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>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20220303111905.321089-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
*/
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;