AcoSail/kernel_optimize_test
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libnvdimm, pmem: use ->queuedata for driver private data

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Save a pointer chase by storing the driver private data in the
request_queue rather than the gendisk.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2016-03-18 23:47:43 -07:00
parent d44077a7cd
commit bd842b8ca7
1 changed files with 4 additions and 5 deletions
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9
drivers/nvdimm/pmem.c
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@ -135,8 +135,7 @@ static blk_qc_t pmem_make_request(struct request_queue *q, struct bio *bio)
unsigned long start;
struct bio_vec bvec;
struct bvec_iter iter;
struct block_device *bdev = bio->bi_bdev;
struct pmem_device *pmem = bdev->bd_disk->private_data;
struct pmem_device *pmem = q->queuedata;
do_acct = nd_iostat_start(bio, &start);
bio_for_each_segment(bvec, bio, iter) {
@ -161,7 +160,7 @@ static blk_qc_t pmem_make_request(struct request_queue *q, struct bio *bio)
static int pmem_rw_page(struct block_device *bdev, sector_t sector,
struct page *page, int rw)
{
struct pmem_device *pmem = bdev->bd_disk->private_data;
struct pmem_device *pmem = bdev->bd_queue->queuedata;
int rc;
rc = pmem_do_bvec(pmem, page, PAGE_SIZE, 0, rw, sector);
@ -183,7 +182,7 @@ static int pmem_rw_page(struct block_device *bdev, sector_t sector,
static long pmem_direct_access(struct block_device *bdev, sector_t sector,
void __pmem **kaddr, pfn_t *pfn)
{
struct pmem_device *pmem = bdev->bd_disk->private_data;
struct pmem_device *pmem = bdev->bd_queue->queuedata;
resource_size_t offset = sector * 512 + pmem->data_offset;
*kaddr = pmem->virt_addr + offset;
@ -267,6 +266,7 @@ static int pmem_attach_disk(struct device *dev,
blk_queue_max_hw_sectors(pmem->pmem_queue, UINT_MAX);
blk_queue_bounce_limit(pmem->pmem_queue, BLK_BOUNCE_ANY);
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, pmem->pmem_queue);
pmem->pmem_queue->queuedata = pmem;
disk = alloc_disk_node(0, nid);
if (!disk) {
@ -275,7 +275,6 @@ static int pmem_attach_disk(struct device *dev,
}
disk->fops = &pmem_fops;
disk->private_data = pmem;
disk->queue = pmem->pmem_queue;
disk->flags = GENHD_FL_EXT_DEVT;
nvdimm_namespace_disk_name(ndns, disk->disk_name);