From 20072ec828640b7d23a0cfdbccf0dea48e77ba3e Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 3 Mar 2022 14:19:00 +0300 Subject: [PATCH] nvdimm-blk: use bvec_kmap_local in nd_blk_rw_integrity 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 Reviewed-by: Ira Weiny Link: https://lore.kernel.org/r/20220303111905.321089-6-hch@lst.de Signed-off-by: Jens Axboe --- drivers/nvdimm/blk.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c index c1db435..0a38738 100644 --- a/drivers/nvdimm/blk.c +++ b/drivers/nvdimm/blk.c @@ -88,10 +88,9 @@ static int nd_blk_rw_integrity(struct nd_namespace_blk *nsblk, */ cur_len = min(len, bv.bv_len); - iobuf = kmap_atomic(bv.bv_page); - err = ndbr->do_io(ndbr, dev_offset, iobuf + bv.bv_offset, - cur_len, rw); - kunmap_atomic(iobuf); + iobuf = bvec_kmap_local(&bv); + err = ndbr->do_io(ndbr, dev_offset, iobuf, cur_len, rw); + kunmap_local(iobuf); if (err) return err; -- 2.7.4