Re: [PATCH v3 2/4] f2fs: Fix root reserved on remount

From: Chao Yu
Date: Mon Jun 03 2019 - 06:38:22 EST

On 2019/5/30 8:49, Daniel Rosenberg wrote:
> On a remount, you can currently set root reserved if it was not
> previously set. This can cause an underflow if reserved has been set to
> a very high value, since then root reserved + current reserved could be
> greater than user_block_count. inc_valid_block_count later subtracts out
> these values from user_block_count, causing an underflow.
> Signed-off-by: Daniel Rosenberg <drosen@xxxxxxxxxx>

Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>