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block: remove BLK_MQ_F_SHOULD_MERGE

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BLK_MQ_F_SHOULD_MERGE is set for all tag_sets except those that purely
process passthrough commands (bsg-lib, ufs tmf, various nvme admin
queues) and thus don't even check the flag.  Remove it to simplify the
driver interface.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20241219060214.1928848-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2024-12-19 07:01:59 +01:00 committed by Jens Axboe
parent 9bc1e897a8
commit cc76ace465
34 changed files with 15 additions and 43 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

1
arch/um/drivers/ubd_kern.c
View file

@ -865,7 +865,6 @@ static int ubd_add(int n, char **error_out)
ubd_dev->tag_set.ops = &ubd_mq_ops;
ubd_dev->tag_set.queue_depth = 64;
ubd_dev->tag_set.numa_node = NUMA_NO_NODE;
ubd_dev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
ubd_dev->tag_set.driver_data = ubd_dev;
ubd_dev->tag_set.nr_hw_queues = 1;

1
block/blk-mq-debugfs.c
View file

@ -181,7 +181,6 @@ static const char *const alloc_policy_name[] = {
#define HCTX_FLAG_NAME(name) [ilog2(BLK_MQ_F_##name)] = #name
static const char *const hctx_flag_name[] = {
HCTX_FLAG_NAME(SHOULD_MERGE),
HCTX_FLAG_NAME(TAG_QUEUE_SHARED),
HCTX_FLAG_NAME(STACKING),
HCTX_FLAG_NAME(TAG_HCTX_SHARED),

3
block/blk-mq-sched.c
View file

@ -351,8 +351,7 @@ bool blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio,
ctx = blk_mq_get_ctx(q);
hctx = blk_mq_map_queue(q, bio->bi_opf, ctx);
type = hctx->type;
if (!(hctx->flags & BLK_MQ_F_SHOULD_MERGE) ||
list_empty_careful(&ctx->rq_lists[type]))
if (list_empty_careful(&ctx->rq_lists[type]))
goto out_put;
/* default per sw-queue merge */

1
drivers/block/amiflop.c
View file

@ -1819,7 +1819,6 @@ static int fd_alloc_drive(int drive)
unit[drive].tag_set.nr_maps = 1;
unit[drive].tag_set.queue_depth = 2;
unit[drive].tag_set.numa_node = NUMA_NO_NODE;
unit[drive].tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
if (blk_mq_alloc_tag_set(&unit[drive].tag_set))
goto out_cleanup_trackbuf;

1
drivers/block/aoe/aoeblk.c
View file

@ -368,7 +368,6 @@ aoeblk_gdalloc(void *vp)
set->nr_hw_queues = 1;
set->queue_depth = 128;
set->numa_node = NUMA_NO_NODE;
set->flags = BLK_MQ_F_SHOULD_MERGE;
err = blk_mq_alloc_tag_set(set);
if (err) {
pr_err("aoe: cannot allocate tag set for %ld.%d\n",

1
drivers/block/ataflop.c
View file

@ -2088,7 +2088,6 @@ static int __init atari_floppy_init (void)
unit[i].tag_set.nr_maps = 1;
unit[i].tag_set.queue_depth = 2;
unit[i].tag_set.numa_node = NUMA_NO_NODE;
unit[i].tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
ret = blk_mq_alloc_tag_set(&unit[i].tag_set);
if (ret)
goto err;

1
drivers/block/floppy.c
View file

@ -4596,7 +4596,6 @@ static int __init do_floppy_init(void)
tag_sets[drive].nr_maps = 1;
tag_sets[drive].queue_depth = 2;
tag_sets[drive].numa_node = NUMA_NO_NODE;
tag_sets[drive].flags = BLK_MQ_F_SHOULD_MERGE;
err = blk_mq_alloc_tag_set(&tag_sets[drive]);
if (err)
goto out_put_disk;

3
drivers/block/loop.c
View file

@ -2023,8 +2023,7 @@ static int loop_add(int i)
lo->tag_set.queue_depth = hw_queue_depth;
lo->tag_set.numa_node = NUMA_NO_NODE;
lo->tag_set.cmd_size = sizeof(struct loop_cmd);
lo->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_STACKING |
BLK_MQ_F_NO_SCHED_BY_DEFAULT;
lo->tag_set.flags = BLK_MQ_F_STACKING | BLK_MQ_F_NO_SCHED_BY_DEFAULT;
lo->tag_set.driver_data = lo;
err = blk_mq_alloc_tag_set(&lo->tag_set);

