[PATCH 6/9] block: remove the minors argument to __alloc_disk_node

Christoph Hellwig
2021-08-16T13:28:17Z

This was a leftover from the legacy alloc_disk interface. Switch
the scsi ULPs and dasd to set ->minors directly like all other
drivers and remove the argument.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com> [dasd]
---
block/blk-mq.c | 2 +-
block/genhd.c | 6 ++----
drivers/s390/block/dasd_genhd.c | 4 ++--
drivers/scsi/sd.c | 3 ++-
drivers/scsi/sr.c | 3 ++-
include/linux/genhd.h | 3 +--
6 files changed, 10 insertions(+), 11 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 4c56e43e6992..8ac30c343c06 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -3143,7 +3143,7 @@ struct gendisk *__blk_mq_alloc_disk(struct blk_mq_tag_set *set, void *queuedata,
if (IS_ERR(q))
return ERR_CAST(q);

- disk = __alloc_disk_node(0, set->numa_node, lkclass);
+ disk = __alloc_disk_node(set->numa_node, lkclass);
if (!disk) {
blk_cleanup_queue(q);
return ERR_PTR(-ENOMEM);
diff --git a/block/genhd.c b/block/genhd.c
index 2ad2b25dfc87..caeda726189c 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1254,8 +1254,7 @@ dev_t blk_lookup_devt(const char *name, int partno)
return devt;
}

-struct gendisk *__alloc_disk_node(int minors, int node_id,
- struct lock_class_key *lkclass)
+struct gendisk *__alloc_disk_node(int node_id, struct lock_class_key *lkclass)
{
struct gendisk *disk;

@@ -1277,7 +1276,6 @@ struct gendisk *__alloc_disk_node(int minors, int node_id,
if (xa_insert(&disk->part_tbl, 0, disk->part0, GFP_KERNEL))
goto out_destroy_part_tbl;

- disk->minors = minors;
rand_initialize_disk(disk);
disk_to_dev(disk)->class = &block_class;
disk_to_dev(disk)->type = &disk_type;
@@ -1309,7 +1307,7 @@ struct gendisk *__blk_alloc_disk(int node, struct lock_class_key *lkclass)
if (!q)
return NULL;

- disk = __alloc_disk_node(0, node, lkclass);
+ disk = __alloc_disk_node(node, lkclass);
if (!disk) {
blk_cleanup_queue(q);
return NULL;
diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index 07a69b19dd31..6e44515b4d33 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -40,14 +40,14 @@ int dasd_gendisk_alloc(struct dasd_block *block)
if (base->devindex >= DASD_PER_MAJOR)
return -EBUSY;

- gdp = __alloc_disk_node(1 << DASD_PARTN_BITS, NUMA_NO_NODE,
- &dasd_bio_compl_lkclass);
+ gdp = __alloc_disk_node(NUMA_NO_NODE, &dasd_bio_compl_lkclass);
if (!gdp)
return -ENOMEM;

/* Initialize gendisk structure. */
gdp->major = DASD_MAJOR;
gdp->first_minor = base->devindex << DASD_PARTN_BITS;
+ gdp->minors = 1 << DASD_PARTN_BITS;
gdp->fops = &dasd_device_operations;

/*
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 4986086009f1..4e22d1bb6226 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -3409,7 +3409,7 @@ static int sd_probe(struct device *dev)
if (!sdkp)
goto out;

- gd = __alloc_disk_node(SD_MINORS, NUMA_NO_NODE, &sd_bio_compl_lkclass);
+ gd = __alloc_disk_node(NUMA_NO_NODE, &sd_bio_compl_lkclass);
if (!gd)
goto out_free;

@@ -3455,6 +3455,7 @@ static int sd_probe(struct device *dev)

gd->major = sd_major((index & 0xf0) >> 4);
gd->first_minor = ((index & 0xf) << 4) | (index & 0xfff00);
+ gd->minors = SD_MINORS;

gd->fops = &sd_fops;
gd->private_data = &sdkp->driver;
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index fee2bdfe6132..2c45b4140e67 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -714,7 +714,7 @@ static int sr_probe(struct device *dev)

kref_init(&cd->kref);

- disk = __alloc_disk_node(1, NUMA_NO_NODE, &sr_bio_compl_lkclass);
+ disk = __alloc_disk_node(NUMA_NO_NODE, &sr_bio_compl_lkclass);
if (!disk)
goto fail_free;
mutex_init(&cd->lock);
@@ -731,6 +731,7 @@ static int sr_probe(struct device *dev)

disk->major = SCSI_CDROM_MAJOR;
disk->first_minor = minor;
+ disk->minors = 1;
sprintf(disk->disk_name, "sr%d", minor);
disk->fops = &sr_bdops;
disk->flags = GENHD_FL_CD | GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE;
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index ceda9b255dba..d20f101be758 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -259,8 +259,7 @@ static inline sector_t get_capacity(struct gendisk *disk)
int bdev_disk_changed(struct gendisk *disk, bool invalidate);
void blk_drop_partitions(struct gendisk *disk);

-struct gendisk *__alloc_disk_node(int minors, int node_id,
- struct lock_class_key *lkclass);
+struct gendisk *__alloc_disk_node(int node_id, struct lock_class_key *lkclass);
extern void put_disk(struct gendisk *disk);
struct gendisk *__blk_alloc_disk(int node, struct lock_class_key *lkclass);

--
2.30.2