From mboxrd@z Thu Jan 1 00:00:00 1970 From: ira.weiny@intel.com Date: Fri, 9 Oct 2020 12:50:22 -0700 Subject: [Intel-wired-lan] [PATCH RFC PKS/PMEM 47/58] drivers/mtd: Utilize new kmap_thread() In-Reply-To: <20201009195033.3208459-1-ira.weiny@intel.com> References: <20201009195033.3208459-1-ira.weiny@intel.com> Message-ID: <20201009195033.3208459-48-ira.weiny@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: From: Ira Weiny 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 Cc: Richard Weinberger Cc: Vignesh Raghavendra Signed-off-by: Ira Weiny --- drivers/mtd/mtd_blkdevs.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) 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; -- 2.28.0.rc0.12.gb6a658bd00c9