lr_super 2224 fs/ext4/ext4.h struct super_block *lr_super; lr_super 3057 fs/ext4/super.c sb = elr->lr_super; lr_super 3161 fs/ext4/super.c if (down_read_trylock(&elr->lr_super->s_umount)) { lr_super 3162 fs/ext4/super.c if (sb_start_write_trylock(elr->lr_super)) { lr_super 3171 fs/ext4/super.c sb_end_write(elr->lr_super); lr_super 3175 fs/ext4/super.c up_read((&elr->lr_super->s_umount)); lr_super 3319 fs/ext4/super.c elr->lr_super = sb;