linux-kernel - Re: [PATCH 3/4] f2fs: remain nat cache entries for further free nid allocation

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Message-ID: <CAKYAXd8CBoG7=FL8yuJ3gfp9Les5i1nGmG1AqeaF0wnzOKJOoA@mail.gmail.com>
Date:	Tue, 26 Mar 2013 09:49:26 +0900
From:	Namjae Jeon <linkinjeon@...il.com>
To:	Jaegeuk Kim <jaegeuk.kim@...sung.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [PATCH 3/4] f2fs: remain nat cache entries for further free nid allocation

2013/3/25, Jaegeuk Kim <jaegeuk.kim@...sung.com>:
> In the checkpoint flow, the f2fs investigates the total nat cache entries.
> Previously, if an entry has NULL_ADDR, f2fs drops the entry and adds the
> obsolete nid to the free nid list.
> However, this free nid will be reused sooner, resulting in its nat entry
> miss.
> In order to avoid this, we don't need to drop the nat cache entry at this
> moment.
>
> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@...sung.com>
Looks good to me.
Reviewed-by: Namjae Jeon <namjae.jeon@...sung.com>

Thanks~
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