diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/bsg.c | 2 | ||||
| -rw-r--r-- | block/cfq-iosched.c | 67 | ||||
| -rw-r--r-- | block/ll_rw_blk.c | 6 | ||||
| -rw-r--r-- | block/scsi_ioctl.c | 3 |
4 files changed, 49 insertions, 29 deletions
diff --git a/block/bsg.c b/block/bsg.c index 1ba9bc6d9a44..b571869928a8 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -1035,7 +1035,7 @@ static int __init bsg_init(void) dev_t devid; bsg_cmd_cachep = kmem_cache_create("bsg_cmd", - sizeof(struct bsg_command), 0, 0, NULL, NULL); + sizeof(struct bsg_command), 0, 0, NULL); if (!bsg_cmd_cachep) { printk(KERN_ERR "bsg: failed creating slab cache\n"); return -ENOMEM; diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 9755a3cfad26..d148ccbc36d1 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -92,7 +92,11 @@ struct cfq_data { struct cfq_queue *active_queue; struct cfq_io_context *active_cic; - struct cfq_queue *async_cfqq[IOPRIO_BE_NR]; + /* + * async queue for each priority case + */ + struct cfq_queue *async_cfqq[2][IOPRIO_BE_NR]; + struct cfq_queue *async_idle_cfqq; struct timer_list idle_class_timer; @@ -111,9 +115,6 @@ struct cfq_data { unsigned int cfq_slice_idle; struct list_head cic_list; - - sector_t new_seek_mean; - u64 new_seek_total; }; /* @@ -153,8 +154,6 @@ struct cfq_queue { /* various state flags, see below */ unsigned int flags; - - sector_t last_request_pos; }; enum cfqq_state_flags { @@ -1414,24 +1413,44 @@ out: return cfqq; } +static struct cfq_queue ** +cfq_async_queue_prio(struct cfq_data *cfqd, int ioprio_class, int ioprio) +{ + switch(ioprio_class) { + case IOPRIO_CLASS_RT: + return &cfqd->async_cfqq[0][ioprio]; + case IOPRIO_CLASS_BE: + return &cfqd->async_cfqq[1][ioprio]; + case IOPRIO_CLASS_IDLE: + return &cfqd->async_idle_cfqq; + default: + BUG(); + } +} + static struct cfq_queue * cfq_get_queue(struct cfq_data *cfqd, int is_sync, struct task_struct *tsk, gfp_t gfp_mask) { const int ioprio = task_ioprio(tsk); + const int ioprio_class = task_ioprio_class(tsk); + struct cfq_queue **async_cfqq = NULL; struct cfq_queue *cfqq = NULL; - if (!is_sync) - cfqq = cfqd->async_cfqq[ioprio]; + if (!is_sync) { + async_cfqq = cfq_async_queue_prio(cfqd, ioprio_class, ioprio); + cfqq = *async_cfqq; + } + if (!cfqq) cfqq = cfq_find_alloc_queue(cfqd, is_sync, tsk, gfp_mask); /* * pin the queue now that it's allocated, scheduler exit will prune it */ - if (!is_sync && !cfqd->async_cfqq[ioprio]) { + if (!is_sync && !(*async_cfqq)) { atomic_inc(&cfqq->ref); - cfqd->async_cfqq[ioprio] = cfqq; + *async_cfqq = cfqq; } atomic_inc(&cfqq->ref); @@ -1597,11 +1616,6 @@ cfq_update_io_seektime(struct cfq_data *cfqd, struct cfq_io_context *cic, else sdist = cic->last_request_pos - rq->sector; - if (!cic->seek_samples) { - cfqd->new_seek_total = (7*cic->seek_total + (u64)256*sdist) / 8; - cfqd->new_seek_mean = cfqd->new_seek_total / 256; - } - /* * Don't allow the seek distance to get too large from the * odd fragment, pagein, etc @@ -1737,7 +1751,6 @@ cfq_rq_enqueued(struct cfq_data *cfqd, struct cfq_queue *cfqq, cfq_update_idle_window(cfqd, cfqq, cic); cic->last_request_pos = rq->sector + rq->nr_sectors; - cfqq->last_request_pos = cic->last_request_pos; if (cfqq == cfqd->active_queue) { /* @@ -2042,11 +2055,24 @@ static void cfq_shutdown_timer_wq(struct cfq_data *cfqd) blk_sync_queue(cfqd->queue); } +static void cfq_put_async_queues(struct cfq_data *cfqd) +{ + int i; + + for (i = 0; i < IOPRIO_BE_NR; i++) { + if (cfqd->async_cfqq[0][i]) + cfq_put_queue(cfqd->async_cfqq[0][i]); + if (cfqd->async_cfqq[1][i]) + cfq_put_queue(cfqd->async_cfqq[1][i]); + if (cfqd->async_idle_cfqq) + cfq_put_queue(cfqd->async_idle_cfqq); + } +} + static void cfq_exit_queue(elevator_t *e) { struct cfq_data *cfqd = e->elevator_data; request_queue_t *q = cfqd->queue; - int i; cfq_shutdown_timer_wq(cfqd); @@ -2063,12 +2089,7 @@ static void cfq_exit_queue(elevator_t *e) __cfq_exit_single_io_context(cfqd, cic); } - /* - * Put the async queues - */ - for (i = 0; i < IOPRIO_BE_NR; i++) - if (cfqd->async_cfqq[i]) - cfq_put_queue(cfqd->async_cfqq[i]); + cfq_put_async_queues(cfqd); spin_unlock_irq(q->queue_lock); diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c index d7cadf304168..66056ca5e631 100644 --- a/block/ll_rw_blk.c +++ b/block/ll_rw_blk.c @@ -3698,13 +3698,13 @@ int __init blk_dev_init(void) panic("Failed to create kblockd\n"); request_cachep = kmem_cache_create("blkdev_requests", - sizeof(struct request), 0, SLAB_PANIC, NULL, NULL); + sizeof(struct request), 0, SLAB_PANIC, NULL); requestq_cachep = kmem_cache_create("blkdev_queue", - sizeof(request_queue_t), 0, SLAB_PANIC, NULL, NULL); + sizeof(request_queue_t), 0, SLAB_PANIC, NULL); iocontext_cachep = kmem_cache_create("blkdev_ioc", - sizeof(struct io_context), 0, SLAB_PANIC, NULL, NULL); + sizeof(struct io_context), 0, SLAB_PANIC, NULL); for_each_possible_cpu(i) INIT_LIST_HEAD(&per_cpu(blk_cpu_done, i)); diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 7bfebd574e55..d359a715bbc8 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -433,11 +433,10 @@ int sg_scsi_ioctl(struct file *file, struct request_queue *q, bytes = max(in_len, out_len); if (bytes) { - buffer = kmalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN); + buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN); if (!buffer) return -ENOMEM; - memset(buffer, 0, bytes); } rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_WAIT); |