diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index febcfbadcdfa..3bf2ce46fa09 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -461,8 +461,8 @@ static inline void __set_inuse(struct f2fs_sb_info *sbi,
 	struct free_segmap_info *free_i = FREE_I(sbi);
 	unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
 
-	set_bit(segno, free_i->free_segmap);
-	free_i->free_segments--;
+	if (!test_and_set_bit(segno, free_i->free_segmap))
+		free_i->free_segments--;
 	if (!test_and_set_bit(secno, free_i->free_secmap))
 		free_i->free_sections--;
 }