diff options
| author | Christoph Hellwig <hch@lst.de> | 2022-03-03 14:19:01 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-03-04 22:29:21 +0300 |
| commit | 3205190655ea56ea5e00815eeff4dab2bde0af80 (patch) | |
| tree | bf26c63ea924934c9eca15eb749017435553ff85 /drivers/nvdimm/btt.c | |
| parent | 20072ec828640b7d23a0cfdbccf0dea48e77ba3e (diff) | |
| download | linux-3205190655ea56ea5e00815eeff4dab2bde0af80.tar.xz | |
nvdimm-btt: use bvec_kmap_local in btt_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 <hch@lst.de>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20220303111905.321089-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/nvdimm/btt.c')
| -rw-r--r-- | drivers/nvdimm/btt.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index cbd994f7f1fe..9613e54c7a67 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -1163,17 +1163,15 @@ static int btt_rw_integrity(struct btt *btt, struct bio_integrity_payload *bip, */ cur_len = min(len, bv.bv_len); - mem = kmap_atomic(bv.bv_page); + mem = bvec_kmap_local(&bv); if (rw) - ret = arena_write_bytes(arena, meta_nsoff, - mem + bv.bv_offset, cur_len, + ret = arena_write_bytes(arena, meta_nsoff, mem, cur_len, NVDIMM_IO_ATOMIC); else - ret = arena_read_bytes(arena, meta_nsoff, - mem + bv.bv_offset, cur_len, + ret = arena_read_bytes(arena, meta_nsoff, mem, cur_len, NVDIMM_IO_ATOMIC); - kunmap_atomic(mem); + kunmap_local(mem); if (ret) return ret; |