diff mbox series

[RFC,PKS/PMEM,47/58] drivers/mtd: Utilize new kmap_thread()

Message ID 20201009195033.3208459-48-ira.weiny@intel.com (mailing list archive)
State New, archived
Headers show
Series PMEM: Introduce stray write protection for PMEM | expand

Commit Message

Ira Weiny Oct. 9, 2020, 7:50 p.m. UTC 
From: Ira Weiny <ira.weiny@intel.com>

These kmap() calls are localized to a single thread.  To avoid the over
head of global PKRS updates use the new kmap_thread() call.

Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
 drivers/mtd/mtd_blkdevs.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 0c05f77f9b21..4b18998273fa 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -88,14 +88,14 @@  static blk_status_t do_blktrans_request(struct mtd_blktrans_ops *tr,
 			return BLK_STS_IOERR;
 		return BLK_STS_OK;
 	case REQ_OP_READ:
-		buf = kmap(bio_page(req->bio)) + bio_offset(req->bio);
+		buf = kmap_thread(bio_page(req->bio)) + bio_offset(req->bio);
 		for (; nsect > 0; nsect--, block++, buf += tr->blksize) {
 			if (tr->readsect(dev, block, buf)) {
-				kunmap(bio_page(req->bio));
+				kunmap_thread(bio_page(req->bio));
 				return BLK_STS_IOERR;
 			}
 		}
-		kunmap(bio_page(req->bio));
+		kunmap_thread(bio_page(req->bio));
 		rq_flush_dcache_pages(req);
 		return BLK_STS_OK;
 	case REQ_OP_WRITE:
@@ -103,14 +103,14 @@  static blk_status_t do_blktrans_request(struct mtd_blktrans_ops *tr,
 			return BLK_STS_IOERR;
 
 		rq_flush_dcache_pages(req);
-		buf = kmap(bio_page(req->bio)) + bio_offset(req->bio);
+		buf = kmap_thread(bio_page(req->bio)) + bio_offset(req->bio);
 		for (; nsect > 0; nsect--, block++, buf += tr->blksize) {
 			if (tr->writesect(dev, block, buf)) {
-				kunmap(bio_page(req->bio));
+				kunmap_thread(bio_page(req->bio));
 				return BLK_STS_IOERR;
 			}
 		}
-		kunmap(bio_page(req->bio));
+		kunmap_thread(bio_page(req->bio));
 		return BLK_STS_OK;
 	default:
 		return BLK_STS_IOERR;