f2fs: fix count of seg_freed to make sec_freed correct

When sbi->segs_per_sec > 1, and if some segno has 0 valid blocks before
gc starts, do_garbage_collect will skip counting seg_freed++, and this
will cause seg_freed < sbi->segs_per_sec and finally skip sec_freed++.

Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index c96e7c6..9707773 100644 (file)
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1140,9 +1140,9 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
                                        GET_SUM_BLOCK(sbi, segno));
                f2fs_put_page(sum_page, 0);
 
-               if (get_valid_blocks(sbi, segno, false) == 0 ||
-                               !PageUptodate(sum_page) ||
-                               unlikely(f2fs_cp_error(sbi)))
+               if (get_valid_blocks(sbi, segno, false) == 0)
+                       goto freed;
+               if (!PageUptodate(sum_page) || unlikely(f2fs_cp_error(sbi)))
                        goto next;
 
                sum = page_address(sum_page);
@@ -1170,6 +1170,7 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
 
                stat_inc_seg_count(sbi, type, gc_type);
 
+freed:
                if (gc_type == FG_GC &&
                                get_valid_blocks(sbi, segno, false) == 0)
                        seg_freed++;