f2fs: allow to mount if cap is 100

Don't block mounting the partition, if cap is 100%.
Reviewed-by: Chao Yu <chao@kernel.org>
Reviewed-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/segment.c

@@ -904,6 +904,9 @@ int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable)
 {
 	int ovp_hole_segs =
 		(overprovision_segments(sbi) - reserved_segments(sbi));
+
+	if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
+		return 0;
 	if (unusable > F2FS_OPTION(sbi).unusable_cap)
 		return -EAGAIN;
 	if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK) &&