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This patchset expands traditional CFQ scheduler in order to support cgroups, and improves old version. Improvements are as following. * Modularizing our new CFQ scheduler. The expanded CFQ scheduler is registered/unregistered as new I/O elevator scheduler called "cfq-cgroups". By this, the traditional CFQ scheduler, which does not handle cgroups, and our new CFQ

This patchset expands traditional CFQ scheduler in order to support cgroups, and improves old version. Improvements are as following. * Modularizing our new CFQ scheduler. The expanded CFQ scheduler is registered/unregistered as new I/O elevator scheduler called "cfq-cgroups". By this, the traditional CFQ scheduler, which does not handle cgroups, and our new CFQ

..._end(q); blk_add_trace_msg(q, "elv switch: %s", e->type->elevator_name); return 0; fail_register: /* * switch failed, exit the new io scheduler and reattach the old * one again (along with re-adding the sysfs dir) */ - elevator_exit(e); + elevator_exit(q, e); elv_register_queue(q); elv_quiesce_end(q); return err; } /* * Switch this queue to the given IO scheduler. */ @@ -1020,32 +1084,30 @@ ssize_t elv_iosched_show(struct request_queue *q, char *name) else len += sprintf(name+len, "%s ", __e->elevator_name); } spin_unlock(&e...

..._end(q); blk_add_trace_msg(q, "elv switch: %s", e->type->elevator_name); return 0; fail_register: /* * switch failed, exit the new io scheduler and reattach the old * one again (along with re-adding the sysfs dir) */ - elevator_exit(e); + elevator_exit(q, e); elv_register_queue(q); elv_quiesce_end(q); return err; } /* * Switch this queue to the given IO scheduler. */ @@ -1020,32 +1084,30 @@ ssize_t elv_iosched_show(struct request_queue *q, char *name) else len += sprintf(name+len, "%s ", __e->elevator_name); } spin_unlock(&e...