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block: move the DISK_MAX_PARTS sanity check into __device_add_disk

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Keep this together with the first place that actually looks at
->minors and prepare for not passing a minors argument to
alloc_disk.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20210521055116.1053587-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-05-21 07:50:52 +02:00 committed by Jens Axboe
parent 7c3f828b52
commit 2e3c73fa0c
1 changed files with 6 additions and 7 deletions
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13
block/genhd.c
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@ -489,6 +489,12 @@ static void __device_add_disk(struct device *parent, struct gendisk *disk,
*/
if (disk->major) {
WARN_ON(!disk->minors);
if (disk->minors > DISK_MAX_PARTS) {
pr_err("block: can't allocate more than %d partitions\n",
DISK_MAX_PARTS);
disk->minors = DISK_MAX_PARTS;
}
} else {
WARN_ON(disk->minors);
WARN_ON(!(disk->flags & (GENHD_FL_EXT_DEVT | GENHD_FL_HIDDEN)));
@ -1255,13 +1261,6 @@ struct gendisk *__alloc_disk_node(int minors, int node_id)
{
struct gendisk *disk;
if (minors > DISK_MAX_PARTS) {
printk(KERN_ERR
"block: can't allocate more than %d partitions\n",
DISK_MAX_PARTS);
minors = DISK_MAX_PARTS;
}
disk = kzalloc_node(sizeof(struct gendisk), GFP_KERNEL, node_id);
if (!disk)
return NULL;