linux-kernel - Re: [f2fs-dev] [PATCH 3/6] f2fs: do not expose unwritten blocks to user by DIO

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Message-ID: <YdXin0epwgAX295L@google.com>
Date:   Wed, 5 Jan 2022 10:25:35 -0800
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     Chao Yu <chao@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH 3/6] f2fs: do not expose unwritten blocks to
 user by DIO

On 01/05, Chao Yu wrote:
> On 2022/1/5 5:24, Jaegeuk Kim wrote:
> > DIO preallocates physical blocks before writing data, but if an error occurrs
> > or power-cut happens, we can see block contents from the disk. This patch tries
> > to fix it by 1) turning to buffered writes for DIO into holes, 2) truncating
> > unwritten blocks from error or power-cut.
> > 
> > Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
> 
> Reviewed-by: Chao Yu <chao@...nel.org>

Thank you for the review tho, I can't ruin the one month git history. Please
chime in if there's any bug in the patch.

> 
> Thanks,