linux-kernel - Re: [PATCH -next 2/2] ext4: adjust fast commit disable judgement order in ext4_fc_track

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Date:   Thu, 15 Sep 2022 22:42:58 +0800
From:   yebin <yebin10@...wei.com>
To:     Jan Kara <jack@...e.cz>
CC:     <tytso@....edu>, <adilger.kernel@...ger.ca>,
        <linux-ext4@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next 2/2] ext4: adjust fast commit disable judgement
 order in ext4_fc_track_inode



On 2022/9/15 22:30, Jan Kara wrote:
> On Thu 15-09-22 21:56:11, Ye Bin wrote:
>> Judge filesystem if fast commit disabled before test inode's journal mode.
>>
>> Signed-off-by: Ye Bin <yebin10@...wei.com>
> Probably makes sense but is there any particular reason why you do this?
>
> 								Honza

I think the impact of fast commit on normal processes should be minimized.

>
>> ---
>>   fs/ext4/fast_commit.c | 6 +++---
>>   1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c
>> index eadab945b856..9217a588afd1 100644
>> --- a/fs/ext4/fast_commit.c
>> +++ b/fs/ext4/fast_commit.c
>> @@ -577,15 +577,15 @@ void ext4_fc_track_inode(handle_t *handle, struct inode *inode)
>>   	if (S_ISDIR(inode->i_mode))
>>   		return;
>>   
>> +	if (ext4_fc_disabled(inode->i_sb))
>> +		return;
>> +
>>   	if (ext4_should_journal_data(inode)) {
>>   		ext4_fc_mark_ineligible(inode->i_sb,
>>   					EXT4_FC_REASON_INODE_JOURNAL_DATA, handle);
>>   		return;
>>   	}
>>   
>> -	if (ext4_fc_disabled(inode->i_sb))
>> -		return;
>> -
>>   	if (ext4_test_mount_flag(inode->i_sb, EXT4_MF_FC_INELIGIBLE))
>>   		return;
>>   
>> -- 
>> 2.31.1
>>