Commit 20072ec8 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

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: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarIra Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20220303111905.321089-6-hch@lst.de


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent bd3d3203

drivers/nvdimm/blk.c

+3 −4
Original line number Diff line number Diff line
@@ -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;