Symbol: EXT4_MOUNT_NO_MBCACHE
fs/ext4/super.c
1932
{Opt_nombcache, EXT4_MOUNT_NO_MBCACHE, MOPT_SET},
fs/ext4/super.c
6642
if ((sbi->s_mount_opt ^ old_opts.s_mount_opt) & EXT4_MOUNT_NO_MBCACHE) {