diff mbox series

[RFC,PKS/PMEM,42/58] drivers/scsi: Utilize new kmap_thread()

Message ID 20201009195033.3208459-43-ira.weiny@intel.com (mailing list archive)
State RFC
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: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
 drivers/scsi/ipr.c     | 8 ++++----
 drivers/scsi/pmcraid.c | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index b0aa58d117cc..a5a0b8feb661 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -3923,9 +3923,9 @@  static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
 			buffer += bsize_elem) {
 		struct page *page = sg_page(sg);
 
-		kaddr = kmap(page);
+		kaddr = kmap_thread(page);
 		memcpy(kaddr, buffer, bsize_elem);
-		kunmap(page);
+		kunmap_thread(page);
 
 		sg->length = bsize_elem;
 
@@ -3938,9 +3938,9 @@  static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
 	if (len % bsize_elem) {
 		struct page *page = sg_page(sg);
 
-		kaddr = kmap(page);
+		kaddr = kmap_thread(page);
 		memcpy(kaddr, buffer, len % bsize_elem);
-		kunmap(page);
+		kunmap_thread(page);
 
 		sg->length = len % bsize_elem;
 	}
diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index aa9ae2ae8579..4b05ba4b8a11 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -3269,13 +3269,13 @@  static int pmcraid_copy_sglist(
 	for (i = 0; i < (len / bsize_elem); i++, sg = sg_next(sg), buffer += bsize_elem) {
 		struct page *page = sg_page(sg);
 
-		kaddr = kmap(page);
+		kaddr = kmap_thread(page);
 		if (direction == DMA_TO_DEVICE)
 			rc = copy_from_user(kaddr, buffer, bsize_elem);
 		else
 			rc = copy_to_user(buffer, kaddr, bsize_elem);
 
-		kunmap(page);
+		kunmap_thread(page);
 
 		if (rc) {
 			pmcraid_err("failed to copy user data into sg list\n");
@@ -3288,14 +3288,14 @@  static int pmcraid_copy_sglist(
 	if (len % bsize_elem) {
 		struct page *page = sg_page(sg);
 
-		kaddr = kmap(page);
+		kaddr = kmap_thread(page);
 
 		if (direction == DMA_TO_DEVICE)
 			rc = copy_from_user(kaddr, buffer, len % bsize_elem);
 		else
 			rc = copy_to_user(buffer, kaddr, len % bsize_elem);
 
-		kunmap(page);
+		kunmap_thread(page);
 
 		sg->length = len % bsize_elem;
 	}