linux-ext4 - Re: [PATCH v2] ext4: lost matching-pair of trace in ext4

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Message-Id: <20200708102209.0399EA405C@b06wcsmtp001.portsmouth.uk.ibm.com>
Date:   Wed, 8 Jul 2020 15:52:08 +0530
From:   Ritesh Harjani <riteshh@...ux.ibm.com>
To:     Yi Zhuang <zhuangyi1@...wei.com>, tytso@....edu,
        adilger.kernel@...ger.ca
Cc:     linux-ext4@...r.kernel.org
Subject: Re: [PATCH v2] ext4: lost matching-pair of trace in ext4_unlink



On 6/29/20 5:56 PM, Yi Zhuang wrote:
> If dquot_initialize() return non-zero and trace of ext4_unlink_enter/exit
> enabled then the matching-pair of trace_exit will lost in log.
> 
> v2:
> Change the new label to be "out_trace:", which makes it more clear that
> it is undoing the "trace" part of the code. At the same time, fix other
> similar problems in this function:
> 
> 	bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL);
> 	if (IS_ERR(bh))
> 		return PTR_ERR(bh);
> 	if (!bh)
> 		goto end_unlink;
> 
> According to Andreas' suggestion, split up the "end_unlink:" label becomes
> two separate labels, and then remove the "if (handle)" check, and then
> use out_bh: before the handle is started.
> 
> Signed-off-by: Yi Zhuang <zhuangyi1@...wei.com>

Nice cleanup. Feel free to add:
Reviewed-by: Ritesh Harjani <riteshh@...ux.ibm.com>