dm-integrity: use bvec_virt

Use bvec_virt instead of open coding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210804095634.460779-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index 20f2510..a9ea361 100644 (file)
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -1819,7 +1819,7 @@ again:
                                unsigned this_len;
 
                                BUG_ON(PageHighMem(biv.bv_page));
-                               tag = lowmem_page_address(biv.bv_page) + biv.bv_offset;
+                               tag = bvec_virt(&biv);
                                this_len = min(biv.bv_len, data_to_process);
                                r = dm_integrity_rw_tag(ic, tag, &dio->metadata_block, &dio->metadata_offset,
                                                        this_len, dio->op == REQ_OP_READ ? TAG_READ : TAG_WRITE);
@@ -2006,7 +2006,7 @@ retry_kmap:
                                        unsigned tag_now = min(biv.bv_len, tag_todo);
                                        char *tag_addr;
                                        BUG_ON(PageHighMem(biv.bv_page));
-                                       tag_addr = lowmem_page_address(biv.bv_page) + biv.bv_offset;
+                                       tag_addr = bvec_virt(&biv);
                                        if (likely(dio->op == REQ_OP_WRITE))
                                                memcpy(tag_ptr, tag_addr, tag_now);
                                        else