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    Subject[PATCH 4.16 181/272] f2fs: fix to clear CP_TRIMMED_FLAG
    Date
    4.16-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Chao Yu <yuchao0@huawei.com>

    [ Upstream commit cd36d7a17f9da68be9aa67185ba3ad7969934a19 ]

    Once CP_TRIMMED_FLAG is set, after a reboot, we will never issue discard
    before LBA becomes invalid again, fix it by clearing the flag in
    checkpoint without CP_TRIMMED reason.

    Fixes: 1f43e2ad7bff ("f2fs: introduce CP_TRIMMED_FLAG to avoid unneeded discard")
    Signed-off-by: Chao Yu <yuchao0@huawei.com>
    Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
    Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    fs/f2fs/checkpoint.c | 2 ++
    1 file changed, 2 insertions(+)

    --- a/fs/f2fs/checkpoint.c
    +++ b/fs/f2fs/checkpoint.c
    @@ -1136,6 +1136,8 @@ static void update_ckpt_flags(struct f2f

    if (cpc->reason & CP_TRIMMED)
    __set_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
    + else
    + __clear_ckpt_flags(ckpt, CP_TRIMMED_FLAG);

    if (cpc->reason & CP_UMOUNT)
    __set_ckpt_flags(ckpt, CP_UMOUNT_FLAG);

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