> int __sb_start_write(struct super_block *sb, int level, bool wait)
> {
> - int ret = 1;
> + if (!wait)
> + return percpu_down_read_trylock(sb->s_writers.rw_sem + level-1);
>
> + percpu_down_read(sb->s_writers.rw_sem + level-1);
> + return 1;
> }
> EXPORT_SYMBOL(__sb_start_write);
Please split the function into __sb_start_write and
__sb_start_write_trylock while you're at it..
