OK to me.
>
>
>> On 10/13, Yunlong Song wrote:
>> This can help us to debug on some corner case.
>>
>> Signed-off-by: Yunlong Song <yunlong.song@xxxxxxxxxx>
>> Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
>> ---
>> fs/f2fs/gc.c | 6 +++++-
>> 1 file changed, 5 insertions(+), 1 deletion(-)
>>
>> diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
>> index 197ebf4..2b03202 100644
>> --- a/fs/f2fs/gc.c
>> +++ b/fs/f2fs/gc.c
>> @@ -986,6 +986,7 @@ int f2fs_gc(struct f2fs_sb_info *sbi, bool sync,
>> .ilist = LIST_HEAD_INIT(gc_list.ilist),
>> .iroot = RADIX_TREE_INIT(GFP_NOFS),
>> };
>> + bool need_fggc = false;
>>
>> trace_f2fs_gc_begin(sbi->sb, sync, background,
>> get_pages(sbi, F2FS_DIRTY_NODES),
>> @@ -1018,8 +1019,10 @@ int f2fs_gc(struct f2fs_sb_info *sbi, bool sync,
>> if (ret)
>> goto stop;
>> }
>> - if (has_not_enough_free_secs(sbi, 0, 0))
>> + if (has_not_enough_free_secs(sbi, 0, 0)) {
>> gc_type = FG_GC;
>> + need_fggc = true;
>> + }
>> }
>>
>> /* f2fs_balance_fs doesn't need to do BG_GC in critical path. */
>> @@ -1028,6 +1031,7 @@ int f2fs_gc(struct f2fs_sb_info *sbi, bool sync,
>> goto stop;
>> }
>> if (!__get_victim(sbi, &segno, gc_type)) {
>> + f2fs_bug_on(sbi, !total_freed && need_fggc);
>
> Just like this?
>
> f2fs_bug_on(sbi, !total_freed && !sync && gc_type == FG_GC)；
Agree
>
>> ret = -ENODATA;
>> goto stop;
>> }
>> --
>> 1.8.5.2
