---
>>>  fs/f2fs/f2fs.h | 2 --
>>>  1 file changed, 2 deletions(-)
>>>
>>> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
>>> index 6b7b963641696..01a00fc808361 100644
>>> --- a/fs/f2fs/f2fs.h
>>> +++ b/fs/f2fs/f2fs.h
>>> @@ -4064,8 +4064,6 @@ static inline bool f2fs_force_buffered_io(struct inode *inode,
>>>  		return true;
>>>  	if (f2fs_is_multi_device(sbi))
>>>  		return true;
>>> -	if (f2fs_compressed_file(inode))
>>> -		return true;
>>>  	/*
>>>  	 * for blkzoned device, fallback direct IO to buffered IO, so
>>>  	 * all IOs can be serialized by log-structured write.
>>>
> 
> 
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