1
drivers/block/mtip32xx/mtip32xx.c
View file

@ -3416,7 +3416,6 @@ static int mtip_block_initialize(struct driver_data *dd)
dd->tags.reserved_tags = 1;
dd->tags.cmd_size = sizeof(struct mtip_cmd);
dd->tags.numa_node = dd->numa_node;
dd->tags.flags = BLK_MQ_F_SHOULD_MERGE;
dd->tags.driver_data = dd;
dd->tags.timeout = MTIP_NCQ_CMD_TIMEOUT_MS;

3
drivers/block/nbd.c
View file

@ -1841,8 +1841,7 @@ static struct nbd_device *nbd_dev_add(int index, unsigned int refs)
nbd->tag_set.queue_depth = 128;
nbd->tag_set.numa_node = NUMA_NO_NODE;
nbd->tag_set.cmd_size = sizeof(struct nbd_cmd);
nbd->tag_set.flags = BLK_MQ_F_SHOULD_MERGE |
BLK_MQ_F_BLOCKING;
nbd->tag_set.flags = BLK_MQ_F_BLOCKING;
nbd->tag_set.driver_data = nbd;
INIT_WORK(&nbd->remove_work, nbd_dev_remove_work);
nbd->backend = NULL;

2
drivers/block/null_blk/main.c
View file

@ -1791,7 +1791,6 @@ static int null_init_global_tag_set(void)
tag_set.nr_hw_queues = g_submit_queues;
tag_set.queue_depth = g_hw_queue_depth;
tag_set.numa_node = g_home_node;
tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
if (g_no_sched)
tag_set.flags |= BLK_MQ_F_NO_SCHED;
if (g_shared_tag_bitmap)
@ -1817,7 +1816,6 @@ static int null_setup_tagset(struct nullb *nullb)
nullb->tag_set->nr_hw_queues = nullb->dev->submit_queues;
nullb->tag_set->queue_depth = nullb->dev->hw_queue_depth;
nullb->tag_set->numa_node = nullb->dev->home_node;
nullb->tag_set->flags = BLK_MQ_F_SHOULD_MERGE;
if (nullb->dev->no_sched)
nullb->tag_set->flags |= BLK_MQ_F_NO_SCHED;
if (nullb->dev->shared_tag_bitmap)

3
drivers/block/ps3disk.c
View file

@ -434,8 +434,7 @@ static int ps3disk_probe(struct ps3_system_bus_device *_dev)
ps3disk_identify(dev);
error = blk_mq_alloc_sq_tag_set(&priv->tag_set, &ps3disk_mq_ops, 1,
BLK_MQ_F_SHOULD_MERGE);
error = blk_mq_alloc_sq_tag_set(&priv->tag_set, &ps3disk_mq_ops, 1, 0);
if (error)
goto fail_teardown;

1
drivers/block/rbd.c
View file

@ -4964,7 +4964,6 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
rbd_dev->tag_set.ops = &rbd_mq_ops;
rbd_dev->tag_set.queue_depth = rbd_dev->opts->queue_depth;
rbd_dev->tag_set.numa_node = NUMA_NO_NODE;
rbd_dev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
rbd_dev->tag_set.nr_hw_queues = num_present_cpus();
rbd_dev->tag_set.cmd_size = sizeof(struct rbd_img_request);

3
drivers/block/rnbd/rnbd-clt.c
View file

@ -1209,8 +1209,7 @@ static int setup_mq_tags(struct rnbd_clt_session *sess)
tag_set->ops = &rnbd_mq_ops;
tag_set->queue_depth = sess->queue_depth;
tag_set->numa_node = NUMA_NO_NODE;
tag_set->flags = BLK_MQ_F_SHOULD_MERGE |
BLK_MQ_F_TAG_QUEUE_SHARED;
tag_set->flags = BLK_MQ_F_TAG_QUEUE_SHARED;
tag_set->cmd_size = sizeof(struct rnbd_iu) + RNBD_RDMA_SGL_SIZE;
/* for HCTX_TYPE_DEFAULT, HCTX_TYPE_READ, HCTX_TYPE_POLL */

2
drivers/block/sunvdc.c
View file

@ -829,7 +829,7 @@ static int probe_disk(struct vdc_port *port)
}
err = blk_mq_alloc_sq_tag_set(&port->tag_set, &vdc_mq_ops,
VDC_TX_RING_SIZE, BLK_MQ_F_SHOULD_MERGE);
VDC_TX_RING_SIZE, 0);
if (err)
return err;

