diff --git a/drivers/dax/super.c b/drivers/dax/super.c index 1d7bd96511f00..1d2de641cabb9 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -85,6 +85,7 @@ EXPORT_SYMBOL_GPL(fs_dax_get_by_bdev); bool __bdev_dax_supported(struct block_device *bdev, int blocksize) { struct dax_device *dax_dev; + struct request_queue *q; pgoff_t pgoff; int err, id; void *kaddr; @@ -98,6 +99,13 @@ bool __bdev_dax_supported(struct block_device *bdev, int blocksize) return false; } + q = bdev_get_queue(bdev); + if (!q || !blk_queue_dax(q)) { + pr_debug("%s: error: request queue doesn't support dax\n", + bdevname(bdev, buf)); + return false; + } + err = bdev_dax_pgoff(bdev, 0, PAGE_SIZE, &pgoff); if (err) { pr_debug("%s: error: unaligned partition for dax\n",