diff options
| -rw-r--r-- | block/blk-throttle.c | 10 | ||||
| -rw-r--r-- | block/cfq-iosched.c | 10 | ||||
| -rw-r--r-- | drivers/block/Makefile | 2 | ||||
| -rw-r--r-- | drivers/block/aoe/Makefile | 2 | ||||
| -rw-r--r-- | drivers/block/cciss.c | 2 | ||||
| -rw-r--r-- | drivers/block/loop.c | 3 | ||||
| -rw-r--r-- | drivers/cdrom/cdrom.c | 3 | ||||
| -rw-r--r-- | kernel/trace/blktrace.c | 7 |
8 files changed, 31 insertions, 8 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 381b09bb562..a89043a3caa 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -168,7 +168,15 @@ static struct throtl_grp * throtl_find_alloc_tg(struct throtl_data *td, * tree of blkg (instead of traversing through hash list all * the time. */ - tg = tg_of_blkg(blkiocg_lookup_group(blkcg, key)); + + /* + * This is the common case when there are no blkio cgroups. + * Avoid lookup in this case + */ + if (blkcg == &blkio_root_cgroup) + tg = &td->root_tg; + else + tg = tg_of_blkg(blkiocg_lookup_group(blkcg, key)); /* Fill in device details for root group */ if (tg && !tg->blkg.dev && bdi->dev && dev_name(bdi->dev)) { diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 501ffdf0399..7be4c795962 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -599,7 +599,7 @@ cfq_group_slice(struct cfq_data *cfqd, struct cfq_group *cfqg) } static inline unsigned -cfq_scaled_group_slice(struct cfq_data *cfqd, struct cfq_queue *cfqq) +cfq_scaled_cfqq_slice(struct cfq_data *cfqd, struct cfq_queue *cfqq) { unsigned slice = cfq_prio_to_slice(cfqd, cfqq); if (cfqd->cfq_latency) { @@ -631,7 +631,7 @@ cfq_scaled_group_slice(struct cfq_data *cfqd, struct cfq_queue *cfqq) static inline void cfq_set_prio_slice(struct cfq_data *cfqd, struct cfq_queue *cfqq) { - unsigned slice = cfq_scaled_group_slice(cfqd, cfqq); + unsigned slice = cfq_scaled_cfqq_slice(cfqd, cfqq); cfqq->slice_start = jiffies; cfqq->slice_end = jiffies + slice; @@ -1671,7 +1671,7 @@ __cfq_slice_expired(struct cfq_data *cfqd, struct cfq_queue *cfqq, */ if (timed_out) { if (cfq_cfqq_slice_new(cfqq)) - cfqq->slice_resid = cfq_scaled_group_slice(cfqd, cfqq); + cfqq->slice_resid = cfq_scaled_cfqq_slice(cfqd, cfqq); else cfqq->slice_resid = cfqq->slice_end - jiffies; cfq_log_cfqq(cfqd, cfqq, "resid=%ld", cfqq->slice_resid); @@ -3432,6 +3432,10 @@ static bool cfq_should_wait_busy(struct cfq_data *cfqd, struct cfq_queue *cfqq) { struct cfq_io_context *cic = cfqd->active_cic; + /* If the queue already has requests, don't wait */ + if (!RB_EMPTY_ROOT(&cfqq->sort_list)) + return false; + /* If there are other queues in the group, don't wait */ if (cfqq->cfqg->nr_cfqq > 1) return false; diff --git a/drivers/block/Makefile b/drivers/block/Makefile index d7f463d6312..40528ba56d1 100644 --- a/drivers/block/Makefile +++ b/drivers/block/Makefile @@ -39,4 +39,4 @@ obj-$(CONFIG_XEN_BLKDEV_FRONTEND) += xen-blkfront.o obj-$(CONFIG_BLK_DEV_DRBD) += drbd/ obj-$(CONFIG_BLK_DEV_RBD) += rbd.o -swim_mod-objs := swim.o swim_asm.o +swim_mod-y := swim.o swim_asm.o diff --git a/drivers/block/aoe/Makefile b/drivers/block/aoe/Makefile index e76d997183c..06ea82cdf27 100644 --- a/drivers/block/aoe/Makefile +++ b/drivers/block/aoe/Makefile @@ -3,4 +3,4 @@ # obj-$(CONFIG_ATA_OVER_ETH) += aoe.o -aoe-objs := aoeblk.o aoechr.o aoecmd.o aoedev.o aoemain.o aoenet.o +aoe-y := aoeblk.o aoechr.o aoecmd.o aoedev.o aoemain.o aoenet.o diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 516d5bbec2b..9279272b373 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -2833,7 +2833,7 @@ static int cciss_revalidate(struct gendisk *disk) sector_t total_size; InquiryData_struct *inq_buff = NULL; - for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { + for (logvol = 0; logvol <= h->highest_lun; logvol++) { if (!h->drv[logvol]) continue; if (memcmp(h->drv[logvol]->LunID, drv->LunID, diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 44e18c073c4..49e6a545eb6 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1641,6 +1641,9 @@ out: static void loop_free(struct loop_device *lo) { + if (!lo->lo_queue->queue_lock) + lo->lo_queue->queue_lock = &lo->lo_queue->__queue_lock; + blk_cleanup_queue(lo->lo_queue); put_disk(lo->lo_disk); list_del(&lo->lo_list); diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index 14033a36bcd..e2c48a7eccf 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -409,7 +409,8 @@ int register_cdrom(struct cdrom_device_info *cdi) } ENSURE(drive_status, CDC_DRIVE_STATUS ); - ENSURE(media_changed, CDC_MEDIA_CHANGED); + if (cdo->check_events == NULL && cdo->media_changed == NULL) + *change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC); ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); ENSURE(lock_door, CDC_LOCK); ENSURE(select_speed, CDC_SELECT_SPEED); diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 153562d0b93..d95721f3370 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -138,6 +138,13 @@ void __trace_note_message(struct blk_trace *bt, const char *fmt, ...) !blk_tracer_enabled)) return; + /* + * If the BLK_TC_NOTIFY action mask isn't set, don't send any note + * message to the trace. + */ + if (!(bt->act_mask & BLK_TC_NOTIFY)) + return; + local_irq_save(flags); buf = per_cpu_ptr(bt->msg_data, smp_processor_id()); va_start(args, fmt); |