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From:   ira.weiny@intel.com
To:     Andrew Morton <akpm@linux-foundation.org>,
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Subject: [PATCH RFC PKS/PMEM 43/58] drivers/mmc: Utilize new kmap_thread()
Date:   Fri,  9 Oct 2020 12:50:18 -0700
Message-Id: <20201009195033.3208459-44-ira.weiny@intel.com>
In-Reply-To: <20201009195033.3208459-1-ira.weiny@intel.com>
References: <20201009195033.3208459-1-ira.weiny@intel.com>
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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: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
 drivers/mmc/host/mmc_spi.c    | 4 ++--
 drivers/mmc/host/sdricoh_cs.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 18a850f37ddc..ab28e7103b8d 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -918,7 +918,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
 		}
 
 		/* allow pio too; we don't allow highmem */
-		kmap_addr = kmap(sg_page(sg));
+		kmap_addr = kmap_thread(sg_page(sg));
 		if (direction == DMA_TO_DEVICE)
 			t->tx_buf = kmap_addr + sg->offset;
 		else
@@ -950,7 +950,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
 		/* discard mappings */
 		if (direction == DMA_FROM_DEVICE)
 			flush_kernel_dcache_page(sg_page(sg));
-		kunmap(sg_page(sg));
+		kunmap_thread(sg_page(sg));
 		if (dma_dev)
 			dma_unmap_page(dma_dev, dma_addr, PAGE_SIZE, dir);
 
diff --git a/drivers/mmc/host/sdricoh_cs.c b/drivers/mmc/host/sdricoh_cs.c
index 76a8cd3a186f..7806bc69c4f1 100644
--- a/drivers/mmc/host/sdricoh_cs.c
+++ b/drivers/mmc/host/sdricoh_cs.c
@@ -312,11 +312,11 @@ static void sdricoh_request(struct mmc_host *mmc, struct mmc_request *mrq)
 			int result;
 			page = sg_page(data->sg);
 
-			buf = kmap(page) + data->sg->offset + (len * i);
+			buf = kmap_thread(page) + data->sg->offset + (len * i);
 			result =
 				sdricoh_blockio(host,
 					data->flags & MMC_DATA_READ, buf, len);
-			kunmap(page);
+			kunmap_thread(page);
 			flush_dcache_page(page);
 			if (result) {
 				dev_err(dev, "sdricoh_request: cmd %i "
-- 
2.28.0.rc0.12.gb6a658bd00c9