linux-kernel - Re: [PATCH v2 5/6] iomap: don't mark blocks uptodate after partial zeroing

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Message-ID: <5a3dd916-19a3-7c61-e19d-f257907ae47d@huaweicloud.com>
Date: Sat, 17 Aug 2024 15:16:33 +0800
From: Zhang Yi <yi.zhang@...weicloud.com>
To: Matthew Wilcox <willy@...radead.org>
Cc: linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
 linux-kernel@...r.kernel.org, djwong@...nel.org, hch@...radead.org,
 brauner@...nel.org, david@...morbit.com, jack@...e.cz, yi.zhang@...wei.com,
 chengzhihao1@...wei.com, yukuai3@...wei.com
Subject: Re: [PATCH v2 5/6] iomap: don't mark blocks uptodate after partial
 zeroing

On 2024/8/17 12:48, Matthew Wilcox wrote:
> On Mon, Aug 12, 2024 at 08:11:58PM +0800, Zhang Yi wrote:
>> +++ b/fs/iomap/buffered-io.c
>> @@ -744,8 +744,8 @@ static int __iomap_write_begin(const struct iomap_iter *iter, loff_t pos,
>>  					poff, plen, srcmap);
>>  			if (status)
>>  				return status;
>> +			iomap_set_range_uptodate(folio, poff, plen);
>>  		}
>> -		iomap_set_range_uptodate(folio, poff, plen);
>>  	} while ((block_start += plen) < block_end);
> 
> Um, what I meant was to just delete the iomap_set_range_uptodate()
> call in __iomap_write_begin() altogether.  We'll call it soon enough in
> __iomap_write_end().
> 

Yeah! Looks reasonable to me.

Thanks,
Yi.