[PATCH 01/10] iss-simdisk: use bvec_kmap_local in simdisk_submit_bio
From: Christoph Hellwig <hch@lst.de>
Date: 2022-02-22 15:52:22
Also in:
linux-bcache, nvdimm
Subsystem:
tensilica xtensa port (xtensa), the rest · Maintainers:
Chris Zankel, Max Filippov, Linus Torvalds
Using local kmaps slightly reduces the chances to stray writes, and the bvec interface cleans up the code a little bit. Signed-off-by: Christoph Hellwig <hch@lst.de> --- arch/xtensa/platforms/iss/simdisk.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/xtensa/platforms/iss/simdisk.c b/arch/xtensa/platforms/iss/simdisk.c
index 8eb6ad1a3a1de..0f0e0724397f4 100644
--- a/arch/xtensa/platforms/iss/simdisk.c
+++ b/arch/xtensa/platforms/iss/simdisk.c@@ -108,13 +108,13 @@ static void simdisk_submit_bio(struct bio *bio) sector_t sector = bio->bi_iter.bi_sector; bio_for_each_segment(bvec, bio, iter) { - char *buffer = kmap_atomic(bvec.bv_page) + bvec.bv_offset; + char *buffer = bvec_kmap_local(&bvec); unsigned len = bvec.bv_len >> SECTOR_SHIFT; simdisk_transfer(dev, sector, len, buffer, bio_data_dir(bio) == WRITE); sector += len; - kunmap_atomic(buffer); + kunmap_local(buffer); } bio_endio(bio);
--
2.30.2