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Subject[PATCH RFC PKS/PMEM 42/58] drivers/scsi: Utilize new kmap_thread()
Date
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 --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;
}
--
2.28.0.rc0.12.gb6a658bd00c9
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