null_blk: use kmap_local_page() and kunmap_local()

Replace the deprecated API kmap_atomic() and kunmap_atomic() with
kmap_local_page() and kunmap_local() in null_flush_cache_page().

Signed-off-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20230330184926.64209-2-kch@nvidia.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c
index 87edb6d7179829ea4527feab7829ba8393ba1380..1d914a82f863718cc5ac273715397fea78091493 100644 (file)
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -1030,8 +1030,8 @@ static int null_flush_cache_page(struct nullb *nullb, struct nullb_page *c_page)
        if (!t_page)
                return -ENOMEM;
 
-       src = kmap_atomic(c_page->page);
-       dst = kmap_atomic(t_page->page);
+       src = kmap_local_page(c_page->page);
+       dst = kmap_local_page(t_page->page);
 
        for (i = 0; i < PAGE_SECTORS;
                        i += (nullb->dev->blocksize >> SECTOR_SHIFT)) {
@@ -1043,8 +1043,8 @@ static int null_flush_cache_page(struct nullb *nullb, struct nullb_page *c_page)
                }
        }
 
-       kunmap_atomic(dst);
-       kunmap_atomic(src);
+       kunmap_local(dst);
+       kunmap_local(src);
 
        ret = radix_tree_delete_item(&nullb->dev->cache, idx, c_page);
        null_free_page(ret);