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

From: Chao Yu
Date: Wed Jan 05 2022 - 08:19:25 EST


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@xxxxxxxxxx>

Reviewed-by: Chao Yu <chao@xxxxxxxxxx>

Thanks,