[PATCH 1/3] btt: remove btt_rw_page()

Ross Zwisler
2017-07-28T16:59:01Z

The rw_page() interface doesn't provide a clear performance benefit for the
BTT and has had a nonzero maintenance burden, so remove it.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Cc: Matthew Wilcox <willy@infradead.org>
---
drivers/nvdimm/btt.c | 15 ---------------
1 file changed, 15 deletions(-)

diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 14323fa..e10d330 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1236,20 +1236,6 @@ static blk_qc_t btt_make_request(struct request_queue *q, struct bio *bio)
return BLK_QC_T_NONE;
}

-static int btt_rw_page(struct block_device *bdev, sector_t sector,
- struct page *page, bool is_write)
-{
- struct btt *btt = bdev->bd_disk->private_data;
- int rc;
-
- rc = btt_do_bvec(btt, NULL, page, PAGE_SIZE, 0, is_write, sector);
- if (rc == 0)
- page_endio(page, is_write, 0);
-
- return rc;
-}
-
-
static int btt_getgeo(struct block_device *bd, struct hd_geometry *geo)
{
/* some standard values */
@@ -1261,7 +1247,6 @@ static int btt_getgeo(struct block_device *bd, struct hd_geometry *geo)

static const struct block_device_operations btt_fops = {
.owner = THIS_MODULE,
- .rw_page = btt_rw_page,
.getgeo = btt_getgeo,
.revalidate_disk = nvdimm_revalidate_disk,
};
--
2.9.4