linux-ext4 - Re: [PATCH v3 06/10] ext4: enhance tracepoints during the folios writeback

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Message-ID: <jxtj25ptoel2l3723i26lxstemmvieejnql4iypinrejm5lvx5@72key7fyl3qi>
Date: Wed, 2 Jul 2025 16:20:21 +0200
From: Jan Kara <jack@...e.cz>
To: Zhang Yi <yi.zhang@...weicloud.com>
Cc: linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, tytso@....edu, adilger.kernel@...ger.ca, jack@...e.cz, 
	ojaswin@...ux.ibm.com, sashal@...nel.org, yi.zhang@...wei.com, libaokun1@...wei.com, 
	yukuai3@...wei.com, yangerkun@...wei.com
Subject: Re: [PATCH v3 06/10] ext4: enhance tracepoints during the folios
 writeback

On Tue 01-07-25 21:06:31, Zhang Yi wrote:
> From: Zhang Yi <yi.zhang@...wei.com>
> 
> After mpage_map_and_submit_extent() supports restarting handle if
> credits are insufficient during allocating blocks, it is more likely to
> exit the current mapping iteration and continue to process the current
> processing partially mapped folio again. The existing tracepoints are
> not sufficient to track this situation, so enhance the tracepoints to
> track the writeback position and the return value before and after
> submitting the folios.
> 
> Signed-off-by: Zhang Yi <yi.zhang@...wei.com>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR