{
struct queue_limits lim = {
.logical_block_size = bsize,
+ .features = BLK_FEAT_ROTATIONAL,
};
struct nfhd_device *dev;
int dev_id = id - NFHD_DEV_OFFSET;
goto out_cleanup_tags;
}
- blk_queue_flag_set(QUEUE_FLAG_NONROT, disk->queue);
disk->major = UBD_MAJOR;
disk->first_minor = n << UBD_SHIFT;
disk->minors = 1 << UBD_SHIFT;
static int __init simdisk_setup(struct simdisk *dev, int which,
struct proc_dir_entry *procdir)
{
+ struct queue_limits lim = {
+ .features = BLK_FEAT_ROTATIONAL,
+ };
char tmp[2] = { '0' + which, 0 };
int err;
spin_lock_init(&dev->lock);
dev->users = 0;
- dev->gd = blk_alloc_disk(NULL, NUMA_NO_NODE);
+ dev->gd = blk_alloc_disk(&lim, NUMA_NO_NODE);
if (IS_ERR(dev->gd)) {
err = PTR_ERR(dev->gd);
goto out;
QUEUE_FLAG_NAME(NOMERGES),
QUEUE_FLAG_NAME(SAME_COMP),
QUEUE_FLAG_NAME(FAIL_IO),
- QUEUE_FLAG_NAME(NONROT),
QUEUE_FLAG_NAME(IO_STAT),
QUEUE_FLAG_NAME(NOXMERGES),
QUEUE_FLAG_NAME(ADD_RANDOM),
return queue_var_show(queue_dma_alignment(q), page);
}
+static ssize_t queue_feature_store(struct request_queue *q, const char *page,
+ size_t count, unsigned int feature)
+{
+ struct queue_limits lim;
+ unsigned long val;
+ ssize_t ret;
+
+ ret = queue_var_store(&val, page, count);
+ if (ret < 0)
+ return ret;
+
+ lim = queue_limits_start_update(q);
+ if (val)
+ lim.features |= feature;
+ else
+ lim.features &= ~feature;
+ ret = queue_limits_commit_update(q, &lim);
+ if (ret)
+ return ret;
+ return count;
+}
+
+#define QUEUE_SYSFS_FEATURE(_name, _feature) \
+static ssize_t queue_##_name##_show(struct request_queue *q, char *page) \
+{ \
+ return sprintf(page, "%u\n", !!(q->limits.features & _feature)); \
+} \
+static ssize_t queue_##_name##_store(struct request_queue *q, \
+ const char *page, size_t count) \
+{ \
+ return queue_feature_store(q, page, count, _feature); \
+}
+
#define QUEUE_SYSFS_BIT_FNS(name, flag, neg) \
static ssize_t \
queue_##name##_show(struct request_queue *q, char *page) \
return ret; \
}
-QUEUE_SYSFS_BIT_FNS(nonrot, NONROT, 1);
+QUEUE_SYSFS_FEATURE(rotational, BLK_FEAT_ROTATIONAL)
QUEUE_SYSFS_BIT_FNS(random, ADD_RANDOM, 0);
QUEUE_SYSFS_BIT_FNS(iostats, IO_STAT, 0);
QUEUE_SYSFS_BIT_FNS(stable_writes, STABLE_WRITES, 0);
.show = queue_logical_block_size_show,
};
-QUEUE_RW_ENTRY(queue_nonrot, "rotational");
+QUEUE_RW_ENTRY(queue_rotational, "rotational");
QUEUE_RW_ENTRY(queue_iostats, "iostats");
QUEUE_RW_ENTRY(queue_random, "add_random");
QUEUE_RW_ENTRY(queue_stable_writes, "stable_writes");
&queue_write_zeroes_max_entry.attr,
&queue_zone_append_max_entry.attr,
&queue_zone_write_granularity_entry.attr,
- &queue_nonrot_entry.attr,
+ &queue_rotational_entry.attr,
&queue_zoned_entry.attr,
&queue_nr_zones_entry.attr,
&queue_max_open_zones_entry.attr,
static int fd_alloc_disk(int drive, int system)
{
+ struct queue_limits lim = {
+ .features = BLK_FEAT_ROTATIONAL,
+ };
struct gendisk *disk;
int err;
- disk = blk_mq_alloc_disk(&unit[drive].tag_set, NULL, NULL);
+ disk = blk_mq_alloc_disk(&unit[drive].tag_set, &lim, NULL);
if (IS_ERR(disk))
return PTR_ERR(disk);
struct queue_limits lim = {
.max_hw_sectors = aoe_maxsectors,
.io_opt = SZ_2M,
+ .features = BLK_FEAT_ROTATIONAL,
};
ulong flags;
int late = 0;
static int ataflop_alloc_disk(unsigned int drive, unsigned int type)
{
+ struct queue_limits lim = {
+ .features = BLK_FEAT_ROTATIONAL,
+ };
struct gendisk *disk;
- disk = blk_mq_alloc_disk(&unit[drive].tag_set, NULL, NULL);
+ disk = blk_mq_alloc_disk(&unit[drive].tag_set, &lim, NULL);
if (IS_ERR(disk))
return PTR_ERR(disk);
strscpy(disk->disk_name, buf, DISK_NAME_LEN);
set_capacity(disk, rd_size * 2);
- /* Tell the block layer that this is not a rotational device */
- blk_queue_flag_set(QUEUE_FLAG_NONROT, disk->queue);
blk_queue_flag_set(QUEUE_FLAG_SYNCHRONOUS, disk->queue);
blk_queue_flag_set(QUEUE_FLAG_NOWAIT, disk->queue);
err = add_disk(disk);
* connect.
*/
.max_hw_sectors = DRBD_MAX_BIO_SIZE_SAFE >> 8,
- .features = BLK_FEAT_WRITE_CACHE | BLK_FEAT_FUA,
+ .features = BLK_FEAT_WRITE_CACHE | BLK_FEAT_FUA |
+ BLK_FEAT_ROTATIONAL,
};
device = minor_to_device(minor);
static int floppy_alloc_disk(unsigned int drive, unsigned int type)
{
struct queue_limits lim = {
- .max_hw_sectors = 64,
+ .max_hw_sectors = 64,
+ .features = BLK_FEAT_ROTATIONAL,
};
struct gendisk *disk;
lim.logical_block_size = bsize;
lim.physical_block_size = bsize;
lim.io_min = bsize;
- lim.features &= ~BLK_FEAT_WRITE_CACHE;
+ lim.features &= ~(BLK_FEAT_WRITE_CACHE | BLK_FEAT_ROTATIONAL);
if (file->f_op->fsync && !(lo->lo_flags & LO_FLAGS_READ_ONLY))
lim.features |= BLK_FEAT_WRITE_CACHE;
- if (!backing_bdev || bdev_nonrot(backing_bdev))
- blk_queue_flag_set(QUEUE_FLAG_NONROT, lo->lo_queue);
- else
- blk_queue_flag_clear(QUEUE_FLAG_NONROT, lo->lo_queue);
+ if (backing_bdev && !bdev_nonrot(backing_bdev))
+ lim.features |= BLK_FEAT_ROTATIONAL;
loop_config_discard(lo, &lim);
return queue_limits_commit_update(lo->lo_queue, &lim);
}
goto start_service_thread;
/* Set device limits. */
- blk_queue_flag_set(QUEUE_FLAG_NONROT, dd->queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, dd->queue);
dma_set_max_seg_size(&dd->pdev->dev, 0x400000);
set_capacity(disk, size >> SECTOR_SHIFT);
set_disk_ro(disk, 1);
- blk_queue_flag_set(QUEUE_FLAG_NONROT, disk->queue);
-
err = add_disk(disk);
if (err)
goto out_cleanup_disk;
goto out_err_disk;
}
- /*
- * Tell the block layer that we are not a rotational device
- */
- blk_queue_flag_set(QUEUE_FLAG_NONROT, disk->queue);
-
mutex_init(&nbd->config_lock);
refcount_set(&nbd->config_refs, 0);
/*
}
nullb->q->queuedata = nullb;
- blk_queue_flag_set(QUEUE_FLAG_NONROT, nullb->q);
rv = ida_alloc(&nullb_indexes, GFP_KERNEL);
if (rv < 0)
struct queue_limits lim = {
.max_hw_sectors = PACKET_MAX_SECTORS,
.logical_block_size = CD_FRAMESIZE,
+ .features = BLK_FEAT_ROTATIONAL,
};
int idx;
int ret = -ENOMEM;
.max_segments = -1,
.max_segment_size = dev->bounce_size,
.dma_alignment = dev->blk_size - 1,
- .features = BLK_FEAT_WRITE_CACHE,
+ .features = BLK_FEAT_WRITE_CACHE |
+ BLK_FEAT_ROTATIONAL,
};
struct gendisk *gendisk;
disk->fops = &rbd_bd_ops;
disk->private_data = rbd_dev;
- blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
- /* QUEUE_FLAG_ADD_RANDOM is off by default for blk-mq */
-
if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC))
blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q);
if (dev->access_mode == RNBD_ACCESS_RO)
set_disk_ro(dev->gd, true);
- /*
- * Network device does not need rotational
- */
- blk_queue_flag_set(QUEUE_FLAG_NONROT, dev->queue);
err = add_disk(dev->gd);
if (err)
put_disk(dev->gd);
.seg_boundary_mask = PAGE_SIZE - 1,
.max_segment_size = PAGE_SIZE,
.max_segments = port->ring_cookies,
+ .features = BLK_FEAT_ROTATIONAL,
};
struct request_queue *q;
struct gendisk *g;
static int swim_floppy_init(struct swim_priv *swd)
{
+ struct queue_limits lim = {
+ .features = BLK_FEAT_ROTATIONAL,
+ };
int err;
int drive;
struct swim __iomem *base = swd->base;
goto exit_put_disks;
swd->unit[drive].disk =
- blk_mq_alloc_disk(&swd->unit[drive].tag_set, NULL,
+ blk_mq_alloc_disk(&swd->unit[drive].tag_set, &lim,
&swd->unit[drive]);
if (IS_ERR(swd->unit[drive].disk)) {
blk_mq_free_tag_set(&swd->unit[drive].tag_set);
static int swim3_attach(struct macio_dev *mdev,
const struct of_device_id *match)
{
+ struct queue_limits lim = {
+ .features = BLK_FEAT_ROTATIONAL,
+ };
struct floppy_state *fs;
struct gendisk *disk;
int rc;
if (rc)
goto out_unregister;
- disk = blk_mq_alloc_disk(&fs->tag_set, NULL, fs);
+ disk = blk_mq_alloc_disk(&fs->tag_set, &lim, fs);
if (IS_ERR(disk)) {
rc = PTR_ERR(disk);
goto out_free_tag_set;
static void ublk_dev_param_basic_apply(struct ublk_device *ub)
{
- struct request_queue *q = ub->ub_disk->queue;
const struct ublk_param_basic *p = &ub->params.basic;
- if (p->attrs & UBLK_ATTR_ROTATIONAL)
- blk_queue_flag_clear(QUEUE_FLAG_NONROT, q);
- else
- blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
-
if (p->attrs & UBLK_ATTR_READ_ONLY)
set_disk_ro(ub->ub_disk, true);
lim.features |= BLK_FEAT_FUA;
}
+ if (ub->params.basic.attrs & UBLK_ATTR_ROTATIONAL)
+ lim.features |= BLK_FEAT_ROTATIONAL;
+
if (wait_for_completion_interruptible(&ub->completion) != 0)
return -EINTR;
static int virtblk_probe(struct virtio_device *vdev)
{
struct virtio_blk *vblk;
- struct queue_limits lim = { };
+ struct queue_limits lim = {
+ .features = BLK_FEAT_ROTATIONAL,
+ };
int err, index;
unsigned int queue_depth;
err = PTR_ERR(gd);
goto out_free_tag_set;
}
- blk_queue_flag_set(QUEUE_FLAG_VIRT, gd->queue);
strcpy(gd->disk_name, DEV_NAME);
ptr = encode_disk_name(gd->disk_name + sizeof(DEV_NAME) - 1, offset);
/* Actual capacity set using sysfs (/sys/block/zram<id>/disksize */
set_capacity(zram->disk, 0);
- /* zram devices sort of resembles non-rotational disks */
- blk_queue_flag_set(QUEUE_FLAG_NONROT, zram->disk->queue);
blk_queue_flag_set(QUEUE_FLAG_SYNCHRONOUS, zram->disk->queue);
blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, zram->disk->queue);
ret = device_add_disk(NULL, zram->disk, zram_disk_groups);
.max_segments = 1,
/* set a large max size to get most from DMA */
.max_segment_size = 0x40000,
+ .features = BLK_FEAT_ROTATIONAL,
};
int err;
d->disk->minors = BCACHE_MINORS;
d->disk->fops = ops;
d->disk->private_data = d;
-
- blk_queue_flag_set(QUEUE_FLAG_NONROT, d->disk->queue);
return 0;
out_bioset_exit:
return false;
}
-static int device_is_rotational(struct dm_target *ti, struct dm_dev *dev,
- sector_t start, sector_t len, void *data)
-{
- return !bdev_nonrot(dev->bdev);
-}
-
static int device_is_not_random(struct dm_target *ti, struct dm_dev *dev,
sector_t start, sector_t len, void *data)
{
if (dm_table_any_dev_attr(t, device_dax_write_cache_enabled, NULL))
dax_write_cache(t->md->dax_dev, true);
- /* Ensure that all underlying devices are non-rotational. */
- if (dm_table_any_dev_attr(t, device_is_rotational, NULL))
- blk_queue_flag_clear(QUEUE_FLAG_NONROT, q);
- else
- blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
-
/*
* Some devices don't use blk_integrity but still want stable pages
* because they do their own checksumming.
if (!mddev_is_dm(mddev)) {
struct request_queue *q = mddev->gendisk->queue;
- bool nonrot = true;
- rdev_for_each(rdev, mddev) {
- if (rdev->raid_disk >= 0 && !bdev_nonrot(rdev->bdev)) {
- nonrot = false;
- break;
- }
- }
- if (mddev->degraded)
- nonrot = false;
- if (nonrot)
- blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
- else
- blk_queue_flag_clear(QUEUE_FLAG_NONROT, q);
blk_queue_flag_set(QUEUE_FLAG_IO_STAT, q);
/* Set the NOWAIT flags if all underlying devices support it */
blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, mq->queue);
blk_queue_rq_timeout(mq->queue, 60 * HZ);
- blk_queue_flag_set(QUEUE_FLAG_NONROT, mq->queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, mq->queue);
dma_set_max_seg_size(mmc_dev(host), queue_max_segment_size(mq->queue));
spin_lock_init(&new->queue_lock);
INIT_LIST_HEAD(&new->rq_list);
- blk_queue_flag_set(QUEUE_FLAG_NONROT, new->rq);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, new->rq);
gd->queue = new->rq;
btt->btt_disk->fops = &btt_fops;
btt->btt_disk->private_data = btt;
- blk_queue_flag_set(QUEUE_FLAG_NONROT, btt->btt_disk->queue);
blk_queue_flag_set(QUEUE_FLAG_SYNCHRONOUS, btt->btt_disk->queue);
set_capacity(btt->btt_disk, btt->nlba * btt->sector_size >> 9);
}
pmem->virt_addr = addr;
- blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
blk_queue_flag_set(QUEUE_FLAG_SYNCHRONOUS, q);
if (pmem->pfn_flags & PFN_MAP)
blk_queue_flag_set(QUEUE_FLAG_DAX, q);
if (ctrl->opts && ctrl->opts->data_digest)
blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, ns->queue);
- blk_queue_flag_set(QUEUE_FLAG_NONROT, ns->queue);
if (ctrl->ops->supports_pci_p2pdma &&
ctrl->ops->supports_pci_p2pdma(ctrl))
blk_queue_flag_set(QUEUE_FLAG_PCI_P2PDMA, ns->queue);
sprintf(head->disk->disk_name, "nvme%dn%d",
ctrl->subsys->instance, head->instance);
- blk_queue_flag_set(QUEUE_FLAG_NONROT, head->disk->queue);
blk_queue_flag_set(QUEUE_FLAG_NOWAIT, head->disk->queue);
blk_queue_flag_set(QUEUE_FLAG_IO_STAT, head->disk->queue);
/*
blk_mq_free_tag_set(&block->tag_set);
return PTR_ERR(gdp);
}
- blk_queue_flag_set(QUEUE_FLAG_NONROT, gdp->queue);
/* Initialize gendisk structure. */
gdp->major = DASD_MAJOR;
goto out_tag;
}
rq = bdev->rq = bdev->gendisk->queue;
- blk_queue_flag_set(QUEUE_FLAG_NONROT, rq);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, rq);
bdev->gendisk->private_data = scmdev;
rcu_read_unlock();
if (rot == 1) {
- blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
+ lim->features &= ~BLK_FEAT_ROTATIONAL;
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, q);
}
* cause this to be updated correctly and any device which
* doesn't support it should be treated as rotational.
*/
- blk_queue_flag_clear(QUEUE_FLAG_NONROT, q);
+ lim.features |= BLK_FEAT_ROTATIONAL;
blk_queue_flag_set(QUEUE_FLAG_ADD_RANDOM, q);
if (scsi_device_supports_vpd(sdp)) {
/* supports passing on the FUA bit */
BLK_FEAT_FUA = (1u << 1),
+
+ /* rotational device (hard drive or floppy) */
+ BLK_FEAT_ROTATIONAL = (1u << 2),
};
/*
* Flags automatically inherited when stacking limits.
*/
#define BLK_FEAT_INHERIT_MASK \
- (BLK_FEAT_WRITE_CACHE | BLK_FEAT_FUA)
-
+ (BLK_FEAT_WRITE_CACHE | BLK_FEAT_FUA | BLK_FEAT_ROTATIONAL)
/* internal flags in queue_limits.flags */
enum {
#define QUEUE_FLAG_NOMERGES 3 /* disable merge attempts */
#define QUEUE_FLAG_SAME_COMP 4 /* complete on same CPU-group */
#define QUEUE_FLAG_FAIL_IO 5 /* fake timeout */
-#define QUEUE_FLAG_NONROT 6 /* non-rotational device (SSD) */
-#define QUEUE_FLAG_VIRT QUEUE_FLAG_NONROT /* paravirt device */
#define QUEUE_FLAG_IO_STAT 7 /* do disk/partitions IO accounting */
#define QUEUE_FLAG_NOXMERGES 9 /* No extended merges */
#define QUEUE_FLAG_ADD_RANDOM 10 /* Contributes to random pool */
#define blk_queue_nomerges(q) test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags)
#define blk_queue_noxmerges(q) \
test_bit(QUEUE_FLAG_NOXMERGES, &(q)->queue_flags)
-#define blk_queue_nonrot(q) test_bit(QUEUE_FLAG_NONROT, &(q)->queue_flags)
+#define blk_queue_nonrot(q) ((q)->limits.features & BLK_FEAT_ROTATIONAL)
#define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags)
#define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags)
#define blk_queue_zone_resetall(q) \
projects / linux-2.6-block.git / commitdiff