2
drivers/block/swim.c
View file

@ -818,7 +818,7 @@ static int swim_floppy_init(struct swim_priv *swd)
for (drive = 0; drive < swd->floppy_count; drive++) {
err = blk_mq_alloc_sq_tag_set(&swd->unit[drive].tag_set,
&swim_mq_ops, 2, BLK_MQ_F_SHOULD_MERGE);
&swim_mq_ops, 2, 0);
if (err)
goto exit_put_disks;

3
drivers/block/swim3.c
View file

@ -1208,8 +1208,7 @@ static int swim3_attach(struct macio_dev *mdev,
fs = &floppy_states[floppy_count];
memset(fs, 0, sizeof(*fs));
rc = blk_mq_alloc_sq_tag_set(&fs->tag_set, &swim3_mq_ops, 2,
BLK_MQ_F_SHOULD_MERGE);
rc = blk_mq_alloc_sq_tag_set(&fs->tag_set, &swim3_mq_ops, 2, 0);
if (rc)
goto out_unregister;

1
drivers/block/ublk_drv.c
View file

@ -2205,7 +2205,6 @@ static int ublk_add_tag_set(struct ublk_device *ub)
ub->tag_set.queue_depth = ub->dev_info.queue_depth;
ub->tag_set.numa_node = NUMA_NO_NODE;
ub->tag_set.cmd_size = sizeof(struct ublk_rq_data);
ub->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
ub->tag_set.driver_data = ub;
return blk_mq_alloc_tag_set(&ub->tag_set);
}

1
drivers/block/virtio_blk.c
View file

@ -1481,7 +1481,6 @@ static int virtblk_probe(struct virtio_device *vdev)
vblk->tag_set.ops = &virtio_mq_ops;
vblk->tag_set.queue_depth = queue_depth;
vblk->tag_set.numa_node = NUMA_NO_NODE;
vblk->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
vblk->tag_set.cmd_size =
sizeof(struct virtblk_req) +
sizeof(struct scatterlist) * VIRTIO_BLK_INLINE_SG_CNT;

1
drivers/block/xen-blkfront.c
View file

@ -1131,7 +1131,6 @@ static int xlvbd_alloc_gendisk(blkif_sector_t capacity,
} else
info->tag_set.queue_depth = BLK_RING_SIZE(info);
info->tag_set.numa_node = NUMA_NO_NODE;
info->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
info->tag_set.cmd_size = sizeof(struct blkif_req);
info->tag_set.driver_data = info;

1
drivers/block/z2ram.c
View file

@ -354,7 +354,6 @@ static int __init z2_init(void)
tag_set.nr_maps = 1;
tag_set.queue_depth = 16;
tag_set.numa_node = NUMA_NO_NODE;
tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
ret = blk_mq_alloc_tag_set(&tag_set);
if (ret)
goto out_unregister_blkdev;

2
drivers/cdrom/gdrom.c
View file

@ -777,7 +777,7 @@ static int probe_gdrom(struct platform_device *devptr)
probe_gdrom_setupcd();
err = blk_mq_alloc_sq_tag_set(&gd.tag_set, &gdrom_mq_ops, 1,
BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING);
BLK_MQ_F_BLOCKING);
if (err)
goto probe_fail_free_cd_info;

2
drivers/md/dm-rq.c
View file

@ -547,7 +547,7 @@ int dm_mq_init_request_queue(struct mapped_device *md, struct dm_table *t)
md->tag_set->ops = &dm_mq_ops;
md->tag_set->queue_depth = dm_get_blk_mq_queue_depth();
md->tag_set->numa_node = md->numa_node_id;
md->tag_set->flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_STACKING;
md->tag_set->flags = BLK_MQ_F_STACKING;
md->tag_set->nr_hw_queues = dm_get_blk_mq_nr_hw_queues();
md->tag_set->driver_data = md;

3
drivers/memstick/core/ms_block.c
View file

@ -2094,8 +2094,7 @@ static int msb_init_disk(struct memstick_dev *card)
if (msb->disk_id < 0)
return msb->disk_id;
rc = blk_mq_alloc_sq_tag_set(&msb->tag_set, &msb_mq_ops, 2,
BLK_MQ_F_SHOULD_MERGE);
rc = blk_mq_alloc_sq_tag_set(&msb->tag_set, &msb_mq_ops, 2, 0);
if (rc)
goto out_release_id;

3
drivers/memstick/core/mspro_block.c
View file

@ -1139,8 +1139,7 @@ static int mspro_block_init_disk(struct memstick_dev *card)
if (disk_id < 0)
return disk_id;
rc = blk_mq_alloc_sq_tag_set(&msb->tag_set, &mspro_mq_ops, 2,
BLK_MQ_F_SHOULD_MERGE);
rc = blk_mq_alloc_sq_tag_set(&msb->tag_set, &mspro_mq_ops, 2, 0);
if (rc)
goto out_release_id;

2
drivers/mmc/core/queue.c
View file

@ -441,7 +441,7 @@ struct gendisk *mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
else
mq->tag_set.queue_depth = MMC_QUEUE_DEPTH;
mq->tag_set.numa_node = NUMA_NO_NODE;
mq->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING;
mq->tag_set.flags = BLK_MQ_F_BLOCKING;
mq->tag_set.nr_hw_queues = 1;
mq->tag_set.cmd_size = sizeof(struct mmc_queue_req);
mq->tag_set.driver_data = mq;

2
drivers/mtd/mtd_blkdevs.c
View file

@ -329,7 +329,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
goto out_list_del;
ret = blk_mq_alloc_sq_tag_set(new->tag_set, &mtd_mq_ops, 2,
BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING);
BLK_MQ_F_BLOCKING);
if (ret)
goto out_kfree_tag_set;

2
drivers/mtd/ubi/block.c
View file

@ -383,7 +383,7 @@ int ubiblock_create(struct ubi_volume_info *vi)
dev->tag_set.ops = &ubiblock_mq_ops;
dev->tag_set.queue_depth = 64;
dev->tag_set.numa_node = NUMA_NO_NODE;
dev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING;
dev->tag_set.flags = BLK_MQ_F_BLOCKING;
dev->tag_set.cmd_size = sizeof(struct ubiblock_pdu);
dev->tag_set.driver_data = dev;
dev->tag_set.nr_hw_queues = 1;

1
drivers/nvme/host/apple.c
View file

@ -1275,7 +1275,6 @@ static int apple_nvme_alloc_tagsets(struct apple_nvme *anv)
anv->tagset.timeout = NVME_IO_TIMEOUT;
anv->tagset.numa_node = NUMA_NO_NODE;
anv->tagset.cmd_size = sizeof(struct apple_nvme_iod);
anv->tagset.flags = BLK_MQ_F_SHOULD_MERGE;
anv->tagset.driver_data = &anv->ioq;
ret = blk_mq_alloc_tag_set(&anv->tagset);

1
drivers/nvme/host/core.c
View file

@ -4639,7 +4639,6 @@ int nvme_alloc_io_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set,
/* Reserved for fabric connect */
set->reserved_tags = 1;
set->numa_node = ctrl->numa_node;
set->flags = BLK_MQ_F_SHOULD_MERGE;
if (ctrl->ops->flags & NVME_F_BLOCKING)
set->flags |= BLK_MQ_F_BLOCKING;
set->cmd_size = cmd_size;

1
drivers/s390/block/dasd_genhd.c
View file

@ -56,7 +56,6 @@ int dasd_gendisk_alloc(struct dasd_block *block)
block->tag_set.cmd_size = sizeof(struct dasd_ccw_req);
block->tag_set.nr_hw_queues = nr_hw_queues;
block->tag_set.queue_depth = queue_depth;
block->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
block->tag_set.numa_node = NUMA_NO_NODE;
rc = blk_mq_alloc_tag_set(&block->tag_set);
if (rc)

1
drivers/s390/block/scm_blk.c
View file

@ -461,7 +461,6 @@ int scm_blk_dev_setup(struct scm_blk_dev *bdev, struct scm_device *scmdev)
bdev->tag_set.cmd_size = sizeof(blk_status_t);
bdev->tag_set.nr_hw_queues = nr_requests;
bdev->tag_set.queue_depth = nr_requests_per_io * nr_requests;
bdev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
bdev->tag_set.numa_node = NUMA_NO_NODE;
ret = blk_mq_alloc_tag_set(&bdev->tag_set);

1
drivers/scsi/scsi_lib.c
View file

@ -2065,7 +2065,6 @@ int scsi_mq_setup_tags(struct Scsi_Host *shost)
tag_set->queue_depth = shost->can_queue;
tag_set->cmd_size = cmd_size;
tag_set->numa_node = dev_to_node(shost->dma_dev);
tag_set->flags = BLK_MQ_F_SHOULD_MERGE;
tag_set->flags |=
BLK_ALLOC_POLICY_TO_MQ_FLAG(shost->hostt->tag_alloc_policy);
if (shost->queuecommand_may_block)

1
include/linux/blk-mq.h
View file

@ -668,7 +668,6 @@ struct blk_mq_ops {
/* Keep hctx_flag_name[] in sync with the definitions below */
enum {
BLK_MQ_F_SHOULD_MERGE = 1 << 0,
BLK_MQ_F_TAG_QUEUE_SHARED = 1 << 1,
/*
* Set when this device requires underlying blk-mq device for