4.14-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 @@ -1108,6 +1108,8 @@ 